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Home My WebLink AboutAugust 4, 2003 Work SessionCITY OF COLUMBIA HEIGHTS 590 40th Avenue N.E., Columbia Heights, MN 55421-3878 (763) 706-3600 TDD (763) 706-3692 Visit Our Website at: wwmci, columbia-heights.mn, us ADMINISTRATION mayor Julienne Wyckoff Covncilmombers Tami Ericson Bruce Kelzenberg Bruce Nawrocki Bobby Williams C~ Masagor Walter R. Fehst NOTICE OF CITY COUNCIL MEETING to be held in the CITY OF COLUMBIA HEIGHTS as follows:' Meeting of: Date of Meeting: Time of Meeting: Location of Meeting: Purpose of Meeting: COLUMBIA HEIGHTS CITY COUNCIL AUGUST 4, 2003 7:00 P.M. CONFERENCE ROOM 1 WORK SESSION AGENDA 1. Audit Report 2. Generator quotes 3. Flood Mitigation Measures from June 24/25 Storm Event 4. Capital Equipment Replacement for Parks Unit# 218 - Ford 1-Ton Dump Track The City of Columbia Heights does not' discriminate on thc 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 706-3611, to make arrangements. (TDD/706-3692 for deaf or hearing impaired only) THE (~ITY OF COLUMI~IA HEIGHTS DOES NOT DISCRIMINATE ON THE BASIS OF DISABILITY IN EMPLOYMENT OR THE PROVISION OF' SERVICES EQUAL OPPORTUNITY EMPLOYER CITY OF COLUMBIA HEIGHTS DATE: AUGUST 1, 2003 TO: FROM: WALT FEHST CITY MANAGER WILLIAM ELRITE [.~ FINANCE DIRECTOR RE: FUND BALANCES At the City Council work session with the auditor on July 9th there was some discussion in relationship to City fund and cash balances. The attached worksheet shows a breakout of the City's available fund balances. This worksheet is divided into four basic categories or classifications of fund balances. Classification I is basically funds that are strictly at the discretion of the City Council with no restrictions. However, the majority of these funds are needed for cash flow purposes and if they were expended it would necessitate borrowing money for cash flow. The funds in classification 2 have some designations placed on them; however, most of these funds are under the control of the City Council and by City Council action, could be rededicated. The majority of the funds in this classification are primarily for long-term capital equipment and building needs. The funds in classification 3 have some outside restrictions and regulations governing them and the council's use of these funds are limited to the purposes prescribed by those restrictions. The funds in classification 4 have very rigid outside restrictions that limit their use to a specific purpose. The bottom line is that when you look at the City's fund balance overall for all funds it is relatively high, but when you break it down into the various classifications and restrictions, the amount of money that is discretionary to be used for any purpose is more limited. I am attaching this worksheet for distribution to the City Council prior to our next meeting with the auditor in hopes that it will help clarify our restrictions on fund balances and will enable the council to ask any further questions they may have of staff and the auditor at the next audit review meeting. If you would like any additional information, please let me know. WE:sms 0308011CM Attachment City of Columbia Heights Fund Balance: FYE: 12/31/2002 Prepared 7/31/2003 Restriction Note Fund Balance Cash Fund Fund Description Per CAFR Total Balance 1 101 General Fund 3,515,606 3,515,606 3,167,454 1 201 Community Development Fund 13,247 13,247 22,057 I 204 Economic Development Auth 94,238 94,238 94,670 1 225 Cable Television 2,439 2,439 0 1 226 Special Project Revenue 4,717 4,717 1,976 I 235 Rental Housing 39,057 39,057 42,388 1 240 Library 50,871 50,871 56,048 1 609 ~Liquor 2,899,546 2,899,546 1,956,291 2 .270 DARE Project 20,573 20,573 20,573 2 410 Sheffield Redevelopment 483,133 