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i <br /> s � • <br /> TABLE 4 <br /> GROUNDWATER MONITORING DATA <br /> Quik Stop No 39 <br /> 2285 Fremont Street,Stockton, California <br /> total TOC GW <br /> Well TPHm TPHg B T E X MTBE DIPE E;TBE TAME TBA meth eth DCA DBA Pb DTW elev elev <br /> Numbs Date (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L)(ug/L (ug/L) (ug/L) (ug/L) (ugll-) (ug/L) (ug/L) (ug/L) (ug/L) (feet) (feet msl) (feet msl) Comments <br /> MW-3 12/15199 no 360 <0 50 <0 50 <0 50 <0 50 <5 0 no no na no na no no 4408 2038 -2370 <br /> screens 05/19/00 no 710 <0 50 <0 50 <0 50 <0 50 <50 na no no no no no na no no 4073 -4073 no comment <br /> Interval 08/31/00 no 480 <0 50 <0 50 <0 50 <0 50 <50 no na no no no no no no no 4438 -4438 no comment <br /> 40'-60' 11102/00 no 310 <0 50 <0 50 <0 50 <050 <050 <0 50 <0 50 <0 50 26 <50 <50 160 <0 50 no 4483 2040 -2443 no odor/no sheen <br /> 03/26/01 no 270 <0 50 21 <0 50 54 <0 50 <0 50 <0 50 <050 23 no no no no no 4294 2254 no odor/no sheen <br /> 06/21101 no 310 <0 50 <0 50 <050 <0 50 <0 50 <0 50 <0 50 <0 50 26 <50 <5 0 no no no 4424 -2384 no odor/no sheen <br /> 09/17/01 no 210 <0 50 15 <050 <0 50 <50 <50 no no na no no no no no 4749 -2709 no odorino sheen <br /> 11129/01 na 130 <0 50 <0 50 <050 <0 50 <0 50 <0 50 <0 50 <0 50 15 <50 <5 0 no no no 4755 -2715 no odor/no sheen <br /> 02/18/02 <100 130 <0 50 <0 50 <0 50 <050 <0 50 <050 <0 50 <0 50 89 <50 <50 150 <0 50 68 4622 -2582 no odor/no sheen <br /> 05/02/02 <100 150 <0 50 052 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 15 <50 <5 q 130 <0 50 na 4602 2013 -2589 no odor/no sheen <br /> 08/22/02 <100 210 <0 50 <050 <0 50 <0 50 <0 50 <050 <050 <0 50 19 no no 210 no no 4998 -2985 no odorino sheen <br /> 11/12/02 no 150 <0 50 <0 50 <0 50 11 <0 50 <0 50 <0 50 <0 50 12 no no 100 na <0 00501 5082 -3069 no odorino sheen <br /> 01/31/03 no 140 <0 50 <0 50 <0 50 <0 50 <0 50 <050 <0 50 <0 50 85 no na 100 no no 4917 -2904 no odor/no sheen <br /> 05/02/03 no 130 <0 50 057 <0 50 <0 50 <050 <0 50 <0 50 <0 50 <5 0 no na 120 no na 4773 2760 no odor/no sheen <br /> 08/07103 na 160 <0 50 <0 50 1 2 <0 50 <0 50 <0 50 <0 50 <0 350 <8 0 na na 100 no no 5021 -3008 no odor/no sheen <br /> 10/28/03 no 110 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 <50 <5 0 98 no no 51 65 -31 52 no odor/no sheen <br /> 02/03/04 na 90 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <0 50 <5 0 no <5 0 79 no no 5008 -2995 no odor/no sheen <br /> N910a TPHm=total petroleum hydrocarbons as motor oil MTBE=methyl tert-butyl ether DCA=1 2-dichloroethane <=less than indicated reporting limit <br /> TPHg=total petroleum hydrocarbons as gasoline DIPE=dusopropyl ether DBA=1,2-dibromoethane ns=not sampled <br /> 8=benzene ETBE=ethyl tert-butyl ether total Pb=total lead nm=not measured <br /> T=toluene TAME=tert-amyl methyl ether '=soluble lead DTW=depth to groundwater <br /> E=ethylbenzene TBA=tert-butanol GW=groundwater <br /> X=total xylenes meth=methanol TOC=top of casing <br /> eth=ethanol elev=elevation <br /> msi=mean sea level <br /> 039gmr04 As <br /> 703945 Page 2 of 2 HORIZON ENVIRONMENTAL INC <br />