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HomeMy WebLinkAbout09-04-2019 Planning Commission Packet Planning Commission Meeting September 4, 2019 6:00 pm Columbia Heights City Hall 590 40th Avenue NE Columbia Heights, MN 55421 1. Call to order 2. Roll Call 3. Approval of August 7, 2019, Planning Commission Meeting Minutes 4. Public Hearing a. Case: 2019-0901, Conditional Use Permit Location: 3836 Stinson Blvd. NE, Columbia Heights, MN 55421 Applicant: Hamilton Sign b. Case: 2019-0902, Conditional Use Permit, Site Plan Review, Variance Location: 4141 University Ave NE. Columbia Heights, MN 55421 Applicant: Friends of Prodeo c. Case: 2019-0903, Preliminary Plat and Site Plan Review Location: 35-30-24-43-0125 (unassigned address) Applicant: Contractors Capital Company 5. Other Business a. Next regularly scheduled meeting: October 1, 2019, 6:00 pm 6. Adjourn MINUTES OF PLANNING COMMISSION AUGUST 7, 2019 6:00 PM The meeting was called to order at 6:00 pm by Chair Szurek. Commission Members present- Sahnow, Novitsky, Fiorendino, Hoium, Schill, Kaiser, and Szurek. Also present were Elizabeth Hammond (Planner), Aaron Chirpich (Community Development Director), Shelley Hanson (Secretary), and John Murzyn (Council Liaison). APPROVAL OF MINUTES Motion by Schill, seconded by Hoium, to approve the minutes from the meeting of May 7, 2019. All ayes. MOTION PASSED. Aaron Chirpich, the new Community Development Director was introduced to the Commission. CASE #: 2019-0801 APPLICANT: D.T. Meisinger Development Inc LOCATION: 4320 Stinson Blvd NE REQUEST: Variance Hammond said that D.T. Meisinger Development Inc., is representing Alexis and Jennefer James, and they have requested a Variance to the wall and total height requirements for the proposed attached garage to be located on the subject property. Currently, the property is vacant and the property owners are planning to construct a new single family home on the property. The proposed house would meet setbacks and height requirements; however the attached garage as proposed exceeds the ordinance allotment for wall height and total height to the highest point. The City’s Zoning Ordinance defines accessory buildings or structures in Section 9.103 as: A building or structure or portion of a structure subordinate to and serving the principal structure on the same lot. In Section 9.106, the standards which regulate the construction and maintenance of accessory structures include that, the wall height cannot exceed 9 feet and that the total height measured to the highest point, cannot exceed 18 feet or the height of the house, whichever is less. The proposed garage has 12 foot walls and a total height of 21 feet, at the highest point, exceeding the wall height and total height by 3 feet. The applicant has requested a variance to allow for the proposed garage and included a narrative which details the reasoning for the request. According to the applicant, the request for taller walls and a taller total height is due to the location of the garage on the subject property and water run off concerns. Additionally, the applicant argues there could be financial impacts to lowering the garage to meet the wall and total height requirements. ZONING ORDINANCE The property is located in the R-1 Single Family Residential Zoning District. The properties to the north, south, and west are zoned R-1, Single Family Residential and Public and Open Space. The properties to the east are located in the City of St. Anthony. COMPREHENSIVE PLAN The Comprehensive Plan guides this property for low density residential. Planning Commission Page 2 Aug. 7, 2019 SITE PLAN The owner has submitted a legal certificate of survey dated June 13, 2019 indicating the proposed location of the home and attached garage along with concept plans including elevations. The survey shows that the attached garage will be located on the east side of the house. FINDINGS OF FACT Section 9.104 (G) of the Zoning Ordinance outlines five conditions that must be met in order for the City Council to grant a Variance. They are as follows: (a) Because of the particular physical surroundings, or the shape, configuration, topography, or other conditions of the specific parcel of land involved, strict adherence to the provisions of this article would cause practical difficulties in conforming to the zoning ordinance. The applicant, however, is proposing to use the property in a reasonable manner not permitted by the zoning ordinance. This does not appear to be entirely true. While the applicant is proposing to use the property in a generally reasonable manner, not permitted by the Zoning Ordinance, the conditions of the specific parcel do not cause the need for the variance. The applicant could modify the garage to comply with the height requirements. The applicant argues that the placement of the garage on the lot is part of the justification for the request; however the placement of the garage does not correlate to the request for the garage to be taller. Additionally, the City’s Engineer and Building Official have concluded that the geotechnical and water run off challenges the applicant argues in the narrative would not impede the garage achieving the height requirement. (b) The conditions upon which the variance is based are unique to the specific parcel of land involved and are generally not applicable to other properties within the same zoning classification. The parcel’s location is unique due the secluded area, adjacent to the lake access in Columbia Heights and parkland in St. Anthony. The subject property is larger than typical lots in Columbia Heights. The parcel area is 13, 817 sq. ft., whereas typical lots in Columbia Heights are approximately between 5,000 sq. ft. – 9,000 sq. ft. However, the size of the subject property is not unique to the neighborhood area or zoning classification (R-1 Single Family Residential). There are lots in the neighborhood and same zoning classification with a similar or larger area (lot size). The grade on the lot increases on the west side, which requires a retaining wall to be built, as shown on the survey. However, the variance request appears to be based on the applicant’s desire to have a taller, larger, garage and financial impacts associated with potentially building a taller retaining wall, both of which are not unique to this specific parcel of land, and could generally be applicable to other properties within the same zoning classification or elsewhere in the City. (c) The practical difficulties are caused by the provisions of this article and have not been created by any person currently having a legal interest in the property. Practical difficulties do not appear to be evident in this case, based on the applicant’s justification for the variance requests. Planning Minutes Page 3 Aug 7, 2019 (d) The granting of the variance is in harmony with the general purpose and intent of the Comprehensive Plan. The Comprehensive Plan supports low density residential development in this area. The construction of a new attractive single family home on the lot is in harmony with the Comprehensive plan. (e) The granting of the variance will not be materially detrimental to the public welfare or materially injurious to the enjoyment, use, development or value of property or improvements in the vicinity. If the City Council decides to grant the variance, it does not appear that the taller garage would be substantially harmful to the public welfare, or the use and value of property in the vicinity. The home would likely not appear to be significantly out of scale with the surrounding homes or alter the character of the area. RECOMMENDATION Staff recommends that the Planning Commission recommend denial of the variance requests. It does not appear that the request meets the findings outlined in the City’s Ordinance. Additionally, it does not appear that the request meets the legal standard set forth in law that cities must apply when considering a variance request. Cities must apply a three factor test in considering variance requests, and all three factors must be satisfied. The three factors are: 1) Reasonableness 2) Uniqueness 3) Essential Character. Based on the information provided by the applicant, staff does not find that all three factors have been satisfied to constitute a practical difficulty. Questions/comments from members: Szurek asked Hammond if anything in the League of MN Cities guidelines would classify this matter as a hardship. Hammond said the request must meet the “practical difficulties” definition per State Statute. Hammond said that staff took a lot of time reviewing this application and checked with other adjacent cities. She said the height requirements detailed in our Ordinance are in line with Fridley, St. Anthony, and Minneapolis. Sahnow asked how the 9 foot wall height and 18 foot total height requirement was arrived at and when that was adopted. Hammond said she is not sure when these figures were written into the ordinance since it was long before she became the Planner. She explained that limits were most likely created because the average size of lots in Columbia Heights are smaller, and it seems to be an area wide consensus to provide some uniformity. Sahnow pointed out that the narrative provided by the owner said they wanted to stay above the water table. If the water table is an issue, wouldn’t lowering the garage 3 feet below the house foundation be a water issue for the garage. Hammond told members that both the Building Official and the City Engineer said that the house foundation could be lowered 3 feet which would bring the first floor down to the same elevation as the garage and would bring the 2nd floor elevation down to properly line up, which would allow for 9 ft walls in the garage, and they would still be above the ground water. It may take more grading in the front to lessen the slope of the driveway and possibly in the back to move the retaining wall back, but it could be done. Fiorendino asked if the email correspondence handed out at the meeting changes anything. Hammond said we would review those with the applicant during the Public Hearing. Fiorendino then asked if there was any language in the Zoning Code that allows for changes in height due to the size of the lot. Hammond told him no. Planning Minutes Page 4 Aug. 7, 2019 Hoium questioned the drawings and wanted to make sure he understood that the garage slab was 3 feet lower than the house and that causes the need for the 12 foot walls in order to match up with the 2nd floor of the home. This will also mean they have to step up into the home from the garage and at the front door. He asked if standard garage doors will be installed, and the applicant said yes, there would be an 8 x 25 door. Public Hearing was Opened. Sahnow asked if the Zoning Code gives a definition of wall height, or total height, and how it is measured. Hammond said typically it is measured from the top of the foundation to the peak. Hoium asked why they were lowering the garage slab and therefore, causing the need to increase the wall height to match up with the 2nd floor. DT Meisinger said they were trying to raise the house for drainage reasons in the back corner especially, and by lowering the garage slab the driveway slope stayed within the required parameters without additional grading. The proposed design would provide a 2% swale in the backyard and a 10% slope of the driveway. If the garage were raised it would cause a 17% slope of the driveway unless additional grading was done. Hoium asked if the intent of the ordinance is to dictate roofline height. Hammond said the code clearly dictates wall height of the accessory structure cannot exceed 9 feet and the total height cannot exceed 18 feet or the total height of the primary structure, whichever is less. Szurek asked how high the retaining wall in the back would be. DT Meisinger said that is unknown at this time. She didn’t think the request affects others in the neighborhood. Kaiser said there are lots of ways to deal with water run off. He asked if the house were flipped, would it help them be able to put both foundations at the same level thus eliminating the need to have higher garage walls. DT Meisinger said no, it would be worse due to the slope of the north side. He said it is the unique shape and topography of the lot that is causing this problem. Hoium asked why they didn’t choose a different style house to fit the lot. DT Meisinger said this is the house the owners want. Public Hearing Closed. Hoium noted the Building Official and City Engineer both felt the house could be lowered to match the garage foundation or the garage could be raised up. Either option would work if they changed the grading and moved the retaining wall back or made it higher, even though it would increase the cost, as noted in their narrative. Fiorendino stated that by law the commission cannot take into consideration costs involved to meet the requirements when considering a variance request. The commission needs to decide if its unique with no work around. Chirpich reviewed the three criteria that must be met in order to grant a variance. Planning Minutes Page 5 Aug 7, 2019 D.T. said the variance is requested because of the topography and that they only have half of the lot to work with in order to deal with water run off and create a swale. Half the lot is flat and the other half has great elevation changes so any house built would have these same problems. Schill asked if there was any chance the new information submitted from the surveyor would change this for the City Council. Hammond said the City Engineer will be at the Council meeting and can speak to this then. She will provide the new information to him prior to the meeting. Schill then asked if the 10% maximum grade for the driveway is a suggestion or requirement. Chirpich stated he felt it is a requirement since the word “Shall” is used in the Ordinance. Sahnow said the lot was split in 2017, and wondered if it has always been a vacant lot. Hammond told members that originally this site was two lots and it was subdivided into five. She believes this particular lot has always been a vacant piece of land. He asked if staff had an opinion on whether this was indeed a unique situation. If there are other ways to meet the requirements, does it fit the definition of unique. Hoium asked if we deny this variance request, would they be allowed to come back and ask for one for the slope of the driveway. Kaiser said he is sympathetic to properties that have water issues. He thinks that is a logical concern and argument, but he is inclined to follow the recommendation of staff and follow the state statute on this matter. Motion by Kaiser, seconded by Novitsky, to recommend the City Council deny the request for variances to the height restrictions in City Code Section 9.106, as the application does not meet the findings of fact and practical difficulties standard. Ayes-Kaiser, Novitsky, Fiorendino, and Hoium Nays-Sahnow, Szurek, and Schill MOTION PASSED 4-3. This matter will go to the City Council August 12, 2019 CASE NO: 2019-0802 APPLICANT: Kraus-Anderson Construction Co LOCATION: 1400-1440 49th Avenue-High School Property REQUEST: Site Plan Review Hammond explained that Kraus-Anderson Construction Company has requested Site Plan Review on behalf of Columbia Heights Public Schools, ISD 13 for a proposed band room addition to the existing educational facility. According to the applicant’s narrative, additional space is needed to meet the current and future needs of the school’s programming. The proposed addition is 3,348 sq. ft. (54’ X 62’) and will match the existing structure in terms of design and color. The proposed addition satisfies the City’s setbacks and height requirements. Planning Minutes Page 6 Aug 7, 2017 ZONING ORDINANCE The subject property is located in the R-1 Single Family Residential District. The properties to the north and east are located in the R-1 District, and the properties to the south and west are located in the R-2A One and Two Family Residential and R-3, Multiple Family Residential Districts. COMPREHENSIVE PLAN The Comprehensive Plan guides this property for Institutional development. FINDINGS OF FACT Section 9.104 (N) of the Zoning Ordinance outlines four findings of fact that must be met in order for the City to approve a Site Plan. They are as follows: a. The Site Plan conforms to all applicable requirements of this article. The applicable Zoning Code requirements are achieved. b. The Site Plan is consistent with the applicable provisions of the City’s Comprehensive Plan. The Comprehensive Plan guides this area for Institutional Use. Staff believes the proposed Site Plan for the property is consistent with the intent of the Comprehensive Plan. c. The Site Plan is consistent with any applicable area plan. There is no area plan for this parcel. d. The Site Plan minimizes any adverse impacts on property in the immediate vicinity and the public right- of-way. This is correct. The proposed addition will not impact the surrounding property in the immediate vicinity or the public right of way. RECOMMENDATION Staff recommends that the Planning Commission approve the Site Plan for the proposed addition to the Columbia Heights High School subject to certain conditions of approval. Questions/comments from members: Chirpich explained that additional fire walls need to be added to the existing structure to bring it into compliance as part of this project. Hoium asked if there was anything on the parcel of land they plan on constructing the addition. Hammond answered no. Public Hearing Opened. Andy Smoka from 1206 Khyber Lane said Kraus Anderson is a good contractor so he was not at the meeting to complain about them. He did question why they had already cleared the area and put up their construction fence if this hasn’t been approved yet. He wanted to know whose decision it was to make an addition to the high school. Staff told him it was the School District’s decision. Smoka went on to complain about his high taxes and that all these apartments that were just constructed brought more kids so now all the schools will need additions and Planning Minutes Page 7 Aug. 7, 2019 his taxes will go up more. He said for the value of his property, Columbia Heights taxes are much more than Blaine’s. He is against spending more money and raising taxes more. Then Smoka went on to complain about water issues he is having and that his sump pump runs continually and he blamed it on the townhouses and apartments that were built down the hill from him. Motion by Fiorendino, seconded by Schill, to waive the reading of Resolution No. 2019-PZ02, there being ample copies available to the public. All ayes. MOTION PASSED. Motion by Fiorendino, seconded by Sahnow, to approve Resolution No. 2019- PZ02, being a resolution approving a Site Plan, for the proposed addition to the Columbia Heights High School and subject to the following conditions: 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. All on-site mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Screening may be accomplished through the use of walls or other design features that are architecturally compatible with the principal structure, screening vegetation, integrated parapet walls of sufficient height, or other means as approved by the Zoning Administrator. 3. The applicant shall meet the requirements outlined in the attached letter from the Interim Fire Chief, dated August 30, 2019. 4. The applicant shall meet the requirements outlined in the attached letter from the Building Official, dated August 1, 2019. 5. All City Storm Water Management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. Plans for rate control shall be reviewed by the City Engineer prior to the building permit issuance. 6. A final complete Certificate of Survey shall be reviewed by the City Planner prior to the building permit issuance. 7. Site and elevation plans included in this submittal, shall become part of this approval. 8. All other applicable local, state, and federal requirements shall be met at all times. RESOLUTION NO. 2019 – PZ02 A Resolution of the Planning Commission approving a Site Plan for the proposed addition to the Columbia Heights High School located at 1440 49th Ave NE, Columbia Heights, MN 55421 (PIN 25-30-24- 31-0001) Whereas, a proposal (Case 2019-0802) has been submitted by Kraus-Anderson Construction Company to the Planning Commission, requesting Site Plan Review from the City of Columbia Heights at the following site: LOCATION: 1440 49th Ave NE (25-30-24-31-0001) LEGAL DESCRIPTION: On file at City Hall. THE APPLICANT SEEKS THE FOLLOWING: Site Plan Review for an addition to the Columbia Heights High School located at 1440 49th Ave NE, Columbia Heights, MN 55421 Planning Minutes Page 8 Aug. 7, 2019 Whereas, the Planning Commission held a public hearing as required by the City Zoning Code on August 7, 2019; Whereas, the Planning Commission has considered the advice and recommendations of City staff regarding the effect of the proposed Site Plan upon the health, safety, and welfare of the community and its Comprehensive Plan, as well as any concerns related to compatibility of uses, traffic, property values, light, air, danger of fire, and risk to public safety in the surrounding areas; Now, therefore, be it resolved, the Planning Commission of the City of Columbia Heights after reviewing the proposal, accepts and adopts the following findings: 1. The site plan conforms to all applicable requirements of this article. 2. The site plan is consistent with the applicable provisions of the City’s Comprehensive Plan. 3. The site plan is consistent with any applicable area plan. 4. The site plan minimizes any adverse impacts on property in the immediate vicinity and the public right- of-way. Further, be it resolved, that the attached conditions, maps, and other information shall become part of this approval; and in granting this approval the City and the applicant agree that this approval shall become null and void if the project has not been completed within one (1) calendar year after the approval date, subject to petition for renewal of the permit. CONDITIONS: 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. All on-site mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Screening may be accomplished through the use of walls or other design features that are architecturally compatible with the principal structure, screening vegetation, integrated parapet walls of sufficient height, or other means as approved by the Zoning Administrator. 3. The applicant shall meet the requirements outlined in the attached letter from the Interim Fire Chief, dated August 30, 2019. 4. The applicant shall meet the requirements outlined in the attached letter from the Building Official, dated August 1, 2019. 5. All City Storm Water Management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. Plans for rate control shall be reviewed by the City Engineer prior to the building permit issuance. 6. A final complete Certificate of Survey shall be reviewed by the City Planner prior to the building permit issuance. 7. Site and elevation plans included in this submittal, shall become part of this approval. 8. All other applicable local, state, and federal requirements shall be met at all times. Planning Minutes Page 9 Aug 7, 2019 Passed this 7th day of August, 2019 Offered by: ______________________________ Seconded by: Marlaine Szurek, Chair Roll Call: Ayes: Abstain: ____________________________________ Shelley Hanson, Secretary OTHER BUSINESS *Hammond told members that the 2040 Comprehensive Plan has finally been deemed complete by the Met Council. Two committees will now review it during August and September. Staff plans on having the City Council adopt it at the September 25th meeting. So it will be in effect by the end of the year. *Chirpich told the members that there will be two applications to consider at the September meeting. Prodeo Academy has purchased 4141 University Ave and will demolish the Oakhill Baptist Church structure and build a new K-8 charter school. So the Site Plan, CUP, and variances will be on the agenda. This is a 22 million dollar project for the City. The second case will be for the remnant parcel by the round-about on Jefferson and Huset Pkwy. A developer is proposing a 75 unit Assisted Living Building that again will be a 22 million dollar project. *Other Updates: Chirpich told them the City recently acquired the NE Business Center at 3989 Central Avenue and that we have entered into a pre-development agreement with Alatus Co. to build a 6 story building of 200+ luxury apartments and possibly a new city hall on the ground floor at the location. He told them the Council has narrowed down the location of a new city hall to this location or next to Murzyn Hall. Alatus hopes to start in the Spring of 2020. He explained that the site had been designated as an “Opportunity Zone” which brings additional tax credits and financing options for re-development. He said the property located behind the Public Safety Building also has this designation and there are interested parties looking at that site also. He told members he is excited to be on board with so many challenging projects in the works. The next regular meeting will be Wednesday, September 4, 2019. Motion by Fiorendino, seconded by Novitsky, to adjourn the meeting at 7:25 pm. Respectfully submitted, Shelley Hanson Secretary CITY OF COLUMBIA HEIGHTS PLANNING AND ZONING COMMISSION PLANNING REPORT CASE NUMBER: 2019-0901 DATE: September 4, 2019 TO: Columbia Heights Planning and Zoning Commission APPLICANT: Hamilton Sign DEVELOPMENT: Monument Sign with Dynamic LED Components LOCATION: 3836 Stinson Blvd. NE REQUEST: Conditional Use Permit for Dynamic LED Sign PREPARED BY: Elizabeth Holmbeck, City Planner INTRODUCTION Hamilton Sign on behalf of Minnesota Family Church is requesting a Conditional Use Permit per Code Section 9.106 (P) (11) (C) (2) to allow a dynamic light emitting diode (LED) sign for the property located at 3836 Stinson Blvd. NE. A dynamic LED sign would include any components of a sign that appear to have movement or that appear to change, caused by a method other than physically removing and replacing the sign or its components. This also includes any moving, flashing, blinking or animated display and any display that incorporates LED lights manipulated through digital input, “digital ink” or any other method or technology that allows the sign face to present a series of images or displays. Dynamic LED signs are permitted in the Limited Business Zoning District as a conditional use in conjunction with a religious facility. The proposed sign meets the City’s zoning code requirements for Dynamic LED Signage. A rendering of the proposed sign and the proposed location is attached. ZONING The property located at 3836 Stinson Blvd. NE is zoned LB, limited business, as are the properties to the north and south. Properties to the west are located in the public and open space district, and the properties to the east are located in the City of St. Anthony. FINDINGS OF FACT Section 9.104 (H) of the Zoning Ordinance outlines nine conditions that must be met in order for the City Council to grant a Conditional Use Permit. They are as follows: (a) The use is one of the conditional uses listed for the zoning district in which the property is located, or is a substantially similar use as determined by the Zoning Administrator. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 2 Dynamic LED signs are specifically listed as a Conditional Use in the Limited Business Zoning District in conjunction with a religious facility. (b) The use is in harmony with the general purpose and intent of the Comprehensive Plan. This is correct. (c) The use will not impose hazards or disturbing influences on neighboring properties. The proposed use will not result in any additional noise and should not disrupt neighboring properties. In order to mitigate any potential disturbances, the City’s zoning code outlines specific development standards that address the operation of dynamic LED signs. Staff has added a condition of approval, that a site inspection will be conducted once the sign is completed and landscaping is installed to observe impact on the adjacent residential apartment building to the south. If needed, additional screening will be installed along southern property line. (d) The use will not substantially diminish the use of the property in the immediate vicinity. This is correct. (e) The use will be designed, constructed, operated, and maintained in a manner that is compatible with the appearance of the existing or intended character of the surrounding area. The applicant will abide by specific development standards as they relate to LED signs. These standards help ensure compatibility with the appearance of the existing surrounding area. (f) The use and property upon which the use is located are adequately served by essential public facilities and services. This is correct. (g) Adequate measures have been or will be taken to minimize traffic congestion on the public streets and to provide for appropriate on-site circulation of traffic. The use of a dynamic LED sign at this location is not anticipated to affect traffic. (h) The use will not cause a negative cumulative effect, when considered in conjunction with the cumulative effect of other uses in the immediate vicinity. The dynamic LED sign adheres to specific development standards and the zoning code. The use will not cause a negative cumulative effect. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 3 (i) The use complies with all other applicable regulations for the districts in which it is located. This is correct. RECOMMENDATION Staff recommends that the Planning and Zoning Commission recommend approval of the Conditional Use Permit for the proposed dynamic LED sign proposed to be located at 3836 Stinson Blvd. NE. Motion: Move to close the public hearing and waive the reading of Resolution 2019-70, there being ample copies available to the public. Motion: The Planning and Zoning Commission recommends that the City Council approve Resolution No. 2019-70, approving a Conditional Use Permit for a proposed dynamic LED sign for the property located at 3836 Stinson Blvd. NE., subject to certain conditions of approval that have been found to be necessary to protect the public interest and ensure compliance with the provisions of the Zoning and Development Ordinance, including: 1. Dynamic LED signs are allowed only on monument signs for conditionally permitted uses in all zoning districts, with the exception of the PO, Public District, in which LED signage may be utilized in existing pylon signs. All dynamic LED signs may occupy no more than 60% of the actual copy and graphic area. The remainder of the sign must not have the capability to have dynamic LED signs, even if not used. Only one, contiguous dynamic display area is allowed on a sign face. 2. A dynamic LED sign may not change or move more often than once every ten seconds for commercial, industrial uses, or public uses, and no more than once every ten minutes for religious and/or educational institution uses, except one for which changes are necessary to correct hour-and-minute, date, or temperature information. 3. A display of time, date or temperature information may change as frequently as once every five seconds, however information displayed not relating to the date, time or temperature must not change or move more often than once every ten seconds for commercial, industrial uses, or public uses, and no more than once every ten minutes for religious and/or educational institution uses. 4. The images and messages displayed must be static, and the transition from one state display to another must be instantaneous without any special effects. Motion, animation and video images are prohibited on dynamic LED sign displays. 5. The images and messages displayed must be complete in themselves, without continuation in content to the next image or message or to any other sign. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 4 6. Dynamic LED signs must be designed and equipped to freeze the device in one position if a malfunction shall occur. The displays must also be equipped with a means to immediately discontinue the display if it malfunctions, and the sign owner must immediately stop the dynamic display when notified by the city that it is not complying with the standards of this section. 7. Dynamic LED signs may not exceed a maximum illumination of 5,000 nits (candelas per square meter) during daylight hours and a maximum illumination of 500 nits (candelas per square meter) between dusk to dawn as measured from the sign's face at maximum brightness. Dynamic LED signs must have an automatic dimmer control to produce a distinct illumination change from a higher illumination level to a lower level for the time period between one-half hour before sunset and one half-hour after sunrise. 8. Dynamic LED signs existing on the effective date of Ordinance 1593, passed April 25, 2011, must comply with the operational standards listed above. An existing dynamic LED sign that does not meet the structural requirements may continue as a non-conforming sign subject to § 9.105(E). 9. The area around the base of the sign shall be landscaped and mulched. 10. A sign permit is required to be reviewed and issued prior to installation. Once the sign and landscaping are installed, a site inspection must be scheduled with the City Planner. Contact the Community Development Department to obtain a sign permit, and schedule the site inspection. ATTACHMENTS Resolution No. 2019-70 Application Applicant’s Narrative Sign renderings Sign Location Map RESOLUTION NO. 2019-70 A resolution of the City Council for the City of Columbia Heights, Minnesota, approving a Conditional Use Permit for a dynamic LED sign for Hamilton Sign located at 3836 Stinson Blvd. NE Whereas, a proposal (Case #2019-0901) has been submitted by Hamilton Sign on behalf of Minnesota Family Church to the City Council requesting a Conditional Use Permit from the City of Columbia Heights at the following site: ADDRESS: 3836 Stinson Blvd. NE LEGAL DESCRIPTION: On file at City Hall. THE APPLICANT SEEKS THE FOLLOWING: A Conditional Use Permit per Code Section 9.106 (P) (11) (c) (2), to allow a dynamic LED sign to be located in the Limited Business Zoning District. Whereas, the Planning and Zoning Commission held a public hearing as required by the City Zoning Code on September 4, 2019; Whereas, the City Council has considered the advice and recommendations of the Planning and Zoning Commission regarding the effect of the proposed Conditional Use Permit upon the health, safety, and welfare of the community and its Comprehensive Plan, as well as any concerns related to compatibility of uses, traffic, property values, light, air, danger of fire, and risk to public safety in the surrounding areas; Now, therefore, in accordance with the foregoing, and all ordinances and regulations of the City of Columbia Heights, the City Council of the City of Columbia Heights makes the following: FINDINGS OF FACT (a) The use is one of the conditional uses listed for the zoning district in which the property is located, or is a substantially similar use as determined by the Zoning Administrator. (b) The use is in harmony with the general purpose and intent of the Comprehensive Plan. (c) The use will not impose hazards or disturbing influences on neighboring properties. (d) The use will not substantially diminish the use of the property in the immediate vicinity. (e) The use will be designed, constructed, operated, and maintained in a manner that is compatible with the appearance of the existing or intended character of the surrounding area. (f) The use and property upon which the use is located are adequately served by essential public facilities and services. (g) Adequate measures have been or will be taken to minimize traffic congestion on the public streets and to provide for appropriate on-site circulation of traffic. (h) The use will not cause a negative cumulative effect, when considered in conjunction with the cumulative effect of other uses in the immediate vicinity. City of Columbia Heights - Council Resolution Page 2 (i) The use complies with all other applicable regulations for the districts in which it is located. Further, be it resolved, that the attached plans, maps, and other information shall become part of this Conditional Use Permit and approval; and in granting this Conditional Use Permit the City and the applicant agree that this permit shall become null and void if the project has not been completed within one (1) calendar year after the approval date, subject to petition for renewal of the permit. The Conditional Use Permit is subject to certain conditions of approval that have been found to be necessary to protect the public interest and ensure compliance with the provisions of the Zoning and Development Ordinance, including: CONDITIONS 1. Dynamic LED signs are allowed only on monument signs for conditionally permitted uses in all zoning districts, with the exception of the PO, Public District, in which LED signage may be utilized in existing pylon signs. All dynamic LED signs may occupy no more than 60% of the actual copy and graphic area. The remainder of the sign must not have the capability to have dynamic LED signs, even if not used. Only one, contiguous dynamic display area is allowed on a sign face. 2. A dynamic LED sign may not change or move more often than once every ten seconds for commercial, industrial uses, or public uses, and no more than once every ten minutes for religious and/or educational institution uses, except one for which changes are necessary to correct hour-and-minute, date, or temperature information. 