Loading...
HomeMy WebLinkAbout09/03/2013 Work Session CITY OF COLUMBIA HEIGHTS Mayor Gary L.Netenon Co imcilmem hers XOberIA. Williams 590 401"Avenue NE,Columbia Heights,MN 55421-3878 (763)706-3600 TDD(763)706-3692 Brucc Nawracki ehm Visit our website at.www.dcolumbia-keielus.mu.us At nmera 1)Lb i# nnn SchmiB CSty Manager 6lalterk Fehst ADMINISTRATION Meeting of: COLUMBIA HEIGHTS CITY COUNCIL Date of Meeting: SEPTEMBER 3,2013 Time of Meeting: 7:00 PM Location of Meeting: CONFERENCE ROOM 1 Purpose of Meeting: WORK SESSION AGENDA I. MCES Ongoing I/I Program: Mitigation Plan for Collection District 3 —Kevin Hansen 2. Seek bids for Sanitary Sewer Repairs—Kevin Hansen 3. Budget Presentation—Joseph Kloiber The City of Columbia Heights does not discriminate on the basis of disability in the admission or access to,or treatment or employment in,its services,programs,or activities. Upon request,accommodation will be provided to allow individuals with disabilities to participate in all City of Columbia Heights'services,programs,and activities. Auxiliary aids for handicapped persons are available upon request when the request is made at least 96 hours in advance. Please call the City Council Secretary at 763-706-3611,to make arrangements. (TDD/763-706-3692 for deaf or hearing impaired only.) CITY COUNCIL LETTER Meeting of September 3'a, 2013 AGENDA SECTION: WORK SESSION ORIGINATING CITY MANAGER NO: DEPARTMENT: PUBLIC WORKS ITEM: MCES Ongoing I/I Program: Mitigation BY: K. Hansen BY: Plan for Collection District 3 DATE: 8/28/13 DATE: Background: The City of Columbia Heights had previously been subject to a surcharge on our sanitary sewer bill by Metropolitan Council Environmental Services (MCES) in the amount of $81,900, annually. The 5 year program was established for non-sewage flow from inflow or infiltration (I/I) sources in sewer Collection District 2, and ended in 2012. The City never paid the surcharge to MCES as we invested in I/I reduction measures annually. An example of this is the sump pump disconnect program, sewer lining, manhole replacements, and specific site investigations. Communities invested substantially in I/I reductions efforts during the 5 year program. But 1/I continues to impact the MCES system. Recognizing this, MCES has modified the I/I Program to an Ongoing 1/1 Program. The details of the Metropolitan Council's approved program can be found at: http://www.metrocouncil.org/Wastewater-Water/Funding-Finance/Rates-Charges/MCES-Inflow-Infiltration- (I-I.)-Program.aspx Under the Ongoing I/I Program, MCES has calculated new thresholds for peak exceedances at each of the City's three metersheds—letter attached. Analysis/Conclusions: The City has received two notifications from MCES in 2013 for peak exceedences—but for Collection District 3. Historically, Collection District 3 has not had a history of high flows. Furthermore, under the new program the surcharge calculation may be updated based on storm events. The new surcharge for Collection District 3 is $126,170 - significantly higher than our previous program. As required in the July 30th MCES letter—staff prepared a Mitigation Plan which outlined our response for Collection District 3 —also attached. Recommended Motion: None requested—information and discussion only at this time. Attachments (3) COUNCIL ACTION: July 16, 2013 Kevin Hansen City Manager City of Columbia Heights 590-40th Ave.NE r..:, Columbia Heights, MN 55421-3835 >1�" RE: Excessive Wastewater Peak Discharges Period:June 2013 PUBLIC Dear Mr. Hansen: In 2009 the Metropolitan Council formed a Demand Charge Task Force to address the long term impacts of excessive UI on the regional disposal system.Consistent with the recommendations of the Demand Charge Task Force,the Council began implementing an On-going UI mitigation program in 2013.The start date for peak flow exceedance measurement for 2014 community work activities began on July 1,2012 and will continue through June 30,2013. Any exceedances measured