Laserfiche WebLink
• Cambria Environmental Technology, Inc (Cambria) evaluated water-level measurement data <br /> and prepared a ground water contour map (Plate 2) Ground water flow direction varies <br /> across the site The hydraulic gradient ranges from 0 007 to 0 033 <br /> • Ground water samples collected from Wells MW-1 through MW-10 contained TPPH <br /> concentrations ranging from ND to 1,700 ppb, benzene concentrations ranging from ND to <br /> 37 ppb, and MTBE concentrations ranging from ND to 41 ppb A chemical concentration <br /> map is presented on Plate 2 <br /> Quarterly Sampling <br /> Monitoring Wells MWA through MW-10 were sampled and analyzed for Total Purgeable Petroleum <br /> Hydrocarbons quantified as gasoline (TPPH) according to EPA Method 8015 (Modified), benzene, <br /> toluene, ethylbenzene, xylenes (BTEX), and MTBE according to EPA Method 8020 Additionally, a <br /> duplicate sample and an equipment blank were prepared and analyzed for quality control purposes <br /> Field monitoring data and chemical analytical data are summarized in Table I Blaine's ground water <br /> monitoring report is presented in Appendix A <br /> Conclusions and Recommendations <br /> Wells MW-1, MW-3 through MW-5, MW-7, and MW-8 have shown decreasing quantities of TPPH <br /> for approximately the last four years Quarterly monitoring, sampling, and reporting will continue <br /> on the established schedule <br /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> Thomas Magn <br /> Prole Ge st <br /> C,�t�� hUNOP��2 <br /> Diane M Lundquist, P E `1'+ <br /> Principal Engineer <br /> C46725 No C46725 {� <br /> s ctvti� �Q <br /> Tq�or CAI�`�� <br /> i <br /> 240-078 2 <br />