3. A display of time, date or temperature information may change as frequently as once every five seconds, however information displayed not relating to the date, time or temperature must not change or move more often than once every ten seconds for commercial, industrial uses, or public uses, and no more than once every ten minutes for religious and/or educational institution uses. 4. The images and messages displayed must be static, and the transition from one state display to another must be instantaneous without any special effects. Motion, animation and video images are prohibited on dynamic LED sign displays. 5. The images and messages displayed must be complete in themselves, without continuation in content to the next image or message or to any other sign. 6. Dynamic LED signs must be designed and equipped to freeze the device in one position if a malfunction shall occur. The displays must also be equipped with a means to immediately discontinue the display if it malfunctions, and the sign owner must immediately stop the dynamic display when notified by the city that it is not complying with the standards of this section. 7. Dynamic LED signs may not exceed a maximum illumination of 5,000 nits (candelas per square meter) during daylight hours and a maximum illumination of 500 nits (candelas per square meter) between dusk to dawn as measured from the sign's face at maximum brightness. Dynamic LED signs must have an automatic dimmer control to produce a distinct illumination change from a higher illumination level to a lower level for the time period between one-half hour before sunset and one half-hour after sunrise. City of Columbia Heights - Council Resolution Page 3 8. Dynamic LED signs existing on the effective date of Ordinance 1593, passed April 25, 2011, must comply with the operational standards listed above. An existing dynamic LED sign that does not meet the structural requirements may continue as a non-conforming sign subject to § 9.105(E). 9. The area around the base of the sign shall be landscaped and mulched. 10. A sign permit is required to be reviewed and issued prior to installation. Once the sign and landscaping are installed, a site inspection must be scheduled with the City Planner. Contact the Community Development Department to obtain a sign permit, and schedule the site inspection. ORDER OF COUNCIL Passed this 9th day of September, 2019. Offered by: Seconded by: Roll Call: Donna Schmitt, Mayor Attest: Nicole Tingley, City Clerk/Council Secretary Date: 2-27-17 Revision: v.1 Drawn By: ______ Description P.O. Box 148 Rosemount, MN 55068 651-247-8224 651-322-7936 Fax sales@hamiltonsign.com * This drawing is the property of Hamilton Sign Co. It is submitted to your company for the sole purpose of your consideration of whether to purchase a sign(s) manufactured according to these plans from Hamilton Sign Co. Distribution or exhibition of this plan to anyone other than employees of your company or use of this plan for construction of a similar sign to the one(s) created herein, is forbidden. In the event that such exhibition occurs, Hamilton Sign Co. will expect to be reimbursed for the time and materials used in creating this drawing. Minnesota Family Church Electronic message center D/F INTERNALLY LED ILLUMINATED CABINET 4’-8” X 6’-9” Daktronics 7.24.19 Concrete required.207 cu yds Using: 24” Dia. x 48” deep =.465 cu. yds 6'-9" 40% Static 60% Changable 6” x 6” x 1/4” Tube SqDirect burial. 4'-0" 24” dia"24” dia" Monument Double face 3’-8” x 6’-9” EMC & 27 X 6’-9” internally LED illuminated cabinet40% Static header name 60% EMC display full color Total sq. ft. 40.6Scale 1/2” =1’-0”Scale 1/4” =1’-0” 2'-3 " 3'-8" End Elevation Elevation placement & Drop Detail A Front & rear Elevation 6"6"6" ground levelpitched Detail A 6'-9" 8" elevation drop 8" elevation drop 15" elevation dropfrom back of sign tp curb level 23" Drop from front of sign to trail and curb height 23" total drop15 elevation drop Align sign with front edgeof building.This is 5’ set back 16" Stone to matchbuilding stone7’-11" 2'-3" 3'-8"7'-3" 5'-0" set back Minnesota Family Church Minnesota Family Church 24" 3'-8" 2'-3" 1'-6 " 7'-11" 5'-11" Minnesota Family Church Customer Copy HereCustomer Copy HereMinnesota Family ChurchDouble faced monument Date: 2-27-17 Revision: v.1 Drawn By: ______ Description P.O. Box 148 Rosemount, MN 55068 651-247-8224 651-322-7936 Fax sales@hamiltonsign.com * This drawing is the property of Hamilton Sign Co. It is submitted to your company for the sole purpose of your consideration of whether to purchase a sign(s) manufactured according to these plans from Hamilton Sign Co. Distribution or exhibition of this plan to anyone other than employees of your company or use of this plan for construction of a similar sign to the one(s) created herein, is forbidden. In the event that such exhibition occurs, Hamilton Sign Co. will expect to be reimbursed for the time and materials used in creating this drawing. Minnesota Family Church 7.25.19 6’-9”6’-9” 5’-11”5’-11” Double faced monument with 27” x 6’-9” cabinet Internally LED illuminated and D/F Electronic message display 3’-8” X 6’-9” 27” x 6’-9” cabinet Internally LED illuminated and Electronic message display3’-8” X 6’-9”40% Static header name 60% EMC display full color * See Detail A for elevation drop Align front edge of sign with front edge of buildingThat is the 5’-0” code set back. See elevation Detail A page 2 Electronic message DisplayDaktronics 4’-8” x 6’-9” Concrete required.207 cu yds Using: 24” Dia. x 48” deep =.465 cu. yds 6'-9" 40% Static 60% Changable 6” x 6” x 1/4” Tube SqDirect burial. 4'-0" 24” dia"Total sq. ft. 40.6Scale 1/2” =1’-0” 2'-3 " 3'-8" Front & rear Elevation ground levelpitched Detail A Stone to matchbuilding stone Minnesota Family Church Minnesota Family Church 24" 3'-8" 2'-3" 7’-11" 5’-0”" 5’-0” SET BACK. Minnesota Family Church Minnesota Family Church SIDE 1 SIDE 2 CITY OF COLUMBIA HEIGHTS PLANNING COMMISSION PLANNING REPORT 4141 University Ave NE CASE NUMBER: 2019-0902 DATE: September 4, 2019 TO: Columbia Heights Planning Commission APPLICANT: Friends of Prodeo DEVELOPMENT: Proposed k-8 School LOCATION: 4141 University Ave NE Columbia Heights, MN 55421 REQUEST: Conditional Use Permit, Site Plan Review, Variances PREPARED BY: Elizabeth Hammond, City Planner INTRODUCTION Friends of Prodeo has applied for a Conditional Use Permit, Site Plan Review and Variances for the property located at 4141 University Ave NE. The applicant wishes to establish a K-8 school on the property, and by City Code, a Conditional Use Permit is required for all k-12 schools, public or private. In addition, the applicant is proposing to tear down the existing buildings on the property and build a new educational facility, which requires a Site Plan to be reviewed. As part of the proposed Site Plan, the applicant is requesting a Variance to the building height, lot coverage, and parking setback requirement. According to City record the property was originally developed as Oakwood School in the early half of the 20th century, and used solely as a school until around 1975, when a chapel was added on to the building. Since that time it has been known as Oak Hill Church, and at times had few smaller schools operating in the building over the years alongside the church. The existing building is in need of various repairs and is in poor condition, and due to the fact that the church’s congregation size has reduced over the years, the representatives from the church had been looking at selling the property to find a smaller up to date location. Prodeo Academy, once operated in First Lutheran Church on 40th Ave NE in Columbia Heights, where they rented space starting 2013, up until a couple years ago when they outgrew the space. They have been renting space in Minneapolis and looking for a permanent location. They have purchased the property with the intent of removing the existing building and constructing a new school, with landscaping improvements and storm water management improvements on site. The attached Site Plan drawings detail the proposed location of the building and where the site improvements will be located. City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 2 ZONING ORDINANCE The subject property is located in the R-3, multiple-family residential zoning district as are the surrounding properties to the north, south, east and west. K-12 Schools, public or private are a permitted conditional use, (meaning a conditional use permit is required), in this zoning district. COMPREHENSIVE PLAN The Comprehensive Plan guides this property for institutional development, which includes religious facilities, public and private educational facilities, fire stations, libraries, water system facilities, and any other City, County, or State use. Removing the aging building and rebuilding a new educational facility with landscaping and storm water improvements meets the intent of the Comprehensive Plan. SITE PLAN 1. Parking The proposed plan identifies 67 parking stalls. For a school serving elementary and junior high students, the Zoning Code requires 10 parking stalls plus 1 parking stall for every classroom in the building. In this case there are 43 classrooms, so by that standard the applicant is required to provide 53 parking stalls. The proposed site plan exceeds the requirement by providing an additional 14 stalls. 2. Access The site will be served by two entry points, one that will be a one way entry to the site and another that will be a two way entry point (entry and exit) on the site, and an additional one way exit as outlined on the site plan. 3. Landscape The proposed landscaping materials are shown on the attached landscape plan. The applicant is proposing to plant trees, shrubs and grasses which will complement the layout of the development. The plan meets the City’s landscape requirements. Staff has added a requirement that extra screening be installed along the southern property line to provide additional visual screening and minimize noise for the adjacent residential property to the south. 4. Lot Dimension, Height and Setback Requirements The property meets the city’s code requirements for lot size for the proposed use. The building is articulated and attractive, and staff believes will fit well in the neighborhood in terms of size and appearance. The applicant has requested a variance to the height requirement for a portion of the building on the south end of the property. This part of the building will be three floors (as shown on the attached plan) and is proposed to be 41 feet at the highest point, exceeding the code allotment of 35 feet. The applicant argues that the need for the variance came from their best attempt to meet other code requirements for lot coverage and wanting to provide ample green space on site. Also, the property has significant grade changes on all three sides of the property, limiting the area that the building can be located and creating limits to grading activities, and a need to reduce the building footprint. City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 3 The building meets setback requirements; however the applicant is requesting a variance for the parking setback, reducing the setback from 30 feet from the property line to 15 feet. In order to provide adequate parking, on site circulation for drop off and pick, and appropriate locations for the bus lane, the parking lot is proposed to encroach into the required parking setback. This is a unique parcel, in that it has three street frontages, which by ordinances are considered front yards for setback purposes. The setback otherwise would be three feet. Staff believes that this request is reasonable as the proposed parking lot layout makes good use of the available space and still provides adequate screening and a distance of 15 feet to the property line. The final Variance request is in regards to a specific standard that the City’s zoning code outlines for k-12 schools, specifically a requirement that the parcel area must be four times the size of the building footprint. In this case, the applicant is requesting a variance of 2,518 sq. ft. for the building footprint. The code would allow for the applicant to have up to 32,840 sq. ft. of building footprint, whereas the applicant is proposing a building footprint of 35,358 sq. ft. Staff believes this is a reasonable request for the site, and does not anticipate that it will make a significant difference in the function of the pedestrian and vehicular movement on site. 5. Other Signage will be addressed administratively, through the sign permit process. FINDINGS OF FACT Section 9.104 (H) of the Zoning Ordinance outlines findings of fact that must be met in order for the City to approve a Conditional Use Permit. They are as follows: (a) The use is one of the conditional uses listed for the zoning district in which the property is located, or is a substantially similar use as determined by the Zoning Administrator. This is correct. K-12 schools, public or private, are specifically listed as a permitted conditional use in the zoning district. (b) The use is in harmony with the general purpose and intent of the Comprehensive Plan. The Comprehensive Plan guides this property for institutional use. The property is proposed to be used as it has been historically, and as guided in the Comprehensive Plan, for an institutional use; therefore the proposed use is in harmony with the purpose and intent of the Comprehensive Plan. (c) The use will not impose hazards or disturbing influences on neighboring properties. This is correct. The applicant will adhere to specific development standards as it relates to K-12 schools, which are meant for unique characteristics of certain land uses. The standards are meant to protect the neighboring properties from any hazardous or disturbing influences. Also, due to the fact that the property has historically been used for a religious and educational facility, hazards or disturbing influences are not anticipated. City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 4 (d) The use will not substantially diminish the use of property in the immediate vicinity. Staff does not anticipate that the K-8 school operation will substantially diminish the use of the property in the surrounding area. (e) The use will be designed, constructed, operated and maintained in a manner that is compatible with the appearance of the existing or intended character of the surrounding area. Since the property has been used for institutional purposes since the neighborhood was developed, staff believes that the proposed development will be compatible with the appearance of the surrounding area and that the school will fit in with the character of the neighborhood. (f) The use and property upon which the use is located are adequately served by essential public facilities and services. This is correct. (g) Adequate measures have been or will be taken to minimize traffic congestion on the public streets and to provide for appropriate on-site circulation of traffic. The on-site circulation of traffic has been detailed in a traffic management plan. Staff believes the site plan minimizes traffic congestion on local roads. Staff has added a condition that if the school’s drop off and pick up routing results in delay on the surrounding local streets or has a negative traffic impact, a new traffic management plan will be required to be submitted for review to address operational deficiencies. (h) The use will not cause a negative cumulative effect, when considered in conjunction with the cumulative effect of other uses is the immediate vicinity. This is correct. (i) The use complies with all other applicable regulations for the district in which it is located. This is correct FINDINGS OF FACT Section 9.104 (N) of the Zoning Ordinance outlines findings of fact that must be met in order for the City to approve a Site Plan. They are as follows: a. The Site Plan conforms to all applicable requirements of this article. City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 5 The Site Plan meets the City’s requirements with the exception of the requested variance for a portion of the building height, lot coverage and parking setback. Staff believes that the applicant is proposing to use the property in a manner that is reasonable, and that the requested variances are unique to this property, and that the variances will not change the character of the area. The proposed building will be shorter than what is currently on the parcel, and the paved area will be reduced, improving storm water runoff conditions with proper storage, and overall site appearance with the additional landscaping. b. The Site Plan is consistent with the applicable provisions of the City’s Comprehensive Plan. This is correct. The Comprehensive Plan guides this area for institutional use. The proposed building is for an institutional use. c. The Site Plan is consistent with any applicable area plan. There is no area plan for this parcel. d. The Site Plan minimizes any adverse impacts on property in the immediate vicinity and the public right-of-way. This is correct. FINDINGS OF FACT Section 9.104 (G) of the Zoning Ordinance outlines five conditions that must be met in order for the City Council to grant a Variance. They are as follows: (a) Because of the particular physical surroundings, or the shape, configuration, topography, or other conditions of the specific parcel of land involved, strict adherence to the provisions of this article would cause practical difficulties in conforming to the zoning ordinance. The applicant, however, is proposing to use the property in a reasonable manner not permitted by the zoning ordinance. This is correct. Due to the elevation changes, desire to preserve green space and multiple street frontages, the most logical and practical place for the building and parking area is as proposed. It appears that the provisions of the code would cause a practical difficulty for the applicant. (b) The conditions upon which the variance is based are unique to the specific parcel of land involved and are generally not applicable to other properties within the same zoning classification. This is correct. The conditions are unique to this property due to the provision in the zoning code, the fact that the parcel has street frontage on three sides, and that there are grade changes on all side of the property. Also, it is important to note that there are not many parcels this size in this zoning district that would accommodate for a new school, without significant City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 6 land acquisition, thus the likelihood of other properties in the same zoning classification requesting these variances for a school is unlikely. (c) The practical difficulties are caused by the provisions of this article and have not been created by any person currently having a legal interest in the property. This is correct. (d) The granting of the variance is in harmony with the general purpose and intent of the Comprehensive Plan. This is correct. The proposed use of the property is consistent with the Comprehensive Plan. (e) The granting of the variance will not be materially detrimental to the public welfare or materially injurious to the enjoyment, use, development or value of property or improvements in the vicinity. This is correct. RECOMMENDATION Staff recommends that the Planning Commission recommend that the City Council approves the request for a Conditional Use Permit, Site Plan Review and Variances for the property located at 4141 University Ave NE. subject to the conditions listed below. Motion: Move to waive the reading of Resolution No. 2019-71, there being ample copies available to the public. Motion: Move to recommend that the City Council approve the conditional use permit and proposed site plans for a K-8 school to be located on the property at 4141 University Ave NE., subject to certain conditions of approval. 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. All on-site mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Screening may be accomplished through the use of walls or other design features that are architecturally compatible with the principal structure, screening vegetation, landscaping and integrated parapet walls of sufficient height, or other means as approved by the Zoning Administrator. 3. Trash and/or recycling collection areas shall be enclosed on at least three sides by an opaque screening wall or fence no less than six feet in height. The open side of the enclosure shall not face any public street or the front yard of any adjacent property. 4. The applicant will install stop signs on the two driveway exits. 5. The applicant will install additional screening along the southern property boundary to minimize visual and noise impact to the adjacent residential property. The screening will consist of landscaping and can include fencing as approved by the Zoning Administrator. City of Columbia Heights Planning Commission September 4, 2019 Planning Report Page 7 A plan detailing additional screening along this boundary shall be submitted and approved prior to the issuance of a building permit. 6. A fence no less than 4 feet shall run around the full perimeter of the southern end of the property and include the area south of the building and wrap around to include the playground area on the east side of the building. 7. If the school’s drop off and pick up routing results in delay on the surrounding local streets or has a negative traffic impact, a new traffic management plan will be required to be submitted for review to address operational deficiencies. 8. The applicant will install at minimum, two bike racks on the property adjacent to the building entrances, or near the playground and/or where practical. 9. The property owner and the City will enter in to a development contract governing site improvements and shall be executed by the property owner and the City prior to the issuance of a building permit. 10. The applicant shall meet requirements outlined in the Public Works Department Review Letter, dated August 26, 2019. 11. All City storm water management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. 12. The applicant shall meet requirements outlined in the Fire Department Review Letter, dated August 27, 2019. 13. Site and elevation plans included in this submittal, shall become part of this approval. 14. All other applicable local, state, and federal requirements shall be met at all times. ATTACHMENTS Resolution No. 2019-71 Applications Letter of Support for MWMO Grant Application Public Works Department Review Letter Fire Department Review Letter Applicant’s Narratives Site Plans Transportation Management Plan Turning Template Exhibits Storm Water Management Report RESOLUTION NO. 2019-71 A resolution of the City Council for the City of Columbia Heights, Minnesota, approving a Conditional Use Permit, and a Site Plan with Variances for 4141 University Ave NE. Columbia Heights, MN 55421, (PID 35-30- 24-24-0191). Whereas, a proposal (Case #2019-0902) has been submitted by Friends of Prodeo to the City Council requesting a Conditional Use Permit, and Site Plan Review with Variances to allow for the construction and operation of a K-8 school at the following site: ADDRESS: 4141 University Ave NE. Columbia Heights, MN 55421 LEGAL DESCRIPTION: On file at City Hall. THE APPLICANT SEEKS THE FOLLOWING: A Conditional Use Permit, and Site Plan Review with Variances Whereas, the Planning and Zoning Commission held a public hearing as required by the City Zoning Code on September 4, 2019; Whereas, the City Council has considered the advice and recommendations of the Planning and Zoning Commission regarding the effect of the proposed Conditional Use Permit, Site Plan and Variances upon the health, safety, and welfare of the community and its Comprehensive Plan, as well as any concerns related to compatibility of uses, traffic, property values, light, air, danger of fire, and risk to public safety in the surrounding areas; Now, therefore, in accordance with the foregoing, and all ordinances and regulations of the City of Columbia Heights, the City Council of the City of Columbia Heights makes the following: FINDINGS OF FACT Conditional Use (a) The use is one of the conditional uses listed for the zoning district in which the property is located, or is a substantially similar use as determined by the Zoning Administrator. (b) The use is in harmony with the general purpose and intent of the Comprehensive Plan. (c) The use will not impose hazards or disturbing influences on neighboring properties. (d) The use will not substantially diminish the use of the property in the immediate vicinity. (e) The use will be designed, constructed, operated, and maintained in a manner that is compatible with the appearance of the existing or intended character of the surrounding area. (f) The use and property upon which the use is located are adequately served by essential public facilities and services. (g) Adequate measures have been or will be taken to minimize traffic congestion on the public streets and to provide for appropriate on-site circulation of traffic. City of Columbia Heights - Council Resolution Page 2 (h) The use will not cause a negative cumulative effect, when considered in conjunction with the cumulative effect of other uses in the immediate vicinity. (i) The use complies with all other applicable regulations for the districts in which it is located. Site Plan a) The site plan conforms to all applicable requirements of this article. b) The site plan is consistent with the applicable provisions of the City’s Comprehensive Plan. c) The site plan is consistent with any applicable area plan. d) The site plan minimizes any adverse impacts on property in the immediate vicinity and the public right-of-way. Variance (a) Because of the particular physical surroundings, or the shape, configuration, topography, or other conditions of the specific parcel of land involved, strict adherence to the provisions of this article would cause practical difficulties in conforming to the zoning ordinance. The applicant, however, is proposing to use the property in a reasonable manner not permitted by the zoning ordinance. (b) The conditions upon which the variance is based are unique to the specific parcel of land involved and are generally not applicable to other properties within the same zoning classification. (c) The practical difficulties are caused by the provisions of this article and have not been created by any person currently having a legal interest in the property. (d) The granting of the variance is in harmony with the general purpose and intent of the Comprehensive Plan. (e) The granting of the variance will not be materially detrimental to the public welfare or materially injurious to the enjoyment, use, development or value of property or improvements in the vicinity. Further, be it resolved, that the attached plans, maps, and other information shall become part of this Conditional Use Permit, and Site Plan approval; and in granting this Conditional Use Permit and Site Plan approval with variances, the City and the applicant agree that this permit shall become null and void if the project has not been completed within one (1) calendar year after the approval date, subject to petition for renewal of the permit. This approval is subject to certain conditions that have been found to be necessary to protect the public interest and ensure compliance with the provisions of the Zoning and Development Ordinance, including: CONDITIONS 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. All on-site mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Screening may be accomplished through the use of walls or other design features that are architecturally compatible with the principal structure, City of Columbia Heights - Council Resolution Page 3 screening vegetation, landscaping and integrated parapet walls of sufficient height, or other means as approved by the Zoning Administrator. 3. Trash and/or recycling collection areas shall be enclosed on at least three sides by an opaque screening wall or fence no less than six feet in height. The open side of the enclosure shall not face any public street or the front yard of any adjacent property. 4. The applicant will install stop signs on the two driveway exits. 5. The applicant will install additional screening along the southern property boundary to minimize visual and noise impact to the adjacent residential property. The screening will consist of landscaping and can include fencing as approved by the Zoning Administrator. A plan detailing additional screening along this boundary shall be submitted and approved prior to the issuance of a building permit. 6. A fence no less than 4 feet shall run around the full perimeter of the southern end of the property and include the area south of the building and wrap around to include the playground area on the east side of the building. 7. If the school’s drop off and pick up routing results in delay on the surrounding local streets or has a negative traffic impact, a new traffic management plan will be required to be submitted for review to address operational deficiencies. 8. The applicant will install at minimum, two bike racks on the property adjacent to the building entrances, or near the playground and/or where practical. 9. The property owner and the City will enter in to a development contract governing site improvements and shall be executed by the property owner and the City prior to the issuance of a building permit. 10. The applicant shall meet requirements outlined in the Public Works Department Review Letter, dated August 26, 2019. 11. All City storm water management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. 12. The applicant shall meet requirements outlined in the Fire Department Review Letter, dated August 27, 2019. 13. Site and elevation plans included in this submittal, shall become part of this approval. 14. All other applicable local, state, and federal requirements shall be met at all times. ORDER OF COUNCIL Passed this 9th day of September, 2019. Offered by: Seconded by: Roll Call: Donna Schmitt, Mayor Attest: Nicole Tingley, City Clerk/Council Secretary CITY OF COLUMBIA HEIGHTS Public Works Department TO: ELIZABETH HOLMBECK CITY PLANNER FROM: KEVIN HANSEN PUBLIC WORKS DIRECTOR/CITY ENGINEER LAUREN LETSCHE STORMWATER SPECIALIST DATE: August 26, 2019 SUBJECT: Prodeo Academy I have reviewed the site plan and storm water calculations submittal packet dated 8/7/2019, and have the following requirements/comments for final approval by PW/Engineering: General / Plat  The City shall require a pre-construction conference prior to any land alteration activities beginning.  The maintenance of the storm sewer BMP shall be defined in a separate planning document and will require an easement per City and MWMO requirements.  Comments herein are based on the City submittal plans. Final review comments will be based on from the final or construction plan set.  Transportation Management Plan: is there any additional information available to indicate PM exit routing of the buses to University Avenue? Grading / Landscaping  The plan set will require an erosion control plan and project SWPPP, meeting City and MWMO requirements.  Prior to site activities, please provide the City with a copy of Site NPDES Construction Permit.  Perimeter and entrance erosion control measures shall be installed and inspected by the Engineering department prior to site grading activities beginning. Coordinate erosion control measures with the Engineering department if building construction is initiated prior general site grading.  All slopes greater than 4:1 shall be provided erosion control blanket.  Catch basin inlet protection, such as Wimco’s or equivalent shall be provided on catch basins until restoration is completed. The low point CB’s immediately adjacent to the project shall also be protected.  Location of tree installations and utility locations should be coordinated to maintain 10’ separation from all utilities. ROW / Utilities / Paving  All utilities and storm water features serving the Development shall be privately owned and maintained. All utilities shall meet the City of Columbia Heights specifications for materials and installation.  Site/Civil work shall be inspected by the City Engineering Department (connection to existing utility system). 24-hour advance notice of an inspection is required.  The Storm Water Plan generally meets the requirements of the City for post < pre development rate control but it is unclear how the 1.1 inch is being infiltrated on site (MWMO Standard Appendix D).  The storm water report indicates infiltration within the infiltration BMP. Please provide soil borings to verify infiltration rates.  Pretreatment measures must be consistent with the Minnesota Stormwater manual. The stormwater report indicated additional pretreatment may come from the StormTech SC-310. The Minnesota Stormwater Manual provides that the first row would be sacrificial for pretreatment. If only 1 row of the SC-310 is being used, please provide additional pretreatment.  Provide a set of as-built drawings meeting City requirements at the completion of site/civil construction in both hardcopy and electronic (pdf) format.  All stormwater best management practices (BMP’s) need to be placed in designated drainage and utility easements.  How will the roof drains be connected into the storm sewer (rate control)?  The slope of the 12” HDPE at the outlet of the storm sewer BMP develops velocities of 28 fps discharging into an existing structure. Please adjust so that velocities to not exceed 10 fps.  Segments of the storm sewer pipes are shown with a 0.30% grade. For constructability, we would recommend a 0.50% grade.  The City does not allow sewer service connections into manholes. Please modify the new sanitary sewer service on 4th Street to a minimum of 3 feet outside of the manhole.  The size of the existing water service needs to be field verified – it may be a 4-inch line.  The existing utility disconnects including the sanitary on 4th Street and water service on University Service Drive, must be made be made in accordance with City standards and inspected by the utility department.  How will the ‘grade break’ be accomplished on the 12” storm sewer on the south side of the parking lot near the entrance drive?  Please add ‘stop’ signs at the development driveway exit(s). Please provide one full size and one 11x17 set of Final or Construction Plans to the Engineering department prior to construction. If you have any questions or need further information, please contact me at (763) 706-3705. C: Kathy Young, Assistant City Engineer Lauren Letsche, Storm Water Specialist KH:kh G: \Users\Public Works\plan reviews\2019\Prodeo Academy_08262019.doc 20190827 Prodeao Academy Site Plan Review.docx 08/27/2019 Prodeo Academy Site Plan 4141 University Ave NE Rehder & Associates. Inc. Review of the Prodeo Academy Site Plan is complete. This review consisted of the C.2 document dated 8/7/2019. The following report evaluates the site plan drawings for compliance with the Minnesota State Fire and Building Codes, NFPA Standards, and Columbia Heights Fire Department Policies. Based on description in applicant’s narrative, the review is based on the building having a MN State Fire Code Group E – Educational occupancy classification. 1. The occupancy use of the proposed building requires the installation of an approved automatic sprinkler system throughout the building. 2. The occupancy use of the proposed building requires the installation of an approved fire alarm system. 3. Submitted plans do not illustrate locations of fire department sprinkler system connection, hydrant locations, fire lanes, or fire department access roads. Applicant shall submit site plan addressing fire protection features prior to site approval. 4. Applicant is required to comply with all applicable Minnesota State Fire and Building Codes, NFPA Standards, and Columbia Heights Fire Department Policies. 