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Home My WebLink About02/03/2014 Council Work Session February 3, 2014 Time as indicated below are approximate Council Chambers Roll Call. Approval of Agenda, as proposed or amended. 3:35 p.m. EPA Requirements (CMOM/FOG/Footing Drains)-Submitted by Mayor Clark 4:35 p.m. Budget Review-Submitted by Michelle Weidner ADJOURNMENT Suzy Schares, CMC City Clerk/Human Resource Director 2/3/2014 Waterloo Sanitary Sewer Collection System Council Work Session February 3,2014 AECOM z CMOM Capacity Management Operation Maintenance W a:eroo Sanitary Sewer Collection S a 1 2/3/2014 3 CMOM - PERFORMANCE STANDARDS 1) Properly manage,operate,and maintain,at all times,the parts of the collection system that the permittee owns or over which it has operational control. 2) Provide adequate capacity to convey base flows and peak flows. 3) Take all feasible steps to stop,and mitigate the impact of, sanitary sewer overflows. 4) Provide notification to parties with a reasonable potential for exposure to pollutants associated with an overflow event. 5) Develop a written summary of their CMOM program and make it,and required program audits,available to the public upon request. 4 CMOM - PROGRAM GOALS 1) Identify Program Goals consistent with the General Standards. 2) Identify Administrative&Maintenance functions responsible for implementing the CMOM program and chain of communication for complying with the reporting requirements of SSO'S. 3) Include Legal authorities necessary for implementing the CMOM program. 4) Address appropriate measures and activities necessary to meet the performance standards. 5) Provide design and performance provisions. 6) Monitor program implementation and measure its effectiveness. 2 2/3/2014 CMOM — ELEMENTS 1) Must be Utility Specific. 2) Must have a purpose. 3) Must have a defined goal. 4) Must be in writing 5) Must be implemented by trained personnel. 6) Must have performance measures. 7) Must be subject to periodic evaluations. e Waterloo, Iowa — CMOM — GOAL PRELIMINARY The City of Waterloo,Iowa is adopting a Capacity, Management, Operation, and Maintenance program to assist management in improving Operation and Maintenance of the Sanitary Sewer Collection System serving the Residents and Businesses in the City of Waterloo. The CMOM will be used as a Management Tool to proactively address Sewer Capacity Limitations, Extraneous Flows to the Sanitary Sewer System, Prevent SSO's and Basement Back-ups,and Emergency Response to Sanitary Sewer issues. The CMOM will also be used as an Evaluation Tool for Planning and Prioritizing Capital Improvement Needs in the Sanitary Sewer Collection System. 3 2/3/2014 CAPACITY • Inventory existing sanitary sewer infrastructure. • Update mapping using GIS(Cartograph Database). • "User friendly"flow model. • "Extraneous"flow control measures. • Prioritize capital improvements. • Evaluate capacity issues for economic development decisions. e MANAGEMENT • Staffing and equipment budgeting. • Pretreatment program. • Prioritize capital improvements and budgeting decisions. • Council communications. • Ordinance changes. 4 2/3/2014 OPERATION • Cleaning and televising schedule. • Training. • Pumping stations. • Staffing and equipment. • Ordinance enforcement(FOG/Footing Drains'/etc.). • Capacity limitations. Wate loo Sanitary Sewer Collodion System AECO/I• 10 MAINTENANCE • Clean and televise sewers(Sanitary&Storm). • Training. • Pumping station maintenance and upgrades. • Preventive maintenance program and schedule. • Emergency response. 