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! i i TABLE 1-SUMMARY OF RESULTS OF GROUNDWATER MONITORING WELL DATE OF CASING DEPTH TO GROUNDWATER TPH-G TPH-D TPH B T E X MTBE HVOC DO LAB ID SAMPLING/ ELEVATION (a) WATER ELEVATION (b) (ug/1) (ugll) (ug/1) (ug11) (ug/1) (ug/1) (ug/1) (ugll) (ug/1) (ppm) MONITORING (Feet) (Feet) (Feet) MW-7 04/25/94 446 1759 -1313 76 --- 1 0 ND<O 5 ND<O 5 20 --- --- 47 PACE MW-7 07/28/94 446 1806 -1360 67 --- 68 ND<O 5 ND<O 5 ND<O 5 --- --- 46 PACE MW-7 12109/94 446 1878 -1432 57 -- --- 51 05 ND<O 5 ND<1 – --- 47 PACE MW-7 03/03/95 446 1740 -1294 ND<50 --- – 58 ND<O 50 ND<0 50 ND<1 0 --- --- 43 ATf MW-7 04/12/95 446 16 29 -1183 ND<50 --- --- 46 ND<O 50 ND<O 50 ND<1 0 -- --- 78 ATI MW-7 07/20/95 446 1626 -1180 ND<50 --- -- 3 1 ND<O 50 ND<O 50 ND<1 0 -- --- 53 ATI MW-7 11/02195 446 1710 -1264 ND<50 -- --- 34 ND<0 5 ND<O 5 ND<1 0 ND<5 0 --- 42 ATI MW-7 01/16/96 446 1644 -11 98 ND<50 --- --- 46 ND<O 50 ND<O 50 ND<1 0 ND<5 0 --- --- ATI MW-7 04/22/96 446 1427 -981 ND<50 --- --- 20 ND<1 ND<1 ND<1 ND<10 -- --- SPL MW-7 07/12/96 446 1467 -1021 ND<50 --- — ND<O 5 ND<1 ND<1 ND<1 ND<10 -- 1 7 SPL MW-7 11/14/96 446 1560 -1114 N0<50 - -- ND<O 5 ND<1 0 ND<1 0 ND<1 0 ND<10 --- 32 SPL MW-7 03/11/97 446 1255 -809 - ___ ___ ___ ___ ___ MW-7 05/22/97 446 13 19 -873 - – - – – -- --- --- --- --- MW-7 08/06/97 446 1399 -953 – - -- --- -- – r- ___ MW-7 09/22/97 446 1406 -960 -- -- -- -- -- --- - -- _- ___ MW-7 01/07/98 446 1420 -974 ND<50 – -- ND<O 5 ND<1 0 ND<1 0 ND<1 0 ND<10 -- 63 SPL MW-7 07/01/98 446 1063 -617 --- --- -- --- --- --- --- --- --- --_ --- MW-7 09/18/98 446 1230 -784 -- --- -- --- --- --- --- --- --- MW-7 01/19/99 446 1227 -781 ND<50 --- - ND<1 0 ND<1 0 ND<1 0 ND<1 0 10 --- --- SPL MW-7 10/14/99 446 1316 -870 ND<50 -- -- ND<1 0 ND<1 0 ND<1 0 ND<1 0 37 -- --- SPL MW-7 01/20/00 446 1298 -852 ND<50 --- ND<O 5 ND<O 5 20 069 58 – --- PACE MW-7 (k) 05/04100 --- (1) 980 --- -- -- — – --- --- --- -- – MW-7 05109100 --- 978 --- 59 --- --- ND<O 5 ND<O 5 ND<O 5 ND<O 5 35 – – PACE MW-7 07/14/00 390 1193 -803 ND<50 --- – ND<O 5 ND<O 5 ND<O 5 ND<O 5 85 --- PACE MW-7 10/27/00 390 1200 -810 ND<50 --- -- ND<0 5 ND<O 5 ND<O 5 ND<O 5 45 – --- PACE MW-7 01/19/01 390 1284 -894 ND<50 --- ND<O 5 ND<O 5 0 888 ND<O 5 193 --- --- PACE MW-8 07/14/00 390 1123 -733 55 --- --- 086 ND<O 5 ND<O 5 085 230 --- --- PACE MW-8 10/27/00 390 1207 -817 ND<50 --- --- ND<O 5 ND<O 5 ND<O 5 ND<O 5 17 --- - PACE MW-8 01/19/01 390 1170 -780 ND<50 - --- ND<O 5 ND<O 5 ND<O 5 ND<O 5 765 --- – PACE MW-9 07/14/00 519 1235 -716 ND<50 -- -- ND<O 5 ND<0 5 ND<O 5 ND<O 5 84 --- --- PACE MW-9 10/27/00 519 1324 -805 ND<50 – – ND<O 5 ND<O 5 ND<O 5 ND<O 5 43 --- --- PACE MW-9 01/19/01 519 1303 -784 71 --- ND<O 5 ND<O 5 ND<O 5 ND<O 5 806 --- --- PACE Blaine Tech Services Inc, Report 010119-K-1,BP Oil 11193 at 3202 W Hammer Lane,Stockton,California Page 8