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Water Quality Monitoring Report French Camp Landfill Weekly site visits were conducted by French Camp Landfill personnel during the monitoring period. Records of the French Camp Landfill inspections are on file at the Republic Services Forward Landfill Field Office. Weekly site visit summary reports for the monitoring period are also presented in Appendix A. According to these weekly reports, the French Camp Landfill Operations Manager certifies that standard observations were conducted during the monitoring period (see signed "Certification Statement" included in Appendix A). 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 stations were sampled on March 29, 2016. Quarterly depth-to-water and stream gauging were performed on January 24, March 29, and May 27, 2016. 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 laboratory method blanks. Laboratory method blanks are analyzed for all of the analytes included in the monitoring program. During the monitoring period, no constituents were detected in blank samples. A duplicate sample was collected from leachate well MW-2 and labeled DUP. Duplicate test results are presented along with the primary data in Table 2. Comparison of the primary and duplicate sample results indicates that there was good agreement with a relative percent difference (RPD) of less than three percent when both results are measurable concentrations above the practical quantitation limit (PQL). 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 acceptable Project No.2016.0007 2