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T � Mj <br /> . SUMMARY OF GROUNDWATERFN <br /> TION AND ANALYTICAL DATA <br /> STOCKTON MAIANCE STATION <br /> STOCKTON,CALIFORNIA <br /> Wali l t) Date TOC EltveUon Depth To Grutmd,Kaler 'GPX]a TFRD Benzene Talaene FAI0l- henkene MTHE <br /> Oroundwalsr 'ch-don Gam) rgfl} [ (Itg1l) � �, w <br /> W-2 021061996 21 90 63 17 -41 27 16 000 <50 3000 3 100 260 2000 <50 <br /> V <br /> VW 2 04111/1996 1 2190 6163 3973 1 — —VW 2 0483/1996 2190 6137 3947 54 000 <50 8 100 i 5 600 290 6 500 60 <br /> VW 2 07/02/1996 2190 6019 -3829 20 000 1 400 3 000 1 700 200 1 700 53 <br /> VW 2 ]012311996 2190 6055 3865 17000 570 4200 1300 1 89 430 43*• <br /> VW 2 05/29/1997 2190 5557 -..-3367 15 000 <500 2 300 16W 170 2200 29 <br /> VW 2 10117/1997 2190 5719 3529 11 000 <500 1 800 580 170 870 22 <br /> i <br /> VW-2 12/29/1997 2190 5699 3509 10000 570 1300 1400 230 1200 <5 <br /> VW 2 03/16/1998 2190 5370 3180 7 400 10000 1 100 860 ISO 1 100 <5 <br /> VW 2 061261998 2190 4987 2797 9000 <5000 1 400 670 330 2,100 < <br /> VW 2 09/28/1998 2190 5175 2985 8 400 <5000 1 800 530 400 1900 75 7 A <br /> VW-2 12/02/1998 2190 4989 2799 7 800 2900 1 100 360 290 1 100 38(54) <br /> VW 2 03/31/1999 2218 46 51 2433 2 100 320 1500 460 750 1950 83 <br /> VW 2 06!2811999 2219 4674 2456 5 700 <100 865 57 <0 2 1 302 76' <br /> 1VW 2 0912311999 22 18 4959 2741 4,300 300 12711 99 399 <br /> VW-22• 09123/1999 NA NA NA 4,0 450 1;�4 10 41$ 30 <br /> Nota <br /> TOC=Top of casing elevation,MSL= Mean Sea Level <br /> TPH-G-Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015M <br /> TPH D-Total Petroleum Hydrocarbons as Diesel by EPA Method 80 15M <br /> BTEX=Benzene Toluene Ethylberizene and Total Xylenes by EPA Method 8020 <br /> MTBE=Methyl Tertiary Butyl Ether by EPA Method 8020 <br /> NA-Not applicable <br /> <-Less than method detection limit <br /> --- =Not measured,sampled tested,or present <br /> Denotes duplicate sample taken <br /> All groundwater level measurements are presented in feet <br /> mgll-milligrams per liter <br /> pg11-micrograms per liter <br /> (6)=MTBE concentration its calculated by EPA Method 8260 <br /> L Denotes MTBE samples analyzed by EPA Method 9260B <br /> 'Denotes holding times were exceeded for benzene ethyl benzene and total xylenes Attached is a narrative from Associated labs explaining why the holding times for the samlpin were exceeded <br /> NR denotes Not Reported <br /> NU denotes laboratory analysts data not used due to exccedence of sample holding tunes <br /> All data pnor to 311199 was provided by the premous consultant(PS!) <br /> A'J'atter the laboratory result indicates that the compound was detected above the method detection limit,but below the laboratory reporting limit <br /> r <br /> sin �� Page 9 of 9 <br />