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FORWARD LANDFILL 9999 S.Austin Road Manteca,CA 95336 (209)982-4298,Fax(209)982-1009 January 28,2011 JN: 2010-0013 Mr.Ross Atkinson Central Valley Regional Water Quality Control Board 11020 Sun Center Drive,Suite 200 Rancho Cordova, CA 95670-6114 SUBJECT: FOURTH QUARTER 2009 AND ANNUAL WATER QUALITY MONITORING REPORT FORWARD LANDFILL SAN JOAQUIN COUNTY,CALIFORNIA On behalf of Forward Incorporated(Forward),GeoLogic Associates(GLA)is pleased to submit the subject water quality monitoring report for the Forward Landfill in compliance with reporting requirements of the Regional Water Quality Control Board-Central Valley Region(RWQCB) Waste Discharge Requirements(WDRs)Order Number 115-2003-0049,which combined operations at the former Austin Road and Forward Landfills under a single permit. The combined landfills will be referred to as the Forward Landfill hereafter. The Forward Landfill is regulated by two monitoring programs including the RWQCB WDR Order No. RS-2003-0049; and the Department of Toxic Substances Control(DTSC)Post Closure Permit No.CAD 990794133. A separate annual report is submitted to the DTSC in March each year addressing the Post Closure Permit Requirements and focuses on Waste Management Unit(WMU)A. However,all analytical data are provided in each report and the requirements of each program are being satisfied. This report presents quarterly sampling results for the reporting period dating from October I to December 31,2010(fourth quarter 2010),and also summarizes the monitoring results obtained for the 2010 monitoring year. For the Forward Unit,environmental monitoring for the fourth quarter 2010 yielded results similar to previous quarters. Seventeen new historical intrawell maximum values were measured,including eight first-time volatile organic compound(VOC)detections in samples collected from groundwater monitoring wells. During the monitoring period,the following VOCs were measured above their respective practical quantitation limits(PQIs)at the Forward Unit:acetone and 2-butanone in the samples collected from wells MW-2A and MW-17; and cis- 1,2-dichloroethene(cis-1,2-DCE),tetrachloroethane(PCE), and trichloroethene(TCE)in the samples collected from upgradient(background)wells MW-22 and MW-23R. In addition,PCE was measured at an estimated trace concentrations in the sample collected from well MW-14. Concentration limits(CLs)were exceeded for one or more monitoring parameters in samples from seven wells. In accordance with the Revised Post-Closure Maintenance Plan(RPCMP), inorganic exceedances of CLs that are potential impact constituents(potassium at well MW-18, and chloride at well MW-22)will be resampled in February 2011 (during the first quarter 2011 sampling event),and a second independent sample will be collected in March 2011. The results of the two retests will be submitted to DTSC and RWQCB;under separate cover.