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Wagstaff and Associates Contract Exhibit "A" <br /> City of Redwood City Bair Island Road Development EtR <br /> October 25, 2001 Page 11-17 <br /> <br />r addition, the alternatives analysis by WRA will include more detailed comparisons of two more <br />r detailed alternatives with identification of any specific changes in impacts and mitigations. <br /> <br />r 4. Meetings. Wetlands Research Associates will attend two project meetings and two <br /> public hearings to discuss the EIR methodologies and findings regarding wetland and <br /> biological issues. If attendance at more meetings or public hearings is requested, they will be <br /> attended on a time-and-expenses basis at standard WRA hourly rates. <br /> <br /> F. Hydrology and Water Quality (Clearwater Hydrology) <br /> <br />r The proposed project raises the following hydrological and wetland issues of concern: <br /> <br /> · Project effects on stormwater peak flow rates and volumes versus existing capacity of <br /> the City's existing storm drain pumping station near the intersection of Bait Island Road <br /> and Bayshore Road, adjacent to the bend in Redwood Creek; <br /> <br /> · Project impacts on flooding during the 100-year high tide or coincident high tide and flood <br /> events; <br /> <br /> · Project-related water quality impacts to the tidal reach of Redwood Creek, due to the <br /> proposed site construction and dredging and fill operations at the marina sites, as well as <br /> the increased density of the proposed land uses; and <br /> <br /> · Potential water quality impacts related to siltation and maintenance dredging of marinas, <br /> and to marina/harbor water circulation patterns, residence times and the quality of <br /> stormwater inflows. <br /> <br /> Bill Vandivere, P.E., Principal of Clearwater Hydrology, will evaluate the above issues <br /> according to the work program described below. The level of analytical detail described below <br /> will be expended on the proposed project only. For the EIR alternatives section, a less <br /> detailed assessment will be conducted based on a comparison of impacts and mitigations <br /> relative to the proposed project. <br /> <br /> 1. Setting. A site inspection will be conducted, and existing drainage and land use <br /> conditions will be documented. Project grading and drainage plans will be obtained, if <br /> available, prior to the field inspection to assist in determining the focus of site inspection. In <br /> addition, Clearwater Hydrology will obtain and review any hydraulic computations and design <br /> information prepared by the applicant for water circulation features in the affected portions of <br /> the Peninsula and Pete's Harbor marinas, as well as any specifications or criteria developed <br /> for the proposed dredging operations. <br /> <br /> Clearwater Hydrology will contact the City's Engineering Division and the San Mateo County <br /> Flood Control District to identify and collect information regarding the hydraulic and tidal <br /> estuarial characteristics of Redwood Creek and its tidal slough system. City staff have <br /> already pledged to provide drainage calculations and design specifications for the local <br /> pumping station and a hydraulic study for Redwood Creek that was prepared for the City by <br /> <br /> WP51t62.21MISCIO013-2. EXA <br /> <br /> <br />