5. Information for Applicant’s Traffic turning template Aerial Fire Truck • Overall length: 41ft 6 in • Overall width: 10ft 6in • Overall Body Height: 11ft 6 in • Min Body Ground Clearance: 7 in • Angle of Approach: 5.4 degrees • Angle of Departure: 4.3 degrees • GVWR: 73,500 Respectfully submitted, Captain Daniel O’Brien Prodeo Academy Site Plan Application Narrative Friends of Prodeo Inc., an Affiliated Building Company of Prodeo Academy intends to purchase and redevelop the site located at 4141 University Ave NE for use as a PreK-8 pubic charter school. The site is currently occupied by Oak Hill Baptist Church and is surrounded by residential properties. University Ave. Service Road and University Ave. are immediately west of the site. Prodeo Academy is a network of college preparatory schools that develop students to be critical thinkers and intelligent leaders, expanding their opportunities to contribute positively and productively to society. Founded in 2013 in the City of Columbia Heights, Prodeo Academy currently operates a Minneapolis campus servings 575 students in grades Pre-K-5 and a St. Paul campus serving 75 students in grades K-1. Friends of Prodeo Inc. will lease to Prodeo Academy, allowing it to relocate its existing and growing Minneapolis program to the new site at 4141 University Ave. NE., eventually serving 910 students in grades Pre-Kindergarten through eighth. Prodeo’s new facility development will include the demolition of the existing buildings and construction of a new school building, including gymnasium, a playground, greenspace, improved landscaping, and a 67-space surface parking lot. In order to minimize traffic congestion on public streets, the parking lot configuration provides on-site circulation of traffic and will accommodate all arrival and dismissal activities on-site. When complete, the school will be approximately 71,900 square feet in size. The building will offer PreK- 8th grade classroom spaces including science labs, a music room, art room, student support spaces, and administration spaces. Amenities such as a gymnasium, stage, student/community commons spaces, a service kitchen, and cafeteria, will accommodate a full range of PreK-8 and community programming. Prodeo Academy is also seeking a planning grant and action grant through the Mississippi Watershed Management Organization to explore additional and innovative storm water management strategies on site beyond code requirements. Prodeo Academy Conditional Use Permit Application Narrative Friends of Prodeo Inc., an Affiliated Building Company of Prodeo Academy intends to purchase and redevelop the site located at 4141 University Ave NE for use as a PreK-8 pubic charter school. The site is currently occupied by Oak Hill Baptist Church and is surrounded by residential properties. University Ave. Service Road and University Ave. are immediately west of the site. Prodeo Academy is a network of college preparatory schools that develop students to be critical thinkers and intelligent leaders, expanding their opportunities to contribute positively and productively to society. Founded in 2013 in the City of Columbia Heights, Prodeo Academy currently operates a Minneapolis campus servings 575 students in grades Pre-K-5 and a St. Paul campus serving 75 students in grades K-1. Friends of Prodeo Inc. will lease to Prodeo Academy, allowing it to relocate its existing and growing Minneapolis program to the new site at 4141 University Ave. NE., eventually serving 910 students in grades Pre-Kindergarten through eighth. Prodeo’s new facility development will include the demolition of the existing buildings and construction of a new school building, including gymnasium, a playground, greenspace, improved landscaping, and 67 surface parking spaces. In order to minimize traffic congestion on the surrounding public streets, the on-site parking and drive configuration will accommodate all arrival and dismissal activities. (Just changing it up a bit from the previous paragraph) When complete, the school will be approximately 71,900square feet in size. The building will offer PreK- 8th grade classroom spaces including science labs, a music room, art room, student support spaces, and administration spaces. Amenities such as a gymnasium, stage, student/community commons spaces, a service kitchen, and cafeteria, will accommodate a full range of PreK-8 and community programming. Prodeo Academy is also seeking a planning grant and action grant through the Mississippi Watershed Management Organization to explore additional and innovative storm water management strategies on site beyond code requirements. Variance Application Narrative – Building Height Prodeo Academy is seeking a building height variance of 6’-0’’ for the proposed property. Existing code allows for a maximum height of 35’-0”. Prodeo is proposing a multi-story building with a maximum height of 41’-0”. The unique physical characteristics of the parcel, including significant grade change, narrow residential streets surrounding the property, and no access south on University Ave. Service Rd. cause practical difficulties in conforming to zoning ordinance that minimizes lot coverage and minimizes traffic congestion on public streets. Proposed building design is comprised of three elements each of varying heights the tallest of which is the three-story student classroom wing 41’-0”, a 28’-0” gymnasium and 18’-0”to 21’-6” student support and administrative area. Building massing and composition as illustrated in attached exhibit provides a building form which relates to and corresponds with the surrounding neighborhood. The variance request applies to the three story portion of proposed building containing student classrooms, as illustrated in attached exhibit. This site presents unique challenges that necessitated the introduction of a three-story building. The site has significant grade change from east to west with a differential of 20- to 30-feet across the site, depending on location. With the goal of constructing the simplest, accessible building the main level needed to be at one elevation. Taking the building upward, rather than outward, allowed us to reduce the footprint and allowed for more area around the building perimeter to mitigate the large differentials in grade. The second unique challenge of this site is the very narrow public streets on two sides (west and north). Typically a school in a similar setting would make use of surrounding public streets for some portion of pick up or drop off of students. Given these limitations on the west and north sides, we made it an internal project goal to accommodate all pick up and drop off transactions internal to the site. Making this accommodation due to limited, adjacent public street width, requires more pavement surrounding the building on-site, which limits the available area for the building footprint, again driving the building upward vs. outward. As illustrated in the exhibit all building setbacks required are at a minimum double the required 30’-0” required per zoning and as such the impacts of building along street front and pedestrian walkways are greatly reduced. The 3-story 41’-0” building allows for greater site area for parking lot configuration that provides full on-site circulation of traffic and will accommodate all buses and parent drop-off/pickup fully on-site for both morning arrival and afternoon dismissal. The granting of the variance will be materially beneficial to the public welfare in minimizing traffic impacts, increasing available green space and improving access to light and air from current conditions given that the current Oak Hill Baptist structure is 42’-6”. Variance Application Narrative – Lot Coverage Prodeo Academy is seeking a lot coverage variance of 2,519 square feet (SF) for the proposed property. Existing K-12 school specific development standards requires a 4:1 ratio for lot area to building footprint, or 32,840-SF footprint on the 131,359-SF lot. Prodeo is proposing a 35,358-SF footprint or a 3.72:1 ratio. This site is unique in that it is encumbered by a right-of-way (ROW) easement along its westerly boundary that was likely established when MN/DOT took property for both University Avenue and the Service Road. The ROW taken for the easement is approximately 24-feet east of the easterly curb line of the Service Road, which is well in excess of typical boulevard widths within the City. The width taken by MN/DOT may have been based on anticipated needs for future expansion. It is our understanding that MN/DOT has now turned the Service Road back to the City of Columbia Heights. Typical boulevards in the City are approximately 14-feet where sidewalks are present and much less where there are no sidewalks. If the boulevard were a more typical 14-feet (not the existing 24-feet), the effective lot area would increase to 136,250-SF and an effective coverage ratio of 3.85 (still requiring a variance, but less so). The effective lot width necessary to provide the full 4:1 ratio would place the effective lot line approximately 3.5-feet east of the east curb line. This is a very narrow boulevard, but not unprecedented in the City. To be clear, we are not requesting a vacation of any portion of the ROW easement. The discussed “effective” lot line locations, resulting areas, and ratios were for illustrative purposes only. Approval of variance will provide site configuration which addresses handicap accessibility, maximizes green space and minimizes traffic congestion on public streets. The 35,358-SF building footprint provides a design that supports building entry points for a parking lot configuration that provides full on- site circulation of all traffic and will accommodate buses and parent drop-off/pickup fully on-site for both morning arrival and afternoon dismissal. Prodeo Academy has committed thru application for MWMO Planning Grant to explore and design additional innovative water management strategies beyond code minimum and to facilitate community engagement and awareness of water management. Prodeo will also be applying for an Action Grant of $50,000 to further best practices to site development and limit run off impacts. To best preserve community green space and better the hydrological impact of the site within the watershed district the proposed site configuration looks to reduce the current impervious area from 84,872-SF to 79,744-SF. Furthermore, Prodeo Academy intends to build a new playground onsite which will be made available for neighborhood use. Variance Application Narrative – Parking Setback Prodeo Academy is seeking a parking lot setback variance of 15’-0’’ for the front yard (42nd Ave. NE) and the corner sides (4th Street and University Ave Service Road). Parking setback of 30’-0” is required for front yard and corner sides. This site is unique in its configuration and surrounding public improvements. The site is bound on three sides by public rights-of-way. This means that the site is constrained on three sides by 30-foot front and corner side parking setbacks. A more typical site would be constrained by one or, possibly, two 30-foot parking setbacks that, without a variance, might have allowed for the necessary site area for this project. Secondly, and as discussed in one of our other variance narratives, two of the three surrounding streets are very narrow, limiting student pick up or drop off activities. With an internal project goal of constraining all pick up and drop off transactions internal to the site and providing on-site parking well beyond the city-required minimums, there is a need to push parking setbacks to the currently-proposed 15-feet. Prodeo is proposing a 15’-0” setback to all parking areas with appropriate screening and landscaping per ordinance. The unique physical characteristics of the parcel, including significant grade change, narrow residential streets surrounding the property, and classification as double corner lot cause hardship in conforming to zoning ordinance. A 15’-0” setback variance for the corner side and front yard allows for a parking lot configuration that provides full on-site circulation of traffic and will accommodate all buses and parent drop-off/pickup fully on-site for both morning arrival and afternoon dismissal. Site configuration has been developed to place largest areas of paving / parking along the site’s westerly boundary where no adjacent homeowners will be impacted. Parking lot area at north will be provided landscape buffer comprised of both plantings and decorative fencing aligning with the city ordinances. Granting of the variance will be materially beneficial to the public welfare in minimizing traffic impacts and preserving open green space. Please refer to existing conditions photos which illustrate what will be the continued minimal visual impacts of parking areas on site due to grade and improved landscape plantings and decorative fencing as planned lots effectively are in similar locations but further set back from property lines than current 9’ lot setbacks. Symbols DETAIL NUMBER SHEET NUMBER AREA TO BE DETAILED OR ENLARGED ACTUAL NORTH (IF DIFFERENT) REVISION TYPE SHEET NUMBER SECTION NUMBER 5 A8.1 MATCH LINE SHEET NUMBER ELEVATION NUMBER A7.2 12 13 14 15 NORTH ARROW DETAIL REFERENCESECTION REFERENCE REVISION IDENTIFICATIONTITLE MARKER ROOM IDENTIFICATION ROOM NAME ROOM NUMBER DOOR TAG BREAKLINE ELEVATION REFERENCE WALL TAGWINDOW TAG ELEVATION LABEL MATCHLINE IDENTIFICATION NOTE IDENTIFICATION (LEADER OPTIONAL) 10 A7.1 1 1 A5.1 TOILET ROOM 204 T.O. STL. 100'-0"2041 VIEW TITLE VIEW SCALE W205 1ASI 5A SEQUENTIAL INDICATOR APPROXIMATE THICKNESS IN INCHES N (WHEN REQ'D) REPRESENTS NEW DOOR REPRESENTS EXISTING DOOR TO REMAIN REPRESENTS EXISTING DOOR TO BE REMOVED. WALLS WITH HATCH INDICATE NEW CONSTRUCTION WALLS SHADED GRAY INDICATE EXISTING TO REMAIN DASHED LINES INDICATE WALLS & ITEMS TO BE REMOVED. PLAN NORTH REVISION NUMBER EARTH COMPACT FILL/SAND POROUS FILL/GRAVEL FACE BRICK MORTAR/PLASTER CMU CONCRETE RIGID INSULATION BATT INSULATION STUD WALL/METAL PLYWOOD GYPSUM BOARD FINISHED WOOD CONT. ROUGH WOOD WOOD BLOCKING BITUMINOUS Materials Star Indicates Project Location ÉåêáÅÜáåÖ ÅçããìåáíáÉë íÜêçìÖÜ ~êÅÜáíÉÅíìêÉ ÇìäìíÜ=G=îáêÖáåá~G=íïáå=ÅáíáÉë ïïïKÇëÖïKÅçã Çê~ïå=ÄóW ÅÜÉÅâÉÇ=ÄóW íóéÉÇLéêáåíÉÇ= å~ãÉW êÉÖK=@W ëáÖå=Ç~íÉW Ç~íÉW éêçàÉÅí=@W ëáÖå~íìêÉW f=ÜÉêÉÄó=ÅÉêíáÑó=íÜ~í=íÜáë=éä~åI= ëéÉÅáÑáÅ~íáçåI=çê=êÉéçêí=ï~ë= éêÉé~êÉÇ=Äó=ãÉ=çê=ìåÇÉê=ãó=ÇáêÉÅí= ëìéÉêîáëáçå=~åÇ=íÜ~í=f=~ã=~=Çìäó= iáÅÉåëÉÇ=^êÅÜáíÉÅí=ìåÇÉê=íÜÉ=ä~ïë= çÑ=íÜÉ=ëí~íÉ=çÑ=jáååÉëçí~K Randy Wagner 21068 ëÜÉÉí=íáíäÉW ëÜÉÉí= åìãÄÉêW 8/7/2019 9:07:20 AM 019062.00 Author Checker Issue Date Prodeo Academy 4141 University Ave NE Columbia Heights, MN 55421 A0.1 Title Sheet Sheet Index Perspective Views 0-Cover Sheet A0.1 Title Sheet 1-Civil C0.0 ALTA Survey C1.0 Site Demolition Plan C2.0 Site Dimension Plan C3.0 Grading, Drainage, & Erosion Control Plan C4.0 Grading, Drainage, & Erosion Control Plan C5.0 Details 2-Architectural A5.1 Exterior Elevations LA1.0 Landscape Plan Location Map Abbreviations Project Number: Prodeo Academy 4141 University Ave NE Columbia Heights, MN 55421 019062.00 Architectural General Notes LAM LAMINATE LVT LUXURY VINYL TILE MAX MAXIMUM MECH MECHANICAL MIN MINIMUM MISC MISCELLANEOUS MTL METAL NIC NOT IN CONTRACT NTS NOT TO SCALE OC ON CENTER OD OVERFLOW DRAIN P.T.PRESSURE TREATED PC PRECAST PLAM / P.LAM. PLASTIC LAMINATE PLYWD PLYWOOD PNT PAINT PTD PAPER TOWEL DISPENSER QT QUARRY TILE RCP REFLECTED CEILING PLAN RD ROOF DRAIN REF REFRIGERATOR REINF REINFORCED REQD REQUIRED RPF STRIP REINFORCED PERIMETER FASTENING STRIP RTU ROOF TOP UNIT (MECH.) RWL RAIN WATER LEADER S.SPLASH SIDESPLASH SACT SUSPENDED ACOUSTICAL CEILING TILE SCHED SCHEDULE SD SOAP DISPENSER SEAL SEALANT SF SQUARE FOOT (FEET) SIM SIMILAR SIP STRUCTURAL INSULATED (OR INSULATING) PANEL SND SANITARY NAPKIN DISPOSAL SPEC SPECIFICATION SS STAINLESS STEEL SSM SOLID SURFACE MATERIAL STL STEEL STRUCT STRUCTURAL CONSULTANT T.O.TOP OF TBB TILE BACKER BOARD TP TOILET PAPER TRTD TREATED TYP TYPICAL UNO UNLESS NOTED OTHERWISE VB VINYL BASE VCT VINYL COMPOSITION TILE VIF VERIFY IN FIELD VWC VINYL WALL COVERING W/WITH W/O WITHOUT WD WOOD ADJ ADJUSTABLE AFF ABOVE FINISHED FLOOR AHU AIR HANDLING UNIT ALT ALTERNATE ALUM ALUMINUM APPROX APPROXIMATE ARCH ARCHITECT B.O.BOTTOM OF B.SPLASH BACKSPLASH BLDG BUILDING BLKG BLOCKING BRG BEARING C-TOP COUNTERTOP CJ CONTROL JOINT CLG CEILING CLR CLEAR CMU CONCRETE MASONRY UNIT COL COLUMN CONC CONCRETE CONT CONTINOUS CPT CARPET CT CERAMIC TILE D DEEP DIA DIAMETER DIM DIMENSION DISP DISPENSER DN DOWN DS DOWNSPOUT DW DISHWASHER EA EACH EIFS EXTERIOR INSULATION & FINISH SYSTEM EJ EXPANSION JOINT ELEC ELECTRICAL EPDM ETHYLENE PROPYLENE DIENE TERPOLYMER ROOFING EQ EQUAL EQUIP / EQPT. EQUIPMENT EXST / EX. / EXIST. EXISTING F.T.FIRE TREATED F.V.FIELD VERIFY FDN FOUNDATION FE FIRE EXTINGUISHER FEC FIRE EXTINGUISHER CABINET FFGB FIBERGLASS FACED GYPSUM BOARD FLR FLOOR FRP FIBERGLASS REINFORCED PANEL FTG FOOTING FUR FURRING GALV GALVANIZED GB GRAB BAR GLAZ GLAZING GYP. BD. / G.BD / GBD GYPSUM BOARD HC HANDICAPPED HM HOLLOW METAL HT HEIGHT ICF INSULATED (OR INSULATING) CONCRETE FORM INSUL INSULATION JST JOIST 1. General Notes apply to all drawing sheets. 2.Review the Construction Documents prior to start of construction. Notify Architect upon encountering any unforeseen conditions, discrepancies, errors, or inconsistencies. 3. Work shall be done in accordance with all rules and regulations of all applicable safety and building codes. The General Contractor is responsible for securing and paying for all permits required and for the scheduling of all required inspections during the course of the project. 4. The General Contractor shall take precautions and be responsible for the safety of all building occupants from construction procedures during construction to minimize disturbances to adjacent spaces and /or structures and their occupants, property, public thoroughfares, etc. Maintain all required exits during construction. 5. All materials and systems shall be installed as per manufacturer's specifications and all construction shall be of industry standard or better. 6. Do not scale drawings. Verify all dimensions in the field for accuracy prior to construction. No extra charge or compensation shall be allowed because of difference between actual dimensions and those indicated on the drawings, unless they contribute to a change in the scope of work. 7. In the event of conflict between data shown on drawings and data shown in the Specification, the Work of greater quality or quantity shall be provided, in accordance with the Architect's interpretation, and no change in the Contract Sum will be permitted. Detail drawings take precedent over drawings of larger scope. Notify Architect if at any time an error or discrepancy is discovered. 8. Immediately notify Architect of any long lead items that will affect the completion date . 9. All wood in contact with concrete or concrete block to be pressure treated - typical. 10. Provide metal backing and / or treated wood blocking for all wall mounted equipment (grab bars, toilet room accessories, TV mounts, headwalls, equipment rails, etc.) Verify height and length with actual equipment. 11. Patch all disturbed fireproofing as required to maintain rating. Repair and install all fireproofing as required by code. Fireproof any new penetrations required by the work. Refer to code summary for ratings. êÉîáëáçå=L áëëìÉ åçK Ç~íÉ 1 West Perspective 2 East Perspective Level 1 100'-0" Roof 139'-0" 1 Level 2 113'-0" Level 3 126'-0" 2 3 54 40'-0"PREFINISHED PARAPET CAP FLASHING PRECAST ACCENT COLOR C PRECAST ACCENT COLOR D ALUMINUM GLAZING SYSTEM COLOR B METAL PANEL CLADDING SYSTEM ALUMINUM GLAZING SYSTEM COLOR A ACCENT TINTED GLAZING PANELS Level 1 100'-0" Roof 139'-0" A Level 2 113'-0" Level 3 126'-0" CDE B 21'-6" 28'-0" 41'-0" 15'-6" PREFINISHED PARAPET CAP FLASHING PRECAST ACCENT BAND COLOR A PRECAST PANEL INTEGRAL COLOR B PRECAST ACCENT BAND COLOR C PRECAST ACCENT COLOR D PREFINISHED FASCIA AND SOFFIT PANEL METAL PANEL CLADDING SYSTEM ALUMINUM GLAZING SYSTEM COLOR A BUILDING MOUNTED SIGNAGE ALUMINUM ENTRY SYSTEM COLOR B GLAZED UNIT MASONRY Level 1 100'-0" Level 1 100'-0" Roof 139'-0" Roof 139'-0" 1 Level 2 113'-0" Level 2 113'-0" Level 3 126'-0" Level 3 126'-0" 2354 28'-0"15'-6"Level 1 100'-0" Roof 139'-0" A Level 2 113'-0" Level 3 126'-0" C D EB 23'-6" 28'-0" 41'-0" Glazing Percentages WEST ELEVATION WALL AREA:2,624 S.F. GLAZING AREA:951 S.F. GLAZING PERCENTAGE:36.2% SOUTH ELEVATION WALL AREA:1,091 S.F. GLAZING AREA:384 S.F. GLAZING PERCENTAGE:35.2% EAST ELEVATION WALL AREA:2,624 S.F. GLAZING AREA:710 S.F. GLAZING PERCENTAGE:27.1% NORTH ELEVATION WALL AREA:1,091 S.F. GLAZING AREA:62 S.F. GLAZING PERCENTAGE 5.7% TOTAL WALL AREA:7,430 S.F. GLAZING AREA:2,107 S.F. GLAZING PERCENTAGE:28.4% NOTE: GLAZING PERCENTAGES TAKEN FROM 2'-0" TO 10'-0" ABOVE FINISHED FLOOR ÉåêáÅÜáåÖ ÅçããìåáíáÉë íÜêçìÖÜ ~êÅÜáíÉÅíìêÉ ÇìäìíÜ=G=îáêÖáåá~G=íïáå=ÅáíáÉë ïïïKÇëÖïKÅçã Çê~ïå=ÄóW ÅÜÉÅâÉÇ=ÄóW íóéÉÇLéêáåíÉÇ= å~ãÉW êÉÖK=@W ëáÖå=Ç~íÉW Ç~íÉW éêçàÉÅí=@W ëáÖå~íìêÉW f=ÜÉêÉÄó=ÅÉêíáÑó=íÜ~í=íÜáë=éä~åI= ëéÉÅáÑáÅ~íáçåI=çê=êÉéçêí=ï~ë= éêÉé~êÉÇ=Äó=ãÉ=çê=ìåÇÉê=ãó=ÇáêÉÅí= ëìéÉêîáëáçå=~åÇ=íÜ~í=f=~ã=~=Çìäó= iáÅÉåëÉÇ=^êÅÜáíÉÅí=ìåÇÉê=íÜÉ=ä~ïë= çÑ=íÜÉ=ëí~íÉ=çÑ=jáååÉëçí~K Randy Wagner 21068 ëÜÉÉí=íáíäÉW ëÜÉÉí= åìãÄÉêW 8/7/2019 9:07:23 AM 019062.00 Author Checker Issue Date Prodeo Academy 4141 University Ave NE Columbia Heights, MN 55421 A5.1 Exterior Elevations 3/32" = 1'-0" 2 South Elevation 3/32" = 1'-0" 1 West Elevation 3/32" = 1'-0" 3 North Elevation 3/32" = 1'-0" 4 East Elevation êÉîáëáçå=L áëëìÉ åçK Ç~íÉ ÉåêáÅÜáåÖ ÅçããìåáíáÉë íÜêçìÖÜ ~êÅÜáíÉÅíìêÉ ÇìäìíÜ=G=îáêÖáåá~G=íïáå=ÅáíáÉë ïïïKÇëÖïKÅçã Çê~ïå=ÄóW ÅÜÉÅâÉÇ=ÄóW íóéÉÇLéêáåíÉÇ= å~ãÉW êÉÖK=@W ëáÖå=Ç~íÉW Ç~íÉW éêçàÉÅí=@W ëáÖå~íìêÉW f=ÜÉêÉÄó=ÅÉêíáÑó=íÜ~í=íÜáë=éä~åI= ëéÉÅáÑáÅ~íáçåI=çê=êÉéçêí=ï~ë= éêÉé~êÉÇ=Äó=ãÉ=çê=ìåÇÉê=ãó=ÇáêÉÅí= ëìéÉêîáëáçå=~åÇ=íÜ~í=f=~ã=~=Çìäó= iáÅÉåëÉÇ=^êÅÜáíÉÅí=ìåÇÉê=íÜÉ=ä~ïë= çÑ=íÜÉ=ëí~íÉ=çÑ=jáååÉëçí~K Randy Wagner 21068 ëÜÉÉí=íáíäÉW ëÜÉÉí= åìãÄÉêW 8/6/2019 1:56:16 PM 019062.00 Author Checker Issue Date Prodeo Academy 4141 University Ave NE Columbia Heights, MN 55421 LA1.0 LANDSCAPE PLAN 1" = 30'-0" 1 Landscape Plan PLANTING NOTES Contractor shall verify locations with all utililies prior to installation of plants. Contractor shall provide one year guarantee of all plant materials. The guarantee begins on the date of the Owner’s final acceptance of the initial plantings. Replacement plant materials shall also have a one year guarantee commencing upon date of replacement planting. All plants to be northern—grown and hardy. Plants to be installed as per standard AAN planting practices. Use minimum 12" loam planting soil on trees and 6" on shrubs (sides and bottom). An in-ground irrigation system will be provided for the landscaped areas at the front of the building as required by the City. Staking of trees required; reposition if not plumb after one year. Wrap all smooth—barked trees—fasten top and bottom. Remove by April 1. Open top of burlap on BB materials; remove pot on potted plants; split and break apart peat pots. Prune plants as necessary — per standard nursery practice. Owner shall be responsible for maintenance after acceptance of the work by the Owner. Plants shall be immediately planted upon arrival at site. Properly heel—in materials if necessary, temporarily. All disturbed areas to be seeded unless otherwise noted. Planting beds for shrubs shall have (4 oz. min.) weed barrier fabric, 5" of double shredded hardwood mulch and 4" tall commercial grade black edging. All wood mulch shall be double shredded dark brown hardwood mulch free of soil and debris. Wood mulch shall be used around all trees, in parking lot islands, and shrub beds. Metal landscape edging to be provided along edge of all planting beds as indicated on drawings. Avoid weed barrier around perennials and ornamental grasses. A preeminent weed inhibitor such as Preen shall be used in all planting beds. All boulders with no dimension less than 18" found on site during excavaton to be stockpiled for reuse. LANDSCAPE REQUIREMENTS 1246/50 = 25 overstory, coniferous, or existing trees. Existing overstory trees = 3 as indicated on landscape plan Provided new trees =37 Required Trees 1:50' of lot perimeter 2acres : 4 = 8 overstory or coniferous. Provided new overstory 50% = 4 Provided new coniferous 50% = 4 Required Trees 4:1 acre of lot coverage 67/20 = 4 overstory or coniferous. Provided new overstory 50% = 2 Provided new coniferous 50% = 2 Required Trees 1:20 per parking stall Overstory Deciduous = 18 Coniferous = 13 (32% of Total) Decidous Ornamental = 6 Trees Provided êÉîáëáçå=L áëëìÉ åçK Ç~íÉ Prodeo Academy Future Building Site Existing Conditions Exhibit South West Site Perspective North West Site Perspective South East Site Perspective North East Site Perspective Total Building Perimeter - 1,037ft Building Perimeter Fronting Public Way- 754ft Building Perimeter Requiring Variance - 416ft 86'-6" 86'-6"82'-6"78'-0"64'-3" 110'-3" 46'-0" 63'-0" T.O.W. 28'-0" T.O.W. 18'-0" T.O.W. 41'-0" 107'-0"4th Street University Ave Service Road 42nd Av e N E 42nd A v e N E Universit y A v e S er vi c e R o a d 4th Str e et Building Height Variance Exhibit North East Axonometric View South West Axonometric View Building Material Sample Photos Metal Wall PanelAluminum Curtain Wall Aluminum Storefront Window Integral Colored Architectural Precast Wall Painted Architectural Precast Wall Glazed Block Exterior Rendering - Entry View Exterior Rendering - Approach View Exterior Rendering - West Facade GLAZED BLOCK INTEGRAL COLORED ARCHITECTURAL PRECAST WALL PAINTED ARCHITECTURAL PRECAST WALL METAL WALL PANEL ALUMINUM CURTAIN WALL ALUMINUM STOREFRONT WINDOW Exterior Rendering - Courtyard View PO Box 16269, St. Louis Park, MN 55416 888.232.5512 www.SpackConsulting.com Transportation Management Plan To: Rick Campion, Executive Director, Prodeo Academy From: Max Moreland, PE, PTOE Date: August 5, 2019 Re: Prodeo Academy Transportation Management Plan Spack Consulting has been contracted to complete a Transportation Management Plan for Prodeo Academy; a proposed K-8 Charter School at 4141 University Avenue Northeast in Columbia Heights, Minnesota. This Transportation Management Plan addresses: • Off street parking • Student loading and unloading, including buses • Traffic control • The impact of the facility on the surrounding roadways Conclusions Based on the analyses in this Transportation Management Plan, traffic generated by the Prodeo Academy will be adequately accommodated if the following measures are implemented: • Painting the bus loading areas onto the pavement of the western parking lot. • Utilizing barriers in the morning student unloading period to block the entry to the school from 4 th Street and reduce the entry on University Service Road to one lane. • Utilizing faculty to assist the loading/unloading of students in the following areas (at a minimum): o Along the sidewalk in the morning period to direct vehicles to efficiently use the space in the unloading zone. o At either end of the bus laoding areas in the afternoon to keep any students from walking out beyond the buses. o At the University Service Road access in the afternoon to direct parent vehicles to stop allowing buses to enter. o At the north end of the sidewalk in the afternoon guiding students and parent vehicles loading there. o At the north end of the parent vehicle queue in the afternoon to direct vehicles to stop when buses are departing and to go when there is space to load. • Providing detailed instructions for the parent drop-off/pick-up procedure on the school website and in a separate communication at the beginning of each school year and for all new students. • Buses exiting the site will travel north or south along 4th Street to reach either 44th Avenue or 40th Avenue. The buses that are going north will not exit the site and get to 44th Avenue via University Service Road. Background The proposed site is currently occupied by a church building with two surface parking lots adjacent to the building. The proposed development will include a 71,934 square foot school building on a 35,358 square foot building footprint with two site accesses on 4th Street and one on University Service Road. The northern access on 4th Street will be enter only and the southern access will be exit only. A total of 67 parking stalls Spack Consulting 2 Prodeo Academy Transportation Management Plan are planned for the site, including three ADA compliant stalls. Based on information provided by Prodeo Academy, the expected number of students and faculty for the new development at full capacity are: • Students: 910 students (90% are expected to utilize bus transportation, 9% are expected to be picked up/dropped off, and 1% are expected to walk to and from the school). • 90 faculty members (90% are expected to drive to/from the site). Forecast Traffic and Parking Generation Trip and parking generation forecasts were calculated for the proposed Charter School based on the uses detailed above. The calculated values are: • 240 vehicles in and 240 vehicles out per weekday. • 155 vehicles in and 75 vehicles out per weekday a.m. peak hour (accounting for approximately 80 staff vehicles entering, 15 buses dropping off and 60 parent drop-off vehicles). • 75 vehicles in and 155 vehicles out per weekday p.m. peak hour (accounting for approximately 80 staff vehicles exiting, 15 buses picking up and 60 parent pick-up vehicles). • A peak parking demand of approximately 90 vehicles expected to occur on a typical weekday morning accommodated in the on-site surface lot. This accounts for the approximately 80 staff vehicles plus 10 visitor vehicles. Table 1 presents the trip generation for both the current and former land use plans for the site. Trip generation for the existing use is based on the methods and rates from the Institute of Transportation Engineers (ITE) Trip Generation Manual, 10th Edition. Table 1 – Raw Trip Generation Comparison Scenario Description (source) Daily Trips AM Peak Hour PM Peak Hour Entering Exiting Entering Exiting Entering Exiting Current Land Use Church – 17 KSF (ITE-560) 59 59 3 2 4 5 Proposed Land Use Charter School – 32.8 KSF (School Provided) 240 240 155 75 75 155 Change in Site Trips 181 181 152 73 71 150 As shown in Table 1, with the change of land use, weekday increases of 362 new daily trips, 225 new trips in the a.m. peak hour, and 211 new trips in the p.m. peak hour are expected. As mentioned previously, a peak parking demand of approximately 90 vehicles is expected to occur on a typical weekday morning. Based on the attached site plan, 67 parking stalls are proposed to be included on- site. With the presumed parking deficit, approximately 23 staff and visitors will be required to find parking off-site. Approximately 16 vehicles will be able to park on the west side of 4 th Street adjacent to the school building. No vehicles should park along 42nd Avenue adjacent to the site as that road is only about 20 feet wide. No parking is allowed on University Service Road. Therefore, the remaining seven or so vehicles wishing to park off-street will need to do so either on the east side of 4th Street in front of the site or elsewhere further along 4th Street or 42nd Avenue where there is available on-street parking. Student Unloading – AM Operations The proposed parking lot along the west side of the building will serve as the student loading/unloading zone. Vehicles unloading students in the morning will enter the lot on University Service Road, circulate Spack Consulting 3 Prodeo Academy Transportation Management Plan through the site and exit onto 4th Street. One-way vehicle operations will be in effect for unloading vehicles during this period as all students will be dropped off curbside without needing to walk through any moving vehicles. The northern access on 4th Street will be temporarily closed during the morning drop-off period to ensure all vehicles are heading one-way through the lot. Within the site, the sidewalk on the eastern side of the drive aisle will provide direct access for students to get on and off the buses while being in a protected pedestrian zone. The school anticipates having 1 4 full sized school buses to accommodate the 910 students. It is anticipated approximately 30 parent vehicles will drop off children in the morning and pick them up in the afternoon. All drop-offs will occur curbside as vehicles arrive. That means buses and cars will be mixed in the drop-off lane. The site access on University Service Road will be temporarily blocked to only allow one entering lane of traffic. That will prohibit weaving of vehicles to and from the curb. Staff from the school will be present during the drop-off period to vehicles are safely travelling through the area and efficiently utilizing the curb space to limit queue lengths. Bus arrivals are anticipated to be spread throughout at 10 to 20 minute period with parent vehicles spread across a 30 minute period. Student Loading – PM Operations The attached site plan shows the configuration during the afternoon pick-up period. A crossing area will be marked on the pavement on the west side of the school. Buses will park around and adjacent to this marked crossing area. There will be two rows of buses and one row of parent vehicles, all moving one-way through the lot entering on University Service Road and exiting to 4th Street. Once all buses are in place they will turn off their engines and staff will direct students to load onto their buses. Staff members will be placed at the south and north ends of the bus queue to ensure no students walk beyond the edge of the buses. Parent vehicles will travel through the lot to the west of the buses. Loading for these vehicles will occur on the northern end of the western parking area as shown in the attached site plan. Approximately two vehicles will be able to load at one time. Staff will be present at this location to ensure safe and efficient student loading. To prevent parent vehicle queues from blocking bus entry to the site, a staff member will be located at the University Service Road site access directing traffic to enter the lot. This staff member will also ensure parents and buses utilize the correct lanes. Parent vehicles will likely need to travel down along University Service Road and turn around in the cul-de-sac to enter the site from the south. When buses then arrive, the northbound queue of parent vehicles will be stopped and buses can enter from the north on University Service Road. Once the buses are loaded with students, a staff member will stop the parent vehicle line and buses will depart. Once all buses are gone, parent pick-up will resume. No student loading will occur when buses are moving and all students going into passenger vehicles will be loaded curbside. All vehicles loading or unloading curbside will be doing so efficiently without any parents leaving their vehicles to see students into/out of the school. Several of the visitor parking spaces in the northeastern lot can be dedicated and signed for drop-off/pick-up only spaces during those times for parents of small children who wish to walk their child into/out of the school. Vehicles will be unable to enter or exit spaces in the western parking area during the student loading period. To keep operations orderly around the site, expectations will need to be set for parents that all pick-ups will need to occur in the designated pick-up area on school property. Circulation plans should be detailed on the school website and in a separate school communication to make sure everyone is following these procedures and not conducting pick-ups at other locations around the site. Spack Consulting 4 Prodeo Academy Transportation Management Plan Traffic Control School staff will be placed on the west side of the school to guide students in and out of buses and parent vehicles to facilitate smooth and efficient operations during the loading/unloading process. Stop signs should be placed at the site exit points. Impacts to Surrounding Roads Traffic from the Charter School is expected to largely be oriented to and from University Service Road and 4th Street. The 4th Street/42nd Avenue intersection adjacent to the school is all-way stop controlled, while the University Service Road/42nd Avenue intersection is under side street stop control. Dedicated turn lanes into the site are not proposed to be provided. Two blocks north of the site, University Service Road intersects with 44th Avenue. That intersection is spaced only about 25 feet east of the signalized University Avenue/44th Avenue intersection. Because of the challenge of turning off University Service Road and onto University Avenue at this location, it is recommended that all bus traffic exiting the school and heading to that intersection use 4th Street to get to 44th Avenue rather than using University Service Road. Buses headed to/from the south on University Avenue will likely access 4th Street south of the site via 40th Avenue. Bus traffic is anticipated to be split between the north and the south so no one neighborhood will experience all bus traffic from this school. A site visit was conducted during the a.m. peak hour to see if there were significant queuing issues adjacent to the site. Although a full capacity analysis was not done of the adjacent intersections, queuing was observed to be minimal along the roads adjacent to the site without backups to the site access points. The addition of the school’s traffic is not expected to trigger the need for the addition of turn lanes or the escalation of traffic control. Very low volumes were observed on University Service Road adjacent to the site during the site visit. South of the site, University Service Road serves several single-family homes, a home daycare and acts as a secondary access to a commercial building before ending in a cul-de-sac. Parent vehicles are anticipated to temporarily stack on northbound University Service Road while waiting to get into the school site during pick-up periods. Due to the low volumes/limited access points of this roadway, few conflicts are anticipated with that layout. Buses will travel southbound on University Service Road to enter the site and then circulate through the site to exit onto 4th Street. Turning radii for school buses entering and exiting the site were analyzed. From the auto-turn analysis, buses are able to sufficiently circulate through the site. Buses exiting the site onto 4th Street and heading north are able to make that turn, however if there are vehicles parked on the east side of 4th Street adjacent to the southern site access, buses will need to exit to the south rather than turning left to go north due to a lack of space. Appendix A. Site Plan Transportation Management Plan Prodeo Academy A1 Spack Consulting Appendix A - Site Plan Rehder & Associates, Inc. Civil Engineers, Planners & Land Surveyors 3440 Federal Drive, Suite 110 • Eagan, Minnesota 55122 • 651-452-5051 • Fax: 651-452-9797 • Email: info@rehder.com STORM WATER MANAGEMENT REPORT FOR PRODEO ACADEMY 8-7-19 I hereby certify that this plan, specification or report was prepared by me or under my direct supervision and that I am a duly licensed Professional Engineer under the laws of the State of Minnesota. Report