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a, . Groundwater Elevation and Analytical Data 76(Former BP)Service Station No 11193 3202 W Hammer Lane, Stockton, California Well Date of P1NP Well Depth to Groundwater Groundwater TPHg TPHd TPH B T E X MtBE VOCs[1] DO Number Sampling Elevation Water Elevation Elevation (ug1L) (ug1L) (ug/l.) (ug/L) (ug/L) (ug1L) (ug/L) (ug1L) (ug/L) (ppm) (Feet) (Feet) (Feet) Change (Feet) MW-1R 4/23/2002 453 1212 -759 -- 410 -- – ND<0 5 ND<0 5 ND<0 5 ND<1 0 269 – – (cont} 7/29/2002 P 453 1313 -860 -1 01 88 --- – <05 <0 5 <0 5 <1 391 ND[4) – 9/11/2002 P 453 1381 -928 -068 150 – — ND<2 5 ND<2 5 ND<2 5 ND<2 5 270 — — 4/7/2003 P 453 1310 -857 071 90 16] -- — ND<0 5 ND<0 5 ND<0 5 ND<0 5 73 — — 6/2712003 P 453 1343 -890 -033 130 --- — ND<0 5 ND<0 5 ND<0 5 ND<0 5 88 – 9/2/2003 P 453 1432 -979 -089 140[7] -- — ND<0 5 ND<0 5 ND<0 5 ND<1 0 54 12/1512003 P 453 1452 -999 -020 ND<50 -- — ND<0 5 ND<0 5 ND<0 5 ND<1 0 27 –3189/2004 P 453 1308 -855 144 ND<50 -- — ND<0 5 ND<0 5 ND<0 5 ND<1 0 53 — — 6/8/2004 P 453 1388 -935 -080 ND<50 -- – ND<0 5 ND<0 5 ND<0 5 ND<1 0 11 — — 6/11/2004 453 1365 -912 -057 — --- -- --- --- -- --- — — 8/24/2004 P 453 1440 -987 -075 ND<50 --- --- ND<0 5 ND<0 5 ND<0 5 ND<1 0 34 --- -- MW-2R 7/14/2000 507 1240 -733 -- 2 100 --- -- 41 30 15 61 31,000 – — 10/27/2000 507 1308 -801 -068 3 900 --- — 82 27 31 15 110,000 1/19/2001 507 1296 -789 012 29,000 – -- 26 355 ND<25 83 49,200 -- — 4/23/2001 507 1200 -693 096 11,000 – --- 14 1 38 251 815 12,400 --- -- 7l2712001 507 1311 -804 -1 11 24,000 --- --- 13 ND<5 0 ND<5 0 ND<15 31 800 -- -- 11/1/2001 507 1418 -911 -107 9,100 — -- 326 ND<0 5 ND<0 5 ND<1 5 11,100 — 1128/2002 507 1299 -792 1 19 9 400 — --- 23 ND<12 5 139 451 11,800 --- 4/23/2002 507 1262 -755 037 25,000 --- -- 52 ND<12 5 172 595 21,300 – — 7/29/2002 P 507 1287 -780 -025 -- – --- 23 617 689 22 9,590 1 7[5] -- 9111l2002 P 507 1437 -930 -1 50 1,600 --- --- 34 ND<10 ND<10 24 11,000 -- V7/2003 P 507 1328 -821 1 09 340[6] -- --_ ND<2 5 ND<2 5 ND<2 5 ND<2 5 160 --- --- 6/27/2003 P 507 1400 -893 -072 ND<500 -- -- ND<5 0 ND<5 0 ND<5 0 ND<5 0 340 --- -- 9/2/2003 P 507 1488 -981 -088 2 500[7] --- --- ND<25 ND<25 ND<25 ND<50 740 — — 12/15/2003 P 507 1509 -1002 -021 ND<5,000 – -- ND<50 ND<50 ND<50 ND<100 670 — – 318,912004 P 507 1362 -855 147 ND<250 — -- ND<2 5 ND<2 5 ND<2 5 ND<5 0 53 — --- 6/8/2004 P 507 1484 -977 -122 ND<2,500 – - ND<25 ND<25 ND<25 ND<50 100 --- --- 6/11/2004 507 1410 -903 -048 — - --- --- -- — — _. — — 812412004 P 507 1496 -989 -086 ND<2,500 --- -- ND<25 ND<25 ND<25 ND<50 160 — --- VW-1 10/14/1999 -- 1363 — -- 340,000 -- -- 650 ND<50 81 ND<50 440,000 --- - 1120/2000 - --- --- - - - - -- --- -- --- --- - - 5/4/2000 – 1058 --- --- 2,800 -- – 84 089 47 099 75,000 -- – 7114/2000 - 11 55 --- --- 3,400 — – 84 20 99 32 250,000 – -- 10/27/2000 - 1235 4,900 — -- 55 60 20 23 150,000 --- 111912001 — 1202 – – 58 000 --- -- 374 469 159 118 85,900 — -- I IConocoPhrlhpsJosco Marketmgl111931Tables111193 30MR04 xls Page 11 of 13