ARCHIVED REPORTS_XR0006723 CASE 1

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s TABLE 6 CUMULATIVE ANALYTICAL RESULTS - GROUNDWATER (CPT BORINGS) Former RINO Service Station, 1001 East Yosemite Avenue, Manteca, California OXYGENATES SAMPLE DATE SAMPLE SAMPLE ETHYL- LOCATION SAMPLED ID DEPTH TPH-G BENZENE TOLUENE BENZENE XYLENES MTBE DIPS ETBE TAME TBA 1,2-DCA EDB CPT-1 09/12/00 CPT1-78GW 78 ND<50 ND<O 5 ND<O 5 ND<0 5 IND—<0 5 ND<0 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<0 5 ND<0 5 CPT-2 09112/00 CPT2 58GW 58 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<0 5 059 ND<0 5 ND<O 5 ND<0 5 ND<5 ND<0 5 ND<0 5 CPT2-78GW 78 1 ND<50 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<0 5 I ND<5 ND<O 5 ND<D 5 CPT-3 09/12100 CPT3-57GW 57 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<0 5 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<O 5 ND<0 5 CPT3 77GW 77::]l ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<O 5 ND<O 5 CPT-4 09f 12100 CPT4-66GW 66 ND<50 ND<O 5 ND<0 5 ND<O 5 ND<D 5 86 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<O 5 ND<0 5 CPT4 78GW 78 ND<200 ND<2 ND<2 ND<2 ND<2 1,100 ND<2 ND<2 ND<2 34 ND<2 ND<2 CPT-4A 06/28102 CPT4A-78 78 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<O 5 NA CPT4A-124' 124 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT4A 139" 139 ND<50 ND<0 5 ND<O 5 ND<O 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<O 5 NA CPT-5 06/27/02 CPT5-77 77 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT5-88 88 ND<50 ND<0 5 ND<0 5 ND<O 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<O 5 NA 06/28/02 CPT5-124' 124 N0<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 N0<05 NA CPT5 139' 139 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 06 ND<O 5 ND<O 5 N0<0 5 ND<5 ND<O 5 NA CPT-6 06127102 CPT6-23 23 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT6-50 50 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<1 ND<0 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT6-63 63 ND<50 ND<O 5 ND<0 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<O 5 NA CPT6-88 88 ND<50 ND<0 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT6-101 101 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<O 5 ND<0 5 ND<0 5 ND<5 ND<0 5 NA CPT6 120 120 ND<50 ND<O 5 ND<O 5 ND<0 5 N0<1 ND<O 5 ND<O 5 ND<O 5 ND<0 5 ND<5 ND<0 5 NA CPT6-139 139 ND<50 ND<O 5 ND<O 5 ND<0 5 ND<1 ND<O 5 ND<0 5 ND<0 5 ND<O 5 r NpfL_jl ND<0 5 NA I NOTES All results are reported in micrograms per liter(ug1l)which translates to parts per billion(ppb) Sample depths in feet below ground surface Total Petroleum Hydrocarbons as Gasoline(TPH G) benzene toluene ethylbenzene xylenes by EPA 8260B or EPA 802018015M Oxygenates Methyl-t-butyl ether(MTBE) Di-isopropyl ether(DIPE) Ethyl-t-butyl ether(ETBE) Tert amyl methyl ether(TAME) and Tert-Butanoi(TBA)by EPA 82606 1 2 d chloroethane(1 2-DCA)and 1 2 dibromoethane(EDB)by EPA Method 82606 ND<50=Not Detected at reporting limit of 50 ppb NA =Not analyzed for specified compound Sam0e collected from a second dedicated sample boring at location