Prepared By: Nicholas P. Adam, P.E. Registration Number: 43856 Report Reviewed By: Benton G. Ford, P.E. Registration Number: 24392 Rehder & Associates, Inc. Civil Engineers, Planners & Land Surveyors 3440 Federal Drive, Suite 110 • Eagan, Minnesota 55122 • 651-452-5051 • Fax: 651-452-9797 • Email: info@rehder.com STORM WATER NARRATIVE Prodeo Academy Columbia Heights, Minnesota Project Summary The proposed projecet is the redevelopment of the Oak Hill Baptist Church site at 4141 University Ave NE in Columbia, MN. The total site area is 3.02 acres. The plan is for the existing building and most of the associated site improvements to be removed for the construction of a new charter school. The redevelopment of the site results in a net decrease in impervious area of approximately 0.15 acres. Existing Conditions The existing site consists of an existing building, bituminous parking lots, and walks. Runoff from a majority of the site (2.72-acres) drains to the northwest and into University Ave Service Road where it eventually drains into the City’s storm sewer system. The remaining area (0.30- acres) drains to the east and northeast and into 4th Street where it eventually drains into the City’s storm sewer system at the corner of 4th Street and 42nd Avenue NE. There is currently no rate control, volume control or water quality being provided on the site. Proposed Conditions Per the City of Columbia Heights and the Mississippi WMO storm water management requirements, the proposed development must limit the runoff rates for the 2-, 10-, and 100-yr events to the existing conditions and allow no net increase in Total Suspended Solids (TSS) and Total Phosphorus (TP) compared to existing. In addition, volume control for the 1.1-inch event off of the new impervious surfaces must be provided. The proposed development will reduce the impervious area on the site from 1.95-acres in the existing conditions to 1.83-acres in the proposed conditions. Given the proposed reduction in impervious surface area, which is a low impact development technique, the proposed project will reduce the runoff rates and, therefore, there will be no net increase in TSS and TP without the need for a structural BMP. However, to meet the volume control requirement, a subsurface infiltration basin is being proposed to infiltrate the 1.1-inch event off of the proposed impervious areas. Pre-treatment for the subsurface basin will be provided by incorporating sumps in the structures prior to discharge into the subsurface basin. In addition, a StormTech (or approved equal) isolator row is being proposed to provide additional pre- treatment and ease of maintenance. By:Date: 3440 Federal Drive, Suite 110 · Eagan, Minnesota 55122 Checked by:Date: 651-452-5051 · Fax: 651-452-9797 · Email: info@rehder.com Project No:Sheet of Subject: REQUIRED VOLUME: 1.83 Acres = 1.10 X 1.83 ac =ac-ft 12in./ft =cu.ft. VOLUME PROVIDED: Rehder & Associates, Inc.WORKSHEET (SEE ATTACHED HYDROCAD WORKSHEET) 7307 VOLUME CONTROL SIZING CALCULATIONS Civil Engineers, Planners & Land Surveyors 0.168 Proposed Impervious Area = MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: SUBSURFACE INFILT. BASIN Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 917.60 11,713 0 917.70 11,713 469 917.80 11,713 937 917.90 11,713 1,406 918.00 11,713 1,874 918.10 11,713 2,343 918.20 11,713 2,848 918.30 11,713 3,354 918.40 11,713 3,858 918.50 11,713 4,361 918.60 11,713 4,863 918.70 11,713 5,363 918.80 11,713 5,862 918.90 11,713 6,358 919.00 11,713 6,852 919.10 11,713 7,343 919.20 11,713 7,407 919.30 11,713 7,465 919.40 11,713 7,520 919.50 11,713 7,572 919.60 11,713 7,624 919.70 11,713 7,676 919.80 11,713 7,728 919.90 11,713 7,780 920.00 11,713 7,800 920.10 11,713 7,805 920.20 11,713 7,810 920.30 11,713 7,814 920.40 11,713 7,819 920.50 11,713 7,823 920.60 11,713 7,828 920.70 11,713 7,833 920.80 11,713 7,837 920.90 11,713 7,842 921.00 11,713 7,846 921.10 11,713 7,851 921.20 11,713 7,856 921.30 11,713 7,860 921.40 11,713 7,865 921.50 11,713 7,871 921.60 11,713 7,879 921.70 11,713 7,890 921.80 11,713 7,904 921.90 11,713 7,923 922.00 11,713 7,946 922.10 11,713 7,949 922.20 11,713 7,953 922.30 11,713 7,956 922.40 11,713 7,960 922.50 11,713 7,963 922.60 11,713 7,966 922.70 11,713 7,970 922.80 11,713 7,973 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 922.90 11,713 7,976 923.00 11,713 7,980 923.10 11,713 7,983 923.20 11,713 7,986 923.30 11,713 7,990 923.40 11,713 7,993 923.50 11,713 7,996 923.60 11,713 8,000 923.70 11,713 8,003 923.80 11,713 8,006 923.90 11,713 8,010 924.00 11,713 8,013 924.10 11,713 8,016 924.20 11,713 8,020 924.30 11,713 8,022 924.40 11,713 8,025 924.50 11,713 8,028 924.60 11,713 8,030 924.70 11,713 8,032 924.80 11,713 8,033 924.90 11,713 8,035 925.00 11,713 8,036 925.10 11,713 8,037 925.20 11,713 8,039 925.30 11,713 8,040 925.40 11,713 8,041 925.50 11,713 8,042 STORM EVENT EXISTING RATE OFFSITE PROPOSED RATE OFFSITE CFS CFS 2-YR 5.2 1.3 10-YR 9.4 9.4 100-YR 19.2 19.2 STORM EVENT EXISTING RATE OFFSITE PROPOSED RATE OFFSITE CFS CFS 2-YR 0.7 0.0 10-YR 1.4 0.1 100-YR 2.9 0.2 RATE CONTROL SUMMARY RUNOFF TO THE NORTHWEST (UNIVERSITY AVE SERVICE ROAD) RUNOFF TO THE NORTHEAST (4TH STREET) STORM EVENT EXISTING VOLUME OFFSITE PROPOSED VOLUMETE AC-FT AC-FT 2-YR 0.33 0.10 10-YR 0.61 0.37 100-YR 1.27 1.05 STORM EVENT EXISTING VOLUME OFFSITE PROPOSED VOLUMETE AC-FT AC-FT 2-YR 0.03 0.001 10-YR 0.06 0.002 100-YR 0.13 0.007 VOLUME CONTROL SUMMARY RUNOFF TO THE NORTHWEST (UNIVERSITY AVE SERVICE ROAD) RUNOFF TO THE NORTHEAST (4TH STREET) 1P SUBSURFACE INFILT. BASIN1R PROP. TO UNIVERSITY AVE 1S EX. TO UNIVERSITY AVE 2S EX. TO 4TH ST 3S DIRECT TO UNIVERSITY AVE 4S PROP. TO BASIN 5S PROP. TO 4TH ST Routing Diagram for 1989022_Prodeo Prepared by Rehder & Associates, Inc., Printed 8/5/2019 HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Subcat Reach Pond Link MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Peak Elev=919.66' Storage=7,657 cf Inflow=5.13 cfs 0.328 afPond 1P: SUBSURFACE INFILT. BASIN Discarded=0.11 cfs 0.257 af Primary=1.16 cfs 0.071 af Secondary=0.00 cfs 0.000 af Outflow=1.27 cfs 0.328 af Inflow=1.23 cfs 0.095 afReach 1R: PROP. TO UNIVERSITY AVE Outflow=1.23 cfs 0.095 af Runoff Area=2.720 ac 65.44% Impervious Runoff Depth=1.45"Subcatchment 1S: EX. TO UNIVERSITY AVE Tc=15.0 min CN=85 Runoff=5.15 cfs 0.330 af Runoff Area=0.300 ac 56.67% Impervious Runoff Depth=1.25"Subcatchment 2S: EX. TO 4TH ST Tc=5.0 min CN=82 Runoff=0.74 cfs 0.031 af Runoff Area=0.530 ac 18.87% Impervious Runoff Depth=0.55"Subcatchment 3S: DIRECT TO UNIVERSITY Tc=4.0 min CN=68 Runoff=0.55 cfs 0.024 af Runoff Area=2.460 ac 70.33% Impervious Runoff Depth=1.60"Subcatchment 4S: PROP. TO BASIN Tc=15.0 min CN=87 Runoff=5.13 cfs 0.328 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.31"Subcatchment 5S: PROP. TO 4TH ST Tc=3.0 min CN=61 Runoff=0.01 cfs 0.001 af MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Summary for Pond 1P: SUBSURFACE INFILT. BASIN Inflow Area = 2.460 ac, 70.33% Impervious, Inflow Depth = 1.60" for 2-Year event Inflow = 5.13 cfs @ 12.23 hrs, Volume= 0.328 af Outflow = 1.27 cfs @ 12.64 hrs, Volume= 0.328 af, Atten= 75%, Lag= 24.6 min Discarded = 0.11 cfs @ 11.55 hrs, Volume= 0.257 af Primary = 1.16 cfs @ 12.64 hrs, Volume= 0.071 af Secondary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 919.66' @ 12.64 hrs Surf.Area= 11,713 sf Storage= 7,657 cf Plug-Flow detention time= 557.0 min calculated for 0.328 af (100% of inflow) Center-of-Mass det. time= 557.1 min ( 1,366.5 - 809.4 ) Volume Invert Avail.Storage Storage Description #1 917.60' 6,316 cf 43.50'W x 242.00'L x 1.50'H Prismatoid 15,791 cf Overall x 40.0% Voids #2 918.10' 93 cf 4.00'D x 7.40'H CB 1 -Impervious #3 918.10'40 cf 4.00'D x 3.20'H CB 2 -Impervious #4A 917.60'906 cf 4.83'W x 245.28'L x 2.33'H Field A 2,766 cf Overall - 501 cf Embedded = 2,265 cf x 40.0% Voids #5A 918.10'501 cf ADS_StormTech SC-310 +Cap x 34 Inside #4 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap #6 921.30'62 cf Custom Stage Data (Irregular) Listed below (Recalc) -Impervious #7 918.10'123 cf 12.0" Round Pipe Storage -Impervious L= 157.0' S= 0.0376 '/' 8,042 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet)(sq-ft) (feet) (cubic-feet) (cubic-feet)(sq-ft) 921.30 6 10.0 0 0 6 922.00 225 60.0 62 62 286 Device Routing Invert Outlet Devices #1 Primary 919.10'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 919.10' / 909.00' S= 0.2463 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Discarded 917.60'0.400 in/hr Exfiltration over Surface area #3 Secondary 921.30'24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 3 918.10'15.0" Vert. Orifice/Grate C= 0.600 MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.11 cfs @ 11.55 hrs HW=917.68' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=1.16 cfs @ 12.64 hrs HW=919.66' (Free Discharge) 1=Culvert (Inlet Controls 1.16 cfs @ 2.55 fps) Secondary OutFlow Max=0.00 cfs @ 0.00 hrs HW=917.60' (Free Discharge) 3=Orifice/Grate ( Controls 0.00 cfs) 4=Orifice/Grate ( Controls 0.00 cfs) Summary for Reach 1R: PROP. TO UNIVERSITY AVE Inflow Area = 2.990 ac, 61.20% Impervious, Inflow Depth = 0.38" for 2-Year event Inflow = 1.23 cfs @ 12.64 hrs, Volume= 0.095 af Outflow = 1.23 cfs @ 12.64 hrs, Volume= 0.095 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Summary for Subcatchment 1S: EX. TO UNIVERSITY AVE Runoff = 5.15 cfs @ 12.23 hrs, Volume= 0.330 af, Depth= 1.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (ac) CN Description * 1.780 98 IMPERVIOUS 0.940 61 >75% Grass cover, Good, HSG B 2.720 85 Weighted Average 0.940 34.56% Pervious Area 1.780 65.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 2S: EX. TO 4TH ST Runoff = 0.74 cfs @ 12.13 hrs, Volume= 0.031 af, Depth= 1.25" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (ac) CN Description * 0.170 98 IMPERVIOUS 0.130 61 >75% Grass cover, Good, HSG B 0.300 82 Weighted Average 0.130 43.33% Pervious Area 0.170 56.67% Impervious Area MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 3S: DIRECT TO UNIVERSITY AVE Runoff = 0.55 cfs @ 12.12 hrs, Volume= 0.024 af, Depth= 0.55" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (ac) CN Description * 0.100 98 IMPERVIOUS 0.430 61 >75% Grass cover, Good, HSG B 0.530 68 Weighted Average 0.430 81.13% Pervious Area 0.100 18.87% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Summary for Subcatchment 4S: PROP. TO BASIN Runoff = 5.13 cfs @ 12.23 hrs, Volume= 0.328 af, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" Area (ac) CN Description * 1.730 98 IMPERVIOUS 0.730 61 >75% Grass cover, Good, HSG B 2.460 87 Weighted Average 0.730 29.67% Pervious Area 1.730 70.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 5S: PROP. TO 4TH ST Runoff = 0.01 cfs @ 12.12 hrs, Volume= 0.001 af, Depth= 0.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 2-Year Rainfall=2.84" MSE 24-hr 3 2-Year Rainfall=2.84"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Area (ac) CN Description * 0.000 98 IMPERVIOUS 0.030 61 >75% Grass cover, Good, HSG B 0.030 61 Weighted Average 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, MSE 24-hr 3 10-Year Rainfall=4.25"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Peak Elev=921.66' Storage=7,885 cf Inflow=9.07 cfs 0.588 afPond 1P: SUBSURFACE INFILT. BASIN Discarded=0.11 cfs 0.282 af Primary=5.43 cfs 0.277 af Secondary=3.56 cfs 0.029 af Outflow=9.10 cfs 0.588 af Inflow=9.51 cfs 0.366 afReach 1R: PROP. TO UNIVERSITY AVE Outflow=9.51 cfs 0.366 af Runoff Area=2.720 ac 65.44% Impervious Runoff Depth=2.68"Subcatchment 1S: EX. TO UNIVERSITY AVE Tc=15.0 min CN=85 Runoff=9.44 cfs 0.608 af Runoff Area=0.300 ac 56.67% Impervious Runoff Depth=2.42"Subcatchment 2S: EX. TO 4TH ST Tc=5.0 min CN=82 Runoff=1.40 cfs 0.060 af Runoff Area=0.530 ac 18.87% Impervious Runoff Depth=1.37"Subcatchment 3S: DIRECT TO UNIVERSITY Tc=4.0 min CN=68 Runoff=1.48 cfs 0.060 af Runoff Area=2.460 ac 70.33% Impervious Runoff Depth=2.87"Subcatchment 4S: PROP. TO BASIN Tc=15.0 min CN=87 Runoff=9.07 cfs 0.588 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=0.94"Subcatchment 5S: PROP. TO 4TH ST Tc=3.0 min CN=61 Runoff=0.06 cfs 0.002 af MSE 24-hr 3 10-Year Rainfall=4.25"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Summary for Pond 1P: SUBSURFACE INFILT. BASIN Inflow Area = 2.460 ac, 70.33% Impervious, Inflow Depth = 2.87" for 10-Year event Inflow = 9.07 cfs @ 12.23 hrs, Volume= 0.588 af Outflow = 9.10 cfs @ 12.24 hrs, Volume= 0.588 af, Atten= 0%, Lag= 0.7 min Discarded = 0.11 cfs @ 10.85 hrs, Volume= 0.282 af Primary = 5.43 cfs @ 12.24 hrs, Volume= 0.277 af Secondary = 3.56 cfs @ 12.24 hrs, Volume= 0.029 af Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 921.66' @ 12.24 hrs Surf.Area= 11,713 sf Storage= 7,885 cf Plug-Flow detention time= 347.8 min calculated for 0.588 af (100% of inflow) Center-of-Mass det. time= 348.5 min ( 1,146.2 - 797.7 ) Volume Invert Avail.Storage Storage Description #1 917.60' 6,316 cf 43.50'W x 242.00'L x 1.50'H Prismatoid 15,791 cf Overall x 40.0% Voids #2 918.10' 93 cf 4.00'D x 7.40'H CB 1 -Impervious #3 918.10'40 cf 4.00'D x 3.20'H CB 2 -Impervious #4A 917.60'906 cf 4.83'W x 245.28'L x 2.33'H Field A 2,766 cf Overall - 501 cf Embedded = 2,265 cf x 40.0% Voids #5A 918.10'501 cf ADS_StormTech SC-310 +Cap x 34 Inside #4 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap #6 921.30'62 cf Custom Stage Data (Irregular) Listed below (Recalc) -Impervious #7 918.10'123 cf 12.0" Round Pipe Storage -Impervious L= 157.0' S= 0.0376 '/' 8,042 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet)(sq-ft) (feet) (cubic-feet) (cubic-feet)(sq-ft) 921.30 6 10.0 0 0 6 922.00 225 60.0 62 62 286 Device Routing Invert Outlet Devices #1 Primary 919.10'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 919.10' / 909.00' S= 0.2463 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Discarded 917.60'0.400 in/hr Exfiltration over Surface area #3 Secondary 921.30'24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 3 918.10'15.0" Vert. Orifice/Grate C= 0.600 MSE 24-hr 3 10-Year Rainfall=4.25"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.11 cfs @ 10.85 hrs HW=917.68' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=5.43 cfs @ 12.24 hrs HW=921.66' (Free Discharge) 1=Culvert (Inlet Controls 5.43 cfs @ 6.92 fps) Secondary OutFlow Max=3.56 cfs @ 12.24 hrs HW=921.66' (Free Discharge) 3=Orifice/Grate (Passes 3.56 cfs of 7.15 cfs potential flow) 4=Orifice/Grate (Orifice Controls 3.56 cfs @ 2.90 fps) Summary for Reach 1R: PROP. TO UNIVERSITY AVE Inflow Area = 2.990 ac, 61.20% Impervious, Inflow Depth = 1.47" for 10-Year event Inflow = 9.51 cfs @ 12.24 hrs, Volume= 0.366 af Outflow = 9.51 cfs @ 12.24 hrs, Volume= 0.366 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Summary for Subcatchment 1S: EX. TO UNIVERSITY AVE Runoff = 9.44 cfs @ 12.23 hrs, Volume= 0.608 af, Depth= 2.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.25" Area (ac) CN Description * 1.780 98 IMPERVIOUS 0.940 61 >75% Grass cover, Good, HSG B 2.720 85 Weighted Average 0.940 34.56% Pervious Area 1.780 65.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 2S: EX. TO 4TH ST Runoff = 1.40 cfs @ 12.12 hrs, Volume= 0.060 af, Depth= 2.42" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.25" Area (ac) CN Description * 0.170 98 IMPERVIOUS 0.130 61 >75% Grass cover, Good, HSG B 0.300 82 Weighted Average 0.130 43.33% Pervious Area 0.170 56.67% Impervious Area MSE 24-hr 3 10-Year Rainfall=4.25"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 3S: DIRECT TO UNIVERSITY AVE Runoff = 1.48 cfs @ 12.12 hrs, Volume= 0.060 af, Depth= 1.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.25" Area (ac) CN Description * 0.100 98 IMPERVIOUS 0.430 61 >75% Grass cover, Good, HSG B 0.530 68 Weighted Average 0.430 81.13% Pervious Area 0.100 18.87% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Summary for Subcatchment 4S: PROP. TO BASIN Runoff = 9.07 cfs @ 12.23 hrs, Volume= 0.588 af, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.25" Area (ac) CN Description * 1.730 98 IMPERVIOUS 0.730 61 >75% Grass cover, Good, HSG B 2.460 87 Weighted Average 0.730 29.67% Pervious Area 1.730 70.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 5S: PROP. TO 4TH ST Runoff = 0.06 cfs @ 12.11 hrs, Volume= 0.002 af, Depth= 0.94" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 10-Year Rainfall=4.25" MSE 24-hr 3 10-Year Rainfall=4.25"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Area (ac) CN Description * 0.000 98 IMPERVIOUS 0.030 61 >75% Grass cover, Good, HSG B 0.030 61 Weighted Average 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, MSE 24-hr 3 100-Year Rainfall=7.38"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.01 hrs, 7201 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Peak Elev=924.05' Storage=8,015 cf Inflow=17.92 cfs 1.199 afPond 1P: SUBSURFACE INFILT. BASIN Discarded=0.11 cfs 0.312 af Primary=7.98 cfs 0.647 af Secondary=9.81 cfs 0.239 af Outflow=17.90 cfs 1.199 af Inflow=19.21 cfs 1.051 afReach 1R: PROP. TO UNIVERSITY AVE Outflow=19.21 cfs 1.051 af Runoff Area=2.720 ac 65.44% Impervious Runoff Depth=5.62"Subcatchment 1S: EX. TO UNIVERSITY AVE Tc=15.0 min CN=85 Runoff=19.24 cfs 1.273 af Runoff Area=0.300 ac 56.67% Impervious Runoff Depth=5.27"Subcatchment 2S: EX. TO 4TH ST Tc=5.0 min CN=82 Runoff=2.94 cfs 0.132 af Runoff Area=0.530 ac 18.87% Impervious Runoff Depth=3.72"Subcatchment 3S: DIRECT TO UNIVERSITY Tc=4.0 min CN=68 Runoff=4.01 cfs 0.164 af Runoff Area=2.460 ac 70.33% Impervious Runoff Depth=5.85"Subcatchment 4S: PROP. TO BASIN Tc=15.0 min CN=87 Runoff=17.92 cfs 1.199 af Runoff Area=0.030 ac 0.00% Impervious Runoff Depth=2.98"Subcatchment 5S: PROP. TO 4TH ST Tc=3.0 min CN=61 Runoff=0.19 cfs 0.007 af MSE 24-hr 3 100-Year Rainfall=7.38"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Summary for Pond 1P: SUBSURFACE INFILT. BASIN Inflow Area = 2.460 ac, 70.33% Impervious, Inflow Depth = 5.85" for 100-Year event Inflow = 17.92 cfs @ 12.22 hrs, Volume= 1.199 af Outflow = 17.90 cfs @ 12.23 hrs, Volume= 1.199 af, Atten= 0%, Lag= 0.3 min Discarded = 0.11 cfs @ 9.14 hrs, Volume= 0.312 af Primary = 7.98 cfs @ 12.23 hrs, Volume= 0.647 af Secondary = 9.81 cfs @ 12.23 hrs, Volume= 0.239 af Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs / 2 Peak Elev= 924.05' @ 12.23 hrs Surf.Area= 11,713 sf Storage= 8,015 cf Plug-Flow detention time= 188.8 min calculated for 1.199 af (100% of inflow) Center-of-Mass det. time= 188.7 min ( 972.4 - 783.6 ) Volume Invert Avail.Storage Storage Description #1 917.60' 6,316 cf 43.50'W x 242.00'L x 1.50'H Prismatoid 15,791 cf Overall x 40.0% Voids #2 918.10' 93 cf 4.00'D x 7.40'H CB 1 -Impervious #3 918.10'40 cf 4.00'D x 3.20'H CB 2 -Impervious #4A 917.60'906 cf 4.83'W x 245.28'L x 2.33'H Field A 2,766 cf Overall - 501 cf Embedded = 2,265 cf x 40.0% Voids #5A 918.10'501 cf ADS_StormTech SC-310 +Cap x 34 Inside #4 Effective Size= 28.9"W x 16.0"H => 2.07 sf x 7.12'L = 14.7 cf Overall Size= 34.0"W x 16.0"H x 7.56'L with 0.44' Overlap #6 921.30'62 cf Custom Stage Data (Irregular) Listed below (Recalc) -Impervious #7 918.10'123 cf 12.0" Round Pipe Storage -Impervious L= 157.0' S= 0.0376 '/' 8,042 cf Total Available Storage Storage Group A created with Chamber Wizard Elevation Surf.Area Perim. Inc.Store Cum.Store Wet.Area (feet)(sq-ft) (feet) (cubic-feet) (cubic-feet)(sq-ft) 921.30 6 10.0 0 0 6 922.00 225 60.0 62 62 286 Device Routing Invert Outlet Devices #1 Primary 919.10'12.0" Round Culvert L= 41.0' RCP, square edge headwall, Ke= 0.500 Inlet / Outlet Invert= 919.10' / 909.00' S= 0.2463 '/' Cc= 0.900 n= 0.012, Flow Area= 0.79 sf #2 Discarded 917.60'0.400 in/hr Exfiltration over Surface area #3 Secondary 921.30'24.0" x 36.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads #4 Device 3 918.10'15.0" Vert. Orifice/Grate C= 0.600 MSE 24-hr 3 100-Year Rainfall=7.38"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Discarded OutFlow Max=0.11 cfs @ 9.14 hrs HW=917.68' (Free Discharge) 2=Exfiltration (Exfiltration Controls 0.11 cfs) Primary OutFlow Max=7.98 cfs @ 12.23 hrs HW=924.05' (Free Discharge) 1=Culvert (Inlet Controls 7.98 cfs @ 10.16 fps) Secondary OutFlow Max=9.80 cfs @ 12.23 hrs HW=924.05' (Free Discharge) 3=Orifice/Grate (Passes 9.80 cfs of 47.93 cfs potential flow) 4=Orifice/Grate (Orifice Controls 9.80 cfs @ 7.99 fps) Summary for Reach 1R: PROP. TO UNIVERSITY AVE Inflow Area = 2.990 ac, 61.20% Impervious, Inflow Depth = 4.22" for 100-Year event Inflow = 19.21 cfs @ 12.22 hrs, Volume= 1.051 af Outflow = 19.21 cfs @ 12.22 hrs, Volume= 1.051 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs Summary for Subcatchment 1S: EX. TO UNIVERSITY AVE Runoff = 19.24 cfs @ 12.22 hrs, Volume= 1.273 af, Depth= 5.62" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.38" Area (ac) CN Description * 1.780 98 IMPERVIOUS 0.940 61 >75% Grass cover, Good, HSG B 2.720 85 Weighted Average 0.940 34.56% Pervious Area 1.780 65.44% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 2S: EX. TO 4TH ST Runoff = 2.94 cfs @ 12.12 hrs, Volume= 0.132 af, Depth= 5.27" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.38" Area (ac) CN Description * 0.170 98 IMPERVIOUS 0.130 61 >75% Grass cover, Good, HSG B 0.300 82 Weighted Average 0.130 43.33% Pervious Area 0.170 56.67% Impervious Area MSE 24-hr 3 100-Year Rainfall=7.38"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 5.0 Direct Entry, Summary for Subcatchment 3S: DIRECT TO UNIVERSITY AVE Runoff = 4.01 cfs @ 12.12 hrs, Volume= 0.164 af, Depth= 3.72" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.38" Area (ac) CN Description * 0.100 98 IMPERVIOUS 0.430 61 >75% Grass cover, Good, HSG B 0.530 68 Weighted Average 0.430 81.13% Pervious Area 0.100 18.87% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 4.0 Direct Entry, Summary for Subcatchment 4S: PROP. TO BASIN Runoff = 17.92 cfs @ 12.22 hrs, Volume= 1.199 af, Depth= 5.85" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.38" Area (ac) CN Description * 1.730 98 IMPERVIOUS 0.730 61 >75% Grass cover, Good, HSG B 2.460 87 Weighted Average 0.730 29.67% Pervious Area 1.730 70.33% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 15.0 Direct Entry, Summary for Subcatchment 5S: PROP. TO 4TH ST Runoff = 0.19 cfs @ 12.11 hrs, Volume= 0.007 af, Depth= 2.98" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs MSE 24-hr 3 100-Year Rainfall=7.38" MSE 24-hr 3 100-Year Rainfall=7.38"1989022_Prodeo Printed 8/5/2019Prepared by Rehder & Associates, Inc. HydroCAD® 10.00-24 s/n 02629 © 2018 HydroCAD Software Solutions LLC Area (ac) CN Description * 0.000 98 IMPERVIOUS 0.030 61 >75% Grass cover, Good, HSG B 0.030 61 Weighted Average 0.030 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 3.0 Direct Entry, Soil Map—Anoka County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/17/2019 Page 1 of 3498777049877904987810498783049878504987870498789049879104987930498777049877904987810498783049878504987870498789049879104987930479290479310479330479350479370479390479410 479290 479310 479330 479350 479370 479390 479410 45° 2' 40'' N 93° 15' 46'' W45° 2' 40'' N93° 15' 40'' W45° 2' 34'' N 93° 15' 46'' W45° 2' 34'' N 93° 15' 40'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS84 0 40 80 160 240Feet 0 10 20 40 60Meters Map Scale: 1:886 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI UuB Urban land-Udorthents (cut and fill land) complex, 0 to 6 percent slopes 3.5 100.0% Totals for Area of Interest 3.5 100.0% Soil Map—Anoka County, Minnesota Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/17/2019 Page 3 of 3 CITY OF COLUMBIA HEIGHTS PLANNING AND ZONING COMMISSION PLANNING REPORT CASE NUMBER: 2019-0903 DATE: September 4, 2019 TO: Columbia Heights Planning and Zoning Commission APPLICANT: Contractors Capital company DEVELOPMENT: Columbia Heights Senior Living LOCATION: 35-30-24-43-0125 (unassigned address) known as remnant parcel REQUEST: Preliminary Plat, Site Plan Review PREPARED BY: Elizabeth Hammond, City Planner INTRODUCTION Contractors Capital Company has applied for Preliminary Plat Review and Site Plan Review for the vacant property (unassigned address) known as the remnant parcel, and located south of Huset Park at the corner of Jefferson Street and Huset Parkway. The property has been vacant since the larger development site, encompassing the Huset Park Townhomes and the Legends of Columbia Heights was constructed, starting in 2005. This parcel was never included during the initial construction project that resulted in the adjacent townhomes. Shortly after the townhomes were mostly completed, the recession occurred which resulted in this parcel as well as the area adjacent to University Avenue being left vacant for a number of years. Most recently in 2016, the site adjacent to University Avenue was redeveloped into what is now the Legends of Columbia Heights, an active living senior apartment building. The remnant parcel as it is known is the final remaining vacant parcel of the previous industrial area and redevelopment site. Contractors Capital Company is proposing to construct a three story, 77 unit senior living community. The building would have a mix of independent living (50 units), assisted living (12 units), and memory care units (15 units). The building would provide ample underground parking as well as surface parking, with storage areas and landscaping and storm water improvement throughout the site. The building would also contain amenities such as common lounge areas, meeting rooms, a hair salon and outdoor patios. ZONING ORDINANCE The site is currently platted as an Outlot from the previous plat and development for the adjacent townhomes. As part of this application it is being re-platted to “Columbia Heights Senior Living”, and the property owner will be dedicating land back to the City to accommodate for the right of way (where the roundabout is located), and also dedicating full perimeter City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 2 easements for drainage and utility. Once the Final Plat is approved, a new address will be issued for the property. The property is located in the Mixed Use Zoning District, as are the properties to the south and west. Properties to the north are located in the public and open space district, and the properties to the east are located in the light industrial district. COMPREHENSIVE PLAN The Comprehensive Plan guides this area for high density residential development. The Comprehensive Plan aims to ensure housing for the projected aging population is accommodated for throughout the City. Constructing a senior living community designed for aging in place, with graduated care options is consistent with the City’s Comprehensive Plan. SITE PLAN The subject property is located in the Mixed Use Zoning District and does not have specific lot size and setback requirements. The City can be flexible in this area to facilitate a successful development. Staff believes that the proposed building location and height is consistent with the surrounding development in terms of size and scale, and should fit in well with the neighborhood. Specific site improvements will be outlined in a Development Contract, and approved by the City Council at a later date and prior to construction. 1. Parking The proposed site plan is for 77 total units consisting of independent senior living, assisted living, and memory care units. City Code requires one parking space for every two units of senior housing/assisted living. By this standard, the City would require that 38.5 parking spaces be provided. The proposed development exceeds this requirement, by providing 55 spaces underground, and 35 surface parking spaces. 2. Access The site will be served by one main entrance off McKenna St. 3. Landscaping The proposed landscaping materials are shown on the attached Landscape Plan. The applicant is proposing to plant trees, shrubs and grasses which will complement the layout of the development. The landscape plan calls for native perennial and deciduous plantings in combination with shrubs and perennials to be planted along the periphery of the building. The development will be within close proximity to Huset Park and Murzyn Hall. Huset Park will provide additional outdoor opportunities for more active residents, and the Senior Center at Murzyn Hall is adjacent to Huset Park. FINDINGS OF FACT Section 9.104 (L) of the Zoning Ordinance outlines three conditions that must be met in order for the City to grant a Preliminary Plat. They are as follows: (a) The proposed Preliminary Plat conforms to the requirements of City Code Section 9.115. This is correct. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 3 (b) The proposed subdivision is consistent with the Comprehensive Plan. This is correct. (c) The proposed subdivision contains parcel and land subdivision layout that is consistent with good planning and site engineering design principles. This is correct. FINDINGS OF FACT Section 9.104 (N) of the Zoning Ordinance outlines four findings of fact that must be met in order for the City to approve a Site Plan. They are as follows: a. The Site Plan conforms to all applicable requirements of this article. The applicable Zoning Code requirements are achieved. b. The Site Plan is consistent with the applicable provisions of the City’s Comprehensive Plan. This is correct. c. The Site Plan is consistent with any applicable area plan. This is correct. There is a development contract between the property owner and the City that calls for approximately 80 units of senior housing. The proposal for 77 units of graduated care senior living is consentient with this plan for the parcel. d. The Site Plan minimizes any adverse impacts on property in the immediate vicinity and the public right-of-way. This is correct. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 4 RECOMMENDATION Staff recommends that the Planning Commission recommend that the City Council approve the Preliminary Plat as presented subject to certain conditions, and that the Planning Commission approve the Site Plan for the property located at PID: 35-30-24-43-0125 (unassigned address, known as the remnant parcel, south of Huset Park). Motion: Move to waive the reading of Resolution No 2019-72, there being ample copies available to the public. Motion: Motion to recommend that the City Council approve the Preliminary Plat as presented, subject to the following conditions: 1. All required state and local codes, permits, licenses and inspections will be met and in full compliance. 2. The applicant shall be responsible for the cost of filing and recording written easements with the Anoka County Recorder’s Office. 3. An approved Preliminary Plat shall be valid for a period of one year from the date of the City Council approval. In the event that a Final Plat is not submitted within this time period, the Preliminary Plat will become void. City of Columbia Heights Planning and Zoning Commission September 4, 2019 Planning Report Page 5 Motion: Move to waive the reading of Resolution No. 2019-PZ03, there being ample copies available to the public. Motion: Move to adopt Resolution No. 2019-PZ03, being a resolution approving a Site Plan, for Contractors Capital for the proposed senior living development, subject to the following conditions: 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. Trash and/or recycling collection areas shall be enclosed on at least three sides by an opaque screening wall or fence no less than six feet in height. The open side of the enclosure shall not face any public street or the front yard of any adjacent property. 3. There shall be no deliveries, loading or unloading of goods and materials between the hours of 10:00 pm and 6:00 am. 4. All exterior lighting shall be downcast as not to adversely impact neighboring residential properties. The applicant must submit a detailed lighting plan for review by the Building Official, prior to construction. 5. Mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Plans detailing how any rooftop units are to be screened must be submitted with the building permit. 6. The applicant shall meet the requirements outlined in the attached report from the Public Works Department dated, August 26, 2019. 7. The applicant shall meet the requirements outlined in the attached report from the Fire Department dated, August 27, 2019. 8. All City Storm Water Management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. 9. Site and elevation plans included in this submittal, shall become part of this approval. 10. All other applicable local, state, and federal requirements shall be met at all times. 11. The property owner and the City will enter in to a development contract governing site improvements and shall be executed by the property owner and the City prior to the issuance of a building permit. ATTACHMENTS Resolution No. 2019-PZ03 Resolution No. 2019-72 Applications Narrative Public Works Department Review Letter Fire Department Review Letter RESOLUTION NO. 2019 – PZ03 A Resolution of the Planning Commission approving a Site Plan for the proposed senior living community located at the corner of Jefferson Street and Huset Parkway (address unassigned), Columbia Heights, MN 55421 (PID 35-30-24-43-0125) Whereas, a proposal (Case 2019-0903) has been submitted by contractors Capital Company to the Planning Commission, requesting Site Plan Review from the City of Columbia Heights at the following site: LOCATION: (PID 35-30-24-43-0125) LEGAL DESCRIPTION: On file at City Hall. THE APPLICANT SEEKS THE FOLLOWING: Site Plan Review for a 77 unit senior living community Whereas, the Planning Commission held a public hearing as required by the City Zoning Code on September 4, 2019; Whereas, the Planning Commission has considered the advice and recommendations of City staff regarding the effect of the proposed Site Plan upon the health, safety, and welfare of the community and its Comprehensive Plan, as well as any concerns related to compatibility of uses, traffic, property values, light, air, danger of fire, and risk to public safety in the surrounding areas; Now, therefore, be it resolved, the Planning Commission of the City of Columbia Heights after reviewing the proposal, accepts and adopts the following findings: 1. The site plan conforms to all applicable requirements of this article. 2. The site plan is consistent with the applicable provisions of the City’s Comprehensive Plan. 3. The site plan is consistent with any applicable area plan. 4. The site plan minimizes any adverse impacts on property in the immediate vicinity and the public right-of-way. Further, be it resolved, that the attached conditions, maps, and other information shall become part of this approval; and in granting this approval the City and the applicant agree that this approval shall become null and void if the project has not been completed within one (1) calendar year after the approval date, subject to petition for renewal of the permit. Resolution No.2019-PZ02 Page 2 CONDITIONS: 1. The building and site shall be meet all requirements found in the Fire Code and the Building Code. 2. Trash and/or recycling collection areas shall be enclosed on at least three sides by an opaque screening wall or fence no less than six feet in height. The open side of the enclosure shall not face any public street or the front yard of any adjacent property. 3. There shall be no deliveries, loading or unloading of goods and materials between the hours of 10:00 pm and 6:00 am. 4. All exterior lighting shall be downcast as not to adversely impact neighboring residential properties. The applicant must submit a detailed lighting plan for review by the Building Official, prior to construction. 5. Mechanical equipment shall be placed and/or screened so as to minimize the visual impact on adjacent residential properties and from public streets. Plans detailing how any rooftop units are to be screened must be submitted with the building permit. 6. The applicant shall meet the requirements outlined in the attached report from the Public Works Department dated, August 26, 2019. 7. The applicant shall meet the requirements outlined in the attached report from the Fire Department dated, August 27, 2019. 8. All City Storm Water Management requirements and Mississippi Watershed Management Organization requirements shall be achieved for this property. 9. Site and elevation plans included in this submittal, shall become part of this approval. 10. All other applicable local, state, and federal requirements shall be met at all times. 11. The property owner and the City will enter in to a development contract governing site improvements and shall be executed by the property owner and the City prior to the issuance of a building permit. Passed this 4th day of September, 2019 Offered by: ______________________________ Seconded by: Marlaine Szurek, Chair Roll Call: Ayes: Abstain: ____________________________________ Shelley Hanson, Secretary RESOLUTION NO. 2019-72 A resolution of the City Council for the City of Columbia Heights, Minnesota, approving a Preliminary Plat for Contractor Capital Company. Whereas, a proposal (Case # 2019-0903) has been submitted by Contractors Capital Company to the City Council requesting Preliminary Plat Approval from the City of Columbia Heights at the following site: ADDRESS: 35-30-24-43-0125 (unassigned address) known as remnant parcel LEGAL DESCRIPTION: On file at City Hall. THE APPLICANT SEEKS THE FOLLOWING: Preliminary Plat Approval per Code Section 9.104 (L). Whereas, the Planning and Zoning Commission held a public hearing as required by the City Zoning Code on September 4, 2019; Whereas, the City Council has considered the advice and recommendations of the Planning and Zoning Commission regarding the effect of the proposed Preliminary Plat upon the health, safety, and welfare of the community and its Comprehensive Plan, as well as any concerns related to compatibility of uses, traffic, property values, light, air, danger of fire, and risk to public safety in the surrounding areas; Now, therefore, in accordance with the foregoing, and all ordinances and regulations of the City of Columbia Heights, the City Council of the City of Columbia Heights makes the following: FINDINGS OF FACT Section 9.104 (L) of the Zoning Ordinance outlines conditions that must be met in order for the City to grant a Preliminary Plat. They are as follows: (a) The proposed Preliminary Plat conforms to the requirements of City Code Section 9.115. (b) The proposed Subdivision is consistent with the Comprehensive Plan. (c) The proposed Subdivision contains parcel and land subdivision layout that is consistent with good planning and site engineering design principles. Further, be it resolved, that the attached plans, maps, and other information shall become part of this Preliminary Plat; and in granting approval the City and the applicant agree that the Plat shall become null and void if a Final Plat is not submitted to the City Council within one (1) calendar year after the approval date, subject to petition for renewal. CONDITIONS 1. All required state and local codes, permits, licenses and inspections will be met and in full compliance. 