483,133 483,133 2 411 Capital Imp General Gov Bldgs 2,991,025 2,991,025 2,973,323 2 412 Capital Improvement Parks 753,551 753,551 745,807 2 420 Capital Improvement Development 882,769 882,769 888,253 2 430 Infrastructure Fund 377,443 377,443 214,554 2 431 Capital Eq Replacement-General 4,553,841 4,553,841 4,510,277 2 434 Capital Eq Replacement-Garage 24,783 24,783 24,551 2 436 Capital Eq Replacement-Liquor 27,115 27,115 26,839 2 437 'Capital Eq Replacement-Data Pro 27,691 27,691 27,409 2 450 Capital Building Library 200,000 200,000 200,000 2 701 Central Garage 265,922 265,922 73,776 2 720 Data Processing 468,153 468,153 481,634 2 881 Contributed Projects-Recreation 70,925 70,925 71,050 2 883 Contributed Projects-General 28,340 28,340 29,772 2 884 Insurance 585,445 585,445 567,543 2 887 Flex Benefit Trust Fund 31,742 31,742 39,321 Total City Council Controlled Restrictions 1t,792~451 11,792,451 11,377,815 3 213 Parkview Villa South 102,590 102,590 135,404 3 265 Confiscated/Forfeited Property 13,121 13,121 13,121 3 414 Capital Improvements PWS 749,933 749,933 742,072 3 415 Capital Improvement PIR (186,426) (186,4267 0 3 432 Capital Eq Replacement-Sewer 431,279 431,279 427,008 3 433 Capital Eq Replacement-Water 325,132 325,132 , 0 3 438 Capital Eq Replacement-Storm Sewer 12,352 12,352 12,255 3 439 Capital Eq Replacement-Fire 663,478 663,478 656,402 3 440 Capital Eq Cable TV 300,000 300,000 300,000 3 601 Water Utility 4,095,714 4,095,714 39,923 3 602 Sewer Utilit), 3,863,745 3,863,745 1,294,614 3 603 Refuse Fund 778,388 778,388 605,231 3 604 Storm Sewer Fund 1,017,408 1,017,408 5,754 3 631 Water Fund Debt Service (581,362) (581,362) 0 3 '632 Sewer Fund Debt Service (28,540) (28,540) 4,711 3 643 Storm Sewer Fund Debt Service (864,315) (864,315) 0 3 651 Water Construction Fund (678,675) (678,675) 0 3 652 Sewer Construction Fund 1,492,429 1,492,429 953,572 3 653 Storm Sewer Construction Fund 143,838 143,838 89,667 City of Columbia Heights Fund Balance: FYE: 12/3112002 Prepared 7/31/2003 Restriction Note 3 3 4 Fund 888 890 212/402 29O/405 390/401 Fund Description Police/Fire Cont Reserve Compensated Absences State Aid Maintenance/Constr Downtown Maintenance Capital Improvements Fund Balance Per CAFR 0 16,658 (725,704) 732,292 529,499 Total 0 16,658 (725,704) 732,292 529,499 Cash Balance 264,160 564,153 193,991 730,200 530,036 202 203 Anoka County CDBG Parkview Villa North (25,317) 474,393 (25,317) 474,393 0 432,356 4 4 250 CHASE 49,487 49,487 35,641 4 276 Local Law Enforce Block Grant 6,511 6,511 23,290 4 277 COPS More 96 Federal Grant 314 314 314 4 278 279 299 376 377 378 382 4 4 4 4 4 4 385 4 383 4 387 389 407 4 Juvenile Justice Grant COPS: School Partnership Grant BRLF/HRA Tax Increment Bonds Sheffield DS TIF: Medtronics Capital Appreciation Bonds 1990 Tax Increment Refunding Bonds 1991 Multi-Use Redevelopment Plan GO Improvement Bonds 1999A TIF: R8: Transition Block Redev TIF: District #2 Permit Surcharge 4 963 328,228 535,871 (490,518) 160,132 963 0 4 328,228 535,871 (490,518) 160,132 34O 301,241 465,176 585 210,452 4 88O 0 0 0 0 0 0 (52,579) 704,354 (52,579) 704,354 9 0 (2,24!)I (2,243)0 (33,603)1 697,819 8,970 4 885 Escrow 0 27,884 4 379/386 TIF: Scattered Site Housinq (33,603) 916 rTOTAL FUNDS 32,271,008 32,271,008 I 26,485,966 Note: 32,271,008 32271008 26,485,966 Some available fund balances may have limitations on them by the nature of the fund. For example, Street State Aid Funds can only be used for State Aid Streets. Other similar restrictions apply to some of the other funds. These funds are at the discretiOn of the Council with no restrictions. These funds have some restrictions but most of these are controlled by the Council. IThese funds have some outside restrictions and the Council's use of these