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February 28, and March 28, 2008. During the January inspection methane was measured at 9.6 percent in probe GP-9S,which resulted in a notice of violation for explosive gas control. Minor adjustments were made to the landfill gas(LFG)extraction system and during the February and March inspections no violations were noted. Completed inspection forms are presented in Appendix A. 1.4 SOLID WASTE MONITORING According to the Forward Landfill Operations Manager, Forward Landfill received a total of 337,108 tons of solid waste during the first quarter 2008 (Appendix A). Figure 1-2 shows the approximate location of waste placement during the first quarter 2008 monitoring period. The following types of waste were received: Non-hazardous solid waste—328,841 tons Asbestos—683 tons Sewage and wastewater treatment sludge—7,584 tons 1.5 LANDFILL GAS MONITORING With the exception of probe GP-9S, no perimeter soil-pore gas probes exceeded the regulatory limit of 5 percent during the first quarter 2008. As discussed above, minor adjustments were made to the LFG extraction system, and as a result, methane was ® measured at 0.1 and 0.2 percent in this probe during the February and March inspections, respectively. In accordance with California Code of Regulations Title 27, Section 20937, Forward continues to install additional landfill gas extraction wells (as needed), and makes regular adjustments to the landfill gas extraction system to optimize efficiency of the landfill gas extraction system. Furthermore,in accordance with CCR Title 27, Section 20937(a)(1), methane monitors are installed in all buildings at the site to protect public health and safety and the environment. During the first quarter 2008,no methane was detected in any of the facilities buildings. A copy of the landfill gas monitoring probe data is provided in Appendix A. 2.0 FORWARD UNIT 2.1 WATER QUALITY MONITORING 2.1.1 Sampling and Laboratory Analyses During the first quarter 2008, depth-to-water measurements were recorded in all wells and the groundwater monitoring wells were sampled by ATC Associates (ATC)between February 4 and 7, 2008. Both surface water stations were sampled on February 4,2008, and all lysimeters were inspected and a vacuum was set on February 6 and 7, 2008. The lysimeters were checked for soil-pore liquid on March 18, 2008, and sufficient soil-pore liquid was present to collect samples from lysimeters E-2, W-2, LY-A, and LY-BG1. Of note, lysimeter D-01 has been buried and Forward is working to locate this lysimeter. D:\2007_0043\1FA_1Q08.doc 3 Geologic Associates