2. The applicant shall be responsible for the cost of filing and recording written easements with the Anoka County Recorder’s Office. 3. An approved Preliminary Plat shall be valid for a period of one year from the date of the City Council City of Columbia Heights - Council Resolution Page 2 approval. In the event that a Final Plat is not submitted within this time period, the Preliminary Plat will become void. ORDER OF COUNCIL Passed this 9th day of September, 2019 Offered by: Seconded by: Roll Call: Donna Schmitt, Mayor Attest: Nicole Tingley, City Clerk/Council Secretary CITY OF COLUMBIA HEIGHTS Public Works Department TO: ELIZABETH HOLMBECK CITY PLANNER FROM: KEVIN HANSEN PUBLIC WORKS DIRECTOR/CITY ENGINEER LAUREN LETSCHE STORMWATER SPECIALIST DATE: August 26, 2019 SUBJECT: Columbia Heights Senior Living I have reviewed the site plan and storm water calculations submittal packet dated 8/5/2019, and have the following requirements/comments for final approval by PW/Engineering: General / Plat  The City shall require a pre-construction conference prior to any land alteration activities beginning.  The maintenance of the storm sewer BMP shall be defined in a separate planning document and will require an easement per City and MWMO requirements.  As an outlot, the property should be platted. We would recommend a perimeter easements for drainage and utilities of 5 feet, except on the north and east property boundaries. On the north the site plan shows 14 .7 feet from the back of sidewalk to their retaining wall, and on the east the site plan shows 17.3 feet from the back of curb to their elevated patio – I would recommend easements close to these dimensions.  Comments herein are based on the City submittal plans. Final review comments will be based on from the final or construction plan set. Grading  The plan set will require an erosion control plan and SWPPP, meeting City and MWMO requirements.  Prior to site activities, please provide the City with a copy of Site NPDES Construction Permit.  Perimeter and entrance erosion control measures shall be installed and inspected by the Engineering department prior to site grading activities beginning. Coordinate erosion control measures with the Engineering department if building construction is initiated prior general site grading.  Site access during construction shall be limited to McKenna Street or Lomianki Lane.  All slopes greater than 4:1 shall be provided erosion control blanket.  Catch basin inlet protection, such as Wimco’s or equivalent shall be provided on catch basins until restoration is completed. The low point CB’s immediately adjacent to the roundabout shall also be protected. ROW / Utilities / Paving  All utilities and storm water features serving the Development shall be privately owned and maintained. All utilities shall meet the City of Columbia Heights specifications for materials and installation.  Site/Civil work shall be inspected by the City Engineering Department (connection to existing utility system). 24-hour advance notice of an inspection is required.  The Storm Water Plan generally meets the requirements of the City for rate control and MWMO for infiltration (filtration).  Routing of storm water discharge:  Provide a set of as-built drawings meeting City requirements at the completion of site/civil construction in both hardcopy and electronic (pdf) format.  All stormwater best management practices (BMP’s) need to be placed in designated drainage and utility easements.  The storm water report details infiltration within the filtration BMP. Is this based on soil borings or assumed soil characteristics?  The pond easement should include a provision that snow may not be piled or dumped into the stormwater pond.  As previously indicated, flooding occurring on Jefferson Street and Huset Parkway all the way to the point where the road widens. Staff recommends a minimum elevation of 906 for the retaining wall parallel to Huset Parkway and parking lot curbing functioning as the lowest elevation.  How will the roof drains be connected into the storm sewer (rate control)?  The slope of the 12” HDPE at the outlet of the storm sewer system develops velocities of 15.5fps, we would prefer velocities to not exceed 10 fps.  Utility disconnects must be made at the main and inspected by the utility department for the salvaged hydrant and valve.  Location of tree installations and utility locations should be coordinated to maintain 10’ separation from all utilities.  There may be a conflict in elevations of the storm sewer and the water main on the south side of the storm sewer system - a water main offset may be needed.  Please add ‘stop’ signs at the development driveway exit(s).  Interior roads are private roads (McKenna & Lomianki), but have utility and drainage easements.  With new sidewalk, the connection point at Jefferson Street from Lomianki Lane should have a new pedestrian ramp (sheet 2.0 indicates match existing). Please provide one full size and one 11x17 set of Final or Construction Plans to the Engineering department prior to construction. If you have any questions or need further information, please contact me at (763) 706-3705. C: Kathy Young, Assistant City Engineer Lauren Letsche, Storm Water Specialist KH:kh G: \Users\Public Works\plan reviews\2019\Columbia Heights Senior Living_08262019.doc 20190827 CHFD Site Plan Review.docx 08/27/2019 Tollberg Homes Columbia Heights Senior Living Project Located at Huset Parkway and Jefferson St NE Review of the Site Plan for the Columbia Heights Senior Living Project is complete. This review consisted of an 18 page document dated 8/5/2019 and submitted on 8/19/2019. The following report evaluates the site plan drawings for compliance with the Minnesota State Fire and Building Codes, NFPA Standards, and Columbia Heights Fire Department Policies. Based on description in applicant’s narrative, the review is based on the building having an Occupancy Care Facility Classification Class B-3, supervised living facility: more than 16 residents; all of whom may not be capable of self-preservation. IBC Occupancy Classification: I-2 1. The occupancy use of the proposed building requires the installation of an approved automatic sprinkler system throughout the building. 2. The installation of an automatic sprinkler system throughout the building allows for an increase in distance for fire road access, making actual on-site travel by fire suppression apparatus unnecessary and eliminating a need for a second access point to the site. 3. The site proposal illustrates the fire department connection located to the left of the main entry to the building. The preference for immediate access to fire department connection is to place the connection along the wall on the West side of the Northwest corner of South wing of the proposed building. Exact location of the fire department connection shall be pre-approved by fire code official. 4. The site plan depicts the re-location of an existing hydrant on McKenna St NE to the north side of the proposed entrance to site. The preference for fire department operations is to locate the hydrant on the south side of the entrance, keeping fire department operations on the south side of the entrance to the site. 5. Fire Department proposes that at a minimum, the east side of McKenna St NE between Lomianki Ln and the proposed entrance to the site be marked as “NO PARKING—FIRE LANE” to facilitate fire department access to the site, hydrant, and fire department connection. 6. Applicant shall provide fire flow requirements to illustrate that the water main is capable of supporting the demands of the fire hydrant on McKenna St NE and fire protection system. 7. A full code review fire protection system plans is required. Respectfully submitted, Captain Daniel O’Brien Attachment: Map Site Plan Review: Tollberg Homes Columbia Heights Senior Living Project 08/27/2019 Page 2 www.CivilSiteGroup.com 4931 West 35th Street • Suite 200 • St. Louis Park • Minnesota • 55416 (612) 615-0060 Stormwater Management Report Project: Columbia Heights Senior Living Huset Pkwy & Jefferson St NE Columbia Heights, MN 55421 Developer: Tollberg Homes 1428 5th Ave Anoka, MN 55303 All plans and supporting Documentation contained in this report have been reviewed and approved by the Registered Engineer listed below and it is hereby certified that the plans comply with the requirements of the ordinance. I hereby certify that this report was prepared by me or under my direct supervision and that I am a duly Registered Professional Engineer under the laws of the State of Minnesota. __ Matthew R. Pavek P.E. Registration Number: 44263 Date: 08/05/19 www.CivilSiteGroup.com 4931 West 35th Street • Suite 200 • St. Louis Park • Minnesota • 55416 (612) 615-0060 Table of Contents: Cover Sheet Summary Narrative Stormwater Calculations Drainage Area Maps Existing Drainage Area Map Proposed Drainage Area Map HydroCAD Calculations Existing HydroCAD Calculations Proposed HydroCAD Calculations www.CivilSiteGroup.com 4931 West 35th Street • Suite 200 • St. Louis Park • Minnesota • 55416 (612) 615-0060 Summary Narrative: This Stormwater Management Report accompanies the Civil Plans prepared for the Columbia Heights Senior Living project dated 08/05/19 and attached to this report. Existing Site Conditions: The existing site for this project is a vacant lot. This project will be to construct a new senior living building with associated parking lot area. The disturbed area for this project is approximately 1.5 acres. The existing amount of impervious surface area within the disturbed limits is 0.1 acres. Soils: Soil borings have been completed for the site and are in the project file. A final soils report will be provided once it has been completed. The soils on site been classified to have a Hydrologic Soil Group “D” designation which is not conducive to infiltration. Groundwater: Groundwater was not observed in any of the soil borings on site. Proposed Site: This project will be to construct a new senior living facility and parking lot area. Grading and landscape improvements will occur. The proposed amount of impervious surface area within the disturbed limits is 1.2 acres. Requirements: Per City of Columbia Heights Rate Control: Runoff rate may not exceed existing conditions for the 2, 10 and 100-YR storm events. Utilize Atlas-14 rainfall data. Volume Reduction Mississippi Watershed Management Organization (MWMO): Stormwater runoff volume must be reduced by 1.1” over all new impervious surfaces (includes all newly constructed impervious surfaces, i.e. all impervious disturbed and reconstructed as well as new impervious). Since the soils on site are not conducive to infiltration, a filtration chamber system is proposed. www.CivilSiteGroup.com 4931 West 35th Street • Suite 200 • St. Louis Park • Minnesota • 55416 (612) 615-0060 Proposed Stormwater Facilities: This project is proposing to meet the requirements of the City of Columbia Heights and the MWMO by using an underground filtration system. The underground system has been designed to provide rate control. Rate Control practices proposed: Rate control for the project is provided by the proposed infiltration basin. The runoff rates for the 2-YR, 10-YR and 100-YR rainfall events will be less than the existing rates (utilizing Atlas-14). See the table below for the existing and proposed runoff rates for this project. Rate Control Summary Table: 2-YR [2.94"]10-YR [4.47"] 100-YR [7.81"] EX1 0.40 1.51 4.78 EX2 0.69 1.90 5.13 TOTAL 1.09 3.41 9.91 2-YR [2.94"]10-YR [4.47"] 100-YR [7.81"] PR1 0.86 1.82 4.13 1P (PR2)0.13 1.47 3.53 TOTAL 0.99 3.29 7.66 Overall Stormwater Rate Summary 2-Year Event 1.09 0.99 10-Year Event 3.41 3.29 100-Year Event 9.91 7.66 Drainage Area Stormwater Rate Summary Drainage Area Existing Rate (cfs) Proposed Conditions Rate (cfs) Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) As seen in the tables above, the proposed runoff rates are less than existing for all conditions. REQUIREMENT SATISFIED www.CivilSiteGroup.com 4931 West 35th Street • Suite 200 • St. Louis Park • Minnesota • 55416 (612) 615-0060 Volume/Water Quality Control Summary: Water volume and water quality control requirements are met by providing filtration onsite in the amount equal to 1.1 inches of runoff from the new or reconstructed impervious surfaces. The proposed filtration basin has been sized to meet the 1.1” requirement. The calculations are shown below: Stormwater Water Quality and Volume Summary New Impv. Area (sf) Required Volume (cf) PR1 8777 805 PR2A 42777 3921 TOTAL 51554 4726 Required Infiltration Vol. Summary Infiltration Volume = 1.1"*Dist. Impv. Area Drainage Area Stormwater Quality Control Provided Filtration Basin 1 5440 TOTAL 5440 Proposed BMP Area Provided Vol (cf) 5440 CF > 4726 CF REQUIREMENT SATISFIED Conclusions: This project is proposing to utilize an underground filtration basin to meet the requirements of the City of Columbia Heights and the MWMO. The underground filtration basin will be designed to provide rate control to match existing discharge rates from the site and the required volume reduction. Civil Site Group - Stormwater Calculations Area [SF]CN Value Area [SF]CN Value Area [SF]CN Value EX1 712 98 33347 61 34059 62 EX2 5424 98 25318 61 30742 68 Area [SF]CN Value Area [SF]CN Value Area [SF]CN Value PR1 8777 98 11508 61 20285 77 PR2 42777 98 1739 61 44516 97 Impervious [SF] Impervious [AC] Pervious [SF] Pervious [AC]Total [SF]Total [AC] Existing Site 6136 0.14 58665 1.35 64801 1.49 Proposed Site 51554 1.18 13247 0.30 64801 1.49 2-YR [2.94"]10-YR [4.47"] 100-YR [7.81"] EX1 0.40 1.51 4.78 EX2 0.69 1.90 5.13 TOTAL 1.09 3.41 9.91 2-YR [2.94"]10-YR [4.47"] 100-YR [7.81"] PR1 0.86 1.82 4.13 1P (PR2)0.13 1.47 3.53 TOTAL 0.99 3.29 7.66 Overall Stormwater Rate Summary 2-Year Event 1.09 0.99 10-Year Event 3.41 3.29 100-Year Event 9.91 7.66 Stormwater Water Quality and Volume Summary New Impv. Area (sf) Required Volume (cf) PR1 8777 805 PR2A 42777 3921 TOTAL 51554 4726 Filtration Basin 1 5440 TOTAL 5440 Drainage Area Stormwater Rate Summary Drainage Area Site Area Summary Existing Rate (cfs) Proposed Conditions Rate (cfs) Columbia Heights Senior Living Pervious Area Total Area Existing Conditions Proposed Conditions Drainage Area Impervious Area Total AreaImpervious AreaDrainage Area Pervious Area Proposed BMP Area Provided Vol (cf) Existing Conditions Rate (cfs) Proposed Conditions Rate (cfs) Required Infiltration Vol. Summary Infiltration Volume = 1.1"*Dist. Impv. Area Drainage Area EX1EX IMPV = 712 SFEX PERV = 33347 SFTOTAL = 34059 SFEX2EX IMPV = 5424 SFEX PERV = 25318 SFTOTAL = 30742 SFProject Number:Issue Date:Revision Number:Revision Date:4931 W. 35TH ST., #200ST. LOUIS PARK, MN 55416952.250.2003 / 763.213.394www.CivilSiteGroup.comCOLUMBIA HEIGHTS SENIOR LIVING - COLUMBIA HEIGHTS, MNEXISTING DRAINAGE MAPDA11924308/05/19..01" = 50'-0"50'-0"25'-0"N PR1PR IMPV = 8777 SFPR PERV = 11508 SFTOTAL = 20285 SFPR2PR IMPV = 42777 SFPR PERV = 1739 SFTOTAL = 44516 SFProject Number:Issue Date:Revision Number:Revision Date:4931 W. 35TH ST., #200ST. LOUIS PARK, MN 55416952.250.2003 / 763.213.394www.CivilSiteGroup.comCOLUMBIA HEIGHTS SENIOR LIVING - COLUMBIA HEIGHTS, MNPROPOSED DRAINAGE MAPDA21924308/05/19..01" = 50'-0"50'-0"25'-0"N EX1 EXISTING DA 1 EX2 EXISTING DA 2 Routing Diagram for 19243-COLUMBIA HEIGHTS EXISTING Prepared by {enter your company name here}, Printed 8/5/2019 HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Subcat Reach Pond Link COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS 19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 2HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 1.347 61 >75% Grass cover, Good, HSG B (EX1, EX2) 0.141 98 Paved parking, HSG B (EX1, EX2) 1.488 65 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS 19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 3HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 1.488 HSG B EX1, EX2 0.000 HSG C 0.000 HSG D 0.000 Other 1.488 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS 19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 4HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 1.347 0.000 0.000 0.000 1.347 >75% Grass cover, Good EX1, EX2 0.000 0.141 0.000 0.000 0.000 0.141 Paved parking EX1, EX2 0.000 1.488 0.000 0.000 0.000 1.488 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 5HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=34,059 sf 2.09% Impervious Runoff Depth=0.37"Subcatchment EX1: EXISTING DA 1 Tc=6.0 min CN=62 Runoff=0.40 cfs 0.024 af Runoff Area=30,742 sf 17.64% Impervious Runoff Depth=0.60"Subcatchment EX2: EXISTING DA 2 Tc=6.0 min CN=68 Runoff=0.69 cfs 0.035 af Total Runoff Area = 1.488 ac Runoff Volume = 0.059 af Average Runoff Depth = 0.48" 90.53% Pervious = 1.347 ac 9.47% Impervious = 0.141 ac COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 6HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX1: EXISTING DA 1 Runoff = 0.40 cfs @ 12.00 hrs, Volume= 0.024 af, Depth= 0.37" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 712 98 Paved parking, HSG B 33,347 61 >75% Grass cover, Good, HSG B 34,059 62 Weighted Average 33,347 97.91% Pervious Area 712 2.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX1: EXISTING DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.44 0.42 0.4 0.38 0.36 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Runoff Area=34,059 sf Runoff Volume=0.024 af Runoff Depth=0.37" Tc=6.0 min CN=62 0.40 cfs COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 7HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EXISTING DA 2 Runoff = 0.69 cfs @ 11.99 hrs, Volume= 0.035 af, Depth= 0.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 5,424 98 Paved parking, HSG B 25,318 61 >75% Grass cover, Good, HSG B 30,742 68 Weighted Average 25,318 82.36% Pervious Area 5,424 17.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX2: EXISTING DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Runoff Area=30,742 sf Runoff Volume=0.035 af Runoff Depth=0.60" Tc=6.0 min CN=68 0.69 cfs COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 8HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=34,059 sf 2.09% Impervious Runoff Depth=1.12"Subcatchment EX1: EXISTING DA 1 Tc=6.0 min CN=62 Runoff=1.51 cfs 0.073 af Runoff Area=30,742 sf 17.64% Impervious Runoff Depth=1.51"Subcatchment EX2: EXISTING DA 2 Tc=6.0 min CN=68 Runoff=1.90 cfs 0.089 af Total Runoff Area = 1.488 ac Runoff Volume = 0.162 af Average Runoff Depth = 1.31" 90.53% Pervious = 1.347 ac 9.47% Impervious = 0.141 ac COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 9HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX1: EXISTING DA 1 Runoff = 1.51 cfs @ 11.98 hrs, Volume= 0.073 af, Depth= 1.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Area (sf) CN Description 712 98 Paved parking, HSG B 33,347 61 >75% Grass cover, Good, HSG B 34,059 62 Weighted Average 33,347 97.91% Pervious Area 712 2.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX1: EXISTING DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)1 0 Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Runoff Area=34,059 sf Runoff Volume=0.073 af Runoff Depth=1.12" Tc=6.0 min CN=62 1.51 cfs COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 10HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EXISTING DA 2 Runoff = 1.90 cfs @ 11.98 hrs, Volume= 0.089 af, Depth= 1.51" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Area (sf) CN Description 5,424 98 Paved parking, HSG B 25,318 61 >75% Grass cover, Good, HSG B 30,742 68 Weighted Average 25,318 82.36% Pervious Area 5,424 17.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX2: EXISTING DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Runoff Area=30,742 sf Runoff Volume=0.089 af Runoff Depth=1.51" Tc=6.0 min CN=68 1.90 cfs COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 11HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=34,059 sf 2.09% Impervious Runoff Depth=3.41"Subcatchment EX1: EXISTING DA 1 Tc=6.0 min CN=62 Runoff=4.78 cfs 0.222 af Runoff Area=30,742 sf 17.64% Impervious Runoff Depth=4.08"Subcatchment EX2: EXISTING DA 2 Tc=6.0 min CN=68 Runoff=5.13 cfs 0.240 af Total Runoff Area = 1.488 ac Runoff Volume = 0.462 af Average Runoff Depth = 3.73" 90.53% Pervious = 1.347 ac 9.47% Impervious = 0.141 ac COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 12HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX1: EXISTING DA 1 Runoff = 4.78 cfs @ 11.98 hrs, Volume= 0.222 af, Depth= 3.41" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Area (sf) CN Description 712 98 Paved parking, HSG B 33,347 61 >75% Grass cover, Good, HSG B 34,059 62 Weighted Average 33,347 97.91% Pervious Area 712 2.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX1: EXISTING DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Runoff Area=34,059 sf Runoff Volume=0.222 af Runoff Depth=3.41" Tc=6.0 min CN=62 4.78 cfs COLUMBIA HEIGHTS SENIOR LIVING - EXISTING CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS EXISTING Printed 8/5/2019Prepared by {enter your company name here} Page 13HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment EX2: EXISTING DA 2 Runoff = 5.13 cfs @ 11.97 hrs, Volume= 0.240 af, Depth= 4.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Area (sf) CN Description 5,424 98 Paved parking, HSG B 25,318 61 >75% Grass cover, Good, HSG B 30,742 68 Weighted Average 25,318 82.36% Pervious Area 5,424 17.64% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment EX2: EXISTING DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)5 4 3 2 1 0 Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Runoff Area=30,742 sf Runoff Volume=0.240 af Runoff Depth=4.08" Tc=6.0 min CN=68 5.13 cfs PR1 PROPOSED DA 1 PR2 PROPOSED DA 2 1P UNDERGROUND FILT BASIN 1 Routing Diagram for 19243-COLUMBIA HEIGHTS PROPOSED Prepared by {enter your company name here}, Printed 8/5/2019 HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Subcat Reach Pond Link COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS 19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 2HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Area Listing (all nodes) Area (acres) CN Description (subcatchment-numbers) 0.304 61 >75% Grass cover, Good, HSG B (PR1, PR2) 1.184 98 Paved parking, HSG B (PR1, PR2) 1.488 90 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS 19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 3HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Soil Listing (all nodes) Area (acres) Soil Group Subcatchment Numbers 0.000 HSG A 1.488 HSG B PR1, PR2 0.000 HSG C 0.000 HSG D 0.000 Other 1.488 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS 19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 4HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Ground Covers (all nodes) HSG-A (acres) HSG-B (acres) HSG-C (acres) HSG-D (acres) Other (acres) Total (acres) Ground Cover Subcatchment Numbers 0.000 0.304 0.000 0.000 0.000 0.304 >75% Grass cover, Good PR1, PR2 0.000 1.184 0.000 0.000 0.000 1.184 Paved parking PR1, PR2 0.000 1.488 0.000 0.000 0.000 1.488 TOTAL AREA COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS 19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 5HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pipe Listing (all nodes) Line# Node Number In-Invert (feet) Out-Invert (feet) Length (feet) Slope (ft/ft) n Diam/Width (inches) Height (inches) Inside-Fill (inches) 1 1P 894.50 894.00 50.0 0.0100 0.013 12.0 0.0 0.0 COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 6HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=20,285 sf 43.27% Impervious Runoff Depth=1.03"Subcatchment PR1: PROPOSED DA 1 Tc=6.0 min CN=77 Runoff=0.86 cfs 0.040 af Runoff Area=44,516 sf 96.09% Impervious Runoff Depth=2.60"Subcatchment PR2: PROPOSED DA 2 Tc=6.0 min CN=97 Runoff=4.17 cfs 0.221 af Peak Elev=898.39' Storage=5,779 cf Inflow=4.17 cfs 0.221 afPond 1P: UNDERGROUND FILT BASIN 1 Outflow=0.13 cfs 0.221 af Total Runoff Area = 1.488 ac Runoff Volume = 0.261 af Average Runoff Depth = 2.11" 20.44% Pervious = 0.304 ac 79.56% Impervious = 1.184 ac COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 7HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PROPOSED DA 1 Runoff = 0.86 cfs @ 11.98 hrs, Volume= 0.040 af, Depth= 1.03" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 8,777 98 Paved parking, HSG B 11,508 61 >75% Grass cover, Good, HSG B 20,285 77 Weighted Average 11,508 56.73% Pervious Area 8,777 43.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR1: PROPOSED DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.05 0 Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Runoff Area=20,285 sf Runoff Volume=0.040 af Runoff Depth=1.03" Tc=6.0 min CN=77 0.86 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 8HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PROPOSED DA 2 Runoff = 4.17 cfs @ 11.97 hrs, Volume= 0.221 af, Depth= 2.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Area (sf) CN Description 42,777 98 Paved parking, HSG B 1,739 61 >75% Grass cover, Good, HSG B 44,516 97 Weighted Average 1,739 3.91% Pervious Area 42,777 96.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR2: PROPOSED DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Type II 24-hr 2y 24hr AT-14 Rainfall=2.94" Runoff Area=44,516 sf Runoff Volume=0.221 af Runoff Depth=2.60" Tc=6.0 min CN=97 4.17 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 9HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: UNDERGROUND FILT BASIN 1 Inflow Area = 1.022 ac, 96.09% Impervious, Inflow Depth = 2.60" for 2y 24hr AT-14 event Inflow =4.17 cfs @ 11.97 hrs, Volume= 0.221 af Outflow = 0.13 cfs @ 13.80 hrs, Volume= 0.221 af, Atten= 97%, Lag= 109.9 min Primary = 0.13 cfs @ 13.80 hrs, Volume= 0.221 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 898.39' @ 13.80 hrs Surf.Area= 3,080 sf Storage= 5,779 cf Plug-Flow detention time= 826.4 min calculated for 0.221 af (100% of inflow) Center-of-Mass det. time= 826.5 min ( 1,591.1 - 764.6 ) Volume Invert Avail.Storage Storage Description #1A 895.50' 4,632 cf 35.00'W x 88.00'L x 7.00'H Field A 21,560 cf Overall - 9,981 cf Embedded = 11,579 cf x 40.0% Voids #2A 896.00' 9,981 cf CMP Round 72 x 16 Inside #1 Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 4 Rows of 4 Chambers 33.00' Header x 28.27 sf x 1 = 933.1 cf Inside 14,613 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 894.50'12.0" Round Culvert L= 50.0' RCP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 894.50' / 894.00' S= 0.0100 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #2 Device 1 894.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 2 895.50'0.800 in/hr Exfiltration over Surface area #4 Device 1 898.25'9.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.13 cfs @ 13.80 hrs HW=898.39' (Free Discharge) 1=Culvert (Passes 0.13 cfs of 6.14 cfs potential flow) 2=Orifice/Grate (Passes 0.06 cfs of 1.80 cfs potential flow) 3=Exfiltration (Exfiltration Controls 0.06 cfs) 4=Orifice/Grate (Orifice Controls 0.07 cfs @ 1.26 fps) COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 10HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 - Chamber Wizard Field A Chamber Model = CMP Round 72 (Round Corrugated Metal Pipe) Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 72.0" Wide + 36.0" Spacing = 108.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +6.00' Header x 1 = 86.00' Row Length +12.0" End Stone x 2 = 88.00' Base Length 4 Rows x 72.0" Wide + 36.0" Spacing x 3 + 12.0" Side Stone x 2 = 35.00' Base Width 6.0" Base + 72.0" Chamber Height + 6.0" Cover = 7.00' Field Height 16 Chambers x 565.5 cf + 33.00' Header x 28.27 sf = 9,980.8 cf Chamber Storage 21,560.0 cf Field - 9,980.8 cf Chambers = 11,579.2 cf Stone x 40.0% Voids = 4,631.7 cf Stone Storage Chamber Storage + Stone Storage = 14,612.5 cf = 0.335 af Overall Storage Efficiency = 67.8% Overall System Size = 88.00' x 35.00' x 7.00' 16 Chambers 798.5 cy Field 428.9 cy Stone COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 11HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 InflowPrimary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Inflow Area=1.022 ac Peak Elev=898.39' Storage=5,779 cf 4.17 cfs 0.13 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 2y 24hr AT-14 Rainfall=2.94"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 12HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Stage-Discharge for Pond 1P: UNDERGROUND FILT BASIN 1 Elevation (feet) Primary (cfs) 895.50 0.00 895.54 0.06 895.58 0.06 895.62 0.06 895.66 0.06 895.70 0.06 895.74 0.06 895.78 0.06 895.82 0.06 895.86 0.06 895.90 0.06 895.94 0.06 895.98 0.06 896.02 0.06 896.06 0.06 896.10 0.06 896.14 0.06 896.18 0.06 896.22 0.06 896.26 0.06 896.30 0.06 896.34 0.06 896.38 0.06 896.42 0.06 896.46 0.06 896.50 0.06 896.54 0.06 896.58 0.06 896.62 0.06 896.66 0.06 896.70 0.06 896.74 0.06 896.78 0.06 896.82 0.06 896.86 0.06 896.90 0.06 896.94 0.06 896.98 0.06 897.02 0.06 897.06 0.06 897.10 0.06 897.14 0.06 897.18 0.06 897.22 0.06 897.26 0.06 897.30 0.06 897.34 0.06 897.38 0.06 897.42 0.06 897.46 0.06 897.50 0.06 Elevation (feet) Primary (cfs) 897.54 0.06 897.58 0.06 897.62 0.06 897.66 0.06 897.70 0.06 897.74 0.06 897.78 0.06 897.82 0.06 897.86 0.06 897.90 0.06 897.94 0.06 897.98 0.06 898.02 0.06 898.06 0.06 898.10 0.06 898.14 0.06 898.18 0.06 898.22 0.06 898.26 0.06 898.30 0.07 898.34 0.09 898.38 0.12 898.42 0.16 898.46 0.22 898.50 0.28 898.54 0.35 898.58 0.42 898.62 0.51 898.66 0.60 898.70 0.69 898.74 0.79 898.78 0.88 898.82 0.98 898.86 1.08 898.90 1.17 898.94 1.26 898.98 1.33 899.02 1.39 899.06 1.46 899.10 1.52 899.14 1.58 899.18 1.64 899.22 1.70 899.26 1.75 899.30 1.80 899.34 1.86 899.38 1.91 899.42 1.95 899.46 2.00 899.50 2.05 899.54 2.09 Elevation (feet) Primary (cfs) 899.58 2.14 899.62 2.18 899.66 2.22 899.70 2.26 899.74 2.30 899.78 2.34 899.82 2.38 899.86 2.42 899.90 2.46 899.94 2.50 899.98 2.53 900.02 2.57 900.06 2.61 900.10 2.64 900.14 2.68 900.18 2.71 900.22 2.74 900.26 2.78 900.30 2.81 900.34 2.84 900.38 2.88 900.42 2.91 900.46 2.94 900.50 2.97 900.54 3.00 900.58 3.03 900.62 3.06 900.66 3.09 900.70 3.12 900.74 3.15 900.78 3.18 900.82 3.21 900.86 3.24 900.90 3.27 900.94 3.29 900.98 3.32 901.02 3.35 901.06 3.38 901.10 3.40 901.14 3.43 901.18 3.46 901.22 3.48 901.26 3.51 901.30 3.54 901.34 3.56 901.38 3.59 901.42 3.61 901.46 3.64 901.50 3.66 901.54 3.69 901.58 3.71 Elevation (feet) Primary (cfs) 901.62 3.74 901.66 3.76 901.70 3.79 901.74 3.81 901.78 3.84 901.82 3.86 901.86 3.88 901.90 3.91 901.94 3.93 901.98 3.95 902.02 3.98 902.06 4.00 902.10 4.02 902.14 4.05 902.18 4.07 902.22 4.09 902.26 4.11 902.30 4.13 902.34 4.16 902.38 4.18 902.42 4.20 902.46 4.22 902.50 4.24 COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 13HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=20,285 sf 43.27% Impervious Runoff Depth=2.19"Subcatchment PR1: PROPOSED DA 1 Tc=6.0 min CN=77 Runoff=1.82 cfs 0.085 af Runoff Area=44,516 sf 96.09% Impervious Runoff Depth=4.12"Subcatchment PR2: PROPOSED DA 2 Tc=6.0 min CN=97 Runoff=6.44 cfs 0.351 af Peak Elev=899.07' Storage=7,471 cf Inflow=6.44 cfs 0.351 afPond 1P: UNDERGROUND FILT BASIN 1 Outflow=1.47 cfs 0.351 af Total Runoff Area = 1.488 ac Runoff Volume = 0.436 af Average Runoff Depth = 3.51" 20.44% Pervious = 0.304 ac 79.56% Impervious = 1.184 ac COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 14HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PROPOSED DA 1 Runoff = 1.82 cfs @ 11.97 hrs, Volume= 0.085 af, Depth= 2.19" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Area (sf) CN Description 8,777 98 Paved parking, HSG B 11,508 61 >75% Grass cover, Good, HSG B 20,285 77 Weighted Average 11,508 56.73% Pervious Area 8,777 43.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR1: PROPOSED DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)2 1 0 Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Runoff Area=20,285 sf Runoff Volume=0.085 af Runoff Depth=2.19" Tc=6.0 min CN=77 1.82 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 15HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PROPOSED DA 2 Runoff = 6.44 cfs @ 11.97 hrs, Volume= 0.351 af, Depth= 4.12" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Area (sf) CN Description 42,777 98 Paved parking, HSG B 1,739 61 >75% Grass cover, Good, HSG B 44,516 97 Weighted Average 1,739 3.91% Pervious Area 42,777 96.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR2: PROPOSED DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Type II 24-hr 10y 24hr AT-14 Rainfall=4.47" Runoff Area=44,516 sf Runoff Volume=0.351 af Runoff Depth=4.12" Tc=6.0 min CN=97 6.44 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 16HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: UNDERGROUND FILT BASIN 1 Inflow Area = 1.022 ac, 96.09% Impervious, Inflow Depth = 4.12" for 10y 24hr AT-14 event Inflow =6.44 cfs @ 11.97 hrs, Volume= 0.351 af Outflow = 1.47 cfs @ 12.12 hrs, Volume= 0.351 af, Atten= 77%, Lag= 8.9 min Primary = 1.47 cfs @ 12.12 hrs, Volume= 0.351 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 899.07' @ 12.12 hrs Surf.Area= 3,080 sf Storage= 7,471 cf Plug-Flow detention time= 579.1 min calculated for 0.351 af (100% of inflow) Center-of-Mass det. time= 579.1 min ( 1,333.4 - 754.3 ) Volume Invert Avail.Storage Storage Description #1A 895.50' 4,632 cf 35.00'W x 88.00'L x 7.00'H Field A 21,560 cf Overall - 9,981 cf Embedded = 11,579 cf x 40.0% Voids #2A 896.00' 9,981 cf CMP Round 72 x 16 Inside #1 Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 4 Rows of 4 Chambers 33.00' Header x 28.27 sf x 1 = 933.1 cf Inside 14,613 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 894.50'12.0" Round Culvert L= 50.0' RCP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 894.50' / 894.00' S= 0.0100 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #2 Device 1 894.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 2 895.50'0.800 in/hr Exfiltration over Surface area #4 Device 1 898.25'9.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.47 cfs @ 12.12 hrs HW=899.07' (Free Discharge) 1=Culvert (Passes 1.47 cfs of 6.73 cfs potential flow) 2=Orifice/Grate (Passes 0.06 cfs of 1.96 cfs potential flow) 3=Exfiltration (Exfiltration Controls 0.06 cfs) 4=Orifice/Grate (Orifice Controls 1.41 cfs @ 3.20 fps) COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 17HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 - Chamber Wizard Field A Chamber Model = CMP Round 72 (Round Corrugated Metal Pipe) Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 72.0" Wide + 36.0" Spacing = 108.