funds are limited. These funds have dgid restrictions by outside sources limiting their use to specific purposes. WORK SESSION August 4, 2003 · CITY COUNCIL LETTER Meetinl~ of Aul~ust 11, 2003 AGENDA SECTION: Consent ORIGINA'IING DEPARTMENT CITY MANAGER NO. CIVIL DEFENSE APPROVA~L:d// BY: Dep. Dir. Charles Th~ompson BY: ITEM: Award replacement building generator bid to DATE: July 31, 2003" Cummins N Power DATE: NO. BACKGROUND The cUrrent generator that supplies electrical power to City Hall has several issues. The generator itself is old and antiquated, which makes repairs virtually impossible. When repairs are needed, parts are difficult or impossible to find. When the City loses electrical power, this generator automatically starts and supplies limited power to the building--limited to only sections of City Hall, the Police Department, and Fire Department. This generator will not power any ventilation systems. So, if power is lost in the summer or winter months, we cannot supply this building with either heating or cooling functions. Finally, this generator is no longer safe to operate. It is fueled by natural gas and when running, the generator emits dangerous levels of carbon monoxide. The Fire Department has monitored these levels when the generator is running and has found these levels to hit 450 PPM, which is the maximum reading on the monitoring equipment we currently have. If the city would be faced with a major catastrophic event and power is disrupted, we would not be able to open and operate our EOC (Emergency Operations Center), which is located in the Police/Fire Training Room. In fact, the Police/Fire Training Room is adjacent to the generator room, and when the generator starts, the gasses from this room spread to the Police/Fire Training Room. In addition to the above-mentioned problems, very few essential computers would be accessible and lighting would be very limited. ANALYSIS/CONCLUSION The proposal is to replace the generator with a generator that will supply the entire City Hall complex. The replacement would be a 100 KW liquid cooled diesel generator mounted on a steel base, 120/208 volt, 3 phase, 4 wire 60 hertz, with a maximum amperage rating of 347 amps, and would be set outdoors on a concrete pad. It would have the capability of running and supporting the City Hall complex for 24 hours at full supply power without refueling. This replacement generator is budgeted for in the 2003 Civil Defense budget in the amount of $50,000. The Deputy Director of Civil Defense sent letters to three major generator vendors, giving them generic specifications for the generator for their review and quotation submission. The vendors returned the following quotations: Interstate Detroit Diesel Generator and transfer switch Pad and installation Total $29,604 $15,369 $44,973 Ziegler Cat Power Systems Generator and transfer switch Pad and installation Total $25,519 $10,077 $35,596 Cummins N Power Generator and transfer switch Pad and installation Total $25,149 $ 9,454 $34,603 Mayor and City Council Page 2 July 31, 2003 This information was sent to the Public Works Director for his review. After the Public Works Director reviewed the information, the Shop Foreman also reviewed the information and sent his recommendation to the Deputy Director of Civil Defense. RECOMMENDED MOTION: Move to award the replacement building generator bid as quoted by Cummins N Power, based upon their low, qualified, responsible bid in the amount of $34,603, with funding from fund 431-42500-5180; and authorize the Mayor and City Manager to enter into an agreement for the purchase of same. CT:mld 03-03 COUNCIL ACTION: 2003 GENERATOR QUOTATION 1. LIQUID COOLED DIESEL ENGINE GENERATOR SET MOUNTED ON A STEEL BASE. STANDI~y RATED 