during this period will require the City to prepare a mitigation plan and begin its implementation in 2014. Attached is a copy of a flow chart(s)for the subject event(s). Your community, either in part or in entirety,exceeded the Ul limit,during these events. The Council has determined that your community's exceedance(s)were as follows: 0.34 Million Gallons per Day(MGD)and occurred at 5:00 PM on 6/15/2013 at M106 1.24 Million Gallons per Day(MGD)and occurred at 9:00 PM on 6/21/2013 at M106 For additional information regarding the Council's On-going I/I program,go to our web site at: hap.11www,metrocouncil.org/Wastewater-Water/Funding-1l inancelRates-Charges/MCES-Inf low-and-lnlltration-(1-1)- Program,aspx Within a few weeks the Council will send your community a letter, stating its preliminary total UI work plan expectation.The City will have until September 15,2013 to submit its mitigation plan. If you have any questions regarding the attached chart,the Council On-going UI program,or data that the MCES may have regarding your community's flow discharges to the MDS, please do not hesitate to call me at(651)602-1151. Sincerely, R -- A . U.�� Kyle . Colvin, PE Assistant Manager, Engineering Services Enclosure(s) cc: Lona Schreiber, Metropolitan Council Representative,District 2 Bill Cook, Manager, Engineering Services METROPOLITAN C O U N C I L IMURN (D IT 04 0 GO (D C14 0 V- T- T- I- 00 .............. ..... .. .............. ..... �L....... -77 Em- 0 E CV Ira ................. .............. ......... ........ ... ... ca 0 At a) O 3 IT < > < 0 CL F- F- F- F- (9 0 (D 0 ............ ........... ........ ...... ......... < < < < 0 0 0000 CL 0500 00 . .........:.......... ...... ............. .......... ........ ...... 00. (0 It N 0 OD 0 V- T•- 6 O O ci GSW Ilelu1e%J $ "� N O O co d N O N � r IN NN co ICON O� c7 C �a Q O C U, N d 8 r-of `V off.... .......... ........ .i..... �N �o O F- V N c a. 'm m .a 00 $ .......... ......... ......... ... m > O a 0 a. � < < co co to co N J 0000 r r r r p F- � �— r- V t9 c9 c9 LE < < < < o O mmmm `~ ........... ........... .:........................... :. N CL oo © o C UUUU �. $ 7i o ei O O lf) O LO O V C6 N N r �- O O 0 asw Central Garage Sewer/Water CITY OF COLUMBIA HEIGHTS Engineering Streets Public Works Department Refuse Parks 637 38th Avenue N.E. Columbia Heights, MN 55421-3806 Office(763) 706-3700 TDD(763) 706-3692 Fax(763) 706-3701 August 20, 2013 Mr. Jason Willett Finance Director Metropolitan Council Environmental Services (MCES) 390 Robert Street North St.Paul,MN 55101 RE: Inflow/Infiltration (I/I) Surcharge Preliminary Billing Notice Letter Dated July 30, 2013 Dear Mr. Willett: The City of Columbia Heights is in receipt of a letter from Kyle Colvin, Assistant Manager of the Engineering Services Group at MCES, dated June 18, 2013 identifying that the City had an excessive wastewater peak discharge at MCES Meter Station M-106 on May 19, 2013. In addition, we received your letter dated July 30, 2013 outlining an estimated preliminary 2014 I/I Surcharge of$126,170 that would carry over the next three years at that same amount. This letter is in response to the required deadline for the City to respond to the Colvin letter by September 15, 2013 as to how the City will address this surcharge from the exceedance at M- 106. We recognize, per your letter of July 30th, that we have an opportunity to have the preliminary surcharge number adjusted or apply for credits to reduce or eliminate that dollar amount. The City does not typically experience high flow issues at M-106. It has come as a shock to us that the service area contributed sufficient flow to this meter station to cause an exceedance at this time. The only previous exceedance event in the M-106 area, that we can recall, was the massive rain event on July 16, 2011. Beginning in mid-May through June 2013, the M-106 service area experienced severe weather that resulted in lighting knocking out power to much of the area, including