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Home My WebLink About04-17-2012 c3 sewerline replacement monterey st to san luis drIA counci l agenba Repout Meeting Date April 17,201 2 ;Item NumberC 3 C I T Y O F S A N L U I S O B I S P O FROM : Jay D . Walter, Director of Public Work s Prepared By :Daniel Van Beveren, Senior Civil Enginee r SUBJECT :SEWERLINE REPLACEMENT — MONTEREY STREET TO SAN LUIS DRIVE , SPECIFICATION NO . 9096 7 RECOMMENDATION S 1.Approve plans and specifications for the Sewerline Replacement – Monterey Street to Sa n Luis Drive Project, Specification No . 90967 . 2.Approve the transfer of $407,000 from the Wastewater Collections master account to th e project's construction phase . 3.Authorize staff to advertise for bids and authorize the City Manager to award the contract i f the lowest responsible bid is within the Engineer's Estimate of $330,000 . DISCUSSIO N Replacement of wastewater collection pipes is part of an ongoing program to prioritize replacemen t of sewer infrastructure . This program has several objectives . Among them are : 1.Replace aging, deteriorated, deficient, or otherwise troublesome sewer infrastructur e 2.Reduce or eliminate periodic maintenance requirements and emergency repair s 3.Reduce infiltration and inflow of storm wate r 4.Ensure uninterrupted sewage flow without health hazard or effluent leakag e This project includes the replacement of the existing sewerline from the 101 northbound onramp a t Monterey Street to San Luis Drive near Corralitos Avenue (Attachment 1), and will accomplish th e program objectives for this segment of the City wastewater collection system . The proposed replacement of the sewerline is located within utility easements on private property . The properties are the Motel Inn, located at 2223 Monterey Street, and a private residence located a t 1984 San Luis Drive . The proposed work has been discussed in detail with the affected propert y owners . Concerns which were communicated by those property owners have been addressed as muc h as feasible with the project's specifications . An example of this is the restricted work hours betwee n 8 :00 am and 4 :30 pm, which have been implemented in consideration of the current residents on Sa n Luis Drive as well as the business operations of the adjacent Apple Farm Inn . A right-of-entry agreement has been obtained from the Motel Inn ownership and will allow for the contractor's use o f the property during construction . A portion of the existing pipeline crosses under San Luis Obispo Creek . In order to avoid impacts t o the creek, the project scope includes the replacement line to be installed significantly deeper than th e current pipeline . Modern construction techniques now include horizontal directional drilling (HDD), a trenchless installation method in which a pipeline can be installed with less disruption tha n conventional open trench methods . HDD is the specified method for the portion of the pipelin e C3-1 Sewerline Replacement —Monterey Street to San Luis Drive,Specification No .90967 Page 2 crossing the creek, and is particularly beneficial when working in a sensitive environment such a s San Luis Obispo Creek . Due to the need to cross under San Luis Obispo Creek, a Streambed Alteration Agreement will b e needed from the California Department of Fish and Game . The permit application has been submitte d and the agreement is anticipated to be received prior to the award of the construction contract . CONCURRENCE S The City's Community Development Director has approved a Mitigated Negative Declaration for th e project and a Notice of Determination was filed with the County on February 7, 2006 . The initial construction timeline was changed to accommodate higher priority wastewater replacement projects . Due to the time lapse between this approval as well as a revised scope from the original document, a n addendum to the Initial Study/Notice of Determination was issued by the Community Developmen t Department on February 9, 2012 . All mitigation measures required by the environmental documen t have been incorporated into the project specifications . One notable restriction contained in th e document is that the HDD portion of the project may only be conducted between the dates of Jul y 31 St and October 31 s t FISCAL IMPAC T This project is identified in the 2011-13 Financial Plan, Appendix B, pages 3-90 through 3-93 at a n estimated cost of $450,000 and is budgeted in the 2012-13 fiscal year . The Engineer's Estimate o f construction costs is $330,000 . Funds will be transferred via a Budget Amendment Request to th e project account from the Wastewater Collections Master Account at the time of contract award . The recommended action will allow the project be advertised at this time so that construction ma y occur within the date restrictions associated with the project . ATTACHMENT Sewerline Replacement - Monterey Street to San Luis Driv e Construction Cost s Construction Estimate :$330,00 0 Construction Contingencies : (20% due to unforseen permitting issues)$66,00 0 Total for Construction :$396,00 0 Printing :$1,00 0 Materials Testing and $10,00 0 Total Other Costs :$11,00 0 Total Cost :$407,00 0 Vicinity Map Sewerline Replacement —Monterey Street to San Luis Drive,Specification No .90967 Page 3 AVAILABLE FOR REVIEW IN THE COUNCIL OFFIC E Plans and Special Provisions : Sewerline Replacement – Monterey Street to San Luis Driv e t:\coundl agenda reports\2012\2012-04-17\sewerline replacement - monterey street to san luis drive (walter-vanbeveren)\ecar 90967 advertise .docx ATTACHMENT #1 LOOMIS OOMI S US 101 FREEWA Y ABBOTT MOTE L IN N APPL E GARFIELD FARM 200 '400 ' M 'i san Luis oBaspo SEWERLINE REPLACEMEN T MONTEREY STREET TO SAN LUIS DRIV E VICINITY MAP C3-4