100KW, t25KVA, 1201208VOLT 3 PHASE, 4 WIRE, 60HZ, 347 AMPS ~ 0.8PF GENERATOR/ELECTRICAL OPTIONS INSTALLED LOOSE GENERATOR PART NUMBER ISOCHRONOUS GOVERNOR SAFEGUARD BREAKER MOLDED CASE LINE CIRCUIT BREAKER, 400 AMPS OVERVOLTAGE PROTECTION CONTROL OPTIONS INSTALLED LOOSE ~IGHTED CONTROLLER REMOTE ANNUNCIATOR PANEL REACTIVE DROP COMPENSATION LOAD SHARE MODULE REMOTE VOLTAGE REGULATOR , VAR/POWER FACTOR VOLTAGE REGULATOR RUN RELAY COMMON FAILURE RELAY 10120 - RELAY DRY CONTACTS FOR ALARMS PRE-HIGH ENGINE TEMP. SENDER AND LAMP-YELLOW PRE-LOW OIL PRESSURE SENDER AND LAMP-YELLOW LOW WATER TEMP. SENDER AND LAMP-RED BATTERY, QTY. OF I ,900 CCA, 12 VOLT DC, WET 3ATTERY RACK AND CABLES BATTERY CHARGER, AUTOMATIC EQUALIZE/FLOAT TYPE COOLING SYSTEM OPTIONS INSTALLED LOOSE UNIT MOUNTED RADIATOR RADIATOR DUCT FLANGE BLOCK HEATER WITH THERMOSTAT BLOCK HEATER ISOLATION VALVES INITIAL ANTIFREEZE FILL LUBRICATION SYSTEM OPTIONS INSTALLED LOOSE OIL DRAIN EXTENSION INITIAL LUBRICATING OIL FILL FUEL SYSTEM OPTIONS INSTALLED LOOSE FLEX FUEL LINES FUEL HAND PRINING PUMP I INSTALLED I LOOSE BBL I WATER FILTER SEPERATOR ASE FUEL TANK, 200 GALLONS, 24 HOUR RUN TIME Q 100% LOAD/ E WALL WITH, LOW LEVEL FUEL ALARM, HIGH LEVEL FUEL ALARM IN BASIN ALARM, EMERGENCY I NORMAL VENT, 2" LOCKING FILL CAP I I EXHAUST SYSTEM OPTIONS II'STALLED LOOSE CRITICAL GRADE EXHAUST SILENCER I ENCLOSED IN HOUSING FLIXIBLE EXHAUST CONNECTOR, STAINLESS STEEL ~'ILENCER MOUNTING FOR HOUSING TAIL PIPE AND RAIN CAI~ STRUCTURE/MOUNTING OPTIONS INSTALLED ~ LOOSE VIBRATION ISOLATORS MOUNTED BETWEEN THE ENGINE/GENERATOR AND SKID BASE ALUMINUM SOUND ENCLOSURE(OR =i/INSULATED/HEAVY DUTY/PREMIUM I SKID END CAPS MISCELLANEOUS OPTIONS INSTALLED LOOSE AIR CLEANER RESTRICTION INDICATOR CLOSED CRANKCASE VENTILATION SYSTEM O&M MANUAL, QUANTITY. 1 MINIMUM 1 YEAR OR 2000 HOUR WARRANTY STANDARD / M' T "c I AUTO lC TRANSFE SWIT H (1) ASCO MODEL 300 SERIES AUTOMATIC TRANSFER SWITCH WITH SOLID MICROPROCESSOR LOGIC, AC VOLTAGE, THREE POLE, THREE PHASE, FOUR WIRE, NEMA 1 ENCLOSURE RATED 800 AMPERE. SUPPLIED WITH THE FOLLOWING OPTIONS ALL TIME DELAYS ADJUSTABLE 0-99 MINUTES IN ONE SECOND INCREMENTS TDES (3 SECONDS) TDNE (0-99 MINUTES) TDEN (0-99 MINUTES) TDEC (5 MINUTES) PLANT EXERCISER, WITH ! WITHOUT LOAD SELECTOR SWITCH !NPHASE MONITOR, BOTH DIRECTIONS [OPTIONS ELECTRIC INSTALLATION TO INCLUDE: INSTALL 800 AMP SWITCH I PROVIDE CONCRETE PAD/WIRING FROM [SWITCH TO GENSET I MAKE CONNECTIONS IN GENERATOR I RESTORATION OF GRASS AND LANDSCAPE/ rEED TO GENSET FROM UTILITY I LOAD ANALYSIS I PERMIT FEES OPTIONS CONTINUED DELIVERY AND RIGGING SUPPLIED BY GENERATOR PROVIDER GENERATOR SET IS COMPLIANT FOR OPERATIONS IN LIFE SAFETY LOCATIONS/ GENSET INCLUDES NFPA 110 PRE ALARM SENDERS GENERATOR 'HOUSING WILL CONTAIN PREMIUM SOUND ATTENUATION SUITABLE FOR HOSPITAL SITES ENCLOSED SILENCER I PREMIUM ALUMIUM OR EQUAL TO SUB SASE TANKS INCLUDE ALL ALARMS AND CERTIFICATIONS FOR OPERATION IN SITE MUNICIPALITY THIS QUOTATION WILL INCLUDE COMPLETE INSTRUCTIONS FOR THE INSTALLATION, OPERATION AND MAINTENANCE OF ALL EQUIPMENT DESCRIBED HEREIN, WITH TEST AT JOB SITE. CITY COUNCIL LETTER Meeting of: 8/4/03 AGENDA SECTION: WORK SESSION NO: ITEM: FLOODING MITIGATION PLAN FROM JUNE 24 & 25 STORMS, FOLLOW-UP TO JUNE 30, 2003 REGULAR CITY COUNCIL MEETING ORIGINATING'bEPARTMENT: PUBLIC WORKS BY: K. Hansen~ DATE: 7/30/03-:''~ CITY MANAGER BY: DATE: /Background: A severe rainfall event occurred the evening of June 24th and early morning of June 25, 2003, measuring 5.47 inches of rain in a 3- hour period (exceeds a 100-year storm event). As a direct result, several areas of the City experienced localized flooding from surface water and sanitary sewer system overload 03ackups). A report was provided to the City