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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6080 <br /> 85 E Louise Ave, Lathrop CA <br /> Top of Casing Depth to Water Level Ethyl- Total <br /> Well Date P! Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg1L) (pg1L) Uig/L) (pg1L) (pg1L) (pg1L) (mg1L) Comments <br /> MW-1 6/23/2000 P 1448 { 847 601 <50 -- <0 5 <0 5 <0 5 <0 5 454 -- <br /> 9/8/2000 NP 1448 { 953 495 613[1] — <0 5 <0 5 <0 5 129 210 -- <br /> 12/11/2000 NP 1448 { 997 451 387[2] -- <0 5 <0 5 <0 5 189 187 -- <br /> 3/22/2001 P 1448 { 891 55 7 84 6[2] -- 341 <05 <0 5 <0 5 145 — <br /> 6/25/2001 P 1448 j 937 511 <50 — <0 5 <0 5 <0 5 <0 5 970 — <br /> 9/24/2001 P 1448 1040 408 <50 -- <0 5 <05 <0 5 <0 5 29 - <br /> 12/3/2001 P 1448 10 32 416 <50 — <0 50 <0 50 <0 50 <0 50 150 — <br /> 3/18/2002 P 1448 j 894 554 <50 — <0 50 <0 50 <0 50 14 48 — <br /> 6/20/2002 P 1448 980 468 <50 -- <0 50 <0 50 <0 50 <0 50 18 — <br /> 9/9/2002 P 1448 j 999 449 <50 -- <0 5 <05 <0 5 <0 5 22 — <br /> 1216/2002 P 1448 1059 389 <50 — <0 5 <05 <0 5 <0 5 26 — <br /> 03/14/2003 P 1448 992 456 <50 -- <0 50 <0 50 <0 50 <0 50 052 1 25 <br /> 06/06/2003 P 1448 921 527 <50 — <0 50 <0 50 <0 50 <0 50 1 9 339 <br /> 09/15/2003 P 1448 1047 401 <50 -- <0 50 <0 50 <0 50 <0 50 <0 50 096 <br /> 12/04/2003 P 1448 1021 427 <50 — <0 50 <0 50 <0 50 <0 50 12 -- <br /> 03/05/2004 P 1448 981 467 <50 -- <0 50 <0 50 <0 50 <0 50 18 221 <br /> MW-2 6/23/2000 P 1363 773 590 <50 — <0 5 <0 5 <0 5 <0 5 166 -- <br /> 9/8/2000 NP 1363 867 496 <50 — <05 <0 5 <05 <05 102 12/1112000 NP 1363 914 449 <50 -- <05 <0 5 <0 5 <05 284 — <br /> 3/22/2001 P 1363 805 558 <50 — <0 5 <0 5 <05 <05 316 - <br /> 6/25/2001 P 1363 857 506 <50 — <0 5 <0 5 <05 <05 36 — <br /> 9/24/2001 P 1363 958 405 <50 -- <0 5 <0 5 <05 <0 5 56 — <br /> 12/3/2001 P 1363 949 414 <50 — <0 50 <0 50 <0 50 <0 50 58 -- <br /> 3/18/2002 P 1363 814 549 <50 — <0 50 <0 50 <0 50 <0 50 43 - <br /> 3/18/2002 P 1363 900 463 <50 -- 19 <0 50 <0 50 <0 50 56 <br /> 9/9/2002 P 1363 919 444 170 -- 14 <0 5 55 25 120 — <br /> 12/6/2002 P 1363 979 384 53 — <0 5 <0 5 <0 5 <0 5 <26 <br /> 03/14/2003 P 1363 915 448 120 -- <0 50 <0 50 <0 50 <0 50 82 149 <br /> 06/06/2003 P 1363 879 484 <50 - <0 50 <0 50 <0 50 <0 50 079 312 <br /> 09115/2003 P 1363 971 392 <50 -- <0 50 <0 50 <0 50 <0 50 78 089 <br /> 12/04/2003 P .1363 948 415 <50 -- 050 <0 50 <0 50 <0 50 99 -- <br /> 03/05/2004 P 1363 907 456 <50 — <0 50 <0 50 <0 50 <0 50 16 144 <br /> MW-3 6/23/2000 P 1400 811 589 <50 _ <0 5 <0 5 <0 5 <0 5 <2 0 <br /> { <br /> Report Date April 12,2004 Page 1 of 3 <br />