Laserfiche WebLink
Condor Earth Technologies, Inc. <br /> 21663 Brian Lane Sonora CA 95370 (209) 532-0361 <br /> 188 Frank West Circle Suite I Stockton CA 95206(209)234-0518 <br /> August 19,2002 Condor Project No. 1707 <br /> THIRD QUARTER GROUNDWATER MONITORING REPORT JULY, 2002 <br /> AND SOIL VAPOR EXTRACTION SYSTEM STATUS UPDATE <br /> l TU D <br /> Site Address: Canepa's Car Wash <br /> 6230 Pacific Avenue OCT 0 3 2002 <br /> Stockton, California <br /> EIVVlI,tiMVlEiVT HEALTH <br /> Client: Mr. Remo Canepa PERMIT/SERVICES <br /> 1536 N. Hunter Street <br /> Stockton, California <br /> Primary Agency: Jeffrey Wong, San Joaquin County Public Health Services, Environmental Health <br /> Department(SJCEHD) <br /> Copy to: Marty Hartzel, California Regional Water Quality Control Board (CRWQCB) <br /> This is a report of the results of the third quarter, 2002 groundwater monitoring event conducted on July <br /> 1, 2 and 3, 2002 at the above-referenced site. Figures indicating the site location, groundwater elevation <br /> contours, groundwater elevation fluctuations (hydrograph), benzene iso-concentration contours, MTBE <br /> iso-concentration contours and MTBE concentration in MW-3 (Attachment A, Figures 1, 2, 3, 4, 5, and 6, <br /> respectively) are attached to this report. Also attached are site background information, historical <br /> monitoring data, field forms, and laboratory analytical results. This report has been submitted to the <br /> SJCEHD and the CRWQCB as indicated above. <br /> Summary of July 2002 Quarterly Groundwater Monitoring Results <br /> Field Activity <br /> Number of groundwater wells 12 Number of groundwater wells sam_pled 12 _ <br /> Ndmber of groundwater wells monitored 12 Date(s) monitored and sampled 71/1,2,3 /02 <br /> Site Hydrology <br /> Average depth to groundwater below 33.65 feet Average increase(+)/decrease(—) in _1 7-0.75 feet <br /> monitoring well measuring points depths to groundwater since last sampling I (Deeper) <br /> Approximate flow direction and 0.004 ft/f7 east-norththeast as measured <br /> groundwater <oradientbetween wells MW-3 and MW-6. <br /> Groundwater Contamination <br /> Monitor wells c nntlining free product Nona, --T Monitor wells with detected odor- 4 <br /> Number of wells with concentrations 6 Number of wells with concentrations at or T4 <br /> below the benzene and MTBE MCLSabove the benzene and MTBE MCLS <br /> Nature of contamination: STEX, _ Range in monitor well concentrations: <br /> TPH-G, Benzene(gg,1L) <0.5 - i 8,000 <br /> F MTBE TPH-G(mg/L) <0.05--50 <br /> MTBE (µg/1,) <5.0--2,900 <br /> 1 <br /> 4M <br /> IL CONDOR <br />