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Exh 8CAGENDA ITEM#8C SEPTEMBER 24, 2001 CITY OF ATLANTIC BEACH CITY COMMISSION MEETING STAFF REPORT AGENDA ITEM: Professional Engineering Sernces for Replacement of Force Mam from Lift Station B SUBMITTED BY: Donna Kaluzmak, Utility Director DATE: September 14, 2001 BACKGROUND: A high priority recommendation m the Sewer Master Plan was replacement ofthe existing 10-inch force main from Lift Station B (425 11°i Street) to the Wastewater Treatment Plant No 1 (1100 Sandpiper Lane) with a 12-inch force main. This will help to reduce surcharging of the sanitary sewer system during rainfall events We requested Aikenhead & Odom, one of the engineering firms recently awarded a continuing contract, to provide us with a cost proposal for engineering of this project The scope of sernces includes a prelurunary investigation of existing conditions, investigation of alternative construction methods, design drawings and specifications, and permitting. The cost to provide the above services is not to exceed $19,500 This fee represents IS% of the estunated construction cost, an average range for a smaller project. Note that under our contmumg contract, the Crty will only be billed for actual hours and expenses, not as a lump sum BUDGET: A total of $50,000 was budgeted for engineering for projects recommended in the Sewer Master Plan in the Sewer Utility Fund, account number 410-4101-535-6300 RECOMMENDATION: Authorize Aikenhead & Odom to perform the engineering sernces for the Replacement of Force Mam from Lift Station B, in an amount not to exceed $19,500 ATTACHMENTS: 1 Scope of Work (including cost proposal) from Ailcenhead & Odom dated September 14, 2001 REVIEWED BY CITY MANAGER: ~.-,~ AGENDA ITEM #8C SEPTEMBER 24, 2001 CITY OF ATLANTIC BEACH CONTINUING SERVICES PROJECT SCOPE OF WORK for DESIGN and PERMITTING LIFT STATION "B" FORCE MAIN UPGRADE Aikenhead & Odom September 14, 2001 Atkenhead & Odom (A&O) will provide Engineering Design Sernces (Design) to the CrtyofAtlantic Beach (City) for a Continuing Sernces Project (Project) involving design of a new 12" force main to replace an existing 10" force lnattl serving the existing samtary sewage Lift Statton `B" Replacemettt Destgn will be from the extsting Ltft Station "B", located at 11"' Street and the Selva Lagoon, to a proposed new master pumping station site on Dormers Road neaz the extsting Atlantic Beach Wastewater Treatment Facility A&O has provided substantial prehmwary investigations into possible alternatives due to severe constraints within an existing "htmted-access easement" in which the extsting force main ties From our preliminary investigations, A&O has determttted an apparent best alternative for Destgn, and ulttmate construction, which includes `~tpe-bursting", a relatively new but proven technology It is currently anticipated Design will be for an new 12" force main leading up to and away from both ends of the easement, which construction would be completed pazallel to the existing 10" force main while rt remains in sernce Access pits would be constructed on both ends of the easement over the existing force main and the two temporary ends of the new force main The pipe-bursting operatton would be then accomplished within the easement, and connection made to the two temporary ends of the new force main. This phase of the construction would take place between mtdmght and 6 AM to mmimt~P samtary flows, which would be "bypassed" by pumper trucks. The above preliminary analys>s will allow the Ctty to avoid surveying a ma~onty of the extsting "hmtted-access easement" (approximately 750 LF with numerous existing fences and other encroachments), except at both ends. This will also ultinlately avoid having to enter, work within, and replace encroachments within a majonty of this easement during construction. Savings from this are anttctpated to be significant. A&O will coordinate with Ctty of Atlantic Beach to obtain available records on the existing facilities in the easement and the nght-of--ways along flits route pnor to ordering surveyor "soft-dtg"services A&O wt71 coordinate with the City's surveyor to assure all necessary information >s obtained with maxtmum efficiency A&O will provide Destgn, and submit for permtts as necessary, based on the above-outlined analysts Atlantic Beach, Ltft Stat,on "B" Force Ma,n Upgrade, Scope of Serv,ces Page 1 oft AGENDA ITEM #8C SEPTEMBER 24, 2001 On the base of the above, A&O will accomphsh prehmulaiy investigations, Design, and permitting effort under our Continuing Services Agreement fora "Not-To-Exceed" (NTE) figure of $19,500 This Scope, and associated NTE fee proposal, >s based on the Crty obtauung all necessary surveying and "soft-dig" services under their existing continuing sernces agreement for surveying These survey and "soft-dig" sernces would be able to remain outside of the existing "hmited-access easement", except at ends where information may be necessary for access pits. It is possible no information within the easement will be necessary at the east end of the easement, depending on disclosure ofmore definitive records to be studied during Design F~\PROJECTS\Pubbc\Atlaino-Bch\ConMUmg Servs\Fee-Inv-Propoml\Cotrcls-Nnc-Auth\LS-BScope.uk wpd Atlantic Beach, Lift Station "B" Force Mam Upgrade, Scope of Services Page 2 of 2