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HomeMy WebLinkAboutStaff Report 2.C 03/05/2012 Oyu Itewv#2 . C • ,S85a. • DATE: March 5, 2012 TO' Honorable'Mayotand Members of the City Council through.City Manager FROM::' Dan St. John Director of Public Works•& Utili SUBJECT: . Resolution Accepting Completion ofthe `C' Streeh'Pump Sta on Upgrade Project • RECOMMENDATION • Iris recommended that the CityCouncil adopt the attached Resolution accepting completion of the `C' Street;Pump Station Upgrade•Project. BACKGROUND The C' Street pump station is located on.the west bank of the Petaluma.River, near the intersection of First;and•OStreets(see attached location map). The project is located•in':the Theatre,District adjacent to thePetaluma River and City staff was sensitive to the environmental andbusiness concerns during the construction phase.of this very complex project. The station pumps wastewater from the southwest;basin,ofthe community underneath the river to a gravity • sewer line, which flows to'the City's Pond Influent.Pump Station at Hopper' Street. From there, it is pumped=to the Ellis Creek:Water Recy,cling'Facility. The:original facility was built in 1969 and,ininor:improvements were constructed in 1985. The project was first designed in 2005, but was placed on hold awaiting construction financing. The Regional Water Quality Control Board 'mandated the;,project due to Sanitary sewer overflows (SSOs) in 2008: The project was.re- designed'in'2009/10 to meet updated design goals and to address-code changes for electrical, seismic, generator and structural requirements as well as•architectural changes and sidewalk improvements per 2009;Site Plan and:Architectural Review Committee approvals. • . • The•Project was funded from the Wastewater Enterprise CIP'account after revising priorities of other projects'withoutrequiring,bond financing: The project included:demolition, installation,of new mechanical equipment, electrical equipment and motor,control:systems, includmgfalaims and SupervisoryControl and Data Acquisition (SCADA) system, monorail beam,and,hoist, ventilation supply and-discharge fans, odor control • unit, and a standby generator. PG&E also,required the City to relocate and upgrade a PG&E transformer. Structural;,-mechanical,-and electrical'improvements were necessary to meet flow -capacity, reliability, safety, maintenance requirements andreducetbe likelihood of damage from flooding during-winter storms: These improvements:increased`the energy efficiency of the pump :station and',are expected to reduce maintenance costs! The projecralso incuded architectural Agenda Review: _ :City Attorney, Finance Director City=Manager • • improvements to complimenttheDowntown:Historic District.including aesthetically compatible horizontal siding and standing-seam metal roofing. Bids,were opened:on July 14, 2010. On:AugusC2, 2010, the City Council awarded-the construction.contract to Pacific Infrastructure Corporation.of Pleasanton, CA, in the'amount of $2,305;000. In recognition-of,the challenges tosuccessfully completing a `retrofit' type project in such a difficult location, the Council approved the project budget during the annual budget process, which included a change order contingency for_unforeseen conditions of 16.5%. Construction was successfully completed•.on December 15, 2011. DISCUSSION • Project design costs included Professional Services Agreements (RSA's)`with Dodson for the initial design at a cost of$275,000m 2005 and with Dodson/Psomas for final design at an additional cost of$300,4001 Project costs also included for construction management services with The Covello Group; $250,000 for engineering services during construction with Psomas; and:$89,100 for construction engineering with ArcSine Engineering. This project required,an;above average.expenditure>for professional support during construction due to the complexity of the design,the need to:address unforeseeable;conditions incurred during construction, the challengeofkeeping the system operating`during`construction and extensive coordination demands;ofthe-downtown businesses. In addition, the:SCADA controls needed to be,synced.up with the overall system controls for wastewater pumping city=wide. Miscellaneous project expenses.totaling approximately $32,500 included administration costs, legal fees, land easements',and'CIP overhead. The final construction.contract costis?$2,537,448.92, which includes change orders totaling $232,448:92;(10:1%). The approved Project Budget included a construction contingency for changeorders in,the'amount of$338,000 (16.5%).. This contingency was-necessary to cover unforeseen conditions of a project;involving a substantial retrofit,of an existing facility, adjacent to the Petaluma River and business district. Extra work:included electrical and concrete pad modifications due to PG&E changing the'transformer requirement`s'during,construction; electrical and mechanical modifications grading, drainage, and paving modificationsto conform to existing site conditions; extra work:to conform the existing sstructureto differing site conditions, extra work for by-pass pumping'system, cathodic protection to existing sewer force mains, unforeseen asbestos remediation,,soundwall installation to mitigate concerns expressed by the neighbor during:construction;;and curb,-gutter and sidewalk conforms. FINANCIAL IMPACTS The `C"Street<Pump Station Upgrade ;City,Project.Number C00500205, was approved in the Wastewater CIR with a;budget of$3,988;000. The remaining account balance for the project is approximately $107,800. At project closeout, all remaining funds will return to the Wastewater CIP to be used oh-friture projects. 