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HomeMy WebLinkAbout10B - Lift Station Standardizat DATE: AGENDA #: PREPARED BY: REVIEWED BY: AGENDA ITEM: DISCUSSION: CITY COUNCIL AGENDA REPORT April 7, 2003 lOB Bud Osmundson, Director of Public Works Frank Boyles, City Manager CONSIDER APPROVAL OF A RESOLUTION APPROVING A STANDARDIZATION POLICY FOR LIFT STATION CONSTRUCTION AND REHABILITATION AND INCORPORATING THIS POLICY INTO THE PUBLIC WORKS DESIGN MANUAL. The City's sanitary sewer collection system consists of almost 100 miles of pipe and 32 lift stations. The City sanitary sewer collection system flows into the Metropolitan Council Environmental Services (MCES) interceptor pipe, which flows by gravity to the Blue Lake Wastewater Treatment Plant in Shakopee. The piping system consists of gravity flow pipe and force main piping from the lift stations. Basically, a lift station is an industry accepted name for a pumping station, which "lifts", or pumps, sewage from a lower elevation through a force main, up to a gravity flow pipe. The number of lift stations in Prior Lake is unusual for most cities and is due to development around the lakes and the fact that the sewer system was installed after many of the homes around the lake were already constructed. The lift stations are very important in performing one of the main duties of the City; that is in protecting the health, safety and welfare of its residents. In the past year staff has initiated an audit of our lift stations to assess the status and inventory the components of each of the lift stations. Through this process staff has discovered that most of the older stations had many different parts and components, most of which are not interchangeable in the event a repair is necessary. When a lift station fails or is at risk of failing, it is imperative, for health purposes, to be able to make the lift station functional as quickly as possible. To maximize the ability to make timely repairs, the City needs to standardize the design of lift stations, which will also minimize the necessary inventory of component parts. Staff recommends the City Council authorize a lift station standardization policy. The policy will deal with repairs, reconstruction or rehabilitation, and the new installation or construction of lift stations. The purpose of this item is request that the City Council consider the adoption of a Standardization Policy for Lift Station Construction and Maintepance Center x:\osm~~Mcl~,SJialjctI?~oLa~,oMinnesota 55372 / Ph. (952) 440-9675 / Fax (952) 440-9678 AN EQUAL OPPORTUNITY EMPLOYER Rehabilitation and incorporating this Policy into the Public Works Design Manual. ISSUES: The City's 32 lift stations are a key component of the City's sanitary sewer system. They are installed in low areas, usually adjacent to a lake or wetland and are susceptible to backing up into homes when the power is lost or the pumping system fails. It is imperative that the lift stations be maintained by highly skilled personnel in a timely manner. The bulk of the City's lift stations were installed in the mid-1970's with the City sanitary sewer system as shown on the attached list. They have been installed both by City contract and by developers through new development infrastructure construction. Many of the older stations require significant rehabilitation, including the replacement of pumps, piping and other plumbing, and electrical components. The City has rehabilitated a number of stations over the past few years and will continue to rehabilitate others over the next number of years. In 2003, we are planning on rehabilitating 6 stations, which are outlined in the 2002 and 2003 Capital Improvement Plan. Another item on this City Council agenda requests authorization to undertake the rehabilitation of the six lift stations. Staff is requesting that the City Council approve a Standardization Policy for a number of reasons. Standardizing the design of lift stations will improve our overall sanitary sewer service to the public. The standardization would allow the City to purchase and keep on inventory many of the same components for lift station repairs. If a lift station requires significant rehabilitation that is required to go through a bidding process, the City would supply these components to a contractor after the bidding process for his installation through the contract. This ensures that the City receives good quality components that are compatible with our existing lift station component inventory. The City staff has been charged by both the State and the City Council with reviewing our traditional methods of doing business and recommending changes which save money for the City and its taxpayers. By standardizing our lift stations we can build a system which has interchangeable components, requires less inventory of components and parts on hand, and requires less training for our maintenance personnel. This means fewer pumps, starters, controllers, and other equipment on the shelf in the Maintenance Center, which equates to less cost to the public. The City is charged with protecting the health, safety, and welfare of the public. The standardization will improve the health, safety, and welfare of the public by ensuring that the lift stations are very similar and contain many of the same components. Standardization will simplify the operation and maintenance of the lift stations for the City's maintenance personnel. It will 2 X:\Osmundson\Sanitary Sewer System\Agenda standardization policy. DOC improve our maintenance personnel response time to a public safety threat when fixing a lift station failure. The safety of the public is improved by being able to fix the lift station faster, thereby preventing sanitary sewer back-ups into homes. The safety of the maintenance worker is improved by having similar components and designs of the