5 2/3/2014 11 WATERLOO SANITARY SEWER COLLECTION SYSTEM • ±400 miles of pipe—public. • Pipe sizes range from 6"—60"diameter. • Age range—New-> 100 years. • 7,500 Manholes. • 23 Pumping stations. • 26,500 Connections(customers). • ±300 miles sewer service pipe—private. 12 SANITARY SEWERS • Sanitary sewers are designed to carry waste water generated by the residential,commercial&industrial users. In theory: • Waste water flows should trace closely to the potable water used by the residential,commercial&industrial users. • Waste water flows in the sanitary sewer should be independent of weather conditions. 6 2/3/2014 13 Wastewater Flows compared to Waterloo Water Works Pumping Records 2012 Potable Water Wastewater Treated Precipitation Pumped-Gallons Gallons inches January 357,859,000 372,930,000 1.07 February 338,260,000 348,880,000 1.08 March 350,514,000 399,280,000 1.27 April 348,129,000 393,300,000 3.67 May 427,287,030 393,700,000 3.20 June 454,913,000 328,500,000 2.53 July 549,364,000 319,610,000 0.76 August 467,390,000 312,170,060 1.47 September 426,594,000 293,700,000 1.88 October 389,928,000 311,860,000 3.86 November 344,345,000 296,400,000 1.14 December 338,198,000 297,600,000 1.57 TOTAL 4,792,781,000 4,067,930,000 23.50 Precipitation records are taken from the Airport reporting station Wastewater Treated as%of Potable Water Pumped 85% 1 Waterloo Sanitary Sewer collection System AT: 14 Wastewater Flows compared to Waterloo Water Works Pumping Records 2011 Potable Water Wastewater Treated Precipitation Pumped-Gallons Gallons inches January 368,444,000 384,090,000 2.44 February 335,995,000 373,240,000 1.55 March 368,355,000 563,580,000 1.78 April 353,588,000 519,600,000 3.75 May 396,644,000 602,640,000 3.66 June 430,338,000 540,000,000 3.89 July 485,884,000 455,700,000 2.79 August 477,051,000 411,370,000 3.21 September 391,580,000 399,900,000 2.66 October 396,894,000 350,610,000 1.37 November 356,727,000 366,000,000 2.22 December 355,182,000 401,140,000 2.38 TOTAL 4,716,682,000 5,367,870,000 31.70 Precipitation records are taken from the Airport reporting station Wastewater Treated as%of Potable Water Pumped 114% 7 2/3/2014 15 Wastewater Flows compared to Waterloo Water Works Pumping Records 2010 Potable Water Wastewater Treated Precipitation Pumped-Gallons Gallons inches January 378,484,000 477,090,000 0.84 February 334,391,000 366,520,000 1.02 March 359,313,000 642,320,000 0.99 April 355,362,000 565,500,000 5.10 May 404,749,000 575,980,000 4.44 June 399,942,000 627,900,000 7.95 July 426,376,000 761,360,000 10.95 August 457,032,000 674,560,000 5.46 September 402,760,000 495,900,000 2.42 October 412,915,000 427,490,000 0.32 November 364,235,000 369,600,000 1.51 December 368,657,000 380,370,000 2.05 TOTAL 4,664,216,030 6,364,590,000 43.05 Precipitation records are taken from the Airport reporting station Wastewater Treated as%of Potable Water Pumped 136% Waterloo Sanitary Sewer Collection System ,d amMM to WEF Quote "The Water Environment Federations (WEF) Collection Systems Committee recognizes that Private Property I/I sources and lateral maintenance are some of the most difficult issues many waste water utilities face." 8 2/3/2014 Why is Private Property an issue? Private property I/I sources include: ■ Illicit connections to public sewer main such as " Downspouts F II Basement sumps Foundation drains ■ Private sewer laterals Improperly constructed Improperly repaired Poorly maintained ' , F MA pHe .d Menn<rt +-- Infiltration Source Lateral Defects ..... ® HOUSE,APARTMENT _ L. i'- OR COMMERCIALS BUILDING ROOF DRAIN . it .' `rl 1.. l...l..,.