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exceeded during one quarter out of the year, no increasing trends were noted. <br /> Comparison of the upgradient (ASW-1)to downgradient(ASW-2) surface water samples <br /> indicates generally similar concentrations and that the landfill operations are not <br /> impacting surface water quality. <br /> Leachate Monitoring <br /> According to the Operations Manager, no leachate was taken off site during the 2012 <br /> monitoring year. The leachate collection system, which collects leachate from the north <br /> face of the landfill, has been operational since November 1996. WQPS (concentration <br /> limits) are not required for leachate because it is collected and removed for disposal, <br /> rather than discharged. According to the Operations Manager, the leachate monitoring <br /> and collection system operated effectively during the 2012 monitoring year. <br /> Leachate samples were collected on a monthly basis and analyzed in the field for pH, <br /> specific conductance, and temperature. In addition to monthly monitoring, leachate is <br /> sampled annually during the fourth quarter monitoring period for the parameters listed in <br /> Table 2-1. The annual leachate sample results indicate that one new COC was identified <br /> (2-methylphenol [o-cresol]). Verification retesting sampling will be conducted during <br /> the second quarter 2013. <br /> 5.0 REFERENCES <br /> California Regional Water Quality Control Board, Central Valley Region, 2003, "Order <br /> No. R5-2003-0049 Waste Discharge Requirements for Forward Inc. and Allied <br /> Waste Industries for Operations of Forward Landfill a Class II Facility Landfill, <br /> San Joaquin County". <br /> CH2M Hill. 2000. Fourth Quarter/Annual 1999 Monitoring Report,Austin Road <br /> Landfill. January. <br /> Geologic Associates. 2001. Low-Level VOC Detections in Monitoring Wells, Forward <br /> Sanitary Landfill, San Joaquin County, California, (RWQCB Case No. 2209). <br /> February. <br /> Herst Associates ("Herst"). 2013. Statistical Analysis of Fourth quarter 2012 <br /> Groundwater Sampling Results, Austin Road Landfill. January 2013. <br /> Herst Associates ("Herst"). 2013. Statistical Analysis of Fourth quarter 2012 <br /> Groundwater Sampling Results, Forward Landfill. January 2013. <br /> Herst Associates ("Herst"). 2012. 2012 Annual Corrective Action Evaluation Report, <br /> Austin Road Landfill. July 2012. <br /> c:\zoiz-0025\FA4Qti.aoc 17 Geo-Logic Associates <br />