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Table 1
<br /> Groundwater Elevation and Analytical Data
<br /> ARCO Service Station No 2186
<br /> 3212 N California Street, Stockton, CA
<br /> TOC Depth to Water Level Ethyl- Total
<br /> Well Date Pl Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO
<br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) MIL) (pg/L) (pg[L) MIL) (pg1L) (pg/L) (pg/L) (mg/L) Comments
<br /> MW-4 3/31/1999 — 1383 3385 -2002 <50 — <0 5 <05 <0 5 <0 5 796 — No FP,No S
<br /> 6/11/1999 -- 1383 3347 -1964 194 — <0 5 <05 <0 5 <0 5 41 -- No FP,No S
<br /> 9/10/1999 — 1383 3772 -2389 213 — 148 <05 <0 5 <0 5 1,100 — No FP No S
<br /> 12/3/1999 -- 1383 3764 -2381 641 -- <0 5 <05 <05 <0 5 731 -- No FP,No S
<br /> 4/3/2000 -- 13 83 3430 -2047 <50 — <0 5 <05 <0 5 <0 5 166 -- No FP,No S
<br /> 6/22/2000 -- 1383 3437 -2054 232 — <2 0 <2 0 <2 0 1 <2 0 2,070[4] — No FP,No S
<br /> 9/27/2000 -- 1383 3980 -2597 185 — 16 <0 5 0 542 117 6,590[4] — No FP,No S
<br /> 10/19/2000 — 1383 3959 -2576 NA — NA NA NA NA NA — Not observed
<br /> 12/20/2000 — 1383 3768 -2385 <50 -- <05 <0 5 <0 5 <0 5 1,170 — No FP,No S
<br /> 3/16/2001 -- 1383 3650 -2267 <50 -- <0 5 <0 5 <0 5 <05 481[4] -- No FP,No S
<br /> 6/21/2001 -- 1383 3937 -2554 <50 — <0 5 <0 5 <0 5 <0 5 590[4] — No FP,No S
<br /> 9/13/2001 — 1383 4512 -3129 150 -- <05 <0 5 <0 5 <05 7,600[4] — No FP,No S
<br /> 12/11/2001 -- 13 83 4243 -2860 84[7] -- <0 50 <0 50 <0 50 <0 50 5,600[4] -- No FP,No S
<br /> 3/14/2002 -- 1383 3926 -2543 88[7] — <0 50 <0 50 <0 50 <0 50 4,900[4] — No FP,No S
<br /> 6/19/2002 -- 1383 4146 -2763 540[7] — <0 50 <0 50 <0 50 <0 50 2,900[4] — No FP,No S
<br /> 9/12/2002 — 1383 4862 -3479 <50,000 -- <500 <500 <500 <500 16,000 -- No FP,No S
<br /> 12/3/2002 -- 1383 4554 -31 71 <50,000 -- <500 <500 <500 <500 6,600 -- No FP,No S
<br /> 03/1112003 P 1383 4578 -3195 <25,000 -- <250 <250 <250 <250 4,200[4] 054
<br /> 06/09/2003 P 1383 4277 -2894 <500 <50 <50 <5 0 <50 3,200[4] 395
<br /> 09/16/2003 P 1383 5064 -3681 2,700 R -- <250 <250 <250 <250 6,500[4] 231
<br /> 12J11/2003 P 1383 4563 -31 80 3 000 R — <50 <50 <50 <50 6,500[4]J —
<br /> 03/10/2004 P 1383 4593 -3210 1,900 -- <100 <100 <100 <100 6,900[4]J 143
<br /> 06/17/2004 P 1383 4739 -3356 2,600 -- <250 <250 <250 <250 10,000[4] 170
<br /> 09/23/2004 P 1383 5370 -3987 840 — <25 <25 <25 <25 2,500[4] 140
<br /> 12/21/2004 P 1383 4807 -3424 1,100 — <120 <120 <120 <120 2,800[4] 149
<br /> 03/30/2005 P 1383 4397 -3014 <50 -- <0 50 <0 50 <0 50 <0 50 27[4] 447
<br /> 06/13/2005 P 1 1383 1 4195 -2812 <Soo — <50 <50 <5,0 <50 280[4] 1 11
<br /> MW-5 9/13/2001 — 1276 4513 -3237 <50 -- <0 5 <05 <0 5 <05 <2 0[4] -- INo FP,No S
<br /> 12/11/2001 — 1276 4180 -2904 <50 — <0 50 <0 50 <0 50 <0 50 <2 0[4] -- No FP,No S
<br /> 3/14/2002 — 1276 3870 -2594 <50 — <0 50 <0 50 <0 50 <0 50 <0 50[4] -- No FP,No S
<br /> 6/19/2002 — 1276 4157 -2881 <50 -- <0 50 <0 50 <0 50 <050 <0 50[4] — No FP,No S
<br /> 9/12/2002 — 1276 4874 -3598 <50 — <0 5 <05 <0 5 <0 5 <0 5 -- No FP,No S
<br /> 12/3/2002 — 1276 4505 -3229 81 -- <0 5 <05 <0 5 18 <0 5 — No FP,No S
<br /> Repoff Date July 21,2005 Page 5 of f3
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