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<br /> Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No 2186
<br /> 3212 N California, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date PI Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg1L) (yg1L) (pgIL) (NgIL) (ug1L) W/L) (ugIL) (mglL) Comments
<br /> MW-1 9/25/1995 1465 5805 -4340 20,000 -- 780 2,000 690 4100 NA - No FP,No S
<br /> 10/23/1995 1465 5789 -4324 20 000 -- 590 1,100 600 3,600 NA - No FP, No S
<br /> 12/22/1995 -- 1465 5378 -3913 730 - 35 <1 0[2] 13 13 NA - No FP,No S
<br /> 2/16/1996 -- 1465 5013 -3548 1,200 - 22 <1 0[21 51 24 NA No FP, No S
<br /> 5/23/1996 - 1465 4535 -3070 760 - 90 10 22 50 <50 - No FP No S
<br /> 9/19/1996 - 1465 5363 -3898 10 000 - 480 570 520 700 <50' -- No FP,No S
<br /> 11/27/1996 - 1465 5077 -3612 19,000 -- 700 1,800 820 2,200 <100' -- No FP,No S
<br /> 3/21/1997 - 1465 4206 -2741 5 300 -- 260 210 200 440 <30' -- No FP No S
<br /> 5/22/1997 -- 1465 4389 -2924 25,000 - 920 1,900 1,400 3,500 <120" -- No FP, No S
<br /> 8/2011997 - 1465 4983 -3518 31,000 - 1,000 2,800 1,300 4,000 <500" - No FP,No S
<br /> 11/20/1997 - 1465 4907 -3442 24,000 - 830 1,900 1,100 3,600 <1 000'" -- No FP,No S
<br /> 2/1711998 - 1465 4432 -2967 19,000 - 680 990 980 3,200 <100'" - No FP,No S
<br /> 6/24/1998 -- 1465 3579 -21 14 505 - 275 <2 5 602 973 <25 -- No FP No S
<br /> 9/21/1998 - 1465 3935 -2470 18,900 -- 792 1,410 1,130 3,690 <125 -- No FP,No S
<br /> 12/14/1998 14 65 3734 -2269 13,800 - 613 449 896 2,800 <i00 - No FP, No S
<br /> 12/14/1998 -- 1465 3734 -2269 7,170 - 424 161 527 848 <100 - No FP,No S,[D]
<br /> 3/31/1999 - 1465 3414 -1949 817 -- 432 <0 5 <0 5 <0 5 <50 - No FP, No S
<br /> 6/11/1999 - 1465 3422 -1957 7,310 -- 397 162 543 1 500
<br /> <50 - No FP,No S
<br /> 9/10/1999 1465 3841 -2376 22,800 - 941 1 180 1,410 4,450 2 590 - No FP No S
<br /> 12/3/1999 - 1465 3834 -2369 15,400 -- 552 155 907 2,680 517 -- No FP,No S
<br /> 4/3/2000 - 1465 3500 1 -2035 6,940 - 1 534 <20 518 1,260 334 - No FP,No S
<br /> 6/22/2000 - 1465 3513 -2048 14,700 -- 675 144 744 2,500 114[4] -- No FP,No S
<br /> 9/27/2000 -- 14 65 4046 -2581 1,190 -- 531 202 843 2,140 4,500[41 -- No FP,No S
<br /> 10/19/2000 -- 1465 4025 -2560 NA - NA NA NA NA NA -- No FP No S
<br /> 12120/2000 -- 1465 3833 -2368 14,600[5] - 704 111 741 2,870 2,000 - No FP,No S
<br /> 3/16/2001 1465 3725 -2260 1 16,800[5] 1,210 802 848 4,230 2,190[4] -- No FP, No S
<br /> 6/21/2001F- 1 4002 -2537 24,000[5] -- 1,000 380 980 4,100 28,000[4] - No FP, No S
<br /> 9/13/2001 4582 -31 17 38,000 2,200 2,200 2,100 8,800 4,500[41 - No FP,No S
<br /> 12/11/2001 4305 -2840 13,000 -- 920 430 780 3,100 8 800[4] -- No FP No S
<br /> 3/14/2002 3999 -2534 6,800 -- 620 120 420 1,500 4,700[4] No FP,No S
<br /> 6/19/2002 -- 1465 4230 -2765 12,000 - 430 320 310 1,200 17 000[4] - No FP,No S
<br /> 9/12/2002 -- 1465 4918 -3453 64,000 -- 2,900 4,100 3,100 14,000 3 100[4] - No FP, No S
<br /> 12/3/2002 - 14 65 46 24 -31 59 30,000 - 1,700 950 1,500 5,700 3100 -- No FP No S
<br /> ReportDate August 2,2004 Page 1 of 11
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