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1.4 SOLID WASTE MONITORING • According to the Forward Landfill Operations Manager,Forward Landfill received a total of 443,576 tons of solid waste during the first quarter 2006 (Appendix A). Figure 1-2 shows the approximate location of waste placement during the first quarter 2006 monitoring period. The following types of waste were received: Non-hazardous solid waste—435,878 tons Asbestos—609 tons Sewage and wastewater treatment sludge—7,089 tons 1.5 LANDFILL GAS MONITORING During monthly landfill inspections, the CEHD regularly measured methane in perimeter soil-pore gas probes GP-11 and GP-12 at the Forward Landfill with concentrations up to 60 percent. In response to elevated methane concentrations measured in these probes, and in accordance with California Code of Regulations Title 27, Section 20937, Forward is currently installing additional landfill gas extraction wells and is working on optimizing the 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 2006,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 2006, with the exception of well MW-17, all of the groundwater monitoring wells and surface water stations were sampled by Bryan A. Stirrat& Associates(BAS), an affiliate of GeoLogic Associates (GLA)on January 31 and February 1, 2006. Well MW-17 was not sampled this quarter due to an inoperable pump, which was pulled for repair Prior to collection of samples,depth-to-water measurements were recorded in all groundwater monitoring wells on January 31, 2006. All lysimeters were inspected and a vacuum was set on January 31,2006. The lysimeters were checked for soil-pore liquid on February 10, 2006 all lysimeters were dry and samples could not be obtained. A single sample set was collected from each sampling point and submitted to BC Laboratories, Inc. (BC) of Bakersfield, California, a state certified laboratory under contract to Forward. Samples were analyzed for the parameters stipulated in RWQCB Order No. R5-2003-0049. Table 2-1 summarizes site monitoring parameters, analytical methods, and monitoring frequency. Water quality samples were also analyzed in the D:\2003_021\ForwardAustin_w06.doc\4/20/2006 4 Geologic Associates