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +6.00' Header x 1 = 86.00' Row Length +12.0" End Stone x 2 = 88.00' Base Length 4 Rows x 72.0" Wide + 36.0" Spacing x 3 + 12.0" Side Stone x 2 = 35.00' Base Width 6.0" Base + 72.0" Chamber Height + 6.0" Cover = 7.00' Field Height 16 Chambers x 565.5 cf + 33.00' Header x 28.27 sf = 9,980.8 cf Chamber Storage 21,560.0 cf Field - 9,980.8 cf Chambers = 11,579.2 cf Stone x 40.0% Voids = 4,631.7 cf Stone Storage Chamber Storage + Stone Storage = 14,612.5 cf = 0.335 af Overall Storage Efficiency = 67.8% Overall System Size = 88.00' x 35.00' x 7.00' 16 Chambers 798.5 cy Field 428.9 cy Stone COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 18HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 InflowPrimary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)7 6 5 4 3 2 1 0 Inflow Area=1.022 ac Peak Elev=899.07' Storage=7,471 cf 6.44 cfs 1.47 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 10y 24hr AT-14 Rainfall=4.47"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 19HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Stage-Discharge for Pond 1P: UNDERGROUND FILT BASIN 1 Elevation (feet) Primary (cfs) 895.50 0.00 895.54 0.06 895.58 0.06 895.62 0.06 895.66 0.06 895.70 0.06 895.74 0.06 895.78 0.06 895.82 0.06 895.86 0.06 895.90 0.06 895.94 0.06 895.98 0.06 896.02 0.06 896.06 0.06 896.10 0.06 896.14 0.06 896.18 0.06 896.22 0.06 896.26 0.06 896.30 0.06 896.34 0.06 896.38 0.06 896.42 0.06 896.46 0.06 896.50 0.06 896.54 0.06 896.58 0.06 896.62 0.06 896.66 0.06 896.70 0.06 896.74 0.06 896.78 0.06 896.82 0.06 896.86 0.06 896.90 0.06 896.94 0.06 896.98 0.06 897.02 0.06 897.06 0.06 897.10 0.06 897.14 0.06 897.18 0.06 897.22 0.06 897.26 0.06 897.30 0.06 897.34 0.06 897.38 0.06 897.42 0.06 897.46 0.06 897.50 0.06 Elevation (feet) Primary (cfs) 897.54 0.06 897.58 0.06 897.62 0.06 897.66 0.06 897.70 0.06 897.74 0.06 897.78 0.06 897.82 0.06 897.86 0.06 897.90 0.06 897.94 0.06 897.98 0.06 898.02 0.06 898.06 0.06 898.10 0.06 898.14 0.06 898.18 0.06 898.22 0.06 898.26 0.06 898.30 0.07 898.34 0.09 898.38 0.12 898.42 0.16 898.46 0.22 898.50 0.28 898.54 0.35 898.58 0.42 898.62 0.51 898.66 0.60 898.70 0.69 898.74 0.79 898.78 0.88 898.82 0.98 898.86 1.08 898.90 1.17 898.94 1.26 898.98 1.33 899.02 1.39 899.06 1.46 899.10 1.52 899.14 1.58 899.18 1.64 899.22 1.70 899.26 1.75 899.30 1.80 899.34 1.86 899.38 1.91 899.42 1.95 899.46 2.00 899.50 2.05 899.54 2.09 Elevation (feet) Primary (cfs) 899.58 2.14 899.62 2.18 899.66 2.22 899.70 2.26 899.74 2.30 899.78 2.34 899.82 2.38 899.86 2.42 899.90 2.46 899.94 2.50 899.98 2.53 900.02 2.57 900.06 2.61 900.10 2.64 900.14 2.68 900.18 2.71 900.22 2.74 900.26 2.78 900.30 2.81 900.34 2.84 900.38 2.88 900.42 2.91 900.46 2.94 900.50 2.97 900.54 3.00 900.58 3.03 900.62 3.06 900.66 3.09 900.70 3.12 900.74 3.15 900.78 3.18 900.82 3.21 900.86 3.24 900.90 3.27 900.94 3.29 900.98 3.32 901.02 3.35 901.06 3.38 901.10 3.40 901.14 3.43 901.18 3.46 901.22 3.48 901.26 3.51 901.30 3.54 901.34 3.56 901.38 3.59 901.42 3.61 901.46 3.64 901.50 3.66 901.54 3.69 901.58 3.71 Elevation (feet) Primary (cfs) 901.62 3.74 901.66 3.76 901.70 3.79 901.74 3.81 901.78 3.84 901.82 3.86 901.86 3.88 901.90 3.91 901.94 3.93 901.98 3.95 902.02 3.98 902.06 4.00 902.10 4.02 902.14 4.05 902.18 4.07 902.22 4.09 902.26 4.11 902.30 4.13 902.34 4.16 902.38 4.18 902.42 4.20 902.46 4.22 902.50 4.24 COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 20HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Time span=0.00-240.00 hrs, dt=0.01 hrs, 24001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=20,285 sf 43.27% Impervious Runoff Depth=5.10"Subcatchment PR1: PROPOSED DA 1 Tc=6.0 min CN=77 Runoff=4.13 cfs 0.198 af Runoff Area=44,516 sf 96.09% Impervious Runoff Depth=7.45"Subcatchment PR2: PROPOSED DA 2 Tc=6.0 min CN=97 Runoff=11.36 cfs 0.635 af Peak Elev=901.30' Storage=12,737 cf Inflow=11.36 cfs 0.635 afPond 1P: UNDERGROUND FILT BASIN 1 Outflow=3.53 cfs 0.635 af Total Runoff Area = 1.488 ac Runoff Volume = 0.832 af Average Runoff Depth = 6.71" 20.44% Pervious = 0.304 ac 79.56% Impervious = 1.184 ac COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 21HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR1: PROPOSED DA 1 Runoff = 4.13 cfs @ 11.97 hrs, Volume= 0.198 af, Depth= 5.10" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Area (sf) CN Description 8,777 98 Paved parking, HSG B 11,508 61 >75% Grass cover, Good, HSG B 20,285 77 Weighted Average 11,508 56.73% Pervious Area 8,777 43.27% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR1: PROPOSED DA 1 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)4 3 2 1 0 Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Runoff Area=20,285 sf Runoff Volume=0.198 af Runoff Depth=5.10" Tc=6.0 min CN=77 4.13 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 22HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Subcatchment PR2: PROPOSED DA 2 Runoff = 11.36 cfs @ 11.97 hrs, Volume= 0.635 af, Depth= 7.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Area (sf) CN Description 42,777 98 Paved parking, HSG B 1,739 61 >75% Grass cover, Good, HSG B 44,516 97 Weighted Average 1,739 3.91% Pervious Area 42,777 96.09% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Subcatchment PR2: PROPOSED DA 2 Runoff Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 100y 24hr AT-14 Rainfall=7.81" Runoff Area=44,516 sf Runoff Volume=0.635 af Runoff Depth=7.45" Tc=6.0 min CN=97 11.36 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 23HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Summary for Pond 1P: UNDERGROUND FILT BASIN 1 Inflow Area = 1.022 ac, 96.09% Impervious, Inflow Depth = 7.45" for 100y 24hr AT-14 event Inflow =11.36 cfs @ 11.97 hrs, Volume= 0.635 af Outflow = 3.53 cfs @ 12.09 hrs, Volume= 0.635 af, Atten= 69%, Lag= 7.4 min Primary = 3.53 cfs @ 12.09 hrs, Volume= 0.635 af Routing by Stor-Ind method, Time Span= 0.00-240.00 hrs, dt= 0.01 hrs Peak Elev= 901.30' @ 12.09 hrs Surf.Area= 3,080 sf Storage= 12,737 cf Plug-Flow detention time= 363.0 min calculated for 0.634 af (100% of inflow) Center-of-Mass det. time= 363.0 min ( 1,106.4 - 743.4 ) Volume Invert Avail.Storage Storage Description #1A 895.50' 4,632 cf 35.00'W x 88.00'L x 7.00'H Field A 21,560 cf Overall - 9,981 cf Embedded = 11,579 cf x 40.0% Voids #2A 896.00' 9,981 cf CMP Round 72 x 16 Inside #1 Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 4 Rows of 4 Chambers 33.00' Header x 28.27 sf x 1 = 933.1 cf Inside 14,613 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Primary 894.50'12.0" Round Culvert L= 50.0' RCP, mitered to conform to fill, Ke= 0.700 Inlet / Outlet Invert= 894.50' / 894.00' S= 0.0100 '/' Cc= 0.900 n= 0.013 Corrugated PE, smooth interior, Flow Area= 0.79 sf #2 Device 1 894.50'6.0" Vert. Orifice/Grate C= 0.600 #3 Device 2 895.50'0.800 in/hr Exfiltration over Surface area #4 Device 1 898.25'9.0" Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=3.53 cfs @ 12.09 hrs HW=901.30' (Free Discharge) 1=Culvert (Passes 3.53 cfs of 8.37 cfs potential flow) 2=Orifice/Grate (Passes 0.06 cfs of 2.42 cfs potential flow) 3=Exfiltration (Exfiltration Controls 0.06 cfs) 4=Orifice/Grate (Orifice Controls 3.48 cfs @ 7.87 fps) COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 24HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 - Chamber Wizard Field A Chamber Model = CMP Round 72 (Round Corrugated Metal Pipe) Effective Size= 72.0"W x 72.0"H => 28.27 sf x 20.00'L = 565.5 cf Overall Size= 72.0"W x 72.0"H x 20.00'L 72.0" Wide + 36.0" Spacing = 108.0" C-C Row Spacing 4 Chambers/Row x 20.00' Long +6.00' Header x 1 = 86.00' Row Length +12.0" End Stone x 2 = 88.00' Base Length 4 Rows x 72.0" Wide + 36.0" Spacing x 3 + 12.0" Side Stone x 2 = 35.00' Base Width 6.0" Base + 72.0" Chamber Height + 6.0" Cover = 7.00' Field Height 16 Chambers x 565.5 cf + 33.00' Header x 28.27 sf = 9,980.8 cf Chamber Storage 21,560.0 cf Field - 9,980.8 cf Chambers = 11,579.2 cf Stone x 40.0% Voids = 4,631.7 cf Stone Storage Chamber Storage + Stone Storage = 14,612.5 cf = 0.335 af Overall Storage Efficiency = 67.8% Overall System Size = 88.00' x 35.00' x 7.00' 16 Chambers 798.5 cy Field 428.9 cy Stone COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 25HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Pond 1P: UNDERGROUND FILT BASIN 1 InflowPrimary Hydrograph Time (hours) 2402302202102001901801701601501401301201101009080706050403020100Flow (cfs)12 11 10 9 8 7 6 5 4 3 2 1 0 Inflow Area=1.022 ac Peak Elev=901.30' Storage=12,737 cf 11.36 cfs 3.53 cfs COLUMBIA HEIGHTS SENIOR LIVING - PROPOSED CONDITIONS Type II 24-hr 100y 24hr AT-14 Rainfall=7.81"19243-COLUMBIA HEIGHTS PROPOSED Printed 8/5/2019Prepared by {enter your company name here} Page 26HydroCAD® 10.00-20 s/n 02202 © 2017 HydroCAD Software Solutions LLC Stage-Discharge for Pond 1P: UNDERGROUND FILT BASIN 1 Elevation (feet) Primary (cfs) 895.50 0.00 895.54 0.06 895.58 0.06 895.62 0.06 895.66 0.06 895.70 0.06 895.74 0.06 895.78 0.06 895.82 0.06 895.86 0.06 895.90 0.06 895.94 0.06 895.98 0.06 896.02 0.06 896.06 0.06 896.10 0.06 896.14 0.06 896.18 0.06 896.22 0.06 896.26 0.06 896.30 0.06 896.34 0.06 896.38 0.06 896.42 0.06 896.46 0.06 896.50 0.06 896.54 0.06 896.58 0.06 896.62 0.06 896.66 0.06 896.70 0.06 896.74 0.06 896.78 0.06 896.82 0.06 896.86 0.06 896.90 0.06 896.94 0.06 896.98 0.06 897.02 0.06 897.06 0.06 897.10 0.06 897.14 0.06 897.18 0.06 897.22 0.06 897.26 0.06 897.30 0.06 897.34 0.06 897.38 0.06 897.42 0.06 897.46 0.06 897.50 0.06 Elevation (feet) Primary (cfs) 897.54 0.06 897.58 0.06 897.62 0.06 897.66 0.06 897.70 0.06 897.74 0.06 897.78 0.06 897.82 0.06 897.86 0.06 897.90 0.06 897.94 0.06 897.98 0.06 898.02 0.06 898.06 0.06 898.10 0.06 898.14 0.06 898.18 0.06 898.22 0.06 898.26 0.06 898.30 0.07 898.34 0.09 898.38 0.12 898.42 0.16 898.46 0.22 898.50 0.28 898.54 0.35 898.58 0.42 898.62 0.51 898.66 0.60 898.70 0.69 898.74 0.79 898.78 0.88 898.82 0.98 898.86 1.08 898.90 1.17 898.94 1.26 898.98 1.33 899.02 1.39 899.06 1.46 899.10 1.52 899.14 1.58 899.18 1.64 899.22 1.70 899.26 1.75 899.30 1.80 899.34 1.86 899.38 1.91 899.42 1.95 899.46 2.00 899.50 2.05 899.54 2.09 Elevation (feet) Primary (cfs) 899.58 2.14 899.62 2.18 899.66 2.22 899.70 2.26 899.74 2.30 899.78 2.34 899.82 2.38 899.86 2.42 899.90 2.46 899.94 2.50 899.98 2.53 900.02 2.57 900.06 2.61 900.10 2.64 900.14 2.68 900.18 2.71 900.22 2.74 900.26 2.78 900.30 2.81 900.34 2.84 900.38 2.88 900.42 2.91 900.46 2.94 900.50 2.97 900.54 3.00 900.58 3.03 900.62 3.06 900.66 3.09 900.70 3.12 900.74 3.15 900.78 3.18 900.82 3.21 900.86 3.24 900.90 3.27 900.94 3.29 900.98 3.32 901.02 3.35 901.06 3.38 901.10 3.40 901.14 3.43 901.18 3.46 901.22 3.48 901.26 3.51 901.30 3.54 901.34 3.56 901.38 3.59 901.42 3.61 901.46 3.64 901.50 3.66 901.54 3.69 901.58 3.71 Elevation (feet) Primary (cfs) 901.62 3.74 901.66 3.76 901.70 3.79 901.74 3.81 901.78 3.84 901.82 3.86 901.86 3.88 901.90 3.91 901.94 3.93 901.98 3.95 902.02 3.98 902.06 4.00 902.10 4.02 902.14 4.05 902.18 4.07 902.22 4.09 902.26 4.11 902.30 4.13 902.34 4.16 902.38 4.18 902.42 4.20 902.46 4.22 902.50 4.24 Tollberg HomesRosa Architectural GroupProposed Columbia HeightsSenior Living FacilityJune 2019Perspective Image looking Southwest Tollberg HomesRosa Architectural GroupProposed Columbia HeightsSenior Living FacilityJune 2019Perspective Image looking Southeast Tollberg HomesRosa Architectural GroupProposed Columbia HeightsSenior Living FacilityJune 2019Perspective Image looking Northwest 36' - 3 5/8" EAVE46' - 3 7/16" MIDPOINT55' - 5 7/16" RIDGE32' - 7 13/16" EAVE41' - 11 9/32" MIDPOINT50' - 4 31/32" RIDGETollberg HomesRosa Architectural GroupProposed Columbia HeightsSenior Living FacilityAugust 2019West Building Elevation with Building Height Data Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:31 PMREVISION SUMMARYDATEDESCRIPTIONC0.0TITLE SHEET. .. .. .. .. .. .COLUMBIA HEIGHTS SENIOR LIVINGCOLUMBIA HEIGHTS, MINNESOTASHEET INDEXSHEET NUMBER SHEET TITLEC0.0 TITLE SHEETSITE SURVEYV1.0UTILITY PLANC4.0ISSUED FOR: CITY RESUBMITTALMASTER LEGEND:EX. 1' CONTOUR ELEVATION INTERVALCURB AND GUTTER (T.O = TIP OUT)SPOT GRADE ELEVATION (GUTTER/FLOW LINEUNLESS OTHERWISE NOTED)SPOT GRADE ELEVATION TOP OF CURB (GUTTER TOP)SPOT GRADE ELEVATION TOP OF WALLSOIL BORING LOCATIONSPOT GRADE ELEVATION BOTTOM OF WALLEMERGENCY OVERFLOWPROPOSED MANHOLE STORMPROPOSED GATE VALVEPROPOSED SANITARY SEWERPROPOSED STORM SEWERPROPOSED WATER MAINPROPOSED FIRE HYDRANTEXISTING LIGHTEXISTING GAS METEREXISTING MANHOLEEXISTING CATCH BASINEXISTING GATE VALVEEXISTING HYDRANTEXISTING GAS VALVEEXISTING ELECTRIC BOXEXISTING STOPBOXPROPOSED MANHOLE SANITARYPROPOSED CATCH BASIN OR CATCH BASIN MANHOLE STORMPROPOSED SIGNEXISTING SPOT GRADE ELEVATIONINLET PROTECTIONSTABILIZED CONSTRUCTION ENTRANCEDRAINAGE ARROWSWPPP - EXISTING CONDITIONSSW1.0GRADING PLANC3.0C5.0C5.1L1.0CIVIL DETAILSLANDSCAPE PLANSWPPP - PROPOSED CONDITIONSSW1.1SWPPP - DETAILSSW1.2C2.0 SITE PLANSWPPP - NARRATIVESW1.3CIVIL DETAILSC1.0 REMOVALS PLANC5.2 CIVIL DETAILSKnow what'sbelow.before you dig.CallRSWPPP - ATTACHMENTSSW1.4SWPPP - ATTACHMENTSSW1.5L1.1LANDSCAPE PLAN NOTES & DETAILSDYH EOF=1135.52SB-1TOPROPOSED LIGHTEXISTING SANITARY SEWEREXISTING STORM SEWEREXISTING WATER MAINEXISTING GAS MAINEXISTING UNDERGROUND ELECTRICEXISTING UNDERGROUND CABLE1.0' CONTOUR ELEVATION INTERVALSILT FENCE / BIOROLL - GRADING LIMITDEVELOPER / PROPERTY OWNER:TOLLBERG HOMES1428 5TH AVENUEANOKA, MN 55303763-205-2037ENGINEER / LANDSCAPE ARCHITECT:CIVIL SITE GROUP4931 W 35TH STREETSUITE 200ST LOUIS PARK, MN 55416612-615-0060SURVEYOR:GEOTECHNICAL ENGINEER:RLK KUUSISTO LTD.6110 BLUE CIRCLE DR.SUITE #100MINNETONKA, MN 55343952-933-0972TBDARCHITECT:ROSA ARCHITECTURAL GROUP, INC.1084 STERLING STREETST. PAUL, MN 55119651-739-7988SITE LOCATIONSITE LOCATION MAPNPRELIMINARY PLATV1.1 1 CONSTRUCTION LIMITSCONSTRUCTION LIMITSEXISTING SIDEWALK TO REMAIN,PROTECT FROM DAMAGEDURING CONSTRUCTION, TYP.REMOVE EXISTINGCURB ANDGUTTER, TYP.RELOCATE EXISTING ELECTRICMETER, COORD. W/ UTILITY COMPANYSALVAGE EXISTING STREETSIGNS, COORD. W/ OWNERRELOCATE EXISTINGTELEPHONE PEDESTAL,COORD. W/ UTILITY COMPANYSALVAGE EXISTINGSTREET SIGNS,COORD. W/ OWNEREXISTING POWER POLE & LEADWIRE TO REMAIN, PROTECTDURING CONSTRUCTION,COORD. W/ UTILITY COMPANY.SALVAGE EXISTING STREETSIGNS, COORD. W/ OWNERSALVAGE EXISTING STREETSIGN, COORD. W/ OWNEREXISTING OVERHEAD LIGHTPOLES TO REMAIN, PROTECTDURING CONSTRUCTION,COORD. W/ OWNER.EXISTING OVERHEAD LIGHTPOLE TO REMAIN, PROTECTDURING CONSTRUCTION,COORD. W/ OWNER.EXISTING TREES TOREMAIN, PROVIDETREE PROTECTIONFENCING, TYP.EXISTING TREES TOREMAIN, PROVIDETREE PROTECTIONFENCING, TYP.SALVAGEHYDRANT & GATEVALVE AND BOXREMOVE EXISTING PAVEMENT ANDBASE MATERIAL FOR PROPOSEDUTILITY CONSTRUCTION, TYP.REMOVE EXISTING PAVEMENT ANDBASE MATERIAL FOR PROPOSEDUTILITY CONSTRUCTION, TYP.REMOVE EXISTINGLANDSCAPE ROCK, TYP.REMOVALS LEGEND:TREE PROTECTIONREMOVAL OF PAVEMENT AND ALL BASE MATERIAL,INCLUDING BIT., CONC., AND GRAVEL PVMTS.REMOVAL OF STRUCTURE INCLUDING ALLFOOTINGS AND FOUNDATIONS.TREE REMOVAL - INCLUDING ROOTS AND STUMPSCivil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:31 PM01" = 20'-0"20'-0"10'-0"NREVISION SUMMARYDATEDESCRIPTIONC1.0REMOVALS PLAN. .. .. .. .. .. .Know what'sbelow.before you dig.CallREX. 1' CONTOUR ELEVATION INTERVALREMOVE CURB AND GUTTER. IF IN RIGHT-OF-WAY,COORDINATE WITH LOCAL GOVERNING UNIT.REMOVAL NOTES:1.SEE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) PLAN FOR CONSTRUCTION STORM WATERMANAGEMENT PLAN.2.REMOVAL OF MATERIALS NOTED ON THE DRAWINGS SHALL BE IN ACCORDANCE WITH MNDOT, STATE ANDLOCAL REGULATIONS.3.REMOVAL OF PRIVATE UTILITIES SHALL BE COORDINATED WITH UTILITY OWNER PRIOR TO CONSTRUCTIONACTIVITIES.4.EXISTING PAVEMENTS SHALL BE SAWCUT IN LOCATIONS AS SHOWN ON THE DRAWINGS OR THE NEARESTJOINT FOR PROPOSED PAVEMENT CONNECTIONS.5.REMOVED MATERIALS SHALL BE DISPOSED OF TO A LEGAL OFF-SITE LOCATION AND IN ACCORDANCE WITHSTATE AND LOCAL REGULATIONS.6.ABANDON, REMOVAL, CONNECTION, AND PROTECTION NOTES SHOWN ON THE DRAWINGS AREAPPROXIMATE. COORDINATE WITH PROPOSED PLANS.7.EXISTING ON-SITE FEATURES NOT NOTED FOR REMOVAL SHALL BE PROTECTED THROUGHOUT THEDURATION OF THE CONTRACT.8.PROPERTY LINES SHALL BE CONSIDERED GENERAL CONSTRUCTION LIMITS UNLESS OTHERWISE NOTED ONTHE DRAWINGS. WORK WITHIN THE GENERAL CONSTRUCTION LIMITS SHALL INCLUDE STAGING,DEMOLITION AND CLEAN-UP OPERATIONS AS WELL AS CONSTRUCTION SHOWN ON THE DRAWINGS.9.MINOR WORK OUTSIDE OF THE GENERAL CONSTRUCTION LIMITS SHALL BE ALLOWED AS SHOWN ON THEPLAN AND PER CITY REQUIREMENTS.10.DAMAGE BEYOND THE PROPERTY LIMITS CAUSED BY CONSTRUCTION ACTIVITY SHALL BE REPAIRED IN AMANNER APPROVED BY THE ENGINEER/LANDSCAPE ARCHITECT OR IN ACCORDANCE WITH THE CITY.11.PROPOSED WORK (BUILDING AND CIVIL) SHALL NOT DISTURB EXISTING UTILITIES UNLESS OTHERWISESHOWN ON THE DRAWINGS AND APPROVED BY THE CITY PRIOR TO CONSTRUCTION.12.SITE SECURITY MAY BE NECESSARY AND PROVIDED IN A MANNER TO PROHIBIT VANDALISM, AND THEFT,DURING AND AFTER NORMAL WORK HOURS, THROUGHOUT THE DURATION OF THE CONTRACT. SECURITYMATERIALS SHALL BE IN ACCORDANCE WITH THE CITY.13.VEHICULAR ACCESS TO THE SITE SHALL BE MAINTAINED FOR DELIVERY AND INSPECTION ACCESS DURINGNORMAL OPERATING HOURS. AT NO POINT THROUGHOUT THE DURATION OF THE CONTRACT SHALLCIRCULATION OF ADJACENT STREETS BE BLOCKED WITHOUT APPROVAL BY THE CITY PRIOR TOCONSTRUCTION ACTIVITIES.14.ALL TRAFFIC CONTROLS SHALL BE PROVIDED AND ESTABLISHED PER THE REQUIREMENTS OF THEMINNESOTA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MMUTCD) AND THE CITY. THIS SHALLINCLUDE, BUT NOT BE LIMITED TO, SIGNAGE, BARRICADES, FLASHERS, AND FLAGGERS AS NEEDED. ALLPUBLIC STREETS SHALL REMAIN OPEN TO TRAFFIC AT ALL TIMES. NO ROAD CLOSURES SHALL BEPERMITTED WITHOUT APPROVAL BY THE CITY.15.SHORING FOR BUILDING EXCAVATION MAY BE USED AT THE DISCRETION OF THE CONTRACTOR AND ASAPPROVED BY THE OWNERS REPRESENTATIVE AND THE CITY PRIOR TO CONSTRUCTION ACTIVITIES.16.STAGING, DEMOLITION, AND CLEAN-UP AREAS SHALL BE WITHIN THE PROPERTY LIMITS AS SHOWN ON THEDRAWINGS AND MAINTAINED IN A MANNER AS REQUIRED BY THE CITY.CITY OF COLUMBIA HEIGHTS REMOVAL NOTES:1.RESERVED FOR CITY SPECIFIC REMOVAL NOTES.SEE SWPPP ON SHEETS SW1.0-SW1.5EROSION CONTROL NOTES: S14° 5 8 ' 4 4 " W 3 3 1 . 1 2S89°58'32"W 159.71N00°01'28"W 319.94 S89°59'59"E 245.43112.82248.0 0 83.13 N07°01'24"E 5 1 . 2 1 N00°01'28"W 95.31 113.66Δ=60°51'43"R=107.00132.61R30.0'R10.0'R4.0'R4.0'R5.0'R5.0'R15.0'R15.0'R3.0'R3.0'ACCESSIBLE PARKINGSPACE, INCL. SIGNAGE,STRIPING AND RAMPSPED RAMP, SEEDETAILS, TYP.BIT. PVMT.,TYPMATCH EXISTING,TYP.MATCHEXISTINGPAVEMENT,TYP.MATCH EXISTINGSURMOUNTABLEC&G, TYP.MATCH EXISTINGSURMOUNTABLEC&G, TYP.5' CONC. WALK, TYPB612 C&G, TYP.BIT. PVMT.,TYPB612 C&G, TYP.CONC. WALK, TYPELEVATED PATIO, CONSTRUCTSEG. BLOCK RETAINING WALLAND CONCRETE SLAB. INSTALLRAIL ON TOP OF WALL, COORD.w/ OWNER FOR DETAILSELEVATED PATIO, CONSTRUCTSEG. BLOCK RETAINING WALLAND CONCRETE SLAB. INSTALLRAIL ON TOP OF WALL, COORD.w/ OWNER FOR DETAILSRETAINING WALL, SEE GRADINGPLAN C3.0 FOR ELEVATIONS, COORD.w/ OWNER/ARCH FOR DETAILS PRIORTO CONSTRUCTION, TYP.PROPERTY LINE, TYP.4 STALLS @9'=36.0'19 STALLS @ 9'=171.0'9 STALLS @ 9'=90.0'2 STALLS & 1 ACCAISLE @ 9'=27.0'14.1'10.0'11.2'20.0'5.0'10.5'RETAINING WALLSETBACK16.7'6.0'8.0'8.5'BUILDINGSETBACK14.6'BUILDINGSETBACK74.0'18.0'9.3'142.0'18.0'TYP.24.0'18.0'10.0'6.7'82.0'12.2'2.1'ELEVATEDPATIO SETBACK6.7'18.0'TYP.24.0'18.0'TYP.2.7'37.0'2.7'23.2'2.0'RETAINING WALLSETABCK180.3'30.0'8.0'21.1'BUILDINGSETBACK21.1'14.6'2 . 1 'BUI LD ING SE TB ACK5.8'ELEVATED PATIOSETBACK4.5'PARKINGSETBACK13.9'PARKINGSETBACKD&U EASEMENTLINE, TYP.D&U EASEMENTLINE, TYP.D&U EASEMENTLINE, TYP.D&U EASEMENTLINE, TYP.Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:31 PMREVISION SUMMARYDATEDESCRIPTIONC2.0SITE PLAN. .. .. .. .. .. .SITE AREA TABLE:1.CONTRACTOR SHALL VERIFY LOCATIONS AND LAYOUT OF ALL SITE ELEMENTS PRIOR TO BEGINNING CONSTRUCTION, INCLUDING BUTNOT LIMITED TO, LOCATIONS OF EXISTING AND PROPOSED PROPERTY LINES, EASEMENTS, SETBACKS, UTILITIES, BUILDINGS ANDPAVEMENTS. CONTRACTOR IS RESPONSIBLE FOR FINAL LOCATIONS OF ALL ELEMENTS FOR THE SITE. ANY REVISIONS REQUIRED AFTERCOMMENCEMENT OF CONSTRUCTION, DUE TO LOCATIONAL ADJUSTMENTS SHALL BE CORRECTED AT NO ADDITIONAL COST TO OWNER.ADJUSTMENTS TO THE LAYOUT SHALL BE APPROVED BY THE ENGINEER/LANDSCAPE ARCHITECT PRIOR TO INSTALLATION OF MATERIALS.STAKE LAYOUT FOR APPROVAL.2.THE CONTRACTOR SHALL OBTAIN ALL NECESSARY PERMITS PRIOR TO CONSTRUCTION, INCLUDING A RIGHT-OF-WAY AND STREETOPENING PERMIT.3.THE CONTRACTOR SHALL VERIFY RECOMMENDATIONS NOTED IN THE GEO TECHNICAL REPORT PRIOR TO INSTALLATION OF SITEIMPROVEMENT MATERIALS.4.CONTRACTOR SHALL FIELD VERIFY COORDINATES AND LOCATION DIMENSIONS OF THE BUILDING AND STAKE FOR REVIEW ANDAPPROVAL BY THE OWNERS REPRESENTATIVE PRIOR TO INSTALLATION OF FOOTING MATERIALS.5.LOCATIONS OF STRUCTURES, ROADWAY PAVEMENTS, CURBS AND GUTTERS, BOLLARDS, AND WALKS ARE APPROXIMATE AND SHALL BESTAKED IN THE FIELD, PRIOR TO INSTALLATION, FOR REVIEW AND APPROVAL BY THE ENGINEER/LANDSCAPE ARCHITECT.6.CURB DIMENSIONS SHOWN ARE TO FACE OF CURB. BUILDING DIMENSIONS ARE TO FACE OF CONCRETE FOUNDATION. LOCATION OFBUILDING IS TO BUILDING FOUNDATION AND SHALL BE AS SHOWN ON THE DRAWINGS.7.THE CONTRACTOR SHALL SUBMIT SHOP DRAWINGS OR SAMPLES AS SPECIFIED FOR REVIEW AND APPROVAL BY THEENGINEER/LANDSCAPE ARCHITECT PRIOR TO FABRICATION FOR ALL PREFABRICATED SITE IMPROVEMENT MATERIALS SUCH AS, BUTNOT LIMITED TO THE FOLLOWING, FURNISHINGS, PAVEMENTS, WALLS, RAILINGS, BENCHES, FLAGPOLES, LANDING PADS FOR CURBRAMPS, AND LIGHT AND POLES. THE OWNER RESERVES THE RIGHT TO REJECT INSTALLED MATERIALS NOT PREVIOUSLY APPROVED.8.PEDESTRIAN CURB RAMPS SHALL BE CONSTRUCTED WITH TRUNCATED DOME LANDING AREAS IN ACCORDANCE WITH A.D.A.REQUIREMENTS-SEE DETAIL.9.CROSSWALK STRIPING SHALL BE 24" WIDE WHITE PAINTED LINE, SPACED 48" ON CENTER PERPENDICULAR TO THE FLOW OF TRAFFIC.WIDTH OF CROSSWALK SHALL BE 5' WIDE. ALL OTHER PAVEMENT MARKINGS SHALL BE WHITE IN COLOR UNLESS OTHERWISE NOTED ORREQUIRED BY ADA OR LOCAL GOVERNING BODIES.10.SEE SITE PLAN FOR CURB AND GUTTER TYPE. TAPER BETWEEN CURB TYPES-SEE DETAIL.11.ALL CURB RADII ARE MINIMUM 3' UNLESS OTHERWISE NOTED.12.CONTRACTOR SHALL REFER TO FINAL PLAT FOR LOT BOUNDARIES, NUMBERS, AREAS AND DIMENSIONS PRIOR TO SITE IMPROVEMENTS.13.FIELD VERIFY ALL EXISTING SITE CONDITIONS, DIMENSIONS.14.PARKING IS TO BE SET PARALLEL OR PERPENDICULAR TO EXISTING BUILDING UNLESS NOTED OTHERWISE.15.ALL PARKING LOT PAINT STRIPPING TO BE WHITE, 4" WIDE TYP.16.BITUMINOUS PAVING TO BE "LIGHT DUTY" UNLESS OTHERWISE NOTED. SEE DETAIL SHEETS FOR PAVEMENT SECTIONS.17.ALL TREES THAT ARE TO REMAIN ARE TO BE PROTECTED FROM DAMAGE WITH A CONSTRUCTION FENCE AT THE DRIP LINE. SEELANDSCAPE DOCUMENTS.SITE LAYOUT NOTES:SITE PLAN LEGEND:TRAFFIC DIRECTIONAL ARROW PAVEMENT MARKINGSCITY OF COLUMBIA HEIGHTS SITE SPECIFIC NOTES:SIGN AND POST ASSEMBLY. SHOP DRAWINGS REQUIRED.HC = ACCESSIBLE SIGNNP = NO PARKING FIRE LANEST = STOPCP = COMPACT CAR PARKING ONLY01" = 20'-0"20'-0"10'-0"N1.RESERVED FOR CITY SPECIFIC NOTES.Know what'sbelow.before you dig.CallRCONCRETE PAVEMENT AS SPECIFIED (PAD OR WALK)SEE GEOTECHNICAL REPORT FOR AGGREGATE BASE& CONCRETE DEPTHS, SEE DETAIL.PROPERTY LINECURB AND GUTTER-SEE NOTES (T.O.) TIP OUTGUTTER WHERE APPLICABLE-SEE PLANLIGHT DUTY BITUMINOUS PAVEMENT. SEEGEOTECHNICAL REPORT FOR AGGREGATE BASE &WEAR COURSE DEPTH, SEE DEATIL.CONSTRUCTION LIMITSTOOPERATIONAL NOTES:SNOW REMOVAL:ALL SNOW SHALL OCCUR IN LANDSCAPE AREAS.TRASH REMOVAL:TRASH REMOVAL SHALL OCCUR IN DESIGNATEDAREA.DELIVERIES:DELIVERIES SHALL OCCUR AT BUILDINGS MAINENTRY. COORDINATE DELIVERY COLLECTION W/ARCHITECT AND BUILDING OWNER. S14° 5 8 ' 4 4 " W 3 3 1 . 1 2S89°58'32"W 159.71N00°01'28"W 319.94 S89°59'59"E 245.43LOT 1BLOCK 1112.82248.0 0 83.13 N07°01'24"E 5 1 . 2 1 N00°01'28"W 95.31 113.66Δ=60°51'43"R=107.00132.61CONSTRUCTION LIMITSCONSTRUCTION LIMITSCivil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:31 PMREVISION SUMMARYDATEDESCRIPTIONC3.0GRADING PLAN. .. .. .. .. .. .1.SEE SITE PLAN FOR HORIZONTAL LAYOUT & GENERAL GRADING NOTES.2.THE CONTRACTOR SHALL COMPLETE THE SITE GRADING CONSTRUCTION (INCLUDING BUT NOTLIMITED TO SITE PREPARATION, SOIL CORRECTION, EXCAVATION, EMBANKMENT, ETC.) INACCORDANCE WITH THE REQUIREMENTS OF THE OWNER'S SOILS ENGINEER. ALL SOIL TESTINGSHALL BE COMPLETED BY THE OWNER'S SOILS ENGINEER. THE CONTRACTOR SHALL BERESPONSIBLE FOR COORDINATING ALL REQUIRED SOIL TESTS AND INSPECTIONS WITH THE SOILSENGINEER.3.GRADING AND EXCAVATION ACTIVITIES SHALL BE PERFORMED IN ACCORDANCE WITH THENATIONAL POLLUTION DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT REQUIREMENTS &PERMIT REQUIREMENTS OF THE CITY.4.PROPOSED SPOT GRADES ARE FLOW-LINE FINISHED GRADE ELEVATIONS, UNLESS OTHERWISENOTED.5.GRADES OF WALKS SHALL BE INSTALLED WITH 5% MAX. LONGITUDINAL SLOPE AND 1% MIN. AND2% MAX. CROSS SLOPE, UNLESS OTHERWISE NOTED.6.PROPOSED SLOPES SHALL NOT EXCEED 3:1 UNLESS INDICATED OTHERWISE ON THE DRAWINGS.MAXIMUM SLOPES IN MAINTAINED AREAS IS 4:17.PROPOSED RETAINING WALLS, FREESTANDING WALLS, OR COMBINATION OF WALL TYPESGREATER THAN 4' IN HEIGHT SHALL BE DESIGNED AND ENGINEERED BY A REGISTERED RETAININGWALL ENGINEER. DESIGN DRAWINGS SHALL BE SUBMITTED FOR REVIEW AND APPROVAL PRIOR TOCONSTRUCTION.8.THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTENANCE OF GRADE STAKES THROUGHOUTTHE DURATION OF CONSTRUCTION TO ESTABLISH PROPER GRADES. THE CONTRACTOR SHALLALSO BE RESPONSIBLE FOR A FINAL FIELD CHECK OF FINISHED GRADES ACCEPTABLE TO THEENGINEER/LANDSCAPE ARCHITECT PRIOR TO TOPSOIL AND SODDING ACTIVITIES.9.IF EXCESS OR SHORTAGE OF SOIL MATERIAL EXISTS, THE CONTRACTOR SHALL TRANSPORT ALLEXCESS SOIL MATERIAL OFF THE SITE TO AN AREA SELECTED BY THE CONTRACTOR, OR IMPORTSUITABLE MATERIAL TO THE SITE.10.EXCAVATE TOPSOIL FROM AREAS TO BE FURTHER EXCAVATED OR REGRADED AND STOCKPILE INAREAS DESIGNATED ON THE SITE. THE CONTRACTOR SHALL SALVAGE ENOUGH TOPSOIL FORRESPREADING ON THE SITE AS SPECIFIED. EXCESS TOPSOIL SHALL BE PLACED IN EMBANKMENTAREAS, OUTSIDE OF BUILDING PADS, ROADWAYS AND PARKING AREAS. THE CONTRACTOR SHALLSUBCUT CUT AREAS, WHERE TURF IS TO BE ESTABLISHED, TO A DEPTH OF 6 INCHES. RESPREADTOPSOIL IN AREAS WHERE TURF IS TO BE ESTABLISHED TO A MINIMUM DEPTH OF 6 INCHES.11.FINISHED GRADING SHALL BE COMPLETED. THE CONTRACTOR SHALL UNIFORMLY GRADE AREASWITHIN LIMITS OF GRADING, INCLUDING ADJACENT TRANSITION AREAS. PROVIDE A SMOOTHFINISHED SURFACE WITHIN SPECIFIED TOLERANCES, WITH UNIFORM LEVELS OR SLOPESBETWEEN POINTS WHERE ELEVATIONS ARE SHOWN, OR BETWEEN SUCH POINTS AND EXISTINGGRADES. AREAS THAT HAVE BEEN FINISH GRADED SHALL BE PROTECTED FROM SUBSEQUENTCONSTRUCTION OPERATIONS, TRAFFIC AND EROSION. REPAIR ALL AREAS THAT HAVE BECOMERUTTED BY TRAFFIC OR ERODED BY WATER OR HAS SETTLED BELOW THE CORRECT GRADE. ALLAREAS DISTURBED BY THE CONTRACTOR'S OPERATIONS SHALL BE RESTORED TO EQUAL ORBETTER THAN ORIGINAL CONDITION OR TO THE REQUIREMENTS OF THE NEW WORK.12.PRIOR TO PLACEMENT OF THE AGGREGATE BASE, A TEST ROLL WILL BE REQUIRED ON THESTREET AND/OR PARKING AREA SUBGRADE. THE CONTRACTOR SHALL PROVIDE A LOADEDTANDEM AXLE TRUCK WITH A GROSS WEIGHT OF 25 TONS. THE TEST ROLLING SHALL BE AT THEDIRECTION OF THE SOILS ENGINEER AND SHALL BE COMPLETED IN AREAS AS DIRECTED BY THESOILS ENGINEER. THE SOILS ENGINEER SHALL DETERMINE WHICH SECTIONS OF THE STREET ORPARKING AREA ARE UNSTABLE. CORRECTION OF THE SUBGRADE SOILS SHALL BE COMPLETED INACCORDANCE WITH THE REQUIREMENTS OF THE SOILS ENGINEER. NO TEST ROLL SHALL OCCURWITHIN 10' OF ANY UNDERGROUND STORM RETENTION/DETENTION SYSTEMS.13. TOLERANCES13.1.THE BUILDING SUBGRADE FINISHED SURFACE ELEVATION SHALL NOT VARY BY MORE THAN0.30 FOOT ABOVE, OR 0.30 FOOT BELOW, THE PRESCRIBED ELEVATION AT ANY POINT WHEREMEASUREMENT IS MADE.13.2.THE STREET OR PARKING AREA SUBGRADE FINISHED SURFACE ELEVATION SHALL NOT VARYBY MORE THAN 0.05 FOOT ABOVE, OR 0.10 FOOT BELOW, THE PRESCRIBED ELEVATION OFANY POINT WHERE MEASUREMENT IS MADE.13.3.AREAS WHICH ARE TO RECEIVE TOPSOIL SHALL BE GRADED TO WITHIN 0.30 FOOT ABOVE ORBELOW THE REQUIRED ELEVATION, UNLESS DIRECTED OTHERWISE BY THE ENGINEER.13.4.TOPSOIL SHALL BE GRADED TO PLUS OR MINUS 1/2 INCH OF THE SPECIFIED THICKNESS.14.MAINTENANCE14.1.THE CONTRACTOR SHALL PROTECT NEWLY GRADED AREAS FROM TRAFFIC AND EROSION,AND KEEP AREA FREE OF TRASH AND DEBRIS.14.2.CONTRACTOR SHALL REPAIR AND REESTABLISH GRADES IN SETTLED, ERODED AND RUTTEDAREAS TO SPECIFIED TOLERANCES. DURING THE CONSTRUCTION, IF REQUIRED, AND DURINGTHE WARRANTY PERIOD, ERODED AREAS WHERE TURF IS TO BE ESTABLISHED SHALL BERESEEDED AND MULCHED.14.3.WHERE COMPLETED COMPACTED AREAS ARE DISTURBED BY SUBSEQUENT CONSTRUCTIONOPERATIONS OR ADVERSE WEATHER, CONTRACTOR SHALL SCARIFY, SURFACE, RESHAPE,AND COMPACT TO REQUIRED DENSITY PRIOR TO FURTHER CONSTRUCTION.GENERAL GRADING NOTES:1.0' CONTOUR ELEVATION INTERVALGRADING PLAN LEGEND:SPOT GRADE ELEVATION GUTTERSPOT GRADE ELEVATION TOP OF CURBSPOT GRADE ELEVATION BOTTOM OF STAIRS/TOP OF STAIRSCITY OF COLUMBIA HEIGHTS GRADING NOTES:1.RESERVED FOR CITY SPECIFIC GRADING NOTES.SEE SWPPP ON SHEETS SW1.0-SW1.5EROSION CONTROL NOTES:01" = 20'-0"20'-0"10'-0"NKnow what'sbelow.before you dig.CallREX. 1' CONTOUR ELEVATION INTERVALSPOT GRADE ELEVATION (GUTTER/FLOW LINEUNLESS OTHERWISE NOTED)CURB AND GUTTER (T.O = TIP OUT)EMERGENCY OVERFLOWEOF=1135.52TOSPOT GRADE ELEVATION MATCH EXISTINGGRADE BREAK - HIGH POINTS S14° 5 8 ' 4 4 " W 3 3 1 . 1 2S89°58'32"W 159.71N00°01'28"W 319.94 S89°59'59"E 245.43LOT 1BLOCK 1112.82248.0 0 83.13 N07°01'24"E 5 1 . 2 1 N00°01'28"W 95.31 113.66Δ=60°51'43"R=107.00132.61CONSTRUCTION LIMITSCONSTRUCTION LIMITSCB 1RIM=904.65IE=900.65EXISTING STORMMANHOLECORE-DRILLPROPOSEDCONNECTIONFIELD VERIFY ALLELEVATIONS ANDREPORT FINDINGS TOENGINEER PRIOR TOCONSTRUCTIONIE PROP=894.1311 LF 15" HDPESTORM @ 2.00%FIRE DEPARTMENTCONNECTION,COORD. W/MECH'L6" COMBINED DIPWATER SERVICEAND VALVE, STUBTO WITHIN 5' FROMBUILDING, COORD.W/MECH'LPROPOSED GV,AND VALVE BOXMAKE WET TAPCONNECTION TOEXISTING WATERMAIN, COORD.WITH CITYSAVAGED HYDRANT,GATE VALVE, & BOXSTUB SANITARY TO 5'FROM BUILDINGIE @ STUB=898.62COORD. W/MECH'L24 LF 6" PVC SDR 26SANITARY SERVICE@ 2.00%MAKE CONNECTION TOEXISTING SANITARY MHEX IE=898.04(W)(FIELD VERIFY)PROP IE=898.14COORDINATE WITH CITYCONTRACTOR SHALL SAWCUT &REMOVE PVMTS. AND CURBS FORINSTALLATION OF UTILITIES. UPONCOMPLETION OF UTILITY WORK,REPLACE ALL MATERIAL, IN KIND, ANDTO CITY STANDARD AND APPROVALTRENCH DRAIN (BY OTHERS)CONNECT TO INTERIOR BUILDINGMECH'L PUMP, COORD. w/ ARCH &MECH'L PLANS PRIOR TOCONSTRUCTION FOR LOCATION,SIZING AND DETAILSCB 10RIM=905.59IE=901.59FILTRATION BASIN 172" PERF. CMP88'x35' FOOTPRINT(SEE SHOP DWGs)12" SIDE & END STONE, 36"STONE SEPARATION, 6"STONE COVER AND 6"STONE BASEIE CHAMBERS=896.00TOP CHAMBERS=902.00TOP STONE=902.50BOT SAND=894.50IE DRAINTILE=894.50100-YR HWL=901.30INLETIE=899.99INLETIE=900.43ACCESSRISER, TYP.80 LF 15" HDPESTORM @ 2.00%37 LF 12" HDPESTORM @ 1.00%18 LF 12" HDPESTORM @ 10.00%18 LF 6" SDR 35 PVCSTORM @ 0.00%MH 20RIM=904.30IE (W)=894.50IE (E)=896.45IE (DT)=894.50OUTLETIE=898.25Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONC4.0UTILITY PLAN. .. .. .. .. .. .GENERAL UTILITY NOTES:UTILITY LEGEND:CITY OF COLUMBIA HEIGHTS UTILITY NOTES:1.RESERVED FOR CITY SPECIFIC UTILITY NOTES.01" = 20'-0"20'-0"10'-0"NKnow what'sbelow.before you dig.CallRCATCH BASINGATE VALVE AND VALVE BOXSANITARY SEWERSTORM SEWERWATER MAINPROPOSED FIRE HYDRANTMANHOLEFES AND RIP RAP1. SEE SITE PLAN FOR HORIZONTAL DIMENSIONS AND LAYOUT.2. CONTRACTOR SHALL FIELD VERIFY LOCATION AND ELEVATION OF EXISTING UTILITIES ANDTOPOGRAPHIC FEATURES PRIOR TO CONSTRUCTION. THE CONTRACTOR SHALL IMMEDIATELYNOTIFY THE ENGINEER OF DISCREPANCIES OR VARIATIONS FROM THE PLANS.3. ALL EXISTING UTILITY LOCATIONS SHOWN ARE APPROXIMATE. CONTACT "GOPHER STATE ONECALL" (651-454-0002 OR 800-252-1166) FOR UTILITY LOCATIONS, 48 HOURS PRIOR TOCONSTRUCTION. THE CONTRACTOR SHALL REPAIR OR REPLACE ANY UTILITIES THAT AREDAMAGED DURING CONSTRUCTION AT NO COST TO THE OWNER.4. UTILITY INSTALLATION SHALL CONFORM TO THE CURRENT EDITION OF "STANDARDSPECIFICATIONS FOR WATER MAIN AND SERVICE LINE INSTALLATION" AND "SANITARY SEWER ANDSTORM SEWER INSTALLATION" AS PREPARED BY THE CITY ENGINEERS ASSOCIATION OFMINNESOTA (CEAM), AND SHALL CONFORM WITH THE REQUIREMENTS OF THE CITY AND THEPROJECT SPECIFICATIONS.5. CASTINGS SHALL BE SALVAGED FROM STRUCTURE REMOVALS AND RE-USED OR PLACED AT THEDIRECTION OF THE OWNER.6. ALL WATER PIPE SHALL BE CLASS 52 DUCTILE IRON PIPE (DIP) AWWA C151, ASME B16.4, AWWA C110, AWWA C153 UNLESS OTHERWISE NOTED.7. ALL SANITARY SEWER SHALL BE SDR 26 POLYVINYL CHLORIDE (PVC) ASTM D3034 & F679, OR SCH40 ASTM D1785, 2665, ASTM F794, 1866) UNLESS OTHERWISE NOTED.8. ALL STORM SEWER PIPE SHALL BE HDPE ASTM F714 & F2306 WITH ASTM D3212 SPEC FITTINGS UNLESS OTHERWISE NOTED.9. PIPE LENGTHS SHOWN ARE FROM CENTER TO CENTER OF STRUCTURE OR TO END OF FLAREDEND SECTION.10. UTILITIES ON THE PLAN ARE SHOWN TO WITHIN 5' OF THE BUILDING FOOTPRINT. THECONTRACTOR IS ULTIMATELY RESPONSIBLE FOR THE FINAL CONNECTION TO BUILDING LINES.COORDINATE WITH ARCHITECTURAL AND MECHANICAL PLANS.11. CATCH BASINS AND MANHOLES IN PAVED AREAS SHALL BE SUMPED 0.04 FEET. ALL CATCHBASINS IN GUTTERS SHALL BE SUMPED 0.15 FEET PER DETAILS. RIM ELEVATIONS SHOWN ON THISPLAN DO NOT REFLECT SUMPED ELEVATIONS.12. ALL FIRE HYDRANTS SHALL BE LOCATED 5 FEET BEHIND BACK OF CURB UNLESS OTHERWISENOTED.13. HYDRANT TYPE, VALVE, AND CONNECTION SHALL BE IN ACCORDANCE WITH CITY REQUIREMENTS.HYDRANT EXTENSIONS ARE INCIDENTAL.14. A MINIMUM OF 8 FEET OF COVER IS REQUIRED OVER ALL WATERMAIN, UNLESS OTHERWISENOTED. EXTRA DEPTH MAY BE REQUIRED TO MAINTAIN A MINIMUM OF 18" VERTICALSEPARATION TO SANITARY OR STORM SEWER LINES. EXTRA DEPTH WATERMAIN IS INCIDENTAL.15. A MINIMUM OF 18 INCHES OF VERTICAL SEPARATION AND 10 FEET OF HORIZONTAL SEPARATIONIS REQUIRED FOR ALL UTILITIES, UNLESS OTHERWISE NOTED.16. ALL CONNECTIONS TO EXISTING UTILITIES SHALL BE IN ACCORDANCE WITH CITY STANDARDS ANDCOORDINATED WITH THE CITY PRIOR TO CONSTRUCTION.17.CONNECTIONS TO EXISTING STRUCTURES SHALL BE CORE-DRILLED.18. COORDINATE LOCATIONS AND SIZES OF SERVICE CONNECTIONS WITH THE MECHANICALDRAWINGS.19. COORDINATE INSTALLATION AND SCHEDULING OF THE INSTALLATION OF UTILITIES WITHADJACENT CONTRACTORS AND CITY STAFF.20. ALL STREET REPAIRS AND PATCHING SHALL BE PERFORMED PER THE REQUIREMENTS OF THECITY. ALL PAVEMENT CONNECTIONS SHALL BE SAWCUT. ALL TRAFFIC CONTROLS SHALL BEPROVIDED BY THE CONTRACTOR AND SHALL BE ESTABLISHED PER THE REQUIREMENTS OF THEMINNESOTA MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MMUTCD) AND THE CITY. THISSHALL INCLUDE BUT NOT BE LIMITED TO SIGNAGE, BARRICADES, FLASHERS, AND FLAGGERS ASNEEDED. ALL PUBLIC STREETS SHALL BE OPEN TO TRAFFIC AT ALL TIMES. NO ROAD CLOSURESSHALL BE PERMITTED WITHOUT APPROVAL BY THE CITY.21. ALL STRUCTURES, PUBLIC AND PRIVATE, SHALL BE ADJUSTED TO PROPOSED GRADES WHEREREQUIRED. THE REQUIREMENTS OF ALL OWNERS MUST BE COMPLIED WITH. STRUCTURES BEINGRESET TO PAVED AREAS MUST MEET OWNERS REQUIREMENTS FOR TRAFFIC LOADING.22. CONTRACTOR SHALL COORDINATE ALL WORK WITH PRIVATE UTILITY COMPANIES.23. CONTRACTOR SHALL COORDINATE CONNECTION OF IRRIGATION SERVICE TO UTILITIES.COORDINATE THE INSTALLATION OF IRRIGATION SLEEVES NECESSARY AS TO NOT IMPACTINSTALLATION OF UTILITIES.24. CONTRACTOR SHALL MAINTAIN AS-BUILT PLANS THROUGHOUT CONSTRUCTION AND SUBMITTHESE PLANS TO ENGINEER UPON COMPLETION OF WORK.25.ALL JOINTS AND CONNECTIONS IN STORM SEWER SYSTEM SHALL BE GASTIGHT OR WATERTIGHT.APPROVED RESILIENT RUBBER JOINTS MUST BE USED TO MAKE WATERTIGHT CONNECTIONS TOMANHOLES, CATCHBASINS, OR OTHER STRUCTURES.26.ALL PORTIONS OF THE STORM SEWER SYSTEM LOCATED WITHIN 10 FEET OF THE BUILDING ORWATER SERVICE LINE MUST BE TESTED IN ACCORDANCE WITH MN RULES, CHAPTER 4714,SECTION 1109.0. Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONC5.0CIVIL DETAILS. .. .. .. .. .. .6"8"12"13 1/2"6"1/2" RADIUSFINISHED GRADE3" RADIUS CORNERS1:3 BATTER SLOPE GUTTER3/4"/1'NOTES:1. INSTALL CONSTRUCTION JOINTS AT10'-0" O.C. +/-2. BASE DEPTH DEPENDANT UPONSOIL CONDITIONSCLASS V AGGREGATE SUBBASE-SEEBITUMINOUS PAVEMENT DETAIL (6" MIN.)FINISHED GRADE0.5% SLOPE-CONSTRUCT WITH REVERSE SLOPEGUTTER (T.O. GUTTER) WHERE THE PAVEMENT SLOPESAWAY FROM CURB. SEE PLANN T SB-612 CONCRETE CURB AND GUTTER7"27"20"FINISHED GRADESLOPE GUTTER 3/4"/1'NOTES:1. INSTALL CONSTRUCTION JOINTS AT 10'-0" O.C. +/-2. BASE DEPTH DEPENDANT UPON SOIL CONDITIONSCONTINUOUS SLOPE CONCRETE CURBAND GUTTERPAVEMENT MATERIALSSEE DETAIL6"6"RIBBON CURBN T S3FINISHED GRADETOOLED CONTROL JOINTSEE DETAIL (TYP.)LIGHT BROOM FINISH PERPENDICULAR TOTRAFFIC WITH 3" WIDE SMOOTHTROWELLED EDGE5" CONCRETE AS SPECIFIED6" CLASS 5 AGGREGATE BASECOMPACTED SUBGRADENOTES:1. INSTALLATION SHALL BE CERTIFIED AND IN ACCORDANCE TO AN ON-SITEA.C.I. TECHNICIAN AS SPECIFIED.2. SEE GEO-TECHNICAL RECOMMENDATIONS FOR GROSS WEIGHTREQUIREMENTS.3. SEE LAYOUT DRAWINGS FOR LIMITS OF WALKS.4. SEE CONCRETE JOINT DETAIL FOR REQUIREMENTS.5. 