-�__ -;7C PROPER'Y CONNECTION ._.. _. .... MIIIIIMMEINIMIElli RIOHlgF:WAY LINE O(PRUEASEMENBLIC SLOET. , N►PRIVATE SIDE ) . SIDEWALK PROP LINE MISSING ■ \IIIII ,i CURB CAP CLEABOUT \ I I I Rom. ` DRAIN ERO BA IHTVB SANITARY SEWER LATERAL i YS".TPENETRAGON I , SIEMER.SINN ETC 4, 1 e 1� M NAY BE SEVERAL EXISTING \#IiSIUI EN OR DEFECTIVE �IrI IN1� �tiit I�� I UNDER KO) / SEPARATED \ BREAKS.CRACKS. % // CLEANOUT -STACK\ _No \ HOLES / .\ T•..BREAKS.CRACKS. \`PRIVATE SANITARY_ O --SERVICE TEEIWYE SEINER LATERAL MAINLINE (PSSL) SANITARY SEWER imWa/coda:..^,wN^UTM A .,A'FU xa. w rezSUa.u 9 2/3/2014 19 PRELIMINARY TOTAL NO. CONNECTIONS 100% 26,500 TYPE 1 CONNECTIONS 10% 2,650 TYPE 2 CONNECTIONS 30% 7,950 TYPE 3 CONNECTIONS 20% 5,300 TYPE 4 CONNECTIONS 35% 9,275 TYPE 5 CONNECTIONS 5% 1,325 20 PRELIMINARY CONNECTION Estimated Estimated Flow Estimated Flow TYPE Number GPM @ 1 gpm/F.D. MGD TYPE 3 5,300 5,300 7.6 TYPE 4 9,275 9,275 13.4 TYPE 5 1,325 1,325 1.9 TOTAL 15,900 15,900 22.9 The 1 gpm"average"rate is highly variable. If the average flow is 2 gpm,the contribution to the sanitary sewer system would be 45.8 MGD and if it was 3 gpm,the flow would be 68.7 MGD 10 2/3/2014 2 Waterloo, Iowa Footing Drain Disconnection Program Cost Estimate PRELIMINARY January,2014 TOTAL TYPE-1 TYPE-2 TYPE-3 TYPE-4 TYPE-5 SEWER SERVICE FOOTING FOOTING FOOTING FOOTING FOOTING CONNECTIONS DRAIN DRAIN DRAIN DRAIN DRAIN CONNECTIONS CONNECTIONS CONNECTIONS CONNECTIONS CONNECTIONS 10% 30% 20% 35% 5% 26,500 2,650 7,950 5,300 9,275 1,325 Initial Inspection Cost I$ 50.00 I$ 132,500 I$ 397,500 1$ 266,000I$ 463,750 $ 66,250 I I$ 1,325,000I Removal Cost Average Unit Cost $ - $ - $ 1,000 $ 4,000 $ 5,000 Total Cost $ - $ - $ 5,300,000 $ 37,100,000 $ 6,625,000 I$ 49,025,000 I Verification Inspection Cost $ 40.00 I I I$ 212,000I$ 371,000 I$ 53,000 I I$ 636,000 TOTAL $ 132,500 $ 397,500 $ 5,777,000 $ 37,934,750 $ 6,744,250 $ 50,986,000 Total Cost $ 50,986,000 Connections 26,500 Average Cost $ 1,924 Waterloo Sanitary Sewer C Ik'ctiOP Sv'lcwi 22 11 Indianola, Iowa Footing Drain Removal Program Indianola adopted a policy to abate problems associated with I/I: 1) City to Perform study 2) Public Sewers & Manholes w/I/I to be repaired using Sewer Revenue Fees 3) Private sources of I/I are Property Owners responsibility and are to be Repaired or Removed A) Property Owners need to grant access for I/I testing& Inspection A-1) Letter notifying Owner w/30 days to respond—If access is denied,Surcharge of$30.00 per month is added to Sewer Fee. If denial extends past 90 days, Surcharge increases to $50.00 per month After Inspection: B) Upon written notification from City—Property Owner has 90 days to perform the repairs or retain a contractor to make the repairs B-1) If they do the above within 90 days they qualify for one of the following: 1) 25% reimbursement up to $500.00 OR 2) 5%-7-year loan for the costs up to a maximum of$2,000—costs to be added to Sewer Bill B-2) If Property Owner opts not to repair the I/I after the 90 days—a Surcharge is added to the Sewer Bill-$30.00 per month for the first year. After one year,the Surcharge increases to$50.00 per month until the repairs are made Inspection by City Staff both prior to and after repairs is required to qualify for reimbursement loan. Bills for the work need to be submitted for the loan reimbursement. If work is done by the property owner—City may reimburse up to 50%of the materials cost up to $250.00 SUMP PUMP Upon Written Notification—Property Owner has 30 