the Silver Lake Lift Station. There was extensive tree damage and also considerable localized flooding from heavy rainfall and catch basins plugged with windblown leaves. Both of these circumstances may have contributed to the unusual series of exceedances recorded at M-106. Historically, the service area of Meter Station M-107 has experienced regular high flow events and therefore we have been working diligently to address I/I flow in this area. We have found success in reducing I/I at Meter Station M-107 through a series of efforts that include: • Sump pump inspections and elimination of pump connections to the sanitary sewer through out the entire City including the M-106 meter area. • Televising and lining of City sewer mains. • Manhole rehabilitation and sealing. • Flow monitoring to isolate problem areas. • Smoke testing to identify cross connections in private and public sewers. SERVICE IS OUR BUSINESS www.c4co1umbia-heiphts.mn.us EQUAL OPPORTUNITY EMPLOYER THE('ITV nF C.ni I IMRIA HFIC:HTS nnFS NnT n1.4(:RIMINATF nN THE RACK nF nICARII ITV IN FKAPI nVAAFNT nP TNF PPn%/ICInN rW CFD\/I/`FC Mr.Jason Willett Metropolitan Council Environmental Services August 20,2013 Page 2 Because of the success in reducing I/I in M-107 service area, the City would propose to undertake a similar program to address the exceedance at M-106. Toward that end we would propose the following: Task Timeline 1. Hire Foth Infrastructure and Env. (Foth) to assist with investigations Done (Foth assisted with work in the M-107 service area) 2. Install flow monitoring at critical points within M-106 service area Sp-14 3. Inspect all sewer manholes in and around surface drainage areas F-13 4. Televise City mains within M-106 service area F-13/Sp-14 5. Review run times and operation of Silver Lake Lift Station F-13 6. Manhole inspections and sealing S-14 7. Smoke testing M-106 service area S-14 The City believes that the exceedance on May 19, 2013 was an isolated event due to the unusual combination of a heavy rainfall and wind event and not indicative of a larger problem for the M- 106 service area. Therefore we are hopeful that we will find,through the program listed above, a few identifiable sources that can be quickly addressed, at a cost that will be less than the proposed surcharge over the next four years. We anticipate that future surcharge amounts can be reduced if our investigations, in the M-106 service area, successfully identify and address the sources of the 2013 recorded peak flow rates. We would welcome the opportunity to meet in person with MCES staff to discuss this event and to work together to develop an approach to thoroughly investigate the cause if this exceedance. Very truly yours, Kevin Hansen, Director of Public Works/City Engineer City of Columbia Heights, MN cc: Walt Fehst, City Manager Joseph Kloiber, Finance Director G:PW/Projects/2013/1313-I-I mitigation/Response Letter to MCES regarding I and I exceedance at Meter 106.doc 2 CITY COUNCIL LETTER Meeting of September 3rd, 2013 AGENDA SECTION: WORK SESSION ORIGINATING CITY MANAGER NO: DEPARTMENT: PUBLIC WORKS ITEM: SEEK BIDS FOR THE 2013 BY: K. Hansen BY: MISCELLANEOUS SANITARY SEWER DATE: 8/28/13 DATE: REPAIRS Annually, Public Works staff cleans and inspects portions of the sanitary sewer system, including pipe and structures. Through underground televising, staff has determined that the locations identified below will need pipe segments replaced. In these areas the pipe has lost shape,pipe segments are missing or the pipe has settled significantly which decreased pipe capacity. In these areas, the pipe depths are in excess of our safe operating range for depth or conflicts with other utilities. 1. Arthur Street—44th to 45th Avenues 2. Easement north of Polk Circle 3. Jefferson Street—north of 40th Avenue 4. 48th Avenue—east ROW of University Avenue Repairs 1-3 are scheduled for lining and will need to be repaired prior to the entire pipe segments being lined. COUNCIL ACTION: