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' we .w>w ■� �■ w� w� � w. ww w� iw w� �w TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PHRSHING AVENUE,STOCKTON,CALIFORNIA Casing Depth Groundwater LPH Concentration /L Well Elevation to Water Elevation Thickness Ethyl- Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH- MTBE MW9 06/21/01 657 1614 -957 000 <0 5 <0 5 <0 5 <0 5 110 17 MW9 06/21/01 6 57 19* MW9 09/20/01 657 1717 -1060 000 -- -- -- -- "- -- MW9 12/04/01 6 52 1685 -1033 0 00 -- -- -- "" -- MW9 03/05/02 652 1600 -948 000 -- -- -- -- -- -- MW9 03/06/02 652 -- -- -- <0 5 <0 5 <0 5 <0 5 101