ARCHIVED REPORTS XR0010004 - Laserfiche WebLink

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,1 Date May 13,2004 Quarter 151 Quarter,2004 Please be advised that the laboratory reported trichloroethene (TCE) and tetrachloroethene (PCE) in the analytical report this quarter TCE and PCE were detected above method detection limits in groundwater samples collected from the following site monitoring wells (including concentration) VW-1 (TCE 16 p.g[L), VW-2 (TCE 14 Ag/L, PCE 2 3 pg/L),VW-3 (TCE 15µg/1.,),VW-4(TCE 0 52µg/L),VW-5 (TCE 1 6 pg/L,PCE 14 pg/L.), VW-8 (TCE 25µg/L),VW-10(TCE 25 pg/L),VW-11 (TCE 1 4µg/L),VW-12 (TCE 0 6µg/L,PCE 1 81Cg/L),MW-1 (TCE 3 4 µg/L, PCE 37 µg/L), MW-2 (TCE 0 56 µg/L.,PCE 17 ug/L), MW-3 (PCE 14 µg/1.,), MW-6 (TCE 20 µg/L,PCE 220µg/L), MW-7 (TCE 18 µg/l, PCE 180 pg/l-), MS-IA (PCE 0 7 pg/L), MS-2A(TCE 0 54 pg/L), MS-213 (TCE 0 59 pg/L), MS-3A (TCE 0 54 pg/L), and MS-3B (TCE 0 54 pg1L.) Monitoring wells VW-7, MW-4, MW-5, and MS-1B were the only wells to report both TCE and PCE as below method detection lrnuts The highest concentrations of PCE and TCE were detected in site monitoring wells MW-6 and MW-7,respectively Groundwater elevations generally increased relative to the previous sampling event The inferred direction of groundwater flow across the site was toward the southeast with an average hydraulic gradient of 0 001 ft/ft This report is based on data, site conditions, and other information that are generally applicable as of the date of the report,and the conclusions and recommendations herein are therefore applicable only to that time frame TABLES Table 1 Groundwater Monitoring and Analytical Data Table 2 Fuel Oxygenates Analytical Data Table 3 Groundwater Gradient Data i FIGURES Figure 1 Groundwater Elevation Contours Figure 2 Groundwater Analytical Summary APPENDICES Appendix A Field and Laboratory Procedures Appendix B Laboratory Analytical Reports,Chain-of-Custody Documentation,and Field Data Sheets Appendix C GeoTracker Upload Confirmation K 1wp�cssUS BP ARC0502130tQuanertyll QTR04Q130GWMR 1Q04 do Page 3