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3.0 SOLID WASTE MONITORING The French Camp Landfill has been formally closed and no longer receives waste. 4.0 WATER QUALITY MONITORING 4.1 SAMPLING AND LABORATORY ANALYSES All of the groundwater and leachate monitoring wells and surface water monitoring points were sampled on February 10 and 16, 2012. Quarterly depth-to-water and stream gauging was performed on February 10, and April 20, 2012. A single sample set was collected from each sampling point(groundwater, leachate, and surface water) and analyzed by BC Laboratories for the parameters stipulated in RWQCB Order No. R5-2007-0046, as summarized in Table 1. Water quality samples were also analyzed in the field for oxidation-reduction potential, turbidity, temperature, specific conductance, and pH and these field measurements were recorded on well data sheets. The groundwater and leachate monitoring wells and surface water monitoring points were sampled by Del-Tech Geotechnical Support Services (Del-Tech) in accordance with the sampling and analysis procedures detailed in Appendix B. Well data sheets, raw laboratory data, certificates of analyses, and chain-of-custody records for the sampling program are included in Appendix C. The laboratory analyses and field results for groundwater wells and surface water sampling stations are summarized in Tables 2 through 5. 4.2 QA/QC RESULTS The quality assurance/quality control (QA/QC) program completed for the monitoring event included analyses of one duplicate sample and two laboratory method blanks. Laboratory method blanks were analyzed for all of the analytes included in the monitoring program. During the monitoring period, no VOCs were detected in any of the laboratory method blanks. A duplicate sample was collected from well MW-8A and was labeled MW-Duplicate. Duplicate test results are presented along with the primary data in Table 2. Comparison of the primary and duplicate sample results, when both results are measurable concentrations above the practical quantitation limit(PQL) indicates good agreement with a relative percent difference of less than 2%. Review of sampling dates and laboratory analytical certificates indicates that all of the laboratory analyses were completed within required holding times. Based on the results of the laboratory QA/QC analyses, it is concluded that generally acceptable QA/QC procedures were exercised, and the water quality samples collected from the French Camp Landfill appear to be representative of water quality at the site. CA2012-0027TFCISA12.doe 2 Geo-Logic Associates