1/2" WIDE EXPANSION JOINT AND SEALANT AT ALL CURBS.CONCRETE WALK/PAD3"2"THIS OCCURS ONLY WHEREMULCH MEETS EDGE OF WALKLEAVE TOP OFMULCH DOWN 1"FROM TOP OF WALKN T S (PRIVATE PROPERTY)48"AS REQUIREDCONCRETE THRUST BLOCKWATERMAINGATE VALVEREFER TO DRAWINGSFOR SIZESVALVE BOXFINISH GRADECOVER SHALL BESTAMPED WITH "WATER"GATE VALVE BOXN T SADJUST TOP TO 1/2" BELOW FINISHEDPAVEMENT GRADE OR 1" BELOW FINISHEDTURF GRADE. SET SO AS TO PROVIDE 12" OFUPWARD ADJUSTMENT.6BENDCROSSTEE45° BENDWYENOTES:1. CONCRETE THRUST BLOCKING TO BE POURED AGAINST UNDISTURBED EARTH.2. KEEP CONCRETE CLEAR OF JOINT AND ACCESSORIES.3. IF NOT SHOWN ON PLANS, REQUIRED BEARING AT FITTING SHALL BE AS INDICATED ABOVE, ADJUSTED IFNECESSARY, TO CONFORM TO THE TEST PRESSURE(S) AND ALLOWABLE SOIL BEARING STRESS(ES).4. BEARING AREAS AND SPECIAL BLOCKING DETAILS SHOWN ON PLANS TAKE PRECEDENCE OVER BEARING AREASAND BLOCKING DETAILS SHOWN THIS STANDARD DETAIL.5. ABOVE BEARING AREAS BASED ON TEST PRESSURE OF 150 P.S.I. AND AN ALLOWABLE SOIL BEARING STRESS OF2000 POUNDS PER SQUARE FOOT. TO COMPUTE BEARING AREAS FOR DIFFERENT TEST PRESSURES AND SOILBEARING STRESSES, USE THE FOLLOWING EQUATION: BEARING AREA = (TEST PRESSURE/150) X (200/SOIL BEARINGSTRESS) X (TABLE VALUE).PLUGGED CROSSPLUGGED CROSSEACH AREA IS 1/2 OFTABULATED AREAPLUGGED TEEPLUG OR CAP1/4" PLYWOODOVER FACEOF BOLTSA1A2NOMINALFITTING SIZE(INCHES)TYE, WYE,PLUG, OR CAP90° BEND,PLUGGEDCROSSTEE PLUGGEDON RUNA1A245°BEND22.5°BEND11.25°BEND41.0 1.4 1.9 1.4 1.0 - -62.1 3.0 4.3 3.0 1.6 1.0 -105.9 8.4 11.8 8.4 4.6 2.6 1.2128.5 12.0 17.0 12.0 6.6 3.4 1.71411.5 16.3 23.0 16.3 8.9 4.6 2.31615.0 21.3 30.0 21.3 11.6 6.0 3.01819.0 27.0 38.0 27.0 14.6 7.6 3.62023.5 33.3 47.0 33.3 18.1 9.4 4.72434.0 48.0 68.0 48.0 26.2 13.6 6.863.8 5.3 7.6 5.4 2.9 1.5 1.0THRUST BLOCKN T S56" PROVIDE INSULATION PER PLAN FIELD VERIFY DEPTH 6" 4" 6" (MIN.)NOTES:1. INSULATION BOARD TO BE CLOSED CELL. EXTRUDED POLYSTYRENE FOAM MEETINGASTM 578, TYPE VI, 40PSI COMPRESSING STRENGTH (ASTM D1621) 0.1%MAX. WATERABSORPTION (ASTM C272).2. BACKFILL MATERIAL AROUND INSULATION MUST BE FINE SAND FREE FROM ROOT,ORGANIC MATERIAL, OR OTHER INJURIOUS MATERIALS.3. OVERLAP ALL INSULATION BOARD JOINTS.UTILITY PIPE INSULATION DETAILN T S1'-6" (MIN)PIPE BEDDINGMATERIALBACKFILL MATERIALFINE SAND (FA7)MIN. 2' WIDE BY 4" THICKINSULATION BOARD (USE 2-2"THICK BOARDS). MASTIC ALL JOINTSEXTEND INSULATION BOARD DOWNSIDES TO 7.5' DEPTH.FINISH GRADEDI A DIA + 3'UTILITY PIPE718" RADIUS5'-6" SQUARE OVERALL3" LINE WIDTH6" LINE WIDTH12" DIAMETER6" RADIUS4"ACCESSIBLE PARKING PAVEMENT MARKINGN T SALL COLORS TO MATCH ADASTANDARD COLORS9EXTEND POST PAST TOP OF POST10 DEGREE SLOPE1 INCH SILICONE RUBBEROR ASPHALTIC CAULKINGCOMPOUNDFILL ANNULAR SPACE TO 1 INCHFROM TOP WITH SILICA SANDCONCRETE FOOTING AS SPECIFIED6"3'-6"2'-6" 60"-66" FROM PAVEMENT TOBOTTOM OF SIGN 1/2"MATERIAL VARIES-SEE PLANMETAL SIGN ACCORDINGTO MN STATE CODENOTE:1. SIGN SHALL BE AS SPECIFIED.2. VERIFY POST PAINT C0LOR WITH LANDSCAPEARCHITECT PRIOR TO INSTALLATION.ACCESSIBLE SIGN AND POSTN T S1'-6"6" O.D. GALVANIZED STEEL PIPE PAINTED WITH 1COAT OF APPROPRIATE PRIMER AND TWO COATSSIGN ENAMEL. FILL ANNULAR SPACE WITH GROUT.COVER WITH YELLOW "IDEAL SHIELD" PLASTICCOVER.GREEN POWDER COATED STEEL SQUAREPOST AS SPECIFIED1/4" METAL PLATE WELDED TOBOTTOM OF 6” PIPEGALVANIZED STEEL FASTENER(TYP. OF 2)8LIGHT DUTY BITUMINOUS PAVEMENT6" CLASS 5 AGGREGATESUBBASE (MNDOT 3138)2" BASE COURSE (MNDOT 2360 - SPNWB330B)TACK COAT (MNDOT 2357)1.5" WEAR COURSE (MNDOT 2360 - SPWEA340B)COMPACTED SUBGRADE (100% OF STANDARDPROCTOR MAXIMUM DRY DENSITY)N T SNOTE:SECTION IS FORBIDDING PURPOSESONLY. REFER TOGEOTECH FORFINAL PAVEMENTSECTION.1 Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONC5.1CIVIL DETAILS. .. .. .. .. .. .PIPE BEDDING - RCP & DIPN T S4PIPE BEDDING - PVCN T S5216" MIN. 18" MIN.KEY1. TOPSOIL2. FREE DRAINING ANGULAR WASHED STONE 3/4" - 2" PARTICLE SIZE (NON LIMESTONE MATERIAL THATCONTAINS LESS THAN 5% DELETERIOUS MATERIAL).INSTALL TO MIN. 95% STANDARD DENSITY PER AASHTO T99.TYP. SECTION DETAILNTS1.INSTALL SILT FENCE AND/OR OR OTHER APPROPRIATE TEMPORARY EROSIONCONTROL DEVICES TO PREVENT SEDIMENT FROM LEAVING OR ENTERING THEPRACTICE DURING CONSTRUCTION.2.ALL DOWN-GRADIENT PERIMETER SEDIMENT CONTROL BMP'S MUST BE INPLACE BEFORE ANY UP GRADIENT LAND DISTURBING ACTIVITY BEGINS.3.PERFORM CONTINUOUS INSPECTIONS OF EROSION CONTROL PRACTICES.4.INSTALL UTILITIES (WATER, SANITARY SEWER, ELECTRIC, PHONE, FIBER OPTIC,ETC) PRIOR TO SETTING FINAL GRADE OF BIORETENTION DEVICE.5.PERFORM ALL OTHER SITE IMPROVEMENTS.6.SEED AND MULCH ALL AREAS AFTER DISTURBANCE.7.CONSTRUCT RETENTION DEVICE UPON STABILIZATION OF CONTRIBUTINGDRAINAGE AREA.8.IMPLEMENT TEMPORARY AND PERMENATE EROSION CONTROL PRACTICES.9.PLANT AND MULCH SITE.10.REMOVE TEMPORARY EROSION CONTROL DEVICES AFTER THE CONTRIBUTINGDRAINAGE AREA IS ADEQUATELY VEGETATED.GENERAL NOTES1.IN THE EVENT THAT SEDIMENT IS INTRODUCED INTO THE BMP DURING ORIMMEDIATELY FOLLOWING EXCAVATION, THIS MATERIAL SHALL BE REMOVEDFROM THE PRACTICE PRIOR TO CONTINUING CONSTRUCTION.2.GRADING OF RETENTION DEVICES SHALL BE ACCOMPLISHED USINGLOW-COMPACTION EARTH-MOVING EQUIPMENT TO PREVENT COMPACTION OFUNDERLYING SOILS.3.ALL SUB MATERIALS BELOW THE SPECIFIED RETENTION DEPTH (ELEVATION)SHALL BE UNDISTURBED, UNLESS OTHERWISE NOTED.CONSTRUCTION SEQUENCING12"(TYP)36"12"(TYP)GRADEPAVEMENT/LANDSCAPING/SOD72" DIA. PERF. CMP PIPE.FABRIC WRAP TOP, SIDES AND BOTTOM WITHCONTECH C-40 NON-WOVEN GEOTEXTILESUBDRAIN FILTER MATERIAL - FINE FILTERAGGREGATE PER MNDOT 3149.2J6" PERF. CPP DRAIN TILE PIPE PERMNDOT 3245 WITH FABRIC SOCK.LOCATION AS SHOWN ON THE PLANSUNDERGROUND FILTRATION SYSTEMN T S9 Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONC5.2CIVIL DETAILS. .. .. .. .. .. . S14° 5 8 ' 4 4 " W 3 3 1 . 1 2S89°58'32"W 159.71N00°01'28"W 319.94 S89°59'59"E 245.43LOT 1BLOCK 1112.82248.0 0 83.13 N07°01'24"E 5 1 . 2 1 N00°01'28"W 95.31 113.66Δ=60°51'43"R=107.00132.61CONSTRUCTION LIMITSCONSTRUCTION LIMITS9 - PPCB1 - ABM1 - SHL1 - AGG1 - AGG1 - AGG1 - ABM1 - ABM1 - ABM1 - ABM2 - HB1 - AGG1 - HB1 - HB2 - WP3 - BHS10 - CMP17 - SGJ8 - SGJ7 - SGJ3 - SGJ8 - SGJ6 - SGJ1 - ABM6 - FPR3 - TY6 - PPCB3 - TY3 - CBB5 - KFG8 - SSD3 - FPR3 - BES5 - KFG3 - BES7 - CBB1 - ABM7 - CAD1 - RC2 - TY1 - RBC1 - SHL1 - SHL1 - ABM1 - ABMREVISION SUMMARYDATEDESCRIPTIONL1.0LANDSCAPE PLAN. .. .. .. .. .. .Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 24904Patrick J. SarverLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED LANDSCAPE ARCHITECT UNDERTHE LAWS OF THE STATE OF MINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PM1.WHERE SHOWN, SHRUB & PERENNIAL BEDS SHALL BE MULCHED WITH 4" DEPTH (MINIMUM AFTER INSTALLATION AND/OR TOP DRESSING OPERATIONS) OF SHREDDED CYPRESS MULCH.2.ALL TREES SHALL BE MULCHED WITH SHREDDED CYPRESS MULCH TO OUTER EDGE OF SAUCER OR TO EDGE OF PLANTING BED, IF APPLICABLE. ALL MULCH SHALL BE KEPT WITHIN A MINIMUM OF 2" FROM TREETRUNK.3.IF SHOWN ON PLAN, RANDOM SIZED LIMESTONE BOULDERS COLOR AND SIZE TO COMPLIMENT NEW LANDSCAPING. OWNER TO APPROVE BOULDER SAMPLES PRIOR TO INSTALLATION.4.PLANT MATERIALS SHALL CONFORM WITH THE AMERICAN ASSOCIATION OF NURSERYMEN STANDARDS AND SHALL BE OF HARDY STOCK, FREE FROM DISEASE, DAMAGE AND DISFIGURATION. CONTRACTOR ISRESPONSIBLE FOR MAINTAINING PLUMPNESS OF PLANT MATERIAL FOR DURATION OF ACCEPTANCE PERIOD.5.UPON DISCOVERY OF A DISCREPANCY BETWEEN THE QUANTITY OF PLANTS SHOWN ON THE SCHEDULE AND THE QUANTITY SHOWN ON THE PLAN, THE PLAN SHALL GOVERN.6.CONDITION OF VEGETATION SHALL BE MONITORED BY THE LANDSCAPE ARCHITECT THROUGHOUT THE DURATION OF THE CONTRACT. LANDSCAPE MATERIALS PART OF THE CONTRACT SHALL BE WARRANTED FORONE (1) FULL GROWING SEASONS FROM SUBSTANTIAL COMPLETION DATE.7.ALL AREAS DISTURBED BY CONSTRUCTION ACTIVITIES SHALL RECEIVE 4" LAYER TOPSOIL LOAM AND SOD AS SPECIFIED UNLESS OTHERWISE NOTED ON THE DRAWINGS.8.COORDINATE LOCATION OF VEGETATION WITH UNDERGROUND AND OVERHEAD UTILITIES, LIGHTING FIXTURES, DOORS AND WINDOWS. CONTRACTOR SHALL STAKE IN THE FIELD FINAL LOCATION OF TREES ANDSHRUBS FOR REVIEW AND APPROVAL BY THE LANDSCAPE ARCHITECT PRIOR TO INSTALLATION.9.ALL PLANT MATERIALS SHALL BE WATERED AND MAINTAINED UNTIL ACCEPTANCE.10.REPAIR AT NO COST TO OWNER ALL DAMAGE RESULTING FROM LANDSCAPE CONTRACTOR'S ACTIVITIES.11.SWEEP AND MAINTAIN ALL PAVED SURFACES FREE OF DEBRIS GENERATED FROM LANDSCAPE CONTRACTOR'S ACTIVITIES.12.REPAIR AT NO COST TO THE OWNER IRRIGATION SYSTEM DAMAGED FROM LANDSCAPE CONSTRUCTION ACTIVITIES.13.PROVIDE SITE WIDE IRRIGATION SYSTEM DESIGN AND INSTALLATION. SYSTEM SHALL BE FULLY PROGRAMMABLE AND CAPABLE OF ALTERNATE DATE WATERING. THE SYSTEM SHALL PROVIDE HEAD TO HEAD ORDRIP COVERAGE AND BE CAPABLE OF DELIVERING ONE INCH OF PRECIPITATION PER WEEK. SYSTEM SHALL EXTEND INTO THE PUBLIC RIGHT-OF-WAY TO THE EDGE OF PAVEMENT/BACK OF CURB.14.CONTRACTOR SHALL SECURE APPROVAL OF PROPOSED IRRIGATION SYSTEM INLCUDING PRICING FROM OWNER, PRIOR TO INSTALLATION.LANDSCAPE NOTES:01" = 20'-0"20'-0"10'-0"NKnow what'sbelow.before you dig.CallRLEGENDROCK MULCH/RIP-RAP, SAMPLES REQUIREDPROVIDE EDGING AS SHOWN ON PLANLAWN - SODSEED TYPE 1 - MNDOT 34-262 WET PRAIRIE, PERMNDOT SEEDING MANUAL SPECIFICATIONS (2014)1" DIA. ROCK MAINTENANCE STRIP OVER FILTER FABRIC,SAMPLES REQUIRED. PROVIDE EDGING AS SHOWN ON PLANGEOTEXTILE (ADD TO SEED MIX HATCH)PROPOSED PERENNIAL PLANT SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESSEED TYPE 2 - MNDOT 35-221 DRY PRAIRIE, PERMNDOT SEEDING MANUAL SPECIFICATIONS (2014)SHREDDED CYPRESS MULCH, SAMPLES REQUIREDPROVIDE EDGING AS SHOWN ON PLANPROPOSED DECIDUOUS AND EVERGREEN SHRUB SYMBOLS - SEEPLANT SCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED ORNAMENTAL TREE SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED EVERGREEN TREE SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED CANOPY TREE SYMBOLS - SEE PLANT SCHEDULEAND PLAN FOR SPECIES AND PLANTING SIZESEDGINGDECORATIVE BOULDERS (ROUNDED & BLOCK STYLE), 18"-30" DIA.LANDSCAPE CALCS.:PLANT SCHEDULE - ENTIRE SITESYMQUANT.COMMON NAMEBOTANICAL NAMESIZEROOTCOMMENTSDECIDUOUS TREESABM9Autumn Blaze MapleAcer x freemanii 'Jeffersred'2.5" CAL.B&BSTRAIGHT LEADER. FULL FORMSHL3SKYLINE HONEYLOCUSTGleditsia triacanthos 'Skycole'2.5" CAL.B&BSTRAIGHT LEADER. FULL FORMAGG4Autumn Gold GinkgoGinkgo biloba 'Autumn Gold'HB4HackberryCeltis occidentalisEVERGREEN TREESBHS3BLACK HILLS SPRUCEPicea glauca 'Densata'6' ht.B&BSTRAIGHT LEADER. FULL FORMWP2White PinePinus strobus6' ht.B&BSTRAIGHT LEADER. FULL FORM25TOTALORNAMENTAL TREESRBC1RED BARON FLOWERING CRABMalus 'Red Baron'1.5" CAL.B&BSTRAIGHT LEADER. FULL FORMSHRUBS - CONIFEROUS & EVERGREENCBB10Fire Ball EounymusEuonymus alatus 'Select'36" HT.CONT.CMP10Big Tuna Mugo PinePinus mugo 'Big Tuna'24" HT.CONT.FPR9PAVEMENT FOXI ROSERosa 'Foxi Pavement'24" HT.CONT.SGJ49Sea Green JuniperJuniperus chinensis 'Sea Green'24" HT.CONT.RC1RUSSIAN CYPRESSMicrobiota decussata24" HT.CONT.TY8TAUNTON'S YEWTaxus x media 'Tauntonii'24" HT.CONT.PERENNIALS & GRASSESKFG10KARL FOERSTER GRASSCalamagrostis x acutiflora "Karl Foerster"#1CONT.SSD8STELLA SUPREME DAYLILYHemerocallis 'Stella Supreme'#1CONT.CAD7CHICAGO APACHE DAYLILYHemerocallis 'Chicago Apache#1CONT.PPCB11PLUM PUDDING CORAL BELLSHeuchera 'Plum Pudding'#1CONT.BES6GOLDSTURM RUDBECKIARudbeckia fulgida 'Goldsturm'#1CONT. REVISION SUMMARYDATEDESCRIPTIONL1.1LANDSCAPE PLANNOTES & DETAILS. .. .. .. .. .. .Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 24904Patrick J. SarverLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED LANDSCAPE ARCHITECT UNDERTHE LAWS OF THE STATE OF MINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PM1.ENTIRE SITE SHALL BE FULLY IRRIGATED. THE CONTRACTOR SHALL SUBMIT IRRIGATION SHOP DRAWINGS FOR REVIEWAND APPROVAL BY THE LANDSCAPE ARCHITECT PRIOR TO INSTALLATION.2.SEE MECHANICAL AND ELECTRICAL PLANS AND SPECIFICATIONS FOR IRRIGATION WATER, METER, AND POWERCONNECTIONS.3.CONTRACTOR TO VERIFY LOCATION OF ALL UNDERGROUND/ABOVE GROUND FACILITIES PRIOR TO ANYEXCAVATION/INSTALLATION. ANY DAMAGE TO UNDERGROUND/ABOVE GROUND FACILITIES SHALL BE THERESPONSIBILITY OF THE CONTRACTOR AND COSTS ASSOCIATED WITH CORRECTING DAMAGES SHALL BE BORNEENTIRELY BY THE CONTRACTOR.4.SERVICE EQUIPMENT AND INSTALLATION SHALL BE PER LOCAL UTILITY COMPANY STANDARDS AND SHALL BE PERNATIONAL AND LOCAL CODES. EXACT LOCATION OF SERVICE EQUIPMENT SHALL BE COORDINATED WITH THELANDSCAPE ARCHITECT OR EQUIVALENT AT THE JOB SITE.5.CONTRACTOR SHALL COORDINATE WITH LOCAL UTILITY COMPANY FOR THE PROPOSED ELECTRICAL SERVICE ANDMETERING FACILITIES.6.IRRIGATION WATER LINE CONNECTION SIZE IS 1-12" AT BUILDING. VERIFY WITH MECHANICAL PLANS.COVAGE.7.ALL MAIN LINES SHALL BE 18" BELOW FINISHED GRADE.8.ALL LATERAL LINES SHALL BE 12" BELLOW FINISHED GRADE.9.ALL EXPOSED PVC RISERS, IF ANY, SHALL BE GRAY IN COLOR.10.CONTRACTOR SHALL LAY ALL SLEEVES AND CONDUIT AT 2'-0" BELOW THE FINISHED GRADE OF THE TOP OF PAVEMENT.EXTEND SLEEVES TO 2'-0" BEYOND PAVEMENT.11.CONTRACTOR SHALL MARK THE LOCATION OF ALL SLEEVES AND CONDUIT WITH THE SLEEVING MATERIAL "ELLED" TO2'-0" ABOVE FINISHED GRADE AND CAPPED.12.FABRICATE ALL PIPE TO MANUFACTURE'S SPECIFICATIONS WITH CLEAN AND SQUARE CUT JOINTS. USE QUALITY GRADEPRIMER AND SOLVENT CEMENT FORMULATED FOR INTENDED TYPE OF CONNECTION.13.BACKFILL ALL TRENCHES WITH SOIL FREE OF SHARP OBJECTS AND DEBRIS.14.ALL VALVE BOXES AND COVERS SHALL BE BLACK IN COLOR.15.GROUP VALVE BOXES TOGETHER FOR EASE WHEN SERVICE IS REQUIRED. LOCATE IN PLANT BED AREAS WHENEVERPOSSIBLE.16.IRRIGATION CONTROLLER LOCATION SHALL BE VERIFIED ON-SITE WITH OWNER'S REPRESENTATIVE.17.CONTROL WIRES: 14 GAUGE DIRECT BURIAL, SOLID COPPER IRRIGATION WIRE. RUN UNDER MAIN LINE. USEMOISTURE-PROOF SPLICES AND SPLICE ONLY AT VALVES OR PULL BOXES. RUN SEPARATE HOT AND COMMON WIRE TOEACH VALVE AND ONE (1) SPARE WIRE AND GROUND TO FURTHEST VALVE FROM CONTROLLER. LABEL OR COLOR CODEALL WIRES.18.AVOID OVER SPRAY ON BUILDINGS, PAVEMENT, WALLS AND ROADWAYS BY INDIVIDUALLY ADJUSTING RADIUS OR ARCON SPRINKLER HEADS AND FLOW CONTROL ON AUTOMATIC VALVE.19.ADJUST PRESSURE REGULATING VALVES FOR OPTIMUM PRESSURE ON SITE.20.USE SCREENS ON ALL HEADS.21.A SET OF AS-BUILT DRAWINGS SHALL BE MAINTAINED ON-SITE AT ALL TIMES IN AN UPDATED CONDITION.22.ALL PIPE 3" AND OVER SHALL HAVE THRUST BLOCKING AT EACH TURN.23.ALL AUTOMATIC REMOTE CONTROL VALVES WILL HAVE 3" MINIMUM DEPTH OF 3/4" WASHED GRAVEL UNDERNEATHVALVE AND VALVE BOX. GRAVEL SHALL EXTENT 3" BEYOND PERIMETER OF VALVE BOX.24.THERE SHALL BE 3" MINIMUM SPACE BETWEEN BOTTOM OF VALVE BOX COVER AND TOP OF VALVE STRUCTURE.IRRIGATION NOTES:FACE OF BUILDING, WALL, OR STRUCTUREMIN. 3" LAYER OF ROCK MULCH AS SPECIFIED. PROVIDE SAMPLE TOLANDSCAPE ARCHITECT FOR APPROVAL PRIOR TO INSTALLATIONFINISHED GRADECOMPACTED SUBGRADEWATER PERMEABLE GEOTEXTILE FABRIC AS SPECIFIED18" - VERIFY W/ PLANAGGREGATE MAINTANENCE STRIPN T SSTAKED LANDSCAPE EDGER AS SPECIFIED, SEE MANUFACTURER'SINSTRUCTIONS AND SPECS. FOR INSTALLATION AND PLACEMENTSLOPE - MIN. 2%, MAX. 5:1VERIFY W/ GRADING PLAN1Know what'sbelow.before you dig.CallRPERENNIAL BED PLANTINGN T SPLANT TOP OF ROOTBALL 1-2" ABOVE ABOVESURROUNDING GRADEROOTS AT OUTER EDGE OF ROOTBALL LOOSENED TOENSURE PROPER BACKFILL-TO-ROOT CONTACTSLOPE SIDES OF HOLE OR VERTICAL SIDES AT EDGE OFPLANTING BEDEXISTING GRADEROCK OR ORGANIC MULCH, SEE GENERAL LANDSCAPENOTES AND PLAN NOTES FOR MULCH TYPE. KEEPMULCH MIN. 2" FROM PLANT STEMBACKFILL AS PER SPECIFICATIONDO NOT EXCAVATE BELOW ROOTBALL.SIZE VARIESSEE LANDSCAPE PLANMODIFY EXCAVATION BASED ON LOCATION OF PLANTMATERIAL AND DESIGN OF BEDS OR OVERALL PLANTPLACEMENT4DECIDUOUS & CONIFEROUS SHRUB PLANTINGN T SPRUNE AS FIELD DIRECTED BY THE LANDSCAPEARCHITECT TO IMPROVE APPEARANCE (RETAINNORMAL SHAPE FOR SPECIES)PLANT TOP OF ROOTBALL 1-2" ABOVE ABOVESURROUNDING GRADEROOTS AT OUTER EDGE OF ROOTBALL LOOSENED TOENSURE PROPER BACKFILL-TO-ROOT CONTACTSLOPE SIDES OF HOLE OR VERTICAL SIDES AT EDGE OFPLANTING BEDEXISTING GRADEROCK OR ORGANIC MULCH, SEE GENERAL LANDSCAPENOTES AND PLAN NOTES FOR MULCH TYPE. KEEPMULCH MIN. 2" FROM PLANT TRUNKBACKFILL AS PER SPECIFICATIONDO NOT EXCAVATE BELOW ROOTBALL.THREE TIMES WIDTHOF ROOTBALLRULE OF THUMB - MODIFY EXCAVATION BASED ONLOCATION OF PLANT MATERIAL AND DESIGN OF BEDSOR OVERALL PLANT PLACEMENT3LEGENDROCK MULCH/RIP-RAP, SAMPLES REQUIREDPROVIDE EDGING AS SHOWN ON PLANLAWN - SODSEED TYPE 1 - MNDOT 34-262 WET PRAIRIE, PERMNDOT SEEDING MANUAL SPECIFICATIONS (2014)1" DIA. ROCK MAINTENANCE STRIP OVER FILTER FABRIC,SAMPLES REQUIRED. PROVIDE EDGING AS SHOWN ON PLANGEOTEXTILE (ADD TO SEED MIX HATCH)PROPOSED PERENNIAL PLANT SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESSEED TYPE 2 - MNDOT 35-221 DRY PRAIRIE, PERMNDOT SEEDING MANUAL SPECIFICATIONS (2014)SHREDDED CYPRESS MULCH, SAMPLES REQUIREDPROVIDE EDGING AS SHOWN ON PLANPROPOSED DECIDUOUS AND EVERGREEN SHRUB SYMBOLS - SEEPLANT SCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED ORNAMENTAL TREE SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED EVERGREEN TREE SYMBOLS - SEE PLANTSCHEDULE AND PLAN FOR SPECIES AND PLANTING SIZESPROPOSED CANOPY TREE SYMBOLS - SEE PLANT SCHEDULEAND PLAN FOR SPECIES AND PLANTING SIZESEDGINGDECORATIVE BOULDERS (ROUNDED & BLOCK STYLE), 18"-30" DIA.THREE TIMES WIDTHOF ROOTBALLDECIDUOUS & CONIFEROUS TREE PLANTINGN T SPRUNE AS FIELD DIRECTED BY THE LANDSCAPEARCHITECT TO IMPROVE APPEARANCE (RETAINNORMAL TREE SHAPE)THREE 2"X4"X8' WOODEN STAKES, STAINED BROWNWITH TWO STRANDS OF WIRE TWISTED TOGETHER.STAKES SHALL BE PLACED AT 120° TO ONE ANOTHER.WIRE SHALL BE THREADED THROUGH NYLONSTRAPPING WITH GROMMETS. ALTERNATE STABILIZINGMETHODS MAY BE PROPOSED BY CONTRACTOR.TRUNK FLARE JUNCTION: PLANT TREE 1"-2" ABOVEEXISTING GRADEMULCH TO OUTER EDGE OF SAUCER OR TO EDGE OFPLANTING BED, IF APPLICABLE. ROCK OR ORGANICMULCH, SEE GENERAL LANDSCAPE NOTES AND PLANNOTES FOR MULCH TYPE. KEEP MULCH MIN. 2" FROMPLANT TRUNKEXISTING GRADECUT AND REMOVE BURLAP FROM TOP 1/3 OF ROOTBALL. IF NON-BIODEGRADABLE, REMOVE COMPLETELYSLOPE SIDES OF HOLE OR VERTICAL SIDES AT EDGE OFPLANTING BEDBACKFILL AS SPECIFIEDCOMPACT BOTTOM OF PIT, TYP.RULE OF THUMB - MODIFY EXCAVATION BASED ONLOCATION OF PLANT MATERIAL AND DESIGN OF BEDSOR OVERALL PLANT PLACEMENT2 CONSTRUCTION LIMITSCONSTRUCTION LIMITSINLET PROTECTION ATCATCH BASINS, TYPINLET PROTECTION ATCATCH BASINS, TYPCONSTRUCTIONENTRANCECONTRACTOR TO PROVIDEINLET PROTECTION AT ALLDOWNSTREAM CATCHBASINS.PERIMETEREROSION CONTROLAT CONSTRUCTIONLIMITS, TYP.PERIMETEREROSION CONTROLAT CONSTRUCTIONLIMITS, TYP.Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.0SWPPP - EXISTINGCONDITIONS. .. .. .. .. .. .01" = 20'-0"20'-0"10'-0"N1. RESERVED FOR CITY SPECIFIC EROSION CONTROL NOTES.CITY OF COLUMBIA HEIGHTS EROSION CONTROL NOTES:1. THIS PROJECT IS GREATER THAN ONE ACRE AND WILL REQUIRE ANMPCA NPDES PERMIT. CONTRACTOR IS RESPONSIBLE FOR OBTAININGANY EROSION CONTROL PERMITS REQUIRED BY THE CITY.2. SEE SHEETS SW1.0 - SW1.5 FOR ALL EROSION CONTROL NOTES,DESCRIPTIONS, AND PRACTICES.3. SEE GRADING PLAN FOR ADDITIONAL GRADING AND EROSIONCONTROL NOTES.4. CONTRACTOR IS RESPONSIBLE FOR SWPPP IMPLEMENTATION,INSPECTIONS, AND COMPLIANCE WITH NPDES PERMIT.SWPPP NOTES:Know what'sbelow.before you dig.CallRLEGEND:EX. 1' CONTOUR ELEVATION INTERVALINLET PROTECTIONSTABILIZED CONSTRUCTION ENTRANCEDRAINAGE ARROW1.0' CONTOUR ELEVATION INTERVALSILT FENCE / BIOROLL - GRADING LIMITEROSION CONTROL BLANKETALL SPECIFIED EROSION AND SEDIMENT CONTROL PRACTICES, ANDMEASURES CONTAINED IN THIS SWPPP ARE THE MINIMUMREQUIREMENTS. ADDITIONAL PRACTICES MAY BE REQUIRED DURINGTHE COURSE OF CONSTRUCTION. S14° 5 8 ' 4 4 " W 3 3 1 . 1 2S89°58'32"W 159.71N00°01'28"W 319.94 S89°59'59"E 245.43LOT 1BLOCK 1112.82248.0 0 83.13 N07°01'24"E 5 1 . 2 1 N00°01'28"W 95.31 113.66Δ=60°51'43"R=107.00132.61CONSTRUCTION LIMITSCONSTRUCTION LIMITSINLET PROTECTION ATCATCH BASINS, TYPINLET PROTECTION ATCATCH BASINS, TYPCONSTRUCTIONENTRANCECONTRACTOR TO PROVIDEINLET PROTECTION AT ALLDOWNSTREAM CATCHBASINS.PERIMETEREROSION CONTROLAT CONSTRUCTIONLIMITS, TYP.PERIMETEREROSION CONTROLAT CONSTRUCTIONLIMITS, TYP.PROVIDE INLET PROTECTIONAT TRENCH DRAIN, TYPCivil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.1SWPPP - PROPOSEDCONDITIONS. .. .. .. .. .. .01" = 20'-0"20'-0"10'-0"NKnow what'sbelow.before you dig.CallR1. RESERVED FOR CITY SPECIFIC EROSION CONTROL NOTES.CITY OF COLUMBIA HEIGHTS EROSION CONTROL NOTES:1. THIS PROJECT IS GREATER THAN ONE ACRE AND WILL REQUIRE ANMPCA NPDES PERMIT. CONTRACTOR IS RESPONSIBLE FOR OBTAININGANY EROSION CONTROL PERMITS REQUIRED BY THE CITY.2. SEE SHEETS SW1.0 - SW1.5 FOR ALL EROSION CONTROL NOTES,DESCRIPTIONS, AND PRACTICES.3. SEE GRADING PLAN FOR ADDITIONAL GRADING AND EROSIONCONTROL NOTES.4. CONTRACTOR IS RESPONSIBLE FOR SWPPP IMPLEMENTATION,INSPECTIONS, AND COMPLIANCE WITH NPDES PERMIT.SWPPP NOTES:LEGEND:EX. 1' CONTOUR ELEVATION INTERVALINLET PROTECTIONSTABILIZED CONSTRUCTION ENTRANCEDRAINAGE ARROW1.0' CONTOUR ELEVATION INTERVALSILT FENCE / BIOROLL - GRADING LIMITEROSION CONTROL BLANKETALL SPECIFIED EROSION AND SEDIMENT CONTROL PRACTICES, ANDMEASURES CONTAINED IN THIS SWPPP ARE THE MINIMUMREQUIREMENTS. ADDITIONAL PRACTICES MAY BE REQUIRED DURINGTHE COURSE OF CONSTRUCTION. Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.2SWPPP - DETAILS. .. .. .. .. .. .OVERFLOW AT TOP OFFILTER ASSEMBLYOVERFLOW IS 12 OF THE CURBBOX HEIGHTHIGH-FLOW FABRICFILTER ASSEMBLY DIAMETER, 6"ON-GRADE 10" AT LOW POINTEXISTING CURB, PLATE, BOX,AND GRATENOTES:1. REPLACE INLET GRATE UPON COMPLETE INSTALLATION OF INLET PROTECTION FABRIC.2. CONTRACTOR SHALL REMOVE ALL ACCUMULATED SEDIMENT AND DEBRIS FROM THE SURFACE OF THE SYSTEMAFTER EACH STORM EVENT AND AT THE COMPLETION OF THE CONTRACT.3. REFERENCE APPLE VALLEY STANDARD PLATE ERO-4C.CURB INLET FILTERN T S1TAMP THE TRENCH FULL OF SOIL.SECURE WITH ROW OF STAPLES,10" SPACING, 4" DOWN FROMTRENCHOVERLAP: BURY UPPER ENDOF LOWER STRIP AS IN 'A'AND 'B'. OVERLAP END OFTOP STRIP 4" AND STAPLE.EROSION STOP: FOLD OF MATTINGBURIED IN SILT TRENCH ANDTAMPED. DOUBLEROW OFSTAPLES.PLACE STAPLES 2 FEET APARTTO KEEP MATTING FIRMLYPRESSED TO SOIL.'D''C''B'BURY THE TOP END OF THEMATTING IN A TRENCH 4" ORMORE IN DEPTHTYPICAL STAPLE #8GAUGE WIRE1 1/2"10"OVERFALL'E''A'NOTE:1. PLACE STAPLES 2 FEET APART TOKEEP MATTING FIRMLY PRESSED TOSOIL.EROSION BLANKETN T S4FILTER FABRIC AS SPECIFIEDEXISTING GROUNDSURFACEDIRECTION OF FLOWWOODEN STAKES 1/2"X2"X16" MIN. PLACED 10' O.C.WHEN INSTALLED ON GROUND. IF INSTALLED ONPVMT. PROVIDE SANDBAGS BEHIND AND ON TOP ATMIN. 10' O.C.8" MIN.SEDIMENT BIO-ROLL / COMPOST FILTER LOGN T SFILLER AS SPECIFIEDNOTE:1. COMPOST FILTER LOGS (BIO ROLLS) SHALL BE FILTREXX EROSION CONTROL SOXX OR APPROVED EQUAL.2. COMPOST FILLER TO BE MADE FROM A COMPOST BLEND 30%-40% GRADE 2 (SPEC 3890) AND 60%-70%PARTIALLY DECOMPOSED WOOD CHIPS, PER MNDOT SPEC 3897.3. FILTER FABRIC SHALL BE GEOTEXTILE KNITTED MATERIAL WITH MAX. OPENINGS OF 3/8".4. IF MULTIPLE ROLLS NEEDED, OVERLAP BY MIN. 12" AT ENDS AND STAKE.5. SILT SHALL BE REMOVED ONCE IT REACHES 80% OF THE HEIGHT OF THE ROLL OR AS DEEMED NECESSARYBY SITE CONTRACTOR TO MAINTAIN PROPER FUNCTION.FILL UPSTREAM BASE EDGE WITH2" OF DIRT OR COMPOST TOEMBED ROLL.2FILTER FABRIC WITH WIRE SUPPORT NETAS SPECIFIED.METAL POST ASSPECIFIED.FILTER FABRIC AS SPECIFIED SECURETO WIRE SUPPORT NET WITH METALCLIPS 12"O.C.SUPPORT NET: 12 GAUGE 4" x 4"WIRE HOOKED ONTOPREFORMED CHANNELS ONPOSTS AS SPECIFIED.EXISTING GROUNDSURFACECARRY WIRE SUPPORT NETDOWN INTO TRENCHDIRECTION OF FLOWANCHOR FABRIC WITHSOIL, TAMP BACKFILLMETAL POSTS 8'-0" O.C.MAX.24" 24" 24"MIN. 6"6"SEDIMENT FENCEN T S3 Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.3SWPPP - NARRATIVE. .. .. .. .. .. .OWNER:TOLLBERG HOMES1428 5TH AVENUEANOKA, MN 55303CONTACT:763-205-2037OWNER INFORMATIONTRAINING SECTION 21PARTY RESPONSIBLE FOR LONG TERM OPERATION AND MAINTENANCE OF PERMANENTSTORM WATER MANAGEMENT SYSTEMPERMANENT STORMWATER MANAGEMENT IS NOT REQUIRED AS PART OF THIS PROJECT TO MEET NPDES PERMIT REQUIREMENTS. THEPROPERTY OWNER IS RESPONSIBLE FOR THE LONG TERM OPERATION AND MAINTENANCE OF THE PROPOSED STORMWATER SYSTEM.AREAS AND QUANTITIES:SWPPP CONTACT PERSONCONTRACTOR:SWPPP INSPECTOR TRAINING:ALL SWPPP INSPECTIONS MUST BE PERFORMED BY APERSON THAT MEETS THE TRAINING REQUIREMENTS OF THENPDES CONSTRUCTION SITE PERMIT.TRAINING CREDENTIALS SHALL BE PROVIDED BY THECONTRACTOR AND KEPT ON SITE WITH THE SWPPPNOTE: QUANTITIES ARE FOR INFORMATIONAL PURPOSES ONLY. CONTRACTOR SHALL DETERMINE FOR THEMSELVES THE EXACTQUANTITIES FOR BIDDING AND CONSTRUCTION.PROJECT NARRATIVE:PROJECT IS A REDEVELOPMENT OF AN EXISTING EMPTY LOT INTO A SENIOR HOUSING FACILITY . SITE AND LANDSCAPE IMPROVEMENTS WILLOCCUR.NATIVE BUFFER NARRATIVE:PRESERVING A 50' NATURAL BUFFER AROUND WATER BODIES IS NOT REQUIRED AS PART OF THIS PROJECT BECAUSE WATER BODIES ARE NOTLOCATED ON SITE.INFILTRATION NARRATIVE:INFILTRATION IS NOT REQUIRED AS PART OF THE PROJECT BECAUSE PERMANENT STORM WATER MANAGEMENT IS NOT REQUIRED.SOIL CONTAMINATION NARRATIVE:SOILS ONSITE HAVE NOT BEEN IDENTIFIED AS CONTAMINATED. AN MPCA SOILS ASSESSMENT WAS COMPLETED AND IT WAS DETERMINED THATTHIS SITE IS APPROPRIATE FOR INFILTRATION.SPECIAL TMDL BMP REQUIREMENTS SITE SPECIFIC (IF REQUIRED):NOT REQUIREDPERMANENT STABILIZATION NOTES SITE SPECIFIC:PERMANENT SEED MIX·FOR THIS PROJECT ALL AREAS THAT ARE NOT TO BE SODDED OR LANDSCAPED SHALL RECEIVE A NATIVE PERMANENT SEED MIX.··AREAS IN BUFFERS AND ADJACENT TO OR IN WET AREAS MNDOT SEED MIX 33-261 (STORMWATER SOUTH AND WEST) AT 35 LBS PERACRE.··DRY AREAS MNDOT SEED MIX 35-221 (DRY PRAIRIE GENERAL) AT 40 LBS PER ACRE.·MAINTENANCE SHALL BE IN ACCORDANCE TO THE MNDOT SEEDING MANUAL.SUPPLEMENTARY SITE SPECIFIC EROSION CONTROL NOTES:THESE NOTES SUPERCEDE ANY GENERAL SWPPP NOTES.THIS PROJECT IS GREATER THAN 1.0 ACRES SO AN NPDES PERMIT IS REQUIRED AND NEEDS TO BE SUBMITTED TO THE MPCA. THECONTRACTOR IS REQUIRED TO FOLLOW THE GUIDELINES IN THE NPDES PERMIT THROUGHOUT CONSTRUCTION.SWPPP ATTACHMENTS (ONLY APPLICABLE IF SITE IS 1 ACRE OR GREATER):CONTRACTOR SHALL OBTAIN A COPY OF THE FOLLOWING SWPPP ATTACHMENTS WHICH ARE A PART OF THE OVERALL SWPPP PACKAGE:ATTACHMENT A. CONSTRUCTION SWPPP TEMPLATE - SITE SPECIFIC SWPPP DOCUMENTATTACHMENT B. CONSTRUCTION STORMWATER INSPECTION CHECKLISTATTACHMENT C. MAINTENANCE PLAN FOR PERMANENT STORM WATER TREATMENT SYSTEMSATTACHMENT D: STORMWATER MANAGEMENT REPORT - ON FILE AT THE OFFICE OF PROJECT ENGINEER. AVAILABLE UPON REQUEST.ATTACHMENT E: GEOTECHNICAL EVALUATION REPORT - ON FILE AT THE OFFICE OF PROJECT ENGINEER. AVAILABLE UPON REQUEST.DESIGN ENGINEER: MATTHEW R. PAVEK P.E.TRAINING COURSE: DESIGN OF SWPPPTRAINING ENTITY: UNIVERSITY OF MINNESOTAINSTRUCTOR: JOHN CHAPMANDATES OF TRAINING COURSE: 5/15/2011 - 5/16/2011TOTAL TRAINING HOURS: 12RE-CERTIFICATION: 3/16/2017 (8 HOURS), EXP. 5/31/2020THE CONTRACTOR AND ALL SUBCONTRACTORS INVOLVED WITH A CONSTRUCTION ACTIVITY THAT DISTURBS SITE SOIL OR WHOIMPLEMENT A POLLUTANT CONTROL MEASURE IDENTIFIED IN THE STORM WATER POLLUTION PREVENTION PLAN (SWPPP) MUSTCOMPLY WITH THE REQUIREMENTS OF THE NATIONAL POLLUTION DISCHARGE ELIMINATION SYSTEM (NPDES) GENERAL PERMIT (DATEDAUGUST 1, 2018 # MNR100001) AND ANY LOCAL GOVERNING AGENCY HAVING JURISDICTION CONCERNING EROSION AND SEDIMENTATIONCONTROL.STORMWATER DISCHARGE DESIGN REQUIREMENTSSWPPPTHE NATURE OF THIS PROJECT WILL BE CONSISTENT WITH WHAT IS REPRESENTED IN THIS SET OF CONSTRUCTION PLANS ANDSPECIFICATIONS. SEE THE SWPPP PLAN SHEETS AND SWPPP NARRATIVE (ATTACHMENT A: CONSTRUCTION SWPPP TEMPLATE) FORADDITIONAL SITE SPECIFIC SWPPP INFORMATION. THE PLANS SHOW LOCATIONS AND TYPES OF ALL TEMPORARY AND PERMANENTEROSION PREVENTION AND SEDIMENT CONTROL BMP'S. STANDARD DETAILS ARE ATTACHED TO THIS SWPPP DOCUMENT.THE INTENDED SEQUENCING OF MAJOR CONSTRUCTION ACTIVITIES IS AS FOLLOWS:1. INSTALL STABILIZED ROCK CONSTRUCTION ENTRANCE2. INSTALLATION OF SILT FENCE AROUND SITE3. INSTALL ORANGE CONSTRUCTION FENCING AROUND INFILTRATION AREAS.4. CLEAR AND GRUB FOR TEMPORARY SEDIMENT BASIN / POND INSTALL5. CONSTRUCT TEMPORARY SEDIMENT BASIN / POND (SECTION 14)6. CLEAR AND GRUB REMAINDER OF SITE7. STRIP AND STOCKPILE TOPSOIL8. ROUGH GRADING OF SITE9. STABILIZE DENUDED AREAS AND STOCKPILES10. INSTALL SANITARY SEWER, WATER MAIN STORM SEWER AND SERVICES11. INSTALL SILT FENCE / INLET PROTECTION AROUND CB'S12. INSTALL STREET SECTION13. INSTALL CURB AND GUTTER14. BITUMINOUS ON STREETS15. FINAL GRADE BOULEVARD, INSTALL SEED AND MULCH16. REMOVE ACCUMULATED SEDIMENT FROM BASIN / POND17. FINAL GRADE POND / INFILTRATION BASINS (DO NOT COMPACT SOILS IN INFILTRATION AREAS.)18. WHEN ALL CONSTRUCTION ACTIVITY IS COMPLETE AND THE SITE IS STABILIZED BY EITHER SEED OR SOD/LANDSCAPING, REMOVESILT FENCE AND RESEED ANY AREAS DISTURBED BY THE REMOVAL.RECORDS RETENTION:THE SWPPP (ORIGINAL OR COPIES) INCLUDING, ALL CHANGES TO IT, AND INSPECTIONS AND MAINTENANCE RECORDS MUST BE KEPT ATTHE SITE DURING CONSTRUCTION BY THE PERMITTEE WHO HAS OPERATIONAL CONTROL OF THAT PORTION OF THE SITE. THE SWPPPCAN BE KEPT IN EITHER THE FIELD OFFICE OR IN AN ON SITE VEHICLE DURING NORMAL WORKING HOURS.ALL OWNER(S) MUST KEEP THE SWPPP, ALONG WITH THE FOLLOWING ADDITIONAL RECORDS, ON FILE FOR THREE (3) YEARS AFTERSUBMITTAL OF THE NOT AS OUTLINED IN SECTION 4. THIS DOES NOT INCLUDE ANY RECORDS AFTER SUBMITTAL OF THE NOT.1.THE FINAL SWPPP;2.ANY OTHER STORMWATER RELATED PERMITS REQUIRED FOR THE PROJECT;3.RECORDS OF ALL INSPECTION AND MAINTENANCE CONDUCTED DURING CONSTRUCTION (SEE SECTION 11, INSPECTIONS ANDMAINTENANCE);4.ALL PERMANENT OPERATION AND MAINTENANCE AGREEMENTS THAT HAVE BEEN IMPLEMENTED, INCLUDING ALL RIGHT OF WAY,CONTRACTS, COVENANTS AND OTHER BINDING REQUIREMENTS REGARDING PERPETUAL MAINTENANCE; AND5.ALL REQUIRED CALCULATIONS FOR DESIGN OF THE TEMPORARY AND PERMANENT STORMWATER MANAGEMENT SYSTEMS.SWPPP IMPLEMENTATION RESPONSIBILITIES:1.THE OWNER AND CONTRACTOR ARE PERMITTEE(S) AS IDENTIFIED BY THE NPDES PERMIT.2.CONTRACTOR SHALL BE RESPONSIBLE FOR ALL ON-SITE IMPLEMENTATION OF THE SWPPP, INCLUDING THE ACTIVITIES OF ALL OFTHE CONTRACTOR'S SUBCONTRACTORS.3.CONTRACTOR SHALL PROVIDE A PERSON(S) KNOWLEDGEABLE AND EXPERIENCED IN THE APPLICATION OF EROSION PREVENTIONAND SEDIMENT CONTROL BMPS TO OVERSEE ALL INSTALLATION AND MAINTENANCE OF BMPS AND IMPLEMENTATION OF THESWPPP.4.CONTRACTOR SHALL PROVIDE PERSON(S) MEETING THE TRAINING REQUIREMENTS OF THE NPDES PERMIT TO CONDUCTINSPECTION AND MAINTENANCE OF ALL EROSION PREVENTION AND SEDIMENT CONTROL BMPS IN ACCORDANCE WITH THEREQUIREMENTS OF THE PERMIT. ONE OF THESE INDIVIDUAL(S) MUST BE AVAILABLE FOR AN ONSITE INSPECTION WITHIN 72 HOURSUPON REQUEST BY MPCA. CONTRACTOR SHALL PROVIDE TRAINING DOCUMENTATION FOR THESE INDIVIDUAL(S) AS REQUIRED BYTHE NPDES PERMIT. THIS TRAINING DOCUMENTATION SHALL BE RECORDED IN OR WITH THE SWPPP BEFORE THE START OFCONSTRUCTION OR AS SOON AS THE PERSONNEL FOR THE PROJECT HAVE BEEN DETERMINED. DOCUMENTATION SHALL INCLUDE:4.1.NAMES OF THE PERSONNEL ASSOCIATED WITH THE PROJECT THAT ARE REQUIRED TO BE TRAINED PER SECTION 21 OFTHE PERMIT.4.2.DATES OF TRAINING AND NAME OF INSTRUCTOR AND ENTITY PROVIDING TRAINING.4.3.CONTENT OF TRAINING COURSE OR WORKSHOP INCLUDING THE NUMBER OF HOURS OF TRAINING.5.FOLLOWING FINAL STABILIZATION AND THE TERMINATION OF COVERAGE FOR THE NPDES PERMIT, THE OWNER IS EXPECTED TOFURNISH LONG TERM OPERATION AND MAINTENANCE (O & M) OF THE PERMANENT STORM WATER MANAGEMENT SYSTEM.CONSTRUCTION ACTIVITY REQUIREMENTSSWPPP AMENDMENTS (SECTION 6):1.ONE OF THE INDIVIDUALS DESCRIBED IN ITEM 21.2.A OR ITEM 21.2.B OR ANOTHER QUALIFIED INDIVIDUAL MUST COMPLETE ALLSWPPP CHANGES. CHANGES INVOLVING THE USE OF A LESS STRINGENT BMP MUST INCLUDE A JUSTIFICATION DESCRIBING HOWTHE REPLACEMENT BMP IS EFFECTIVE FOR THE SITE CHARACTERISTICS.2.PERMITTEES MUST AMEND THE SWPPP TO INCLUDE ADDITIONAL OR MODIFIED BMPS AS NECESSARY TO CORRECT PROBLEMSIDENTIFIED OR ADDRESS SITUATIONS WHENEVER THERE IS A CHANGE IN DESIGN, CONSTRUCTION, OPERATION, MAINTENANCE,WEATHER OR SEASONAL CONDITIONS HAVING A SIGNIFICANT EFFECT ON THE DISCHARGE OF POLLUTANTS TO SURFACE WATERSOR GROUNDWATER.3.PERMITTEES MUST AMEND THE SWPPP TO INCLUDE ADDITIONAL OR MODIFIED BMPS AS NECESSARY TO CORRECT PROBLEMSIDENTIFIED OR ADDRESS SITUATIONS WHENEVER INSPECTIONS OR INVESTIGATIONS BY THE SITE OWNER OR OPERATOR, USEPAOR MPCA OFFICIALS INDICATE THE SWPPP IS NOT EFFECTIVE IN ELIMINATING OR SIGNIFICANTLY MINIMIZING THE DISCHARGE OFPOLLUTANTS TO SURFACE WATERS OR GROUNDWATER OR THE DISCHARGES ARE CAUSING WATER QUALITY STANDARDEXCEEDANCES (E.G., NUISANCE CONDITIONS AS DEFINED IN MINN. R. 7050.0210, SUBP. 2) OR THE SWPPP IS NOT CONSISTENT WITHTHE OBJECTIVES OF A USEPA APPROVED TMDL.BMP SELECTION AND INSTALLATION (SECTION 7):1.PERMITTEES MUST SELECT, INSTALL, AND MAINTAIN THE BMPS IDENTIFIED IN THE SWPPP AND IN THIS PERMIT IN AN APPROPRIATEAND FUNCTIONAL MANNER AND IN ACCORDANCE WITH RELEVANT MANUFACTURER SPECIFICATIONS AND ACCEPTED ENGINEERINGPRACTICES.EROSION PREVENTION (SECTION 8):1.BEFORE WORK BEGINS, PERMITTEES MUST DELINEATE THE LOCATION OF AREAS NOT TO BE DISTURBED.2.PERMITTEES MUST MINIMIZE THE NEED FOR DISTURBANCE OF PORTIONS OF THE PROJECT WITH STEEP SLOPES. WHEN STEEPSLOPES MUST BE DISTURBED, PERMITTEES MUST USE TECHNIQUES SUCH AS PHASING AND STABILIZATION PRACTICES DESIGNEDFOR STEEP SLOPES (E.G., SLOPE DRAINING AND TERRACING).3.PERMITTEES MUST STABILIZE ALL EXPOSED SOIL AREAS, INCLUDING STOCKPILES. STABILIZATION MUST BE INITIATED IMMEDIATELYTO LIMIT SOIL EROSION WHEN CONSTRUCTION ACTIVITY HAS PERMANENTLY OR TEMPORARILY CEASED ON ANY PORTION OF THESITE AND WILL NOT RESUME FOR A PERIOD EXCEEDING 14 CALENDAR DAYS. STABILIZATION MUST BE COMPLETED NO LATER THAN14 CALENDAR DAYS AFTER THE CONSTRUCTION ACTIVITY HAS CEASED. STABILIZATION IS NOT REQUIRED ON CONSTRUCTED BASECOMPONENTS OF ROADS, PARKING LOTS AND SIMILAR SURFACES. STABILIZATION IS NOT REQUIRED ON TEMPORARY STOCKPILESWITHOUT SIGNIFICANT SILT, CLAY OR ORGANIC COMPONENTS (E.G., CLEAN AGGREGATE STOCKPILES, DEMOLITION CONCRETESTOCKPILES, SAND STOCKPILES) BUT PERMITTEES MUST PROVIDE SEDIMENT CONTROLS AT THE BASE OF THE STOCKPILE.4.FOR PUBLIC WATERS THAT THE MINNESOTA DNR HAS PROMULGATED "WORK IN WATER RESTRICTIONS" DURING SPECIFIED FISHSPAWNING TIME FRAMES, PERMITTEES MUST COMPLETE STABILIZATION OF ALL EXPOSED SOIL AREAS WITHIN 200 FEET OF THEWATER'S EDGE, AND THAT DRAIN TO THESE WATERS, WITHIN 24 HOURS DURING THE RESTRICTION PERIOD.5.PERMITTEES MUST STABILIZE THE NORMAL WETTED PERIMETER OF THE LAST 200 LINEAR FEET OF TEMPORARY OR PERMANENTDRAINAGE DITCHES OR SWALES THAT DRAIN WATER FROM THE SITE WITHIN 24 HOURS AFTER CONNECTING TO A SURFACE WATEROR PROPERTY EDGE. PERMITTEES MUST COMPLETE STABILIZATION OF REMAINING PORTIONS OF TEMPORARY OR PERMANENTDITCHES OR SWALES WITHIN 14 CALENDAR DAYS AFTER CONNECTING TO A SURFACE WATER OR PROPERTY EDGE ANDCONSTRUCTION IN THAT PORTION OF THE DITCH TEMPORARILY OR PERMANENTLY CEASES.6.TEMPORARY OR PERMANENT DITCHES OR SWALES BEING USED AS A SEDIMENT CONTAINMENT SYSTEM DURING CONSTRUCTION(WITH PROPERLY DESIGNED ROCK-DITCH CHECKS, BIO ROLLS, SILT DIKES, ETC.) DO NOT NEED TO BE STABILIZED. PERMITTEESMUST STABILIZE THESE AREAS WITHIN 24 HOURS AFTER THEIR USE AS A SEDIMENT CONTAINMENT SYSTEM CEASES7.PERMITTEES MUST NOT USE MULCH, HYDROMULCH, TACKIFIER, POLYACRYLAMIDE OR SIMILAR EROSION PREVENTION PRACTICESWITHIN ANY PORTION OF THE NORMAL WETTED PERIMETER OF A TEMPORARY OR PERMANENT DRAINAGE DITCH OR SWALESECTION WITH A CONTINUOUS SLOPE OF GREATER THAN 2 PERCENT.8.PERMITTEES MUST PROVIDE TEMPORARY OR PERMANENT ENERGY DISSIPATION AT ALL PIPE OUTLETS WITHIN 24 HOURS AFTERCONNECTION TO A SURFACE WATER OR PERMANENT STORMWATER TREATMENT SYSTEM.9.PERMITTEES MUST NOT DISTURB MORE LAND (I.E., PHASING) THAN CAN BE EFFECTIVELY INSPECTED AND MAINTAINED INACCORDANCE WITH SECTION 11.SEDIMENT CONTROL (SECTION 9):1.PERMITTEES MUST ESTABLISH SEDIMENT CONTROL BMPS ON ALL DOWNGRADIENT PERIMETERS OF THE SITE AND DOWNGRADIENTAREAS OF THE SITE THAT DRAIN TO ANY SURFACE WATER, INCLUDING CURB AND GUTTER SYSTEMS. PERMITTEES MUST LOCATESEDIMENT CONTROL PRACTICES UPGRADIENT OF ANY BUFFER ZONES. PERMITTEES MUST INSTALL SEDIMENT CONTROLPRACTICES BEFORE ANY UPGRADIENT LAND-DISTURBING ACTIVITIES BEGIN AND MUST KEEP THE SEDIMENT CONTROL PRACTICESIN PLACE UNTIL THEY ESTABLISH PERMANENT COVER.2.IF DOWNGRADIENT SEDIMENT CONTROLS ARE OVERLOADED, BASED ON FREQUENT FAILURE OR EXCESSIVE MAINTENANCEREQUIREMENTS, PERMITTEES MUST INSTALL ADDITIONAL UPGRADIENT SEDIMENT CONTROL PRACTICES OR REDUNDANT BMPS TOELIMINATE THE OVERLOADING AND AMEND THE SWPPP TO IDENTIFY THESE ADDITIONAL PRACTICES AS REQUIRED IN ITEM 6.3.3.TEMPORARY OR PERMANENT DRAINAGE DITCHES AND SEDIMENT BASINS DESIGNED AS PART OF A SEDIMENT CONTAINMENTSYSTEM (E.G., DITCHES WITH ROCK-CHECK DAMS) REQUIRE SEDIMENT CONTROL PRACTICES ONLY AS APPROPRIATE FOR SITECONDITIONS.4.A FLOATING SILT CURTAIN PLACED IN THE WATER IS NOT A SEDIMENT CONTROL BMP TO SATISFY ITEM 9.2 EXCEPT WHEN WORKINGON A SHORELINE OR BELOW THE WATERLINE. IMMEDIATELY AFTER THE SHORT TERM CONSTRUCTION ACTIVITY (E.G.,INSTALLATION OF RIP RAP ALONG THE SHORELINE) IN THAT AREA IS COMPLETE, PERMITTEES MUST INSTALL AN UPLANDPERIMETER CONTROL PRACTICE IF EXPOSED SOILS STILL DRAIN TO A SURFACE WATER.5.PERMITTEES MUST RE-INSTALL ALL SEDIMENT CONTROL PRACTICES ADJUSTED OR REMOVED TO ACCOMMODATE SHORT-TERMACTIVITIES SUCH AS CLEARING OR GRUBBING, OR PASSAGE OF VEHICLES, IMMEDIATELY AFTER THE SHORT-TERM ACTIVITY ISCOMPLETED. PERMITTEES MUST RE-INSTALL SEDIMENT CONTROL PRACTICES BEFORE THE NEXT PRECIPITATION EVENT EVEN IFTHE SHORT-TERM ACTIVITY IS NOT COMPLETE.6.PERMITTEES MUST PROTECT ALL STORM DRAIN INLETS USING APPROPRIATE BMPS DURING CONSTRUCTION UNTIL THEYESTABLISH PERMANENT COVER ON ALL AREAS WITH POTENTIAL FOR DISCHARGING TO THE INLET.7.PERMITTEES MAY REMOVE INLET PROTECTION FOR A PARTICULAR INLET IF A SPECIFIC SAFETY CONCERN (E.G. STREETFLOODING/FREEZING) IS IDENTIFIED BY THE PERMITTEES OR THE JURISDICTIONAL AUTHORITY (E.G.,CITY/COUNTY/TOWNSHIP/MINNESOTA DEPARTMENT OF TRANSPORTATION ENGINEER). PERMITTEES MUST DOCUMENT THE NEEDFOR REMOVAL IN THE SWPPP.8.PERMITTEES MUST PROVIDE SILT FENCE OR OTHER EFFECTIVE SEDIMENT CONTROLS AT THE BASE OF STOCKPILES ON THEDOWNGRADIENT PERIMETER.9.PERMITTEES MUST LOCATE STOCKPILES OUTSIDE OF NATURAL BUFFERS OR SURFACE WATERS, INCLUDING STORMWATERCONVEYANCES SUCH AS CURB AND GUTTER SYSTEMS UNLESS THERE IS A BYPASS IN PLACE FOR THE STORMWATER. 10. PERMITTEES MUST INSTALL A VEHICLE TRACKING BMP TO MINIMIZE THE TRACK OUT OF SEDIMENT FROM THE CONSTRUCTION SITEOR ONTO PAVED ROADS WITHIN THE SITE. 11. PERMITTEES MUST USE STREET SWEEPING IF VEHICLE TRACKING BMPS ARE NOT ADEQUATE TO PREVENT SEDIMENT TRACKINGONTO THE STREET. 12. PERMITTEES MUST INSTALL TEMPORARY SEDIMENT BASINS AS REQUIRED IN SECTION 14. 13. IN ANY AREAS OF THE SITE WHERE FINAL VEGETATIVE STABILIZATION WILL OCCUR, PERMITTEES MUST RESTRICT VEHICLE ANDEQUIPMENT USE TO MINIMIZE SOIL COMPACTION. 14. PERMITTEES MUST PRESERVE TOPSOIL ON THE SITE, UNLESS INFEASIBLE. 15. PERMITTEES MUST DIRECT DISCHARGES FROM BMPS TO VEGETATED AREAS UNLESS INFEASIBLE. 16. PERMITTEES MUST PRESERVE A 50 FOOT NATURAL BUFFER OR, IF A BUFFER IS INFEASIBLE ON THE SITE, PROVIDE REDUNDANT(DOUBLE) PERIMETER SEDIMENT CONTROLS WHEN A SURFACE WATER IS LOCATED WITHIN 50 FEET OF THE PROJECT'S EARTHDISTURBANCES AND STORMWATER FLOWS TO THE SURFACE WATER. PERMITTEES MUST INSTALL PERIMETER SEDIMENTCONTROLS AT LEAST 5 FEET APART UNLESS LIMITED BY LACK OF AVAILABLE SPACE. NATURAL BUFFERS ARE NOT REQUIREDADJACENT TO ROAD DITCHES, JUDICIAL DITCHES, COUNTY DITCHES, STORMWATER CONVEYANCE CHANNELS, STORM DRAININLETS, AND SEDIMENT BASINS. IF PRESERVING THE BUFFER IS INFEASIBLE, PERMITTEES MUST DOCUMENT THE REASONS IN THESWPPP. SHEET PILING IS A REDUNDANT PERIMETER CONTROL IF INSTALLED IN A MANNER THAT RETAINS ALL STORMWATER. 