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WELL CONCENTRATIONS
<br /> Former Texaco Service Station
<br /> 440 W. Charter Way
<br /> Stockton, CA
<br /> MTBEDepth to GW SPH
<br /> Well ID Date TPPH B T E X MTBE 8020 8260 TOC Water Elevation Thickness
<br /> (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug1L) (ug/L) (MSL) (ft ) (MSL) (ft )
<br /> MW-9 06/15/1994 7,500 7,200 270 180 370 NA NA 999 3822 -2823 None
<br /> MW-9 09/22/1994 24,000 6,000 1,000 340 690 NA NA 999 3970 -2971 None
<br /> MW-9 12/01/1994 60,000 16,000 7,600 1,700 4,700 NA NA 999 3972 -2973 None
<br /> MW-9 02/16/1995 50,000 14,000 1 4,900 1,400 3,200 NA NA 999 3654 -2655 None
<br /> MW-9 05/17/1995 17,000 3,800 810 320 850 NA NA 999 3209 -2210 None
<br /> MW-9 08/1511995 43,000 12,000 4,300 940 3,000 <1000 NA 999 31 75 -21 76 None
<br /> MW-9 11/16/1995 19 000 8,000 680 260 610 NA NA 999 3202 -2203 None
<br /> MW-9 02/27/1996 20,000 9,700 300 190 480 NA NA 999 2950 -1951 None
<br /> MW-9 05/1511996 49,000 17,000 41200 1,200 3,400 NA NA 999 2725 -1726 None
<br /> MW-9 08/22/1996 17,000 7,600 170 160 450 <2000 NA 999 2817 -1818 None
<br /> MW-9 11/25/1996 18,000 8,800 580 170 560 <2000 NA 999 2800 -1801 None
<br /> MW-9 02/24/1997 37,000 12,000 2,200 550 1,900 <2000 NA 999 2447 -1448 None
<br /> MW-9 05/19/1997 15,000 14,000 350 240 750 <300 NA 999 2420 -1421 None
<br /> MW-9 08/21/1997 38,000 17,000 310 250 630 <600 NA 999 2515 -1516 None
<br /> MW-9 11/18/1997 1,800 7,300 150 91 280 560 NA 999 2614 -1615 None
<br /> MW-9 02/0911998 34,000 15 000 780 310 1,200 <600 NA 999 2396 -1397 None
<br /> MW-9 05/21/1998 58,000 7,900 1,000 430 1,100 620 NA 999 1967 -968 None
<br /> MW-9 08/11/1998 12,000 3,900 94 51 140 150 NA 999 1963 -964 None
<br /> MW-9 11/09/1998 12,000 3,500 140 64 130 <25 NA 999 2090 -1091 None
<br /> MW-9 02/17/1999 6,100 2,700 248 <5 00 100 467 NA 1 999 2053 -1054 None
<br /> MW-9 05/25/1999 11,000 31800 50 56 100 <250 NA 999 1 1937 -938 None
<br /> MW-9 1 08/18/1999 1,110 496 <5 00 <5 00 <5 00 126 NA 999 2013 1 -1014 1 None
<br /> MW-10 05/10/1991 NA NA NA NA NA NA NA 1083 NA NA NA
<br /> MW-10 02105/1992 NA NA NA NA NA NA NA 1083 NA NA NA
<br /> MW-10 05/1511992 7,100 2,000 ND 34 230 NA NA 1083 4073 -2989 None
<br /> MW-10 10/15/1992 NA NA NA NA NA NA NA 1083 4331 -3247 None
<br /> MW-10 12117/1992 21 000 6,700 27 18 210 NA NA 1083 4316 -3232 None
<br /> Page 11
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