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SOC Nursery Products NOEC January 30,2002 Page 3 of 5 materials to the site and vehicles removing the composting product from the site; and hours for outdoor equipment operation; etc. (see the Composting Facility Outline Web Link below). Traffic and Related Transportation System Impacts Traffic volumes for construction activities and the project's operational vehicle throughput should be projected for at least the first five years of the project with a projection of the estimated growth rate over the life of the project. A traffic study may be necessary to determine whether the existing and planned infrastructure can handle the projected vehicular movement, and whether improvements may be necessary to accommodate increased traffic; including the repair and maintenance on existing roads, additional lighting, turn lanes, and pedestrian walk- ways; as well as cumulative impacts on the circulation within the SOC vicinity (i.e. ingress and egress). Air Quality Local and regional impacts on air quality from direct and indirect source emissions both for facility operations and equipment and vehicles accessing the facility should be analyzed in relative detail, including the potential impact on local and regional air quality management plans. If the facility is located in a 'non-attainment' air basin,cumulative impacts affecting the projected attainment dates may be significant. Mitigation measures, which will be employed to address impacts for the facility, should be incorporated into the ED with a description of the 'attainment' plan for the air basin(s) quality. The local Air Pollution Control District should be contacted regarding air pollution discharge permits, which may be required to ensure compliance with ambient air quality standards. Odor from composting of putrescible feedstock(s) may create potentially significant odor problems. If the proposal is for open aerated static pile or windrow composting, there could substantial odor problems from putrescible wastes. If these materials are allowed to be windrowed for composting, additional measures must be taken to mitigate this potential for odor generation. Dust particulate generation and its control should also be thoroughly described in the ED. The distance to the nearest residential and/or commercial receptors downwind should be identified in the ED. Surface Drainage The ED should include a drainage plan, which identifies the composting facility's proposed operating design for surface drainage/runoff and collection. The plan should identify surface runoff,creeks, rivers and/or diversion channels in areas adjacent to the project area, and any associated impacts. Indicate the location and permeability of any proposed diversion berm(s), which redirect flow away from/around the proposed facility and any drainage basins to keep drainage on-site. Will the proposed facilities be able to handle a 100-year, 24-hour storm event? IWMB staff recommends that the Regional Water Quality Control Board (RWQCB)be contacted to determine if a National Pollution Discharge Elimination Systems (NPDES) permit is required for the facilities.