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SUMMARY OF GROUNDWATEATION AND ANALYTICAL DATA <br /> STOCKTON MAI NANCE STATION <br /> STOCKTON,CAI IFORNIA <br /> De <br /> pth To Croundwater TPH G TPII n I3ertaerte Toluene Eth?"I- benzene TONT MTBE <br /> SVelt l b Uat[ t'OC Elevation Graundwater clevatl'on (}tgll)' ffi 4) Owl) Xylcnts WA) <br /> VW 2 02/06/1996 21 90 63 17 4127 16 000 <50 3 000 3 100 260 2000 <50 <br /> VW 2 04/11/1996 2190 6163 3973 - _ w <br /> VW 2 44/23/1996 2190 6137 3947 54 000 <50 8 100 5 600 290 6 500 60 <br /> VlV 2 07/02/1996 21 90 6019 38 29 20 000 1 400 3 000 1 700 200 1 700 53 <br /> VW 2 10/21/1996 21 90 6055 3965 17 000 570 4200 1 300 89 430 43•• <br /> VW 2 05/29/1997 21 90 5557 3367 15 000 <500 2 300 1 600 380 2200 29 <br /> VW 2 10/37/1997 2190 5719 3529 11 000 <500 1 800 580 170 870 22 <br /> VW 2 12/29/1997 2190 5699 3509 10 000 570 1 300 1 400 230 1200 <5 <br /> VW 2 03116/1998 2190 5370 31 80 7 400 10000 1 100 860 ISO 1100 <5 <br /> VW 2 06/26/1998 2190 4997 2797 9 000 6000 1 400 670 330 2 100 (<5) <br /> VW 2 0912811998 2190 5175 2985 8400 <5000 1 800 530 400 1900 75(37 4) <br /> VW 2 12/02/199H 2190 4989 2799 7 800 2900 1 100 360 290 1 100 38(54) <br /> VW 2 03131/1999 22 18 4651 2433 2 100 320 1 50D 460 750 1950 83 <br /> VW 2 06/28/1999 22 is 4674 2456 5 700 <100 865 57 <0 2 302 76` <br /> VW 2 09/23/1999 22 19 4959 2741 4 300 300 1 270 98 199 869 32 <br /> VW 22• 09/23/1999 NA NA NA 4 800 450 1 230 100 418 878 30 <br /> VW 2 01/06/2000 22 18 4839 2621 7,804 SO4 933 164 439 1180 <0 6 <br /> Notes <br /> TOC=Tap of casing elevation MSL= Mean Sea Level <br /> TPH G-Total Petroleum Hydrocarbons as Gasoline by CPA Method 8015M <br /> TPH D=Total Petroleum Hydrocarbons as Diesel by FPA Method 8015M <br /> 13TEX=Benzene Toluene Fthylbenzene and Total Xylenes by FPA Method 8020 <br /> MTAF=Methyl Tertiary Butyl Ether by FPA Method 8020 <br /> NA-Not applicable <br /> <-Less than method detection Broil <br /> Not measured sampled tested or present <br /> Denotes duplicate sample taken <br /> All groundwater level measurements are presented in feet <br /> mg/l.=milligrams per liter <br /> µg11=micrograms per liter <br /> (<5)=MT131 eoneentrahon al c ticul itLd by I PA Method 8260 <br /> 'Denotes MTBL samples analyzed by FPA Method 8260B <br /> NR denotes Not Reported <br /> NU denotes laboratory analysts data not used due to exceedence of sample holding times <br /> All data prior to 311199 was provided by the previous consultant(PSn <br /> A'I"alter the laboratory result indicates that the compound was detected above the method detection limit,but below the laboratory reporting limit <br /> 3rn MI.W-d. Page 9 of 9 <br />