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on the landfill where the exceedance occurs will be geographically located and noted. The <br />operator will comply with all weather stipulations as described in Rule 4642, Sections 6.1.1.3 <br />If emissions are detected above 1000 ppmv, the County will investigate possible mitigation <br />procedures. These procedures may include placing clay, grout, or bentonite slurry in apparent <br />holes or cracks in the clay barrier, placing an additional clay barrier or soil over the specified <br />area, or increasing vacuum on wells in the vicinity of the emissions to draw landfill gas away <br />from the surface and to the gas collection system. <br />Schedule <br />Testing is scheduled to begin in February of 2002. <br />In accordance with Rule 4642, the County will perform surface emissions testing semi-annually. <br />However, if two consecutive tests show results of less than 1000 ppmv of combustible gas, the <br />County will then test surface emissions on an annual basis unless an emissions reading of greater <br />than 1000 ppmv of combustible gas is found. If an emissions greater than 1000 ppmv is found, <br />the County will resume surface emissions testing on a semi-annual basis. <br />If two consecutive tests result in emissions recorded at levels greater than the 1000 ppmv, the <br />County will prepare and implement an emission control plan and continue semi-annual <br />monitoring (See Figure 3). <br />The Air Pollution Control District will be notified of each test 30 days in advance, and the test <br />results will be submitted to the District within 60 days of completion of testing. <br />Corral Hollow Landfill Emissions Testing <br />Rev December 21, 2001 <br />Department of Public Works/Solid Waste <br />San Joaquin County <br />