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Identify and specify the use of erosion and sediment control BMPs,means of waste disposal, implementation <br /> of approved local plans,non-stormwater management controls,permanent postconstruction BMPs,and <br /> inspection and maintenance responsibilities; <br /> Specify the pollutants that are likely to be used during construction that could be present in stormwater <br /> drainage and non-stormwater discharges; <br /> Specify BMP inspection protocols to ensure that the BMPs are effective and ensure that the monitoring is <br /> conducted if nonvisible pollutants are inadvertently discharged into stormwater. <br /> Identify construction techniques that will reduce the potential for runoff; <br /> Identify the erosion and sedimentation control measures to be implemented; <br /> _ • Specify spill prevention and contingency measures; <br /> Identify the types of materials used for equipment operation; <br /> Identify measures to prevent or clean up spills of hazardous materials used for equipment operation and <br /> hazardous waste; <br /> Identify emergency procedures for responding to spills; <br /> Identify BMPs that shall be used in all subsequent site-development activities; <br /> Identify personnel training requirements and procedures that will be used to ensure that workers are aware of <br /> permit requirements and proper installation and performance inspection methods for specified BMPs; <br /> ` • Identify the appropriate personnel responsible for supervisory duties related to implementation of the SWPPP; <br /> and <br /> " Require all construction contractors to retain a copy of the approved SWPPP on the construction site. <br /> Implementation of the above mitigation measure would reduce potential temporary construction-related water <br /> quality effects to a less-than-significant level. <br /> IMPACT Water Quality—Long-Term Water Quality Effects of Urban Runoff. The proposed project would convert <br /> 4.8-2 agricultural lands to residential and commercial uses and thereby change the amount, timing, and content of <br /> potential waste discharges in stormwater runoff to Mountain House Creek and Old River. However, the <br /> combination of nonstructural and structural BMPs proposed for the project stormwater drainage system <br /> would reduce the overall amount of potential contaminant discharges compared to existing conditions.A <br /> less-than-significant impact would occur. <br /> The proposed development would increase the amount of impervious surfaces(e.g.,buildings,paved roadways, <br /> and parking surfaces)in the project site,which would increase the total volume and peak discharge rate of <br /> stormwater runoff generated on the project site.The land use in the project site is predominantly agriculture, and <br /> the proposed land use changes would result in changes in the water quality of stormwater runoff.No water quality <br /> monitoring data exist from the local drainage system; however, constituent loading was estimated as described <br /> above and with results shown in Table 4.8-5. Irrigation and stormwater runoff from agricultural lands can contain <br /> a variety of constituents, such as sediment,nutrients (nitrogen and phosphorus),organic matter,pesticides,and <br /> metals in relatively high concentrations. Some of these constituents are naturally present in the soil particles <br /> which get transported off-site in the suspended sediment.In addition, agricultural runoff, including in the project <br /> College Park at Mountain House Specific Plan III Draft EIR EDAW <br /> San Joaquin County 4.8-15 Water Quality <br />