lift stations, so decisions made when determining the cause of system failure can be made with more confidence. This also reduces the health risks inherent in sewer back-ups for our residents and prevents the destruction of private property. By adopting a Lift Station Standardization Policy and incorporating the policy into the Public Works Design Manual, the City will aid developers when they construct new lift stations. By standardizing the design, new lift stations will be constructed with components that are readily compatible or interchangeable with our existing system. With a Standardized Policy within the PW Design Manual, developers will construct lift stations that require less engineering review, have interchangeable components and are compatible with our existing system. FINANCIAL IMPACT: The Standardization Policy will save the City substantial funds in the long term because inventories of component parts can be minimized, and our staff will be able to recognize and correct lift station failures in a more timely manner. The funding for lift station rehabilitation projects comes from the Sanitary Sewer Operating budget (#49450). New lift station oversizing comes from the Utility Trunk Reserve Fund (#601). The engineering costs to assist Staff in putting together this policy came from the Sanitary Sewer Operating budget. ALTERNATIVES: There are two alternatives for the City Council to consider: 1. Approve a resolution Approving a Standardization Policy for Lift Station Construction and Rehabilitation and Incorporating this Policy into the Public Works Design Manual. 2. Deny this item for a specific reason and provide staff with direction. RECOMMENDED MOTION: Staff recommends adoption of Alternative No.1. ACTION REQUIRED: opt the Resolution stated above. REVIEWED BY: 3 X:IOsmWldsonlSanitary Sewer SystemlAgenda standardization policy. DOC RESOLUTION 03-XX A RESOLUTION APPROVING A STANDARDIZATION POLICY FOR LIFT STATION CONSTRUCTION AND REHABILITATION AND INCORPORATING THIS POLICY INTO THE PUBLIC WORKS DESIGN MANUAL MOTION BY: WHEREAS, WHEREAS, WHEREAS, WHEREAS WHEREAS SECOND BY: The City's sanitary sewer collection system consists of a number of miles of pipes and 32 lift stations, and the lift stations are a very key component of the sewer system and; One of the City's primary purposes is to protect the health, safety, and welfare of the City's residents and improving the ability of the City Staff to perform this function is always a City Council priority, and; The City Staff has identified that a Standardization Policy for the Construction and Rehabilitation of the City's Lift Stations will improve the health, safety, and welfare of the City's residents, and; This Standardization Policy will also improve the safety of the City's Maintenance Personnel, simplify the operation and maintenance of lift stations, reduce the spare parts inventory kept on hand by the City and; The implementation of this Standardization Policy will also save the City taxpayer's significant funds. NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF PRIOR LAKE, MINNESOTA that: 1. The recitals set forth above are incorporated herein. 2. The Standardization Policy for the Construction and Rehabilitation of Lift Stations is hereby adopted, and is to be incorporated into the Public Works Design Manual. Passed and adopted this 7th day of April 2003. YES NO Blomberg Blomberg Haugen Haugen LeMair LeMair Petersen Petersen Zieska Zieska {Seal} City Manager Maintepance Center x:\osra.1<G>1&~mMF5tStA&Jia.~~abk~MOO1esota 55372 / Ph. (952) 440-9675 / Fax (952) 440-9678 AN EQUAL OPPORTUNITY EMPLOYER LS Location GPM FM Pump Brand No HP Phase Volt Install No Size Size Name Pumos Date MWCC 250 6 Smith & Loveless 2 1978 1 Cardinal Ridge Storm 8.0 Fish Pt. Rd 2 Wilds 2670 Oaks Lane NW 3 Franklin Trall 180 6" Flyght 2 9.4 3 240 1970 16261 Franklin Trail SE 4 Green Heights 100 4" Hydromatic 2 3 I 230 1974 3772 Green Hghts Tr SW 5 Sycamore 36 2' Hydromatic Grinder 2 1.5 1 230 1974 3472 SvcamoreTrail SW 6 Public Access 60 2" Hydromatic Grinder 2 3 I 230 1974 16810 Dewitte Ave SW 7 Lakers 400 6" Hydromatic 2 10 3 230 1973 15665 Mitchell Circle 8 Condons 26 2" Hydromatic Grinder 1 1.5 1 230 1973 5120 Condons Street SE 9 Lakeside Apts. 60 2" Hydromatic Grinder I 3 1 230 1973 5286 Lemlev Circle SE 10 Breezy Point 6" Peabody-Bames 2 10 3 230 1974 15360 Breezv Pt ReI SE 11 Watzl's 6" Peabody-Bames 2 5 3 230 1974 15622 Red Oaks Road SE 12 Algrlns 30 2" Hydromatic Grinder 2 3 I 230 1974 5395 Candv Cove Tr SE 13 Candy Cove 30 2" Hydromatic Grinder 2 1.5 I 230 1974 5294 Candv Cove Tr SE . 14 Forsythe Ave 33 2" Peabody-Bames 1 2 I 230 1974 15420 FOrMhe Road SE 15 Bay Avenue 33 2" Hydromatic 1 1.5 I 230 1974 3684 Willow Bch St SW 16 Flint Trail 250 6" Peabody-Bames 2 7.5 3 230 1974 15265 Flint Rd SE 17 150th Street 70 3" Hydromatic I 3 I 230 1974 5784 I 50th St SE 18 Estate Ave 400 8" Fairbanks-Morse 2 20 3 240 1975 14856 Estates Ave SE 19 Boudins 200 6" Flyght 2 5 3 230 1975 14335 RutlZers Street NE . 20 Shady Beach 200 6" Flyght 2 9.4 3 230 1975 14351 ShadvBch Tr SE 21 Marlen Circle 40 2" Peabody-Bames I 0.5 I 230 1976 6230 Marlen Circle SE 22 Fairview 140 4" Flyght 2 2 I 230 1978 3014 Fairview Road SW 23 Sunset Trail 220 6" Flyght 2 5 3 230 1977 3201 Sunset Trail SW 24 Lime Avenue 520 8" Flyght 2 10 3 230 1977 16943 Lime Road SW 25 Butternut 420 8" Flyght 2 10 3 230 1977 16560 Northwood Rd NW 26 Northwood Rd 330 6" Flyght 2 18 3 230 1978 16040 Northwood Rd NW 27 Lords Street 165 4" Flyght 2 9.4 3 230 1978 4281 Lords Street NE 28 Fremont 260 6" Flyght 2 9.4 3 230 1978 15630 Fremont Ave NW 29 Quaker Trail 35 3" Myers 2 0.75 I 230 1979 4200 Ouaker Trail NE 30 South Shore Drive (Sorln!! Lake Townshio\ 31 Rustic Hills (Sorlo!! Lake Townshio) 32 SMSC (Sewer Meter) 33 Deerfield 17356 Deerfield Dr SE 34 Meadow View Orion Rd & 1541h St.