Manager on June 26m detailing the extent of the storm damage to both public and private properties. At the June 30t~, 2003 regular City Council meeting, several · residents from the Jackson Pond Area spoke at open mike to extent of the backups in this area and questioned what can be done and what was going to be done by the City. The following represents a review of the existing conditions in the Jackson Pond area, · and presents a short and long term plan to address the flooding problems and the concerns raised by residents at the June 30th Council meeting. Analysis/Conclusions: The June 25th storm impacted many properties in the City of Columbia Heights. Two updated maps are shown, one which depicts properties impacted by surface water flooding, titled Storm, and the second which highlights properties impacted sewer backups, titled Sanitary Sewer. This report .will focus on sanitary sewer flooding, and does not address surface water flooding issues, due to the fact that the storm event greatly exceeded an acceptable level of protection, or a 100-year storm event. Sanitary sewer back~, ps were mainly concentrated, and most severe, in the area around Jackson Pond. The properties highlighted represent calls receibed the morning of the storm, calls received following the storm and follo~ving the City Council meeting, and the listing provided by our insurance carrier, the LMCIT. The backups in the affected homes varied from just around the floor drain to over 15 inches of gray water in the entire basement. Due to the type of storm, high intensity large peak, and the short lag time to when backups occurred in this area, system inflow and to a lesser extent infiltration are the likely cause. Inflow and infiltration (I/I) is unnecessary water that enters the sanitary sewer system, but can be completely separate in origin. Infloxv is storm water runoffor any other surface water that flows through a direct connection to the sanitary system. This may occur as a result of connected doxvnspouts, area drains, holes in the manhole covers, cross connections from the storm sewer, or connected sump pumps. Infiltration is ~roundwater that enters the sanitary collection system through cracked pipes, leaky joints and deteriorated manholes. A graph depicting the relationship of I/I to regular sanitary sewer system flow is attached as figure 1. To meet mandated federal requirements, the City conducted an I/I study in 1983. The study noted that 'many of the rainfall related problen~s associated with inflow occur i~ the Jackson Pond area,' and 'basements have backed up 7 times in the last three years and app,'oximately 22 to 25 residents are affecte'd by a 1 -1/2 inch per hour rain.' The study concluded that the City of Columbia Heights does not have a major I/I problem, and that 'the system is adequate to handle the peak-flow rates generated, during the design storrn,' but that certain areas (5 of 15) of the City may benefit from a flow reduction program. A flow red~fion program was identified recommending comprehensive cleaning and televising, manhole lid/frame replacements, linings of sanitary server, COUNCIL ACTION: CITY COUNCIL LETTER Meeting oE 8/4/03 AGENDA SECTION: WORK SESSION NO: ITEM: FLOODING MITIGATION PLAN FROM JUNE 24 & 25 STORMS, FOLLOW-LIP TO JUNE 30, 2003 REGULAR CITY COUNCIL MEETING ORIGINATINO' BE~'ARTMENT: PUBLIC WORKS BY: K. Hansen DATE: 7/30/03 CITY MANAGER BY: DATE: and inflo~v reduction. The estimated cost to perform all of the recommendations in the report to reduce VI was $5,688,020 (1983 dollars). The City of Columbia Heights has performed and continues to implement many of the recommendations of the 1983 report. One of the questions raised by a council person at the June 30t~ regular meeting was