17. PERMITTEES MUST USE POLYMERS, FLOCCULANTS, OR OTHER SEDIMENTATION TREATMENT CHEMICALS IN ACCORDANCE WITHACCEPTED ENGINEERING PRACTICES, DOSING SPECIFICATIONS AND SEDIMENT REMOVAL DESIGN SPECIFICATIONS PROVIDED BYTHE MANUFACTURER OR SUPPLIER. THE PERMITTEES MUST USE CONVENTIONAL EROSION AND SEDIMENT CONTROLS PRIOR TOCHEMICAL ADDITION AND MUST DIRECT TREATED STORMWATER TO A SEDIMENT CONTROL SYSTEM FOR FILTRATION ORSETTLEMENT OF THE FLOC PRIOR TO DISCHARGE.DEWATERING AND BASIN DRAINING (SECTION 10):1.PERMITTEES MUST DISCHARGE TURBID OR SEDIMENT-LADEN WATERS RELATED TO DEWATERING OR BASIN DRAINING (E.G.,PUMPED DISCHARGES, TRENCH/DITCH CUTS FOR DRAINAGE) TO A TEMPORARY OR PERMANENT SEDIMENT BASIN ON THE PROJECTSITE UNLESS INFEASIBLE. PERMITTEES MAY DEWATER TO SURFACE WATERS IF THEY VISUALLY CHECK TO ENSURE ADEQUATETREATMENT HAS BEEN OBTAINED AND NUISANCE CONDITIONS (SEE MINN. R. 7050.0210, SUBP. 2) WILL NOT RESULT FROM THEDISCHARGE. IF PERMITTEES CANNOT DISCHARGE THE WATER TO A SEDIMENTATION BASIN PRIOR TO ENTERING A SURFACEWATER, PERMITTEES MUST TREAT IT WITH APPROPRIATE BMPS SUCH THAT THE DISCHARGE DOES NOT ADVERSELY AFFECT THESURFACE WATER OR DOWNSTREAM PROPERTIES.2.IF PERMITTEES MUST DISCHARGE WATER CONTAINING OIL OR GREASE, THEY MUST USE AN OIL-WATER SEPARATOR OR SUITABLEFILTRATION DEVICE (E.G., CARTRIDGE FILTERS, ABSORBENTS PADS) PRIOR TO DISCHARGE.3.PERMITTEES MUST DISCHARGE ALL WATER FROM DEWATERING OR BASIN-DRAINING ACTIVITIES IN A MANNER THAT DOES NOTCAUSE EROSION OR SCOUR IN THE IMMEDIATE VICINITY OF DISCHARGE POINTS OR INUNDATION OF WETLANDS IN THE IMMEDIATEVICINITY OF DISCHARGE POINTS THAT CAUSES SIGNIFICANT ADVERSE IMPACT TO THE WETLAND.4.IF PERMITTEES USE FILTERS WITH BACKWASH WATER, THEY MUST HAUL THE BACKWASH WATER AWAY FOR DISPOSAL, RETURNTHE BACKWASH WATER TO THE BEGINNING OF THE TREATMENT PROCESS, OR INCORPORATE THE BACKWASH WATER INTO THESITE IN A MANNER THAT DOES NOT CAUSE EROSION.INSPECTIONS AND MAINTENANCE (SECTION 11):1.PERMITTEES MUST ENSURE A TRAINED PERSON, AS IDENTIFIED IN ITEM 21.2.B, WILL INSPECT THE ENTIRE CONSTRUCTION SITE ATLEAST ONCE EVERY SEVEN (7) DAYS DURING ACTIVE CONSTRUCTION AND WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATERTHAN 1/2 INCH IN 24 HOURS.2.PERMITTEES MUST INSPECT AND MAINTAIN ALL PERMANENT STORMWATER TREATMENT BMPS.3.PERMITTEES MUST INSPECT ALL EROSION PREVENTION AND SEDIMENT CONTROL BMPS AND POLLUTION PREVENTIONMANAGEMENT MEASURES TO ENSURE INTEGRITY AND EFFECTIVENESS. PERMITTEES MUST REPAIR, REPLACE OR SUPPLEMENTALL NONFUNCTIONAL BMPS WITH FUNCTIONAL BMPS BY THE END OF THE NEXT BUSINESS DAY AFTER DISCOVERY UNLESSANOTHER TIME FRAME IS SPECIFIED IN ITEM 11.5 OR 11.6. PERMITTEES MAY TAKE ADDITIONAL TIME IF FIELD CONDITIONS PREVENTACCESS TO THE AREA.4.DURING EACH INSPECTION, PERMITTEES MUST INSPECT SURFACE WATERS, INCLUDING DRAINAGE DITCHES AND CONVEYANCESYSTEMS BUT NOT CURB AND GUTTER SYSTEMS, FOR EVIDENCE OF EROSION AND SEDIMENT DEPOSITION. PERMITTEES MUSTREMOVE ALL DELTAS AND SEDIMENT DEPOSITED IN SURFACE WATERS, INCLUDING DRAINAGE WAYS, CATCH BASINS, AND OTHERDRAINAGE SYSTEMS AND RESTABILIZE THE AREAS WHERE SEDIMENT REMOVAL RESULTS IN EXPOSED SOIL. PERMITTEES MUSTCOMPLETE REMOVAL AND STABILIZATION WITHIN SEVEN (7) CALENDAR DAYS OF DISCOVERY UNLESS PRECLUDED BY LEGAL,REGULATORY, OR PHYSICAL ACCESS CONSTRAINTS. PERMITTEES MUST USE ALL REASONABLE EFFORTS TO OBTAIN ACCESS. IFPRECLUDED, REMOVAL AND STABILIZATION MUST TAKE PLACE WITHIN SEVEN (7) DAYS OF OBTAINING ACCESS. PERMITTEES ARERESPONSIBLE FOR CONTACTING ALL LOCAL, REGIONAL, STATE AND FEDERAL AUTHORITIES AND RECEIVING ANY APPLICABLEPERMITS, PRIOR TO CONDUCTING ANY WORK IN SURFACE WATERS.5.PERMITTEES MUST INSPECT CONSTRUCTION SITE VEHICLE EXIT LOCATIONS, STREETS AND CURB AND GUTTER SYSTEMS WITHINAND ADJACENT TO THE PROJECT FOR SEDIMENTATION FROM EROSION OR TRACKED SEDIMENT FROM VEHICLES. PERMITTEESMUST REMOVE SEDIMENT FROM ALL PAVED SURFACES WITHIN ONE (1) CALENDAR DAY OF DISCOVERY OR, IF APPLICABLE, WITHINA SHORTER TIME TO AVOID A SAFETY HAZARD TO USERS OF PUBLIC STREETS.6.PERMITTEES MUST REPAIR, REPLACE OR SUPPLEMENT ALL PERIMETER CONTROL DEVICES WHEN THEY BECOME NONFUNCTIONALOR THE SEDIMENT REACHES 1/2 OF THE HEIGHT OF THE DEVICE.7.PERMITTEES MUST DRAIN TEMPORARY AND PERMANENT SEDIMENTATION BASINS AND REMOVE THE SEDIMENT WHEN THE DEPTHOF SEDIMENT COLLECTED IN THE BASIN REACHES 1/2 THE STORAGE VOLUME.8.PERMITTEES MUST ENSURE THAT AT LEAST ONE INDIVIDUAL PRESENT ON THE SITE (OR AVAILABLE TO THE PROJECT SITE INTHREE (3) CALENDAR DAYS) IS TRAINED IN THE JOB DUTIES DESCRIBED IN ITEM 21.2.B.9.PERMITTEES MAY ADJUST THE INSPECTION SCHEDULE DESCRIBED IN ITEM 11.2 AS FOLLOWS:a. INSPECTIONS OF AREAS WITH PERMANENT COVER CAN BE REDUCED TO ONCE PER MONTH, EVEN IF CONSTRUCTION ACTIVITYCONTINUES ON OTHER PORTIONS OF THE SITE; ORb.WHERE SITES HAVE PERMANENT COVER ON ALL EXPOSED SOIL AND NO CONSTRUCTION ACTIVITY IS OCCURRING ANYWHEREON THE SITE, INSPECTIONS CAN BE REDUCED TO ONCE PER MONTH AND, AFTER 12 MONTHS, MAY BE SUSPENDEDCOMPLETELY UNTIL CONSTRUCTION ACTIVITY RESUMES. THE MPCA MAY REQUIRE INSPECTIONS TO RESUME IF CONDITIONSWARRANT; ORc.WHERE CONSTRUCTION ACTIVITY HAS BEEN SUSPENDED DUE TO FROZEN GROUND CONDITIONS, INSPECTIONS MAY BESUSPENDED. INSPECTIONS MUST RESUME WITHIN 24 HOURS OF RUNOFF OCCURRING, OR UPON RESUMING CONSTRUCTION,WHICHEVER COMES FIRST. 10. PERMITTEES MUST RECORD ALL INSPECTIONS AND MAINTENANCE ACTIVITIES WITHIN 24 HOURS OF BEING CONDUCTED ANDTHESE RECORDS MUST BE RETAINED WITH THE SWPPP. THESE RECORDS MUST INCLUDE:a.DATE AND TIME OF INSPECTIONS; ANDb.NAME OF PERSONS CONDUCTING INSPECTIONS; ANDc.ACCURATE FINDINGS OF INSPECTIONS, INCLUDING THE SPECIFIC LOCATION WHERE CORRECTIVE ACTIONS ARE NEEDED; ANDd.CORRECTIVE ACTIONS TAKEN (INCLUDING DATES, TIMES, AND PARTY COMPLETING MAINTENANCE ACTIVITIES); ANDe.DATE OF ALL RAINFALL EVENTS GREATER THAN 1/2 INCHES IN 24 HOURS, AND THE AMOUNT OF RAINFALL FOR EACH EVENT.PERMITTEES MUST OBTAIN RAINFALL AMOUNTS BY EITHER A PROPERLY MAINTAINED RAIN GAUGE INSTALLED ONSITE, AWEATHER STATION THAT IS WITHIN ONE (1) MILE OF YOUR LOCATION, OR A WEATHER REPORTING SYSTEM THAT PROVIDESSITE SPECIFIC RAINFALL DATA FROM RADAR SUMMARIES; ANDf.IF PERMITTEES OBSERVE A DISCHARGE DURING THE INSPECTION, THEY MUST RECORD AND SHOULD PHOTOGRAPH ANDDESCRIBE THE LOCATION OF THE DISCHARGE (I.E., COLOR, ODOR, SETTLED OR SUSPENDED SOLIDS, OIL SHEEN, AND OTHEROBVIOUS INDICATORS OF POLLUTANTS); ANDg.ANY AMENDMENTS TO THE SWPPP PROPOSED AS A RESULT OF THE INSPECTION MUST BE DOCUMENTED AS REQUIRED INSECTION 6 WITHIN SEVEN (7) CALENDAR DAYS.POLLUTION PREVENTION MANAGEMENT (SECTION 12):1.PERMITTEES MUST PLACE BUILDING PRODUCTS AND LANDSCAPE MATERIALS UNDER COVER (E.G., PLASTIC SHEETING ORTEMPORARY ROOFS) OR PROTECT THEM BY SIMILARLY EFFECTIVE MEANS DESIGNED TO MINIMIZE CONTACT WITH STORMWATER.PERMITTEES ARE NOT REQUIRED TO COVER OR PROTECT PRODUCTS WHICH ARE EITHER NOT A SOURCE OF CONTAMINATION TOSTORMWATER OR ARE DESIGNED TO BE EXPOSED TO STORMWATER.2.PERMITTEES MUST PLACE PESTICIDES, FERTILIZERS AND TREATMENT CHEMICALS UNDER COVER (E.G., PLASTIC SHEETING ORTEMPORARY ROOFS) OR PROTECT THEM BY SIMILARLY EFFECTIVE MEANS DESIGNED TO MINIMIZE CONTACT WITH STORMWATER.3.PERMITTEES MUST STORE HAZARDOUS MATERIALS AND TOXIC WASTE, (INCLUDING OIL, DIESEL FUEL, GASOLINE, HYDRAULICFLUIDS, PAINT SOLVENTS, PETROLEUM-BASED PRODUCTS, WOOD PRESERVATIVES, ADDITIVES, CURING COMPOUNDS, AND ACIDS)IN SEALED CONTAINERS TO PREVENT SPILLS, LEAKS OR OTHER DISCHARGE. STORAGE AND DISPOSAL OF HAZARDOUS WASTEMATERIALS MUST BE IN COMPLIANCE WITH MINN. R. CH. 7045 INCLUDING SECONDARY CONTAINMENT AS APPLICABLE.4.PERMITTEES MUST PROPERLY STORE, COLLECT AND DISPOSE SOLID WASTE IN COMPLIANCE WITH MINN. R. CH. 7035.5.PERMITTEES MUST POSITION PORTABLE TOILETS SO THEY ARE SECURE AND WILL NOT TIP OR BE KNOCKED OVER. PERMITTEESMUST PROPERLY DISPOSE SANITARY WASTE IN ACCORDANCE WITH MINN. R. CH. 7041.6.PERMITTEES MUST TAKE REASONABLE STEPS TO PREVENT THE DISCHARGE OF SPILLED OR LEAKED CHEMICALS, INCLUDING FUEL,FROM ANY AREA WHERE CHEMICALS OR FUEL WILL BE LOADED OR UNLOADED INCLUDING THE USE OF DRIP PANS ORABSORBENTS UNLESS INFEASIBLE. PERMITTEES MUST ENSURE ADEQUATE SUPPLIES ARE AVAILABLE AT ALL TIMES TO CLEAN UPDISCHARGED MATERIALS AND THAT AN APPROPRIATE DISPOSAL METHOD IS AVAILABLE FOR RECOVERED SPILLED MATERIALS.PERMITTEES MUST REPORT AND CLEAN UP SPILLS IMMEDIATELY AS REQUIRED BY MINN. STAT. 115.061, USING DRY CLEAN UPMEASURES WHERE POSSIBLE.7.PERMITTEES MUST LIMIT VEHICLE EXTERIOR WASHING AND EQUIPMENT TO A DEFINED AREA OF THE SITE. PERMITTEES MUSTCONTAIN RUNOFF FROM THE WASHING AREA IN A SEDIMENT BASIN OR OTHER SIMILARLY EFFECTIVE CONTROLS AND MUSTDISPOSE WASTE FROM THE WASHING ACTIVITY PROPERLY. PERMITTEES MUST PROPERLY USE AND STORE SOAPS, DETERGENTS,OR SOLVENTS.8.PERMITTEES MUST PROVIDE EFFECTIVE CONTAINMENT FOR ALL LIQUID AND SOLID WASTES GENERATED BY WASHOUTOPERATIONS (E.G., CONCRETE, STUCCO, PAINT, FORM RELEASE OILS, CURING COMPOUNDS AND OTHER CONSTRUCTIONMATERIALS) RELATED TO THE CONSTRUCTION ACTIVITY. PERMITTEES MUST PREVENT LIQUID AND SOLID WASHOUT WASTES FROMCONTACTING THE GROUND AND MUST DESIGN THE CONTAINMENT SO IT DOES NOT RESULT IN RUNOFF FROM THE WASHOUTOPERATIONS OR AREAS. PERMITTEES MUST PROPERLY DISPOSE LIQUID AND SOLID WASTES IN COMPLIANCE WITH MPCA RULES.PERMITTEES MUST INSTALL A SIGN INDICATING THE LOCATION OF THE WASHOUT FACILITY.PERMIT TERMINATION (SECTION 4 AND SECTION 13):1.PERMITTEES MUST SUBMIT A NOT WITHIN 30 DAYS AFTER ALL TERMINATION CONDITIONS LISTED IN SECTION 13 ARE COMPLETE.2.PERMITTEES MUST SUBMIT A NOT WITHIN 30 DAYS AFTER SELLING OR OTHERWISE LEGALLY TRANSFERRING THE ENTIRE SITE,INCLUDING PERMIT RESPONSIBILITY FOR ROADS (E.G., STREET SWEEPING) AND STORMWATER INFRASTRUCTURE FINAL CLEANOUT, OR TRANSFERRING PORTIONS OF A SITE TO ANOTHER PARTY. THE PERMITTEES' COVERAGE UNDER THIS PERMITTERMINATES AT MIDNIGHT ON THE SUBMISSION DATE OF THE NOT.3.PERMITTEES MUST COMPLETE ALL CONSTRUCTION ACTIVITY AND MUST INSTALL PERMANENT COVER OVER ALL AREAS PRIOR TOSUBMITTING THE NOT. VEGETATIVE COVER MUST CONSIST OF A UNIFORM PERENNIAL VEGETATION WITH A DENSITY OF 70PERCENT OF ITS EXPECTED FINAL GROWTH. VEGETATION IS NOT REQUIRED WHERE THE FUNCTION OF A SPECIFIC AREA DICTATESNO VEGETATION, SUCH AS IMPERVIOUS SURFACES OR THE BASE OF A SAND FILTER.4.PERMITTEES MUST CLEAN THE PERMANENT STORMWATER TREATMENT SYSTEM OF ANY ACCUMULATED SEDIMENT AND MUSTENSURE THE SYSTEM MEETS ALL APPLICABLE REQUIREMENTS IN SECTION 15 THROUGH 19 AND IS OPERATING AS DESIGNED.5.PERMITTEES MUST REMOVE ALL SEDIMENT FROM CONVEYANCE SYSTEMS PRIOR TO SUBMITTING THE NOT.6.PERMITTEES MUST REMOVE ALL TEMPORARY SYNTHETIC EROSION PREVENTION AND SEDIMENT CONTROL BMPS PRIOR TOSUBMITTING THE NOT. PERMITTEES MAY LEAVE BMPS DESIGNED TO DECOMPOSE ON-SITE IN PLACE.7.FOR RESIDENTIAL CONSTRUCTION ONLY, PERMIT COVERAGE TERMINATES ON INDIVIDUAL LOTS IF THE STRUCTURES ARE FINISHEDAND TEMPORARY EROSION PREVENTION AND DOWNGRADIENT PERIMETER CONTROL IS COMPLETE, THE RESIDENCE SELLS TO THEHOMEOWNER, AND THE PERMITTEE DISTRIBUTES THE MPCA'S "HOMEOWNER FACT SHEET" TO THE HOMEOWNER.8.FOR CONSTRUCTION PROJECTS ON AGRICULTURAL LAND (E.G., PIPELINES ACROSS CROPLAND), PERMITTEES MUST RETURN THEDISTURBED LAND TO ITS PRECONSTRUCTION AGRICULTURAL USE PRIOR TO SUBMITTING THE NOT.SEED NOTES:ALL SEED MIXES AND APPLICATION SHALL BE IN ACCORDANCE WITH THE MNDOT SEEDING MANUAL.GENERAL RECOMMENDATIONS:THE CONTRACTOR IS RESPONSIBLE TO SALVAGE AND PRESERVE EXISTING TOPSOIL NECESSARY FOR FINAL STABILIZATION AND TOALSO MINIMIZE COMPACTION IN ALL LANDSCAPE AREAS. IMMEDIATELY BEFORE SEEDING THE SOIL SHALL BE TILLED TO A MINIMUMDEPTH OF 3 INCHES.TEMPORARY EROSION CONTROL SEEDING, MULCHING & BLANKET.SEED·TEMPORARY SEED SHALL BE MNDOT SEED MIX 21-112 (WINTER WHEAT COVER CROP) FOR WINTER AND 21-111 (OATS COVER CROP)FOR SPRING/SUMMER APPLICATIONS. BOTH SEED MIXES SHALL BE APPLIED AT A SEEDING RATE OF 100 LBS/ACRE.MULCH·IMMEDIATELY AFTER SEEDING, WITHIN 24 HOURS, MNDOT TYPE 1 MULCH SHOULD BE APPLIED TO PROTECT AND ENHANCE SEEDGERMINATION. MULCH SHALL BE APPLIED AT 90% COVERAGE (2 TONS PER ACRE OF STRAW MULCH)SLOPES·3:1 (HORIZ/VERT.) OR FLATTER MUCH SHALL BE COVERED WITH MULCH·SLOPES STEEPER THAN 3:1 OR DITCH BOTTOMS SHALL BE COVERED WITH EROSION CONTROL BLANKET.·SEE PLAN FOR MORE DETAILED DITCH AND STEEP SLOPE EROSION CONTROL TREATMENTS. Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.4SWPPP - ATTACHMENTS. .. .. .. .. .. .ATTACHMENT A: SITE SPECIFIC SWPPP DOCUMENTGENERAL SITE INFORMATION (III.A)1. DESCRIBE THE LOCATION AND TYPE OF ALL TEMPORARY AND PERMANENT EROSION PREVENTION AND SEDIMENT CONTROL BEST MANAGEMENT PRACTICIES (BMP'S). INCLUDE THE TIMING FOR INSTALLATION AND PROCEDURESUSED TO ESTABLISH ADDITIONAL TEMPORARY BMP'S AS NECESSARY. (III.A.4.A)THE PROJECT IS PROTECTED BY TWO (W) MAIN BMP'S, SILT FENCE AND INLET PROTECTION DEVICES. THE SILT FENCE WILL BE INSTALLED AT THE DOWNHILL LOCATIONS OF THE SITE AND MONITORED AS NECESSARY. INLETPROTECTION DEVIDES WILL BE INSTALLED IN ALL CATCH BASINS ON THE SITE AND ANY OFF SITE THAT WILL RECEIVE STORMWATER RUNOFF FROM THIS SITE. AS THE PROJECT PROGRESSES ADDITIONAL BMP'S SUCH AS EROSIONCONTROL BLANKET MAY BE UTILITZED.2. ATTACH TO THIS SWPPP A TABLE WITH THE ANTICIPATED QUANITITIES FOR THE LIFE OF THE PROJECT FOR ALL EROSION PREVENTION AND SEDIMENT CONTROL BMP'S (III.A.4.B) SEE PAGE SW1.33. ATTACH TO THIS SWPPP A SITE MAP THAT INCLUDES THE FOLLOWING FEATURES (III.A.3.B-F):EXIST AND FINAL GRADES, INCLUDING DIVIDING LINES AND DIRECTION OF FLOW FOR ALL PRE AND POST-CONSTRUCTION STORMRWATER RUNOFF DRAINAGE AREAS LOCATED WITHIN THE PROJECT LIMITS.LOCATIONS OF IMPERVIOUS SURFACES AND SOIL TYPES.·EXISTING AND FINAL GRADES, INCLUDING DIVIDING LINES AND DIRECTION OF FLOW FOR ALL PRE AND POST-CONSTRUCTION STORMWATER RUNOFF DRAINAGE AREAS LOCATED WITHIN PROJECT LIMITS.·LOCATIONS OF AREAS NOT TO BE DISTRUBED.·LOCATION OF AREAS OF PHASED CONSTRUCTION.·ALL SURFACE WATERS AND EXISTING WETLANDS WITHIN ONE MILE FROM THE PROJECT BOUNDARIES THAT WILL RECEIVE STORMWATER RUNOFF FROM THE SITE (IDENTIFIABLE ON MAPS SUCH AS USGS 7.5 MINUTEQUADRANGLE MAPS OR EQUIVALENT. WHERE SURFACE WATERS RECEIVING RUNOFF ASSOCIATED WITH CONSTRUCTION ACTIVITY WILL NOT FIT ON THE PLAN SHEET, THEY MUST BE IDENTIFIED WITH AN ARROW,INDICATING BOTH DIRECTION AND DISTANCE TO THE SURFACE WATER.·METHODS TO BE USED FOR FINAL STABILIZATION OF ALL EXPOSED SOIL AREA4. WERE STORMWATER MITIGATION MEASURES REQUIRED AS THE RESULT OF AN ENVIRONMENTAL, ARCHAEOLOGICAL, OR OTHER REQUIRED LOCAL, STATE OR FEDERAL REVIEW OF THE PROJECT? NOIF YES, DESCRIBE HOW THESE MEASURES WERE ADDRESSED IN THE SWPPP. (III.A.6)N/A5. IS THE PROJECT LOCATED IN A KARST AREA SUCH THAT ADDITIONAL MEASURES WOULD BE NECESSARY OT PROJECT DRINKING WATER SUPPLY MANAGEMENT AREAS AS DESCRIBED IN MINN. R. CHAPTERS 7050 AND 7060? NOIF YES, DESCRIBE THE ADDITIONAL MEASURES TO BE USED. (III.A.7)N/A6. DOES THE SITE DISCHARGE TO A CALCEREOUS FEN LISTED IN MINN. R. 7050.0180, SUBP. 6 B? NOIF YES, A LETTER OF APPROVAL FROM THE MINNESOTA DEPARTMENT OF NATURAL RESOURCES MUST BE OBTAINED PRIOR TO APPLICATION FOR THIS PERMIT. (PART I B.6 AND PART III.A.8)7. DOES THE SITE DISCHARGE TO A WATER THAT IS LISTED AS IMPARED FOR THE FOLLOWING POLLUTANT(S) OR STRESSOR(S): PHOSPHORUS, TURBIDITY, DISSOLVED OXYGEN OR BIOTIC IMPAIRMENT? USE THE SPECIAL ANDIMPAIRED WATERS SEARCH TOOL AT: WWW.PCA.STATE.MN.US/WATER/STORMWATER/STORMWATER-C.HTMLN/AIF NO, SKIP TO TRAININGDOES THE IMPAIRED WATER HAVE AN APPROVED TOTAL MAXIMUM DAILY LOADS (TMDL) WITH AN APPROVED WASTE LOAD ALLOCATION FOR CONSTRUCTION ACTIVITY? NOIF YES:A. LIST THE RECEIVING WATER, THE AREAS OF THE SITE DISCHARGING TO IT, AND THE POLLUTANT(S) IDENTIFIED IN THE TMDL.B. LIST THE BMP'S AND ANY OTHER SPECIFIC CONSTRUCTION STORMWATER RELATED IMPLEMENTATION ACTIVITIES IDENTIFIED IN THE TMDL.IF THE SITE HAS A DISCHARGE POINT WITHIN ONE MILE OF THE IMPAIRED WATER AND THE WATER FLOWS TO THE IMPAIRED WATER BUT NO SPECIFIC BMPS FOR CONSTRUCTION ARE IDENTIFIED IN THE TMDL, THE ADDITIONALBMPS IN APPENDIX A (C.1, C.2, C.3 & (C.4-TROUT STREAM)) MUST BE ADDED TO THE SWPPP AND IMPLEMENTED. (III.A.7). THE ADDITIONAL BMPS ONLY APPLY TO THOSE PORTIONS OF THE PROJECT THAT DRAIN TO ONE OF THEIDENTIFIED DISCHARGE POINTS.N/A8. IDENTIFY ADJACENT PUBLIC WATERS WHERE THE MINNESOTA DEPARTMENT OF NATURAL RESOURCES (DNR) HAS DECLARED “WORK IN WATER RESTRICTIONS” DURING FISH SPAWNING TIMEFRAMESN/ASELECTION OF A PERMANENT STORMWATER MANAGEMENT SYSTEM (III.D.)1. WILL THE PROJECT CREATE A NEW CUMULATIVE IMPERVIOUS SURFACE GREATER THAN OR EQUAL TO ONE ACRE? YESIF YES, A WATER QUALITY VOLUME OF ONE INCH OF RUNOFF FROM THE CUMULATIVE NEW IMPERVIOUS SURFACES MUST BE RETAINED ON SITE (SEE PART III.D OF THE PERMIT) THROUGH INFILTRATION UNLESS PROHIBITED DUETO ONE OF THE REASONS IN PART III.D.1.J. IF INFILTRATION IS PROHIBITED IDENTIFY OTHER METHOD OF OTHER VOLUME REDUCTION (E.G., FILTRATION SYSTEM, WET SEDIMENTATION BASIN, REGIONAL PONDING OR EQUIVALENTMETHOD2. DESCRIBE WHICH METHOD WILL BE USED TO TREAT RUNOFF FROM THE NEW IMPERVIOUS SURFACES CREATED BY THE PROJECT (III.D):·WET SEDIMENTATION BASIN·INFILTRATION/FILTRATION·REGIONAL PONDS·COMBINATION OF PRACTICESINCLUDE ALL CALCULATIONS AND DESIGN INFORMATION FOR THE METHOD SELECTED. SEE PART III.D OF THE PERMIT FOR SPECIFIC REQUIREMENTS ASSOCIATED WITH EACH METHOD.INFILTRATION / FILTRATION / REGIONAL PONDINGCALCULATIONS ARE WITHIN THE SITE STORM WATER MANAGEMENT REPORT AND PART OF THIS SWPPP AS ATTACHMENT D.3. IF IT IS NOT FEASIBLE TO MEET THE TREATMENT REQUIREMENT FOR THE WATER QUALITY VOLUME, DESCRIBE WHY. THIS CAN INCLUDE PROXIMITY TO BEDROCK OR ROAD PROJECTS WHERE THE LACK OF RIGHT OF WAYPRECLUDES THE INSTALLATION OF ANY PERMANENT STORMWATER MANAGEMENT PRACTICES. DESCRIBE WHAT OTHER TREATMENT, SUCH AS GRASSES SWALES, SMALLER PONDS, OR GRIT CHAMBERS, WILL BE IMPLEMENTEDTO TREAT RUNOFF PRIOR TO DISCHARGE TO SURFACE WATERS. (III.C)IT IS FEASIBLE TO MEET REQUIREMENT FOR WATER QUALITY VOLUME.4. FOR PROJECTS THAT DISCHARGE TO TROUT STREAMS, INCLUDING TRIBUTARIES TO TROUT STREAMS, IDENTIFY METHOD OF INCORPORATING TEMPERATURE CONTROLS INTO THE PERMANENT STORMWATER MANAGEMENTSYSTEM.N/AEROSION PREVENTION PRACTICES (IV.B)DESCRIBE THE TYPES OF TEMPORARY EROSION PREVENTION BMP'S EXPECTED TO BE IMPLEMENTED ON THIS SITE DURING CONSTRUCITON:1. DESCRIBE CONSTRUCTION PHASING, VEGETATIVE BUFFER STRIPS, HORIZONTAL SLOPE GRADING, AND OTHER CONSTRUCTION PRACTICES TO MINIMIZE EROSION. DELINEATE AREAS NOT TO BE DISTURBED (E.G., WITH FLAGS,STAKES, SIGNS, SILT FENCE, ETC.) BEFORE WORK BEGINS.SILT FENCE WILL BE INSTALLED AT ATHE DOWNHILL LOCATIONS OF THE SITE.2. DESCRIBE METHODS OF TEMPORARILY STABILIZING SOILS AND SOIL STOCKPILES (E.G., MULCHES, HYDRAULIC TACKIFIERS, EROSION BLANKETS, ETC.):TEMPORARY EROSION PROTECTION WILL BE SEED AND MULCH AND EROSION BLANKETS WHERE REQUIRED, WITH PERMANENT COVER BEING EITHER SOD OR LANDSCAPE FEATURES.3. DESCRIBE METHODS OF DISSIPATING VELOCITY ALONG STORMWATER CONVEYANCE CHANNELS AND AT CHANNEL OUTLETS (E.G., CHECK DAMS, SEDIMENT TRAPS, RIP RAP, ETC.):SOD WILL BE UTILIZED ALONG CHANNELS AND RIP RAP AT CHANNEL.4. DESCRIBE METHODS TO BE USED FOR STABILIZATION OF DITCH AND SWALE WETTED PERIMETERS (NOTE THAT MULCH, HYDRAULIC SOIL TACKIFIERS, HYDROMULCHES, ETC. ARE NOT ACCEPTABLE SOIL STABILIZATION METHODSFOR ANY PART OF A DRAINAGE DITCH OR SWALE)FINAL STABILIZATION OF SWALES WILL BE SOD5. DESCRIBE METHODS TO BE USED FOR ENERGY DISSIPATION AT PIPE OUTLETS (E.G., RIP RAP, SPLASH PADS, GABIONS, ETC.)RIP RAP WILL BE UTILIZED AT PIPE OUTLETS6. DESCRIBE METHODS TO BE USED TO PROMOTE INFILTRATION AND SEDIMENT REMOVAL ON THE SITE PRIOR TO OFFSITE DISCHARGE, UNLESS INFEASIBLE (E.G., DIRECT STORMWATER FLOW TO VEGETATED AREAS):DISCONNECTED IMPERVIOUS AREA AND INFILTRATION AREAS WILL BE UTILIZED7. FOR DRAINAGE OR DIVERSION DITCHES, DESCRIBE PRACTICES TO STABILIZE THE NORMAL WETTED PERIMETER WITHIN 200 LINEAL FEET OF THE PROPERTY EDGE OR POINT OF DISCHARGE TO SURFACE WATER. THE LAST 200LINEAL FEET MUST BE STABILIZED WITHIN 24 HOURS AFTER CONNECTING TO SURFACE WATERS AND CONSTRUCTION IN THAT PORTION OF THE DITCH HAS TEMPORARILY OR PERMANENTLY CEASED FOR ALL DISCHARGES TOSPECIAL, IMPAIRED OR “WORK IN WATER RESTRICTIONS”. ALL OTHER REMAINING PORTIONS OF THE TEMPORARY OR PERMANENT DITCHES OR SWALES WITHIN 14 CALENDAR DAYS AFTER CONNECTING TO A SURFACE WATER,PROPERTY EDGE AND CONSTRUCTION IN THAT AREA HAS TEMPORARILY OR PERMANENTLY CEASED.N/A, NO DITCHES ON SITE8. DESCRIBE ADDITIONAL EROSION PREVENTION MEASURES THAT WILL BE IMPLEMENTED AT THE SITE DURING CONSTRUCTION (E.G., CONSTRUCTION PHASING, MINIMIZING SOIL DISTURBANCE, VEGETATIVE BUFFERS, HORIZONTALSLOPE GRADING, SLOPE DRAINING/TERRACING, ETC.):OTHER EROSION CONTROL PRACTICES INCLUDE BUT ARE NOT LIMITED TO; MINIMIZING SITE EXPOSURE WHEN POSSIBLE.9. IF APPLICABLE, INCLUDE ADDITIONAL REQUIREMENTS IN APPENDIX A PART C.3 REGARDING MAINTAINING A 100-FOOT BUFFER ZONE OR INSTALLING REDUNDANT BMPS FOR PORTIONS OF THE SITE THAT DRAIN TO SPECIALWATERS).N/A10. IF APPLICABLE, DESCRIBE ADDITIONAL EROSION PREVENTION BMPS TO BE IMPLEMENTED AT THE SITE TO PROTECT PLANNED INFILTRATION AREASMINIMIZE SITE EXPOSURE IN AREAS ADJACENT TO INFILTRATION AREAS.SEDIMENT CONTROL PRACTICIES (IV.C)DESCRIBE THE METHODS OF SEDIMENT CONTROL BMPS TO BE IMPLEMENTED AT THIS SITE DURING CONSTRUCTION TO MINIMIZE SEDIMENT IMPACTS TO SURFACE WATERS, INCLUDING CURB AND GUTTER SYSTEMS1. DESCRIBE METHODS TO BE USED FOR DOWN GRADIENT PERIMETER CONTROL:SILT FENCE WILL BE INSTALLED AROUND THE ENTIRE PERIMETER OF THE SITE2. DESCRIBE METHODS TO BE USED TO CONTAIN SOIL STOCKPILES:SEED AND MULCH AS WELL AS EROSION CONTROL BLANKETS WILL BE UTILIZED AS NECESSARY3. DESCRIBE METHODS TO BE USED FOR STORM DRAIN INLET PROTECTION:SEE INLET PROTECTION DETAILS4. DESCRIBE METHODS TO MINIMIZE VEHICLE TRACKING AT CONSTRUCTION EXITS AND STREET SWEEPING ACTIVITIES:THE PROJECT WILL UTILIZE A ROCK CONSTRUCTION ENTRANCE.5. DESCRIBE METHODS, IF APPLICABLE, ADDITIONAL SEDIMENT CONTROLS (E.G., DIVERSION BERMS) TO BE INSTALLED TO KEEP RUNOFF AWAY FROM PLANNED INFILTRATION AREAS WHEN EXCAVATED PRIOR TO FINALSTABILIZATION OF THE CONTRIBUTING DRAINAGE AREA:SILT FENCE TO BE INSTALLED IMMEDIATELY AFTER GRADING TO PROTECT INFILTRATION AREAS.6. DESCRIBE METHODS TO BE USED TO MINIMIZE SOIL COMPACTION AND PRESERVE TOP SOIL (UNLESS INFEASIBLE) AT THIS SITE:LIGHT TRACKED EQUIPMENT WILL BE USED, TOPSOIL WILL BE STRIPPED AND STOCKPILED7. DESCRIBE PLANS TO PRESERVE A 50-FOOT NATURAL BUFFER BETWEEN THE PROJECT'S SOIL DISTURBANCE AND A SURFACE WATER OR PLANS FOR REDUNDANT SEDIMENT CONTROLS IF A BUFFER IS INFEASIBLE:DOUBLE ROW OF SILT FENCE WILL BE INSTALLED ALONG WETLAND. PROJECT WILL NOT DISTURB WITHIN 200 FEET OF WETLAND.8. DESCRIBE PLANS FOR USE OF SEDIMENTATION TREATMENT CHEMICALS (E.G., POLYMERS, FLOCCULANTS, ETC.) SEE PART IV.C.10 OF THE PERMIT:N/A9. IS THE PROJECT REQUIRED TO INSTALL A TEMPORARY SEDIMENT BASIN DUE TO 10 OR MORE ACRES DRAINING TO A COMMON LOCATION OR 5 ACRES OR MORE IF THE SITE IS WITHIN 1 MILE OF A SPECIAL OR IMPAIRED WATER?NOIF YES, DESCRIBE (OR ATTACH PLANS ) SHOWING HOW THE BASIN WILL BE DESIGNED AND CONSTRUCTED IN ACCORDANCE WITH PART III.C OF THE PERMIT.N/ADEWATERING AND BASIN DRAINING (IV.D)1. WILL THE PROJECT INCLUDE DEWATERING OR BASIN DRAINING? NOIF YES, DESCRIBE MEASURES TO BE USED TO TREAT/DISPOSE OF TURBID OR SEDIMENT-LADEN WATER AND METHOD TO PREVENT EROSION OR SCOUR OF DISCHARGE POINTS (SEE PART IV. D OF THE PERMIT):N/A 2. WILL THE PROJECT INCLUDE USE OF FILTERS FOR BACKWASH WATER? NOIF YES, DESCRIBE HOW FILTER BACKWASH WATER WILL BE MANAGED ON THE SITE OR PROPERLY DISPOSED (SEE PART III.D.3. OF THE PERMIT):N/AADDITIONAL BMP'S FOR SPECIAL WATERS AND DISCHARGES TO WETLANDS (APPENDIX A, PARTS C AND D)1. SPECIAL WATERS. DOES YOUR PROJECT DISCHARGE TO SPECIAL WATERS? NO2. IF PROXIMITY TO BEDROCK OR ROAD PROJECTS WHERE THE LACK OF RIGHT OF WAY PRECLUDES THE INSTALLATION OF ANY OF THE PERMANENT STORMWATER MANAGEMENT PRACTICES, THEN OTHER TREATMENT SUCH ASGRASSED SWALES, SMALLER PONDS, OR GRIT CHAMBERS IS REQUIRED PRIOR TO DISCHARGE TO SURFACE WATERS. DESCRIBE WHAT OTHER TREATMENT WILL BE PROVIDED.N/A3. DESCRIBE EROSION AND SEDIMENT CONTROLS FOR EXPOSED SOIL AREAS WITH A CONTINUOUS POSITIVE SLOPE TO A SPECIAL WATERS, AND TEMPORARY SEDIMENT BASINS FOR AREAS THAT DRAIN FIVE OR MORE ACRESDISTURBED AT ONE TIME.N/A4. DESCRIBE THE UNDISTURBED BUFFER ZONE TO BE USED (NOT LESS THAN 100 LINEAR FEET FROM THE SPECIAL WATER).N/A5. DESCRIBE HOW THE PERMANENT STORMWATER MANAGEMENT SYSTEM WILL ENSURE THAT THE PRE AND POST PROJECT RUNOFF RATE AND VOLUME FROM THE 1, AND 2-YEAR 24-HOUR PRECIPITATION EVENTS REMAINS THESAME.N/A6. DESCRIBE HOW THE PERMANENT STORMWATER MANAGEMENT SYSTEM WILL MINIMIZE ANY INCREASE IN THE TEMPERATURE OF TROUT STREAM RECEIVING WATERS RESULTING IN THE 1, AND 2-YEAR 24-HOUR PRECIPITATIONEVENTS.N/A7. WETLANDS. DOES YOUR PROJECT DISCHARGE STORMWATER WITH THE POTENTIAL FOR SIGNIFICANT ADVERSE IMPACTS TO A WETLAND (E.G., CONVERSION OF A NATURAL WETLAND TO A STORMWATER POND)? YES OR NOIF YES, DESCRIBE THE WETLAND MITIGATION SEQUENCE THAT WILL BE FOLLOWED IN ACCORDANCE WITH PART D OF APPENDIX A.N/AINSPECTIONS AND MAINTENANCE (IV.E)DESCRIBE PROCEDURES TO ROUTINELY INSPECT THE CONSTRUCTION SITE:·ONCE EVERY SEVEN (7) DAYS DURING ACTIVE CONSTRUCTION AND·WITHIN 24 HOURS AFTER A RAINFALL EVENT GREATER THAN 0.5 INCHES IN 24 HOURS, AND WITHIN (7) DAYS AFTER THATINSPECTIONS MUST INCLUDE STABILIZED AREAS, EROSION PREVENTION,AND SEDIMENT CONTROL BMP'S AND INFILTRATION AREAS.INSPECTOR WILL FOLLOW REQUIREMENTS SPECIFIED ABOVE AND FILL OUT "ATTACHMENT B - CONSTRUCTION STORMWATER INSPECTION CHECKLIST"1. Describe practices for storage of building products with a potential to leach pollutants to minimize exposure to stormwater:ALL BUILDING PRODUCTS WILL BE SEALED AND STORED IN A MANNER TO MINIMIZE EXPOSURE2. Describe practices for storage of pesticides, herbicides, insecticides, fertilizers, treatment chemical, and landscape materials:ALL LANDSCAPE TREATMENT CHEMICALS WILL BE SEALED AND STORED IN A MANNER TO MINIMIZED EXPOSURE3. Describe practices for storage and disposal of hazardous materials or toxic waste (e.g., oil, fuel, hydraulic fluids, paint solvents, petroleum-based products, wood preservative, additives, curing compounds, and acids) according to Minn. R. ch. 7045, includingrestricted access and secondary containment:ALL HAZARDOUS WASTE WILL BE APPROPRIATELY DISPOSED OF OFF SITE ACCORDING TO LOCAL AND STATE LAWS.4. Describe collection, storage and disposal of solid waste in compliance with Minn. R. ch. 7035:ALL CONSTRUCTION DEBRIS AND SOLID WASTER WILL BE APPROPRIATELY DISPOSED OF OFF SITE ACCORDING TO LOCAL AND STATE LAWS5. Describe management of portable toilets to prevent tipping and disposal of sanitary wastes in accordance with Minn. R. ch. 7040:SANITARY AND SEPTIC SERVICES WILL BE PROVIDED TO WORKERS WITH PORTABLE FACILITIES MAINTAINED AS NEEDED BY THE PROVIDER.6. Describe spill prevention and response for fueling and equipment or vehicle maintenance:EMPLOYEES WILL BE TRAINED IN TECHNIQUES DESIGNED TO MINIMIZE SPILLS. VEHICLES AND EQUIPMENT SHALL BE CHECKED FOR LEAKS.7. Describe containment and disposal of vehicle and equipment wash water and prohibiting engine degreasing on the site:ALL CONSTRUCTION VEHICLES SHALL BE WASHED OFF SITE8. Describe storage and disposal of concrete and other washout wastes so that wastes do not contact the ground:ALL CONCRETE WASHOUT SHALL OCCUR OFF SITE.FINAL STABILIZATION (IV.G)1. DESCRIBE METHOD OF FINAL STABILIZATION (PERMANENT COVER) OF ALL DISTURBED AREAS:FINAL STABILIZATION WILL BE ACCOMPLISHED WITH PAVEMENT, SOD AND LANDSCAPE MATERIALS.2. DESCRIBE PROCEDURES FOR COMPLETING FINAL STABILIZATION AND TERMINATING PERMIT COVERAGE (SEE PART IV.G.1-5):UPON STABILIZATION DESCRIBED ABOVE, THE CONTRCTOR AND OWNER SHALL MUTUALLY TRANSFER THE NPDES PERMIT TO THE NEXT OWNER WITH DOCUMENTS DESCRIBING THE NATURE OF TERMINATION PROCEDURE.DOCUMENTATION OF INFEASIBILITY: (IF APPLICABLE)PROJECT NAME: COLUMBIA HEIGHTS SENIOR LIVINGPROJECT LOCATION (BRIEFLY DESCRIBE WHERE CONSTRUCTION ACTIVITY OCCURS. INCLUDE ADDRESS IF AVAILABLE.)ADDRESS: SW CORNER OF HUSET PKWY & JEFFERSON ST NECITY OR TOWNSHIP: COLUMBIA HEIGHTSSTATE: MNZIP CODE: 55421LATITUDE/LOGITUDE OF APPROXIMATE CENTROID OF PROJECT: 45.037890 N, -93.255753 EMETHOD OF LAT/LONG COLLECTION (CIRCLE ONE): GPS ONLINE TOOL USGS TOPOGRAPHICALL CITIES WHERE CONSTRUCTION WILL OCCUR: COLUMBIA HEIGHTSALL COUNTIES WHERE CONSTRUCTION WILL OCCUR: ANOKA COUNTYALL TOWNSHIPS WHERE CONSTRUCTION WILL OCCUR: NAPROJECT SIZE (NUMBER OF ACRES TO BE DISTURBED): 1.4PROJECT TYPE (CIRCLE ONE): RESIDENTIAL COMMERCIAL/INDUSTRIAL ROAD CONSTRUCTION RESIDENTIAL & RD CONSTRUCTION OTHER (DESCRIBE): XXXXXCUMULATIVE IMPERVIOUS SURFACE (TO THE NEAREST TENTH ACRE)EXISTING AREA OF IMPERVIOUS SURFACE : 0.1POST CONSTRUCTION AREA OF IMPERVIOUS SURFACE: 1.2TOTAL NEW AREA OF IMPERVIOUS SURFACE: 1.2RECEIVING WATERSWATER BODY ID NAME OF WATER BODY WATER BODY TYPE SPECIAL WATER? (Y/N) IMPARIED WATER (Y/N)07010206-805...MISSISSIPPI RIVER...RIVER...NO...YES...DATES OF CONSTRUCTIONCONSTRUCTION START DATE: 06/20ESTIMATED COMPLETION DATE: 10/22GENERAL CONSTRUCTION PROJECT INFORMATIONDESCRIBE THE CONSTRUCTION ACTIVITY (WHAT WILL BE BUILT, GENERAL TIMELINE, ETC): AN EMPTY GREEN AREA WILL BE DEVELOPED INTO A SENIOR HOUSING FACILITY WITH RELATED PARKING, STORMWATER MANAGMENT ANDMISCELLANEOUS SITE FEATURES, INCLUDING PARKING, WALKWAYS, LANDSCAPING, ETC.DESCRIBE SOIL TYPES FOUND AT THE PROJECT: OUTWASH PLAINS, MORAINES, STREAM TERRACES, VARIABLE LOAMY SOIL MATERIAL.SITE LOCATION MAP - ATTACH MAPS (U.S. GEOLOGIC SURVEY 7.5 MINUTE QUADRANGLE, NATIONAL WETLAND INVENTORY MAPS OR EQUIVALENT) SHOWING THE LOCATION AND TYPE OF ALL RECEIVING WATERS, INCLUDINGWETLANDS, DRAINAGE DITCHES, STORMWATER PONDS, OR BASINS, ETC. THAT WILL RECEIVE RUNOFF FROM THE PROJECT. USE ARROWS SHOWING THE DIRECTION OF FLOW AND DISTANCE TO THE WATER BODY.SOILS INFORMATIONMAP UNITSYMBOLUWURBAN LAND UDORTHENT, WET SUBSTRATUMCOMPLEX, 0 TO 2 PERCENT SLOPESMAP UNIT NAME......UW1.25 MILES Civil Engineering Surveying Landscape Architecture4931 W. 35th Street, Suite 200St. Louis Park, MN 55416civilsitegroup.com 612-615-0060COPYRIGHT CIVIL SITE GROUP INC.cCOLUMBIA HEIGHTS SENIOR LIVING HUSET PKWY & JEFFERSON ST NE, COLUMBIA HEIGHTS, MN 55421 1428 5TH AVE, ANOKA, MN 55303 TOLLBERG HOMES PROJECT 44263Matthew R. PavekLICENSE NO.DATEI HEREBY CERTIFY THAT THIS PLAN,SPECIFICATION, OR REPORT WASPREPARED BY ME OR UNDER MY DIRECTSUPERVISION AND THAT I AM A DULYLICENSED PROFESSIONAL ENGINEERUNDER THE LAWS OF THE STATE OFMINNESOTA.08/29/19P R E L I M I N A R Y : N O T F O R C O N S T R U C T I O NISSUE/SUBMITTAL SUMMARYDATEDESCRIPTION. .. .. .. .. .. .PROJECT NUMBER:1924308/29/2019 CITY RESUBMITTAL. .. .. .. .. .08/05/2019 CITY SUBMITTALDRAWN BY:REVIEWED BY:BNMP. .. .. .. .. .. .. .20188/29/2019 3:32 PMREVISION SUMMARYDATEDESCRIPTIONSW1.5SWPPP - ATTACHMENTS. .. .. .. .. .. .ATTACHMENT B: SWPPP INSPECTION FORMATTACHMENT C: MAINTENANCE PLAN FOR PERMANENT STORM WATER TREATMENT SYSTEMNOTE: THIS INSPECTION REPORT DOES NOT ADDRESS ALL ASPECTS OF THE NATIONAL APOLLUTANT DISCHARGE ELIMINATION SYSTEM/STATE DISPOSAL SYSTEM (NPDES/SDS) CONSTRUCTION STORMWATER PERMIT ISSUED ON AUGUST 1,2013. THE COMPLETION OF THIS CHECKLIST DOES NOT GUARANTEE THAT ALL PERMIT REQUIREMENTS ARE IN COMPLIANCE; IT IS THE RESPONSIBILITY OF THE PERMITTEE(S) TO READ AND UNDERSTAND THE PERMIT REQUIREMENTS.FACILITY INFORMATIONSITE NAME: FACILITY ADDRESS: PERMIT NUMBER:CITY: STATE: ZIP CODE:INSPECTION INFORMATIONINSPECTOR NAME: _______________________ PHONE NUMBER: _________________________DATE (MM/DD/YYYY): _____________________ TIME: ____________ AM / PMIS THE INSPECTOR CERTIFIED IN SEDIMENT AND EROSION CONTROL AND IS IT DOCUMENTED IN THE STORMWATER POLLUTION PREVENTION PLAN (SWPPP)?IS THIS INSPECTION ROUTINE OR IN RESPONSE TO A STORM EVENT:RAINFALL AMOUNT (IF APPLICABLE): ____________IS THE SITE WITHIN ONE AERIAL MILE OF A SPECIAL OR IMPARED WATER?IF YES, FOLLOW APPENDIX A AND OTHER APPLICABLE PERMIT REQUIREMENTSNOTE: IF N/A IS SELECTED AT ANY TIME, SPECIFY WHY IN THE COMMENT AREA FOR THAT SECTION.EROSION CONTROL REQUIREMENT (PART IV.B)1. SOIL STABILIZATION WHERE NO CONSTRUCTION ACTIVITY FOR 14 DAYS? (7 DAYS WHERE APPLICABLE)2. HAS THE NEED TO DISTURB STEEP SLOPES BEEN MINIMIZED?3. ALL DITCHES STABILIZED 200; BACK FROM POINT OF DISCHARGE WITHIN 24 HOURS? (NOT MULCH)4. ARE THERE BMP'S FOR ONSITE STOCKPILES?5. ARE APPROPRIATE BMP'S INSTALLED PROTECTING INLETS/OUTLETS?6. DO PIPE OUTLETS HAVE ENERGY DISSIPATION?COMMENTS:SEDIMENT CONTROL REQUIREMENT (PART IV.C)1. PERIMETER CONTROL INSTALLED ON ALL DOWN GRADIENT PERIMETERS?2. PERIMETER CONTROL TRENCHED IN WHERE APPROPRIATE?3. 50 FOOT NATURAL BUFFER MAINTAINED AROUND ALL SURFACE WATERS?3.1. IF NO, HAVE REDUNDANT SEDIMENT CONTROLS BEEN INSTALLED?4. INLET PROTECTION ON ALL CATCH BASINS AND CULVERT INLETS?5. VEHICLE TRACKING BEST MANAGEMENT PRACTICES (BMP'S) AT ALL SITE EXITS?6. ALL TRACKED SEDIMENT REMOVED WITHIN 24 HOURS?7. ARE ALL INFILTRATION SYSTEMS STAKED AND MARKED TO AVOID COMPACTION?8. ARE ALL INFILTRATION AREAS PROTECTED WITH A PRETREATMENT DEVICE?9. DO ALL STOCKPILES HAVE PERIMETER CONTROLS?COMMENTS:MAINTENANCE-EROSION AND SEDIMENT CONTROL BMP'S (PART IV.E.)1. ARE ALL PREVIOUSLY STABILIZED AREAS MAINTAINING 90% GROUND COVER?2. ANY DITCH EROSION OBSERVED?3. PERIMETER CONTROL--HAS SEDIMENT REACHED ONE HALF THE HEIGHT OF THE DEVICE?4. ARE INLET PROTECTION DEVICES MAINTAINED AND FUNCTIONING PROPERLY?COMMENTS:OTHER1. ARE ALL MATERIALS THAT CAN LEACH POLLUTANTS UNDER COVER?2. HAS ACCESS BEEN RESTRICTED TO ONSITE HAZARDOUS MATERIALS?3. DOES ON-SITE FUELING ONLY OCCUR IN A CONTAINED AREA?4. ARE ALL SOLID WASTES BEING PROPERLY DISPOSED OF?5. IS THE CONCRETE WASHOUT AREA COMPLETELY CONTAINED?6. IS THE CONCRETE WASHOUT AREA MARKED WITH SIGN?COMMENTS:7. WERE ANY DISCHARGES SEEN DURING THIS INSPECTION, SEDIMENT, WATER, OR OTHERWISE?7.1. IF YES, STATE THE EXACT LOCATION OF ALL POINTS OF DISCHARGE. PHOTOGRAPH THE DISCHARGE AND DESCRIBE THE DISCHARGE (COLOR, ODOR, FOAM, OIL SHEEN, ETC). HOW WILL IT BE REMOVED? HOW DID THE DISCHARGEHAPPEN? HOW MUCH WAS DISCHARGED? HOW WILL IT BE STOPPED, AND HOW LONG WILL IT TAKE TO STOP? IS THE DISCHARGE GOING INTO AN ADJACENT SITE? WAS THE DISCHARGE A SEDIMENT DELTA? IF YES, WILL THE DELTA BERECOVERED WITHIN 7 DAYS?8. WILL A PERMANENT STORMWATER MANAGEMENT SYSTEM BE UTILIZED IN THIS PROJECT AS REQUIRED AND IN ACCORDANCE WITH PART III.D OF THE PERMIT? DESCRIBE:9. IS ANY DEWATERING OCCURRING ON SITE?9.1. IF YES, WHERE? WHAT BMP IS BEING USED? HOW MUCH WATER IS BEING DEWATERED? IS THE WATER CLEAR? WHERE IS THE WATER BEING DISCHARGED TO?10. IS A COPY OF THE SWPPP LOCATED ON THE CONSTRUCTION SITE?11. HAS THE SWPPP BEEN FOLLOWED AND IMPLEMENTED ON SITE?12. IS A SEDIMENTATION BASIN REQUIRED FOR THIS PROJECT AS SPECIFIED IN THE PERMIT?12.1. IF YES, ARE THEY MAINTAINED AS SPECIFIED IN THE PERMIT?13. IS THE TOPSOIL ON THIS PROJECT BEING PRESERVED?13.1. IF YES, EXPLAIN HOW THE TOP SOIL IS BEING PRESERVED. IF NO, EXPLAIN WHY IT WAS INFEASIBLE.14. ARE ALL INFILTRATION SYSTEMS MARKED TO AVOID COMPACTION?14.1. DO ALL INFILTRATION AREAS HAVE PRETREATMENT DEVICES?15. DESCRIPTION OF AREAS OF NON-COMPLIANCE NOTED DURING THE INSPECTION, REQUIRED CORRECTIVE ACTIONS, AND RECOMMENDED DATE OF COMPLETION OF CORRECTIVE ACTIONS:16. PROPOSED AMENDMENTS TO THE SWPPP:17. POTENTIAL AREAS OF FUTURE CONCERN:18. ADDITIONAL COMMENTSDISCLOSURES:·AFTER DISCOVERY, THE PERMIT REQUIRES MANY OF THE DEFICIENCIES THAT MAY BE FOUND IN THIS CHECKLIST BE CORRECTED WITHIN A SPECIFIED PERIOD OF TIME. SEE PERMIT FOR MORE DETAILS.·THIS INSPECTION CHECKLIST IS AN OPTION FOR SMALL CONSTRUCTION SITES. LARGE CONSTRUCTION SITES AND LINEAR PROJECTS REQUIRE MORE EXTENSIVE/MORE LOCATION SPECIFIC INSPECTION REQUIREMENTS.·THE PERMITTEE(S) IS/ARE RESPONSIBLE FOR THE INSPECTION AND MAINTENANCE OF TEMPORARY AND PERMANENT WATER QUALITY MANAGEMENT BMP'S AS WELL AS EROSION PREVENTION AND SEDIMENT CONTROL BMP'S UNTILANOTHER PERMITTEE HAS OBTAINED COVERAGE UNDER THIS PERMIT ACCORDING TO PART II.B.5., OR THE PROJECT HAS UNDERGONE FINAL STABILIZATION AND A NOTICE OF TERMINATION HAS BEEN SUBMITTED TO THE MPCA.Y N N/AY N N/AY N N/AY N N/AY N N/AY N N/AY N N/AY N N/AATTACHMENT C - CHAMBERFACILITY MANAGEMENT SCHEDULE1. ALL GRIT CHAMBERS, SUMP CATCH BASINS, SUMP MANHOLES, OUTLET STRUCTURES, CULVERTS, OUTFALL STRUCTURES AND OTHERSTORM WATER FACILITIES FOR WHICH MAINTENANCE REQUIREMENTS ARE NOT OTHERWISE SPECIFIED HEREIN MUST BE INSPECTED IN THESPRING, SUMMER AND FALL OF EACH YEAR. WITHIN 30 DAYS OF THE INSPECTION DATE, ALL ACCUMULATED SEDIMENT AND DEBRIS MUST BEREMOVED SUCH THAT EACH STORM WATER FACILITY OPERATES AS DESIGNED AND PERMITTED. CONTRIBUTING DRAINAGE AREAS MUST BEKEPT CLEAR OF LITTER AND VEGETATIVE DEBRIS, INFLOW PIPES AND OVERFLOW SPILLWAYS KEPT CLEAR, INLET AREAS KEPT CLEAN, ANDUNDESIRABLE VEGETATION REMOVED. EROSION IMPAIRING THE FUNCTION OR INTEGRITY OF THE FACILITIES, IF ANY, WILL BE CORRECTED,AND ANY STRUCTURAL DAMAGE IMPAIRING OR THREATENING TO IMPAIR THE FUNCTION OF THE FACILITIES MUST BE REPAIRED.2. VOLUME CONTROL FACILITIES AND CONTRIBUTING DRAINAGE AREAS MUST BE INSPECTED EVERY THREE MONTHS DURING THEOPERATIONAL PERIOD (BETWEEN SPRING SNOWMELT AND FIRST SUBSTANTIAL SNOWFALL) AND MONITORED AFTER RAINFALL EVENTS OF 1INCH OR MORE TO ENSURE THAT THE CONTRIBUTING DRAINAGE AREA IS CLEAR OF LITTER AND DEBRIS, INFLOW PIPES AND OVERFLOWSPILLWAYS ARE CLEAR, INLET AREAS ARE CLEAN, UNDESIRABLE VEGETATION IS REMOVED AND THERE IS NO EROSION IMPAIRING ORTHREATENING TO IMPAIR THE FUNCTION OF A FACILITY. IF SEDIMENT HAS ACCUMULATED IN A INFILTRATION FEATURE, WITHIN 30 DAYS OFINSPECTION DEPOSITED SEDIMENTS MUST BE REMOVED, THE INFILTRATION CAPACITY OF THE UNDERLYING SOILS MUST BE RESTORED,AND ANY SURFACE DISTURBANCE MUST BE STABILIZED. INSPECTION MUST ENSURE THAT SEDIMENT TRAPS AND FOREBAYS ARE TRAPPINGSEDIMENT AND THAT MORE THAN 50 PERCENT OF THE STORAGE VOLUME REMAINS, THE CONTRIBUTING DRAINAGE AREA IS STABLE (I.E., NOEROSION IS OBSERVED), AND INLETS AND OUTLET/OVERFLOW SPILLWAYS ARE IN GOOD CONDITIONS WITH NO EROSION. MAINTENANCETECHNIQUES USED MUST PROTECT THE INFILTRATION CAPACITY OF THE PRACTICE BY LIMITING SOIL COMPACTION TO THE GREATESTEXTENT POSSIBLE (E.G., BY USING LOW-IMPACT EARTH-MOVING EQUIPMENT).3.UNDERGROUND STORAGE CHAMBERS MUST BE INSPECTED AT LEAST ONCE A YEAR TO ENSURE THAT ADEQUATE STORAGE CAPACITY REMAINS.CAPACITY WILL BE CONSIDERED INADEQUATE IF SEDIMENT HAS DECREASED THE STORAGE VOLUME BY 50 PERCENT OF ITS ORIGINAL DESIGNVOLUME. ACCUMULATED DEBRIS AND SEDIMENT WILL BE REMOVED, AND INLET AND OUTLET STRUCTURES WILL BE CLEARED OF ANY FLOWIMPEDIMENTS.