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Surface Water Monitoring Site run-on and run-off control facilities are designed to effectively channel surface water to site stormwater/sedimentation ponds. According to the Operations Manager,there were no discharges to surface water during the reporting quarter. Samples were collected from surface water monitoring stations FSW-1 (downstream) and FSW-2 (upstream) on March 8, 2013 for the first quarter monitoring period. Table 2-7 summarizes the current analytical results of surface water samples collected at the Forward Unit. As shown on Table 2-7, no VOCs were detected in either sample. Analytical results for the surface water samples are similar, suggesting that landfill operations are not impacting surface water quality. 2.2 CONSTITUENTS OF CONCERN During the first quarter 2013 monitoring period, groundwater and surface water samples from the Forward Unit were analyzed for the five-year COCs listed in RWQCB Order No. R5-2003-0049 and are summarized in Tables 2-2 and 2-7. As shown in Tables 2-2 and 2-7, with the exception of one chlorinated herbicide (dicamba)that was measured at trace concentrations in both surface water samples, no organic COCs were detected in the groundwater and surface water samples. Since similar concentrations of dicamba were measured in the upstream and downstream samples, it is believed that the source of the herbicide is from agricultural activities upsteam of the landfill. Several inorganic COCs were detected in both up-gradient and down-gradient wells and surface water stations. The similarity in the concentrations in both up-gradient and down-gradient wells and surface water stations suggest that the inorganic COCs are naturally occurring. A comparison of inorganic COCs to Federal and State maximum contaminant levels (MCLs) for drinking water, indicate that the MCL for antimony (0.006 mg/L) was exceeded in all groundwater monitoring wells and up-gradient surface water station FSW-2, and the MCL for nickel (0.1 mg/L)was exceeded at groundwater monitoring wells MW-3 and MW-15. 2.3 SUMMARY Groundwater quality conditions beneath the Forward Unit during the first quarter 2013 monitoring period are generally similar to those observed in previous monitoring periods. During the first quarter 2013 monitoring period, non-statistical exceedances for VOCs were identified at well MW-2A and MW-10. However, trend analyses indicate that there were no statistically significant increasing temporal trends calculated for the VOCs detected in wells MW-2A and MW-10. For the routine inorganic monitoring parameters, CLs were exceeded for constituent concentrations in wells MW-2A, MW-13, MW-14, MW-15, and MW-23R. With the exception of nitrate-N concentrations in well MW-14 and sulfate concentrations in well MW-15, trend analyses indicate that there were no statistically significant increasing trends calculated for the CL exceedances during the current monitoring period. Previously submitted NRDs for these common inorganic C:\2013-0021\FA_1Q13.doc 7 Geo-Logic Associates