the number of homes that had backflow · pr69ention type devices and their, effectiveness. Attached is a map and listing of addresses (figure 2) that we have on record for installed backflow devices, when the City offered assistance with their installation in the 1970's. We have also surveyed the area · around'J'ackson Pond via telephone and a copy of the survey questions and summary of those findings is also attached. Recommended Action Plan Short Term 1. Backflow Valves: Consider installing new shear gate & swing check backwater valves in affected homes. A diagram of this type of combination valve is attached. This unit has both a swing-check valve and mechanical gate valve within a single housing. The public works gt~perintendent has put together a listing ofpro's and con's for this type of installation. The estimated cost for a single valve is $1,293, plus installation. Depending on access and the degree of difficulty, these could i>e installed for about $2,000 - 3,000 each. A listing of other, but not recommended backwater valves is also included. 2. Sanitary Sewer Lining: As part of the Zone 5 Street Rehabilitation program, city staff cleaned and televised all of the sanitary sewers in the Zone. The segment along Van Buren was found to have piping that would benefit from lining, but was delayed to complete the trunk line. This work could be added to the 2003 lining program, currently under contract on the trunk main and completed in 2003. Our televising records indicate that 610 lineal feet of pipe to be lined at an estimated cost of $15,000 to 20,000. 3. a. Level Alarm Device: This would be a float style controlled device that would activate an alarm when the level in a manhole rises above a pre-determined elevation. There was a similar device installed in a sanitary manhole SE of Jackson Pond, but it was found to be inoperable during the Zone 5 street work, and apparently had not been operating for some time. A similar device would be installed with an audible and visual alarm device. The estimated cost for a sanitary alarm system is S 3. b Individual Water Alarm Detector: A water alert sensor could be installed in the basements of homes which senses the presence of water, and is not affect, ed bY.humidity or submergence. A brochure is attached providing details on one such detection system. Battery operated versions run from $400 to 600, each. COUNCIL ACTION: CITY COUNCIL LETTER Meeting of: 8/4/03 AGENDA SECTION: WORK SESSION NO: ITEM: FLOODING MITIGATION PLAN FROM JUNE 24 & 25 STORMS, FOLLOW-UP TO JUNE 30, 2003 REGULAR CITY COUNCIL MEETING ORIGINATING' ~}EPARTMENT: PUBLIC WORKS BY: K. Hansen DATE: 7/30/03 CITY MANAGER BY: DATE: Long Term 1. Continue Inflow Reduction Measures: Continu. e..to make system improvements as the Street Rehabilitation xvork progresses. This includes replacing manhole lids/casting, installing boots on manholes in street lmv points, manhole repairs or replacements, and lining of sewer pipe. Color samples of manhole boots are attached. 2.' 'Accelerate Trunk Sewer Lining in 2003: As part of the Zone 5 Street Rehabilitation Improvements, the trunk sanitary line through this area, from Central to University, was cleaned and televised. Based upon those findings, it was recommended to .... lift, the entire segment from Central to University, consisting of 10, 12 and 15 inch pipe. Due to the length and cost, this segment was split into three sections, with the first section east of University completed in 2002, and the second section midway currently in progress. Staffrecommends adding and completing the third section, completing this vital trunk segment to Central, in 2003. Staff has estimated this cost to be approximately $88,000. Due to the cost, plans and specs should be prepared and it should be publically bid. 3. Expand Sewer Lining Program: Over the last several years, $50,000 has been budgeted annually for sanitary sewer lining. Staff recommends considering expanding the program to $75,000 or $100,000, annually, for the next five years. The funding level for this program can then bi evaluated and amended, if necessary. 