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Canepa's Car Wash
<br /> 6230 Pacific Avenue, Stockton, California June 30, 1995
<br /> Quarterly Groundwater Sampling Report, June, 1995 Page• 2
<br /> 15,000 µg/1 Benzene, 10,000 µg/1 Toluene, 720 µg/1 E-Benzene, 3,700 µg/1 Xylene, and 38 mg/L
<br /> Gasoline MW-2, 37,000 µg/1 Benzene, 9,600 µg/I Toluene, 1,000 µg/1 E-Benzene, 6,700 µg/1
<br /> Xylene, and 79 mg/I Gasoline MW-4, 1 5 gg/1 Benzene, 0 46 µg/1 Toluene, 4 3 pg/l Xylene, and
<br /> 0 061 mg/1 Gasoline MW-6, 1,900 µg/1 Benzene, 10 µg/1 Toluene, 8 9 µg/1 E-Benzene, 19 µg/1
<br /> Xylene, and 19 mg/L Gasoline MW-7, 860 µg/1 Benzene, 0 81 µg/1 Toluene, 0 90 µg/l E-
<br /> Benzene, 0 97 µg/1 Xylene, and 0 83 mg/L Gasoline MW-8, 2 3 µg/[ Benzene, 1 6 µg/1 Toluene,
<br /> and 0 81 pg/l Xylene) MW-4 remained "ND" for E-Benzene MW-5 tested "ND" for all
<br /> I contaminants except for 1 7 µg/1 of Xylene MW-6 had a drop in Toluene to 1 0 µg/1 this quarter
<br /> MW-8 tested "ND" for E-Benzene and Gasoline
<br /> The analytical results from the last sampling event (3/16/95) are included in Table 2 for
<br /> comparison
<br /> I On May 2, 1995, WHF Consultants informed San Joaquin County DHS/EHD and Stockton
<br /> Municipal Utilities of the positive coliform bacteria results at this site The City of Stockton
<br /> reported by letter, June 1, 1995, that on May 8, 1995, their crew discovered a improperly
<br /> abandoned sewer Iine On May 25, 1995, a crew repaired an off-set point and capped the line in
<br /> the vicinity of MW-2 and MW-7 (see map in Appendix D) The groundwater gradient appears to
<br /> be flattening More positive results should be seen in the next quarterly sampling report in
<br /> September
<br /> Prepared by
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<br /> co NO LD 22 339
<br /> Lee De ano, P E 22339 ' EXP 9,3"7
<br /> California Registered Civil Engineer 110-
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<br /> I -�--� C, A
<br /> Robert W C almers
<br /> WFF Staff Geologist
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