SR 06:144 - Laserfiche WebLink

items of work (Phase 1 only with no bridges), was $700,000. The low bid of $847,256.24 was received from Hanford Applied Restoration & Conservation of Sonoma, California. All bid documents were found to be in order. Past work performed by this contractor was verified to be satisfactory. At the March 21, 2006, City Council meeting, staff was directed to conduct a neighborhood meeting to specifically address drainage concerns from property owners downstream of the Kottinger Creek Restoration project. On April 24th, a meeting was conducted at City Hall and was attended by approximately ten local residents. A presentation was conducted by Far West Restoration Engineering (the project design consultant) which focused on an overview of the project, and the results of the hydraulic model study performed on the creek. The results of the model study show that while the stream flow through the park will be changed due the geometric changes in the channel width, the project will not adversely impact adjacent or upstream/downstream property owners. Previous concerns stem from flooding that occurred in 1986. Flows within the creek exceeded culvert capacities and ran into the street causing flooding downstream. Since that time, residential development upstream has installed detention basins that capture stormwater runoff, store the flows, and slowly release the water over an extended period of time. Based on several previous studies, the anticipated runoff in a 100 year storm has been reduced approximately 80 percent from 900 cubic feet per second without detention basins to 124 cubic feet per second with detention basins. Based on the reduced flows, the existing culvert capacities downstream exceed any anticipated flows from a major storm event. The City has applied for a grant from the State of California. Based on recent correspondence, recommendations for funding will not be known until June. However, it is unlikely that this project will receive funding since the State has started to conduct project site visits for those projects on their short list for consideration. Since we have not been notified that we have made the short list, it is unlikely that we will receive funding. Staff has contacted the State for clarification of the City of Pleasanton's status for grant funding. It is hoped that we will have a defmitive answer by the City Council meeting date. Staff is recommending awarding the contract for the base bid because it is very close to being within budget, and accomplishes most of the project's intent. If the City Council wishes to complete almost all of the creek grading work and landscaping, they should choose Option 2. If the Council wishes to complete all of the grading and landscaping and the lower area bridge, they should choose Option 3; Option 4 adds the upper bridge which is of minimal value to the project goals. BUDGET In the bid documents, provisions for additive/deductive items of work were included to allow the City Council to consider different levels of funding for the project. The basis of award SR 06:144 Page 2 of6