4. Develop an Illicit Discharge Elimination Program: An Illicit Discharge Elimination Program would be the most involved ~f any of the remediation measures, and could also be the most expensive. The ultimate goal of this program would be to systematically eliminate to the public sanitary sewer system sources of illicit connections from private sources, such as sump pumps, foundation drains and leaking service lines. All of the physical remediation measures identified to date involve reducing or eliminating I/I in the public system. The MCES and the Rural Water Association have estimated that VI in the private domain can account for up to 60 or 70 percent of the total I/I in a municipal system. A recently completed sump pump disconnect program (Waseca) found that nearly 70% of the remaining I/I was from privately generated sources. The following steps outline an approach to develop and implement such a program: a. Ordinance Development b. Public Education c. Public Informational Meetings d. Advertising Campaign ,. e. Training of City Staff, Local l~lumbers, and Contractors f. Site Inspections, Disconnections, and Reinspections g. Enforcement h. Other (potentially smoke and dye testing of non-residential properties) COUNCIL ACTION: CITY COUNCIL LETTER Meeting of: 8/4/03 AGENDA SECTION: WORK SESSION NO: ITEM: FLOODING MITIGATION PLAN FROM JUNE 24 & 25 STORMS, FOLLOW-UP TO JUNE 30, 2003 REGULAR CITY COUNCIL MEETING ORIGINATIN'(~'DEPARTbIENT: PUBLIC WORKS BY: K. Hansen DATE: 7/30/03 CITY MANAGER BY: DATE: This report is not intended to be all inclusive of.a!! properties impacted by the June 25th, storm event, but provide an action plan that focuses on one area of the City, with techniques that can benefit many areas of the City of Columbia Heights. Attachment: Maps - sanitary and storm properties Figure 1 - I/I relationship to sanitary flow Map - backflow devices Figure 2 - backflow address listing Backflow Survey and Summary New backflow valve / Types of backwater valves Pro's / Con's b/' Backwater valves Interior floor water detection system Boot seal brochure COUNCIL ACTION: : L i i i I1 Ii ii il Ii Iii L RAINFALL EVENT rESTIMATED OR MEASURED BYPASSED FLOW OR OVERFLOWS / /---NORMAL DRY WEATHER, \ r~ /SEWAGE FLOW PATTERN RAINFALL EVENT INFLOW ..... _ MID NOON MID NOON MID O I 2 TIME IN DAYS FIGURE 1 GRAPHIC IDENTIFICATION OF INFILTRATION ! INFLOW Columbia Heights ResidentS-hat Installed A Back Water Valve System in 1975 1. Edward Holm 2. Joe Skubic 3. Frank Mathews 4. Nabel Netteberg 5. George Holmquist 6. Henr3' Novitsky 7. TL Sandback 8. Walter Chies 9. Howard Mumbleau 10. Norbert Husmann 11. Rober Kallnoski 12. Alois P. Kroll 13. Theodore Holstein 14. Theodore Holstein 15. Resident 4245 Jackson Street ~.,E ,. , 4141 Reservoir Boule'/'~/rd 4350 Quincy Street NE. 4257 Van'Buren Street NE 1215 37th Avenue NE 4256 Van.Buren Street NE 4257 Quinc): Street NE 4020 Tyler Street NE 4356 Quincy Street NE 4336 Quincy Street NE 4328 Quincy Street NE 4256 Jackson Street NE 4340-42 Quincy Street NE 4344-46 Quincy Street NE 4257 Jackson Street NE Columbia Heights Businesses That Installed A Back Water Valve System in 1991 1. Monarch Chemical 2. Rainbow F6od Store 3. John Gaultlnc. 