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C I T Y O F S A N L E A N D R O <br /> SAN LEANDRO GENERAL PLAN UPDATE AND HR <br /> E X H I B I T A: S C O P E O F WORK AND COSTS <br /> expansive soils, and subsidence. Potential seismic impacts, including ground <br /> shaking, surface rupture, liquefaction, and landslides will be described. <br /> Additionally, potential impacts related to geotechnical soil properties, such as <br /> erosion, expansive soils,and subsidence will be described. The Planning Center <br /> DC&E's senior geologist, with 30 years of experience,will review the draft General <br /> Plan policies pertaining to geology, soils, and seismicity, and suggest revisions to <br /> these policies or new policies, if necessary, in order to mitigate potential <br /> geotechnical impacts. <br /> h. Hazardous Materials <br /> The Planning Center I DC&E will prepare the "Setting" section of the EIR on <br /> Hazardous Materials, relying on the data collected and presented in Task 4. The <br /> Planning Center I DC&E will evaluate potential impacts associated with the use of <br /> hazardous materials during construction and land use operations. Potential impacts <br /> associated with development in areas with known or potential subsurface <br /> contamination and associated with aviation hazards,wildland fires, and emergency <br /> response and evacuation procedures will also be discussed. Potential public health <br /> and safety concerns in the city also may include demolition or renovation of <br /> buildings containing hazardous materials, and the proper management of <br /> hazardous materials during construction and land use operations. litigation <br /> measures will be described as appropriate. <br /> i. Hydrology and Water Quality <br /> The Planning Center I DC&E will utilize the existing conditions information <br /> collected in Task 4 to complete the "Setting" section of the Hydrology and Water <br /> Quality chapter. They will then assess impacts and identify mitigation measures. <br /> Development under the General Plan Update may change impervious surface areas <br /> and alter drainage patterns. Based on a review of available information, it is <br /> anticipated that impacts relating to hydrology and water quality may include an <br /> increase in stormwater runoff volume and resultant degradation of water quality <br /> unless appropriate mitigation measures are implemented. This potential impact will <br /> be described qualitatively. Potential impacts associated with the discharge of urban <br /> pollutants (petroleum hydrocarbons and heavy metals associated with automobile <br /> use) will also be described. Regulations and policies to reduce storm water <br /> pollution during the construction and operational phases of future projects will be <br /> described in detail. <br /> This scope assumes that the City will provide maps of the current storm drain <br /> system and identify any constraints associated with future development within the <br /> General Plan area. <br /> THE PLANNING CENTER I DC&E 38 <br /> MARCH 3.2014 <br />