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iQuik Stop No 121 i 30-1u1-01 CCI Project No 12116-2 TABLE 2 - SUMMARY OF MONITORING WELL GROUNDWATER SAMPLE ANALYSIS Quik Stop No 121 1196 West Louise Avenue,Manteca CA I Ethyl Total Sample Date TPHg Benzene Toluene Benzene Xylenes MTBE Number Sampled (ug/1) (ug/1) (ugll) I (ug11) (ugll) (ugll) MW-1 4/30/1999 140 <05 <0 5 <0 5 <1 <1 7/21/1999 <50 <0 5 <0 5 <0 5 <1 87 10/1811999 58 2 08 0 7 3 <1 1/20/2000 8,600 <50 <50 <50 <50 21,000 2117100 N R <1 <1 <1 <1 11,000 41612000 3,100 <25 <25 <25 <25 5,700 715/2000 690 084 <0 5 <0 5 <0 5 940 10/512000 800 <5 <5 <5 <5 1,000 1/10/2001 5,300 <25 <25 <25 <25 11,000 4/1812001 170 <0 5 <0 5 <0 5 <1 13,000 7/17/2001 —210M— <0 5 <0 5 <0 5 <05 740 MW-2 4/30/1999 82 <0 5 1 <0 5 <0 5 <0 5 <1 7/21/1999 <50 <0 5 <0 5 <0 5 <05 <1 10118/1999 <50 <0 5 <0 5 <0 5 <0 5 <1 112012000 200 22 <0 5 <0 5 <05 59 2117100 N R <1 <1 <1 <1 3 4/612000 70 <0 5 <0 5 <0 5 <0 5 55 7/512000 <50 <0 5 <0 5 <0 5 <0 5 99 1015120001 <50 <0 5 <0 5 <05 <0 5 <5 1/10/2001 <50 <0 5 <0 5 <0 5 <0 5 <5 4/18/2001 81 2 '05 <05 <1 29 711712001 <50 <0 5 <0 5 <0 5 <0 5 85 MW-3 4/30/1999 <50 1 <0 5 1 1 4 <1 7/21/1999 230 <05 3 <0 5 <1 12,000 10118119991 400 2 1 08 5 <1 1/20/2000 25,000 <125 <125 <125 <125 58,000 2117100 N R <1 <1 <1 <1 49,000 4/6/2000 16,000 <100 <100 <100 <100 43,000 715/2000 55,000 <100 <100 <100 <100 52,000 10/5/2000 94,000111 <0 5 <0 5 <0 5 <05 110,000 1/10/2001 34,000 <100 <100 <100 <100 110,000 4/18/2001 460 11 <0 5 <0 5 2 98,000 7/17/2001 1,000 67 095 <0 5 1 6 11Q000 BB 1 7/17/2001 <50 <0 5 <0 5 <0 5 <1 c1 TPHg Tolaf Petroleum Hydrocarbons as Gasoline Current Central Valley RWQCB Water Quality Goals ugll Micrograms per Liter Toluene 42 ppb < Below laboratory Detection Limit Ethyl Benzene 29 ppb N R Note Requested Xylenes 17 ppb MTBE Methyl tertiary-butyl ether Benzene 1 ppb TPNg 5 ppb i Foot Notes Compliance 1 Results within quantitation range chromaligraphic pattern not typical of fuet & 2 Confirmation sampling OClosure, inc