3910 Jackson Street NE 4300 Central Avenue NE 4849 Central Avenue NECreated on 7/10/2003 9:54 AM FIGURE 2 ,i,. '" ,I, II ii TO: FROM: SUBJECT: CITY ~)F COLUMBIA'HEIGHTS Public Works De)artment KEVIN HANSEN PUBLIC WORKS DIRECTOR/CITY ENGINEER joANNE BAKER PUBLIC WORKS SECRETARW SURVEY INFORMATION FROM STORM RELATED EVENTS OF JUNE 24 AND JUNE 25, 2003 DATE: JULY 30, 2003 In lieu of doing a survey questionnaire by mail, Public Works staffplaced calls to residents on the attached list along with random calls to the 4300 block of Quincy Street, 4200 block of Jackson and Van Buren Streets. Most of the residents surveyed claimed their problem was due to sanitary sewer back-ups but take into account a few were not sure if it was sewer problems or water seepage. Residents attempted to call: 66 Reason for no response: not home, no phone number listed, or not interested Actual responses: 25 Of the households that were surveyed, the following results were given from the questions asked: How long have you lived in your home? · Less than 10 years - 6 · 20+ years - 1 · 25+ years - 2 · 30+ years - 4 · 40+ years - 9 · 50+ years - 3 Do you have a backwater valve? · Yes - 6 · No - 19 Memorandum to Kevin Hansen July 30, 2003 Page 2 What is your opinion on the effectiveness of the valve in preventing sewage? Not effective - 2 Moderately effective - 1 Highly effective - 2 No comment. Did you sustain any flooding in your basement June 24/June 25? · Yes - 18 · No - 6 How many times in the last 15 years can you recall any backups in your basement during a rain storm? · 0 times - 5 · 1 time - 3 · 2 times - 4 · 3 times - 4 · 4 times - 2 · 5 times- 1 · 6 times - 1 · 7 times- 1 · 10 times - 1 · 2 didn't recall · 1 water only Additional information/comments from the residents surveyed · Get it fixed · City has not helped the handicapped people. Never done anything for the residents, may have to report this to the ADA and may have to write a letter to Mr. Nawrocki. · City should take full responsibility for residents' problems with sewer back-ups. · Very frustrated and angry with the sewer back-up situation. City should be responsible for the problem and make it a priority. Plans to attend a Council meeting again to express concerns. Memorandum to Kevin Hansen July 30, 2003 Page 3 Can't believe it's the homeowner's fault. Thinks it is a problem .with the City's line. Basically a water problem, itouse is the lowest in the area. Believes it was built over a creek as it was a Golf Course. Clear up the problem. Thinks problem was created when Crestview on'42na Avenue was constructed. Happy with the way the City responded to resident. Also, the insurance company contacted them. Never had sewage backup. City put in an additional drain which has worked. Suggests a trench line be built in backyard because when it rains, water ponds. Can't figure out why he has a sanitary sewer problem when his street is so high on the hill. Don't run storm sewer from LaBelle Pond. After City fixed sewer the last time, it's worse. Why can't the City get the problem fixed? It's disgusting. jb 2003 Sahitary Sewer Backup Survey This survey is being conducted in response to one Council member's questions regarding this kind of information. "; 1. Length of time in home Do you have a backwater valve - (flap gate or knife gate)? Any previous devices, If so, what kind? [] Yes [] No [] Not sure If yes, when was it installed? If no, go to question #4. ~' o What is your opinion on the effectiveness of the valve in preventing sewage backups? [] Not effective [] Moderately effective [] Highly effective Did you sustain any flooding in your basement June 24/June 25? (Sewage only - backup through floor drains or basement toilets). [] Yes [] No o How many times in the last 15 years can you recall any backups in your basement, during a rain storm? []1 ,[]2 []3 []4 []5 Thank you. Do you wish to provide any additional information/comments or have any questions? 7/29/03