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field for dissolved oxygen,turbidity,temperature, specific conductance, and pH and recorded on well data sheets. The groundwater monitoring wells, surface water monitoring points, and leachate monitoring points (sampled monthly)were sampled in accordance with the sampling and analysis procedures detailed in Appendix B. The well data sheets, 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 monitoring wells,lysimeter and leachate sampling stations are summarized in Tables 2-2 through 2-6. 2.1.2 QA/QC Results The QA/QC program completed for the first quarter 2006 water quality monitoring event included analyses of two field blanks, two trip blanks, one equipment blank,three laboratory method blanks, and one duplicate sample. The trip, field, equipment, and laboratory method blanks were analyzed for VOCs by EPA Method 8260. The results of the QA/QC program indicate that four VOCs (benzene, ethylbenzene,toluene, and total xylenes)were detected in one field and equipment blank during the first quarter 2006 monitoring event. However,review of the analytical data results indicates that none of these VOCs were detected in the primary samples collected from the Forward Landfill. During the first quarter 2006 monitoring event, one duplicate sample was collected from well MW-13 and labeled MW-DUP. As shown on Tables 2-2 and 2-4,duplicate sample analysis yielded good correlation(within 10%)with the primary sample results. Of note, concentrations less than the practical quantitation limit(PQL)were not included in the duplicate comparison, since these are estimated values. Review of first quarter 2006 sampling dates and laboratory analytical certificates indicates that the laboratory analyses were completed within required holding times. Based on the results of the laboratory blank and duplicate analyses,it is concluded that the laboratory data generated for the first quarter 2006 monitoring period are generally acceptable. 2.1.3 Groundwater Elevations and Contours Prior to purging and sampling, each well was sounded for water depth using a weighted electronic sounder to an accuracy of 0.01 foot, and the static water level was recorded on a Well Data Sheet(Appendix Q. The groundwater elevations were calculated for each well by subtracting the depth-to-water measurement from the top-of-casing reference elevation. The current groundwater elevation data for the Forward Unit is summarized in Table 2-3. The groundwater elevation data obtained during first quarter 2006 monitoring period were used to generate the groundwater elevation contour map shown on Figure 2-1, which indicates that groundwater in the northeast corner of the site flows to the south and west at an average hydraulic gradient of approximately 0.004 to 0.01 ft/ft, while D:\2003 021\ForwardAustln w06.docW/20/2006 5 Geologic Associates