2 Following the acceptance,of the project; the City Clerk„willfile a Notice of Completion=with.the Sonoma County Recorder-and the Finance;'Diyision will release the retention money ($253,743) to tlie.contractor witliin60 days: ATTACHMENTS 1. Resolution 2. Location Map • • 3 • • • Attachment1 • RESOLUTION:ACCEPTING COMPLETION:OF'THE • `C' STREETPUMP'STATION UPGRADE"PROJECT • WHEREAS, in accordance with Section 68 ofArticle,X of.the City.ofPetaluma Charter, Section 20162 of the California-Public Contract Code and other applicable laws,the City-of Petaluma;solicited bids for the `C' Street Pump$tation Upgrade Project ("Project"); and . WHEREAS, bids for the Project were opened on July 14, 2010 in accordance with California Public Contract Code Section 4104:5"and other-applicabledaws; and WHEREAS, the apparent•low bid for the Project was the-bid of Pacific Infrastructure Corporation (PIC) in the amount of$2,305,000; and • WHEREAS, by Resolution.No 2011-153 N.C.S..adopted<August 2, 2010, the City Council of the City of Petaluma found the bid of$2,305,000?,for the;Projectto be the lowest responsive bid and awarded.the;Project:to Pacific Infrastructure Corporation m the amount of $2,305;000 conditioned on PIC's.timely executing the Project contract:and submitting all required documents and authorized and directed the City Manager to sign;the Project contract on behalf of the City upon such timely submission and to execute on behalf of the City any amendments to the.Project contract that are necessary to+effectively complete the project and/or to realize the Project and/or cost benefits for the City; and • WHEREAS,the following change,orders(CO) affecting the-Project amount have been approved: CO No. 1: Electrical modifications dueto PG&E transformer requirements $17,701 CO,No 2: Electrical modifications to thermal air flow switches $ 2,220 CO No 3: Extra work for soundwall, modifications to watersystem, core sizes $12,322 CO No 4: Misc. electrical and.rriechanical modifications $ 5,917 CO No 5 Extra work-at wetwell to remove'ex. coatings and prepare walls $10,062.92 CO,No 6 Extra work at support beams,piping modifications at 6"pump $13,007 CO No..7: Extra work for roof demo;asbestos pipe removal, add.shut"off valve $10,541 CO No 8; Electrical:and'piping:modifications, extra work at;ex. concrete walls $14,903 CO No 9: Extra work at cathodic protection,,irrigation sleeves &dry well paint $18,475 CO No.10:Modifications to fence^and'entry platform;.extra work attanalog:scale $11,505 CO No.11:Extra work at by-pass pumps,discharge piping, tile coating,;,supports $18,857 CO No:12:Structural modifications; extra+work at stair handrails-and sate $17,250 CONo.13:Modifications at electrical,pad per PG&E extra work at air-gap`tank $17,321 CO No.14:Paving;modifications $19,995 CO,No.15:Grading modifications•,to-conform to existing site conditions $14;806 CO;No.16;!Site;drainage'improvements $19,039 CO No:17.'Extra site workiincluding curb, gutter and sidewalk conforms $ 8,527 Total Change'Orders`. $232,448.92; and WHEREAS, the final,contract amount as amended including'all change orders is $2,537;448;92; and 4 • • WHEREAS, City staff has inspected the.Project'and determined,that.it has been completed.in accordance with"the contract requirements subject to the Contractor's continuing warranty:and other;obligations pursuant tothe°contract; and WHEREAS, based on theforegoing, staff recommends acceptance of the Projection behalf ofthe City; • NOW, THEREFORE, BE IT:RESOLVED by the City Council.o.fthe City of Petaluma as'follows: L The contract entitled `C''StreetPump Station UpgradCity Project Number C00500205 with a final contract,amount of$2,537;448,92, is accepted as complete subject to the Contractor's continuing warranty and other obligations pursuant to the • contract. • 2. The City Clerk/Recording Secretary is.hereby authorized;and;directed to file a Notice of Completion concerning the'Project with theSonoma County Clerk's Office within ten (105 days-of the date of this,Reso lution, 3. Staff is hereby authormed.and:directed to release all undisputed retention not subject to pending change orders within sixty(60) days of the?dater of this Resolution and in accordance.with.the terms of the Project contract, California Public Contract Code Section 7107`and.applicable.law. • 5 • Attachment l2 ".C" STREET P-LIMP' STATION 'UPGRADE !PROJECT . . . PROJECT:NO. CO0500205 • LOCATION MAP - / ■ . I. . ---...." ill '-• ) //- r ‘it,z7. C i •A . ,iii • ,..„---t-------c re,/ •„, , ■ ThN, ,,s&-, i • ,7 \ -ki \•„ .. - „, ./ --,5 ' ( . 1‘• _ •i -----N T (r•L------)-----t< --. \ , 4 N --. A --.A.411,41 4 NN • . .640// \\•' • \ k.k/ \ / __.....„„cr.------ - Nyfr // -. :-,_,,-4$,1/4,90. V.,--•\ i.\\ \ / ------2c ,s. \ .. _\ .?„. -• ( \. 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