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longer be sampled. MW-3A: MW-3A was installed in June 2013. Concentrations of all the parameters analyzed were within established concentration limits where limits could be determined this semester (Table 1). No VOCs were detected during the second semester 2013 sampling event conducted on August 21, 2013. MW-4: Concentrations of all the parameters analyzed were within established concentration limits during the first semester except for Turbidity (Table 1). The trend analysis by Sanitas software indicates increasing trends for EC, Turbidity, TDS, and a decreasing trend for Chloride, Nitrate and Sulfate during the first semester 2013 sampling event. However, as presented below, it is likely the increasing trend in these parameters appears to be due to be the treatment ponds of the migrant labor camp and not the landfill. Four VOCs (Benzene, Toluene, Ethylbenzene, and Total Xylenes) were detected in MW-4 during the first semester 2013 sampling event conducted on February 1, 2013. Benzene, Toluene, Ethylbenzene, and Total Xylenes were also detected during the resampling event conducted on March 1, 2013. The consistent detection of VOCs in this well is unusual. The presence of VOCs in this well be securitized during the next routine monitoring event. These compounds indicate impact by petroleum fuels, rather than landfill gas. Well MW-4A replaced MW-4 in June 2013. MW-4A MW-4 will no longer be sampled.. MW-4A: MW-4A was installed in June 2013. Concentrations of all the parameters analyzed were within established concentration limits where limits could be determined this semester (Table 1). Two VOCs (PCE and Trans-1,2-Dichloroethene)were detected in MW-4A during the second semester 2013 sampling event conducted on August 21, 2013. MW-5: No general water quality parameter concentration limits where limits could be determined were exceeded in MW-5 during the first or second semester 2013 sampling events with the exception of Turbidity, which was exceeded during the first semester 2013 sampling event. A trace concentration of PCE and above trace concentration of CFC-12) were reported in MW-5 during the first and second semester 2013 sampling events. MW-5 was installed between the sewage treatment ponds from the migrant labor camp and the landfill 2 portion of the site to determine if the treatment ponds were contributing constituents to Harney Lane Sanitary Landfill 12 Department of Public Works/Solid Waste 2nd Semester and Annual 2013 Groundwater Monitoring Report County of San Joaquin—January 31,2014