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San Joaquin County Environmental Checklist Landfill operators establish vegetation and construct drainage berms or benches on surfaces as they near final elevation. This helps direct stormwater away from refuse fill areas and toward the existing stormwater facilities. BMPs are also implemented at the landfill as required under the NPDES permit. Each year the County submits an Annual Stormwater Protection Report to the Central Valley Water Board. Because the proposed project does not entail a lateral(horizontal)expansion of the existing landfill footprint and no new facilities or operational changes are proposed, it is anticipated that continued operation of the landfill would not require or result in the construction of new stormwater drainage facilities or the expansion of existing facilities. The County will prepare a revised Closure Plan to address storm drainage under the new slope,conditions.Although the total quantity of rainwater received will not change as a result of the proposed project (the footprint of the landfill will not be increased),the speed of runoff following closure will be greater than that under present conditions because the slopes at closure will be steeper. The revised Closure Plan will evaluate this characteristic, and incorporate any design changes needed to accommodate the faster flow rate. In the meantime,continued implementation of the existing drainage and erosion control and leachate control measures described in Chapter 1,Project Description,would ensure that potential impacts are reduced to less-than- significant levels. No additional mitigation is necessary. d. Water is used at the landfill facility is for dust control and domestic-type(e.g., potable)uses. The proposed project is not anticipated to result in a substantial increase in demand for water and needed infrastructure, relative to existing conditions, because no new residences or expansions of existing businesses are proposed. Irrigation systems will need to be installed for screening trees that will be planted on the perimeter of the landfill disposal area. However,this added need for water will be offset by the reduction of water used for dust control,thus equalizing the demand for onsite water use. Potential impacts are considered less than significant. No mitigation is necessary. e. Because no new facilities or operational changes are proposed,it is anticipated that project operations would not result in significantly increased wastewater discharge compared to existing conditions. Consequently,the project would have no impact. f,g. Because no new facilities are proposed, it is anticipated that project operations would not result in a substantial increase in solid waste,nor in increased demand for solid waste disposal at the landfill facility. Potential impacts are considered less than significant. No mitigation is necessary. Notice of Preparation for the June 2006 North County Recycling Center and Sanitary Landfill 2_75 AS 06307.06Permit Revision