days to disconnect 1) $30.00 per month Surcharge applies after 30 days for one year. Increases to $50.00 per month after the first year until repairs are made. 2) No Financing Options for Footing Drains UNDUE HARDSHIPS They appear to be handled on a case-by-case basis BUT the$30.00 per month surcharge is a minimum. The increase to $50.00 per month can be waived, but the $30.00 appears to remain in effect. Columbia Heights, Minnesota Footing Drain Program Prohibited Discharges: - No clear water from any Roof,Surface, Groundwater, Sump Pump, Footing Tile, Swimming Pool, or other They shall have a permanently installed discharge line which shall not at any time discharge water to the Sanitary Sewer. Any connections of a yard drain, roof source, tile, or swimming pool now connected or discharging to the sanitary sewer system shall be disconnected or removed. Sump Pumps shall not be connected to the Sanitary Sewer. Prior to the closing of the sale of a dwelling,the seller must request that the Sump Pumps and Tiles be inspected by the City,visually &/or by smoking to ensure they are not connected to the sanitary sewer system. If the City determines that the Sump Pump or Drain Tile is illegally connected to the Sanitary Sewer System,the situation must be corrected before the unit is considered in Compliance to be sold. Disconnections must be made Permanent and Complete&meet all applicable Codes& Ordinances. Inspections—Property Owners must allow Inspections. In lieu of an Inspection,the Property Owner may furnish a Certificate from a Licensed Plumber Certifying the property is in Compliance. IF Property Owner refuses to allow for inspection or does not provide a Certificate of Compliance—within 21 days from notification—they are subject to a Surcharge-$100.00 per month until property is shown to be in compliance. All new construction is to be inspected and shall have Sump Pumps piped to outside of the structure. Inspection needs to be done and Certificate issued prior to occupancy. Surcharge is set at$100.00 per month for all connections not in compliance or refusing to allow for an inspection. Incentives—Reimbursement & Fees related to the program are to be set by Resolution? Penalties—Any person found to be in violation shall be notified in writing by the City—stating the nature of the violations and establishing a schedule for Compliance. IF Property owner fails to correct the situation—City may correct it and collect costs and attorney fees from Property Owner or may certify Costs as a Special Assessment against the Property. They include a provision which allows sump pumps to discharge to the sanitary sewer in the winter months(Nov 1—Mar 30) under special conditions. They go so far as to "require" this when discharge creates an icy condition on the streets. DISCLAIMER—City does not guarantee or imply that areas will be free from flooding or flood damages caused by I/I This article shall not create liability for any flood damages. >, as 0 R O '� vri N ao m i 7 N - sn C i• u" L j 0 p, N v o_ O 0 u "0 • O N r Ca "" L FC Cr O rh O m 0 69 69 69 6A W N d M A ' yh p . N 0c 'n a a cn sn� V i... 7 aaa aaa y N C• u u £ O d e , L C o :9 0. EA 64 69 49 _T adR O Q' 7 N N O 7 0 Q l" 0 C 0 0 0 O o0 00 + a+ aJ y ._ G Fr Ca0 64 49 69 49 64 �'' N O acn N N >., 7 N N N d 00 00 00 00 "a 6•4 69 69 69 V a R o 0 0 0 R y V 6 z 0 V O u4 7 d 7 O •- o V 4J E : O ""~ Q V ,4 C al O o 0 o Co cn V _ N O O a IC A y 7 O O O a uL 7 M c"; 0 `I CO 'y a. o ° a E m co ce ee pp e O E. h - CT0. 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