Laserfiche WebLink
r_ <br />' 30 May 2001 <br /> AGE-NC Project No 95-0128 <br />' Page 5 of 6 <br />' in a chilled container and transported to a Cali forma Department of Health Services (DHS)-certified <br /> laboratory for analysis for <br /> • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d, <br /> respectively) by EPA Method 8015 Modified and <br />' 0 Volatile aromatic compounds, including benzene, toluene, ethylbenzene and xylene (BTEX) <br /> and methyl-tertiary butyl ether (MTBE) by EPA Method 8020 <br /> I <br /> 32 1 Extracted Water Analytical Results <br /> The results of the laboratory analysis detected TPH-g at a maximum concentration of 6,000 <br /> micrograms per liter(ug/l) BTEX compounds were detected in the grab ground water samples at <br /> concentrations as high as 970 ug/l (benzene) MTBE was detected in the grab water samples at a <br /> maximum concentration of 5,900 ug/l The laboratory reports (McCampbell Analytical Inc Lab I D <br /> 64147 to 64149), Quality Assurance and Quality Control data and chain-of-custody forms are <br /> presented in Appendix I <br /> 33 PURGED GROUND WATER DISPOSAL <br /> On 06 April 2001, the ground water extracted during the pumping test was pumped from the <br /> Iaboveground storage Baker tank into a vacuum truck (supplied by American Valley Waste Oil), the <br /> purged water was ti ansported off-site under hazardous waste manifest to Industrial Service Oil Co <br /> Inc , a waste treatment facility located in Los Angeles, California Documentation and uniform, <br /> Ihazardous waste manifest for disposal of the pump test purged water is contained in Appendix J <br /> 4 0 SUMMARY AND CONCLUSIONS <br /> Thegroundwater ta����by�le resided within <br /> � the well screen <br /> ♦�yo�fthe extraction well The most likely <br /> lsource <br /> extracted Iry .']d,Y 4L Y' ] AA- I-hi�Ghly pe1111Ria1�11 Jalid and C�laYel, e1lLVLlntL-1-11 <br /> l nST1rV111 LS <br /> feet to 40 feet bsg <br /> The implications from the March 2001 aquifer ground water pumping test are <br /> I Ground water draw-down of at least 11 15 feet was observed in extraction well EW-1 <br /> following 700 minutes of continuous pumping (5 GPM), ground water draw-down was <br /> observed in well MW-5 {located 15 feet to the east) at 1 1 feet, well MW-4 (located 60 feet <br /> IAdvanced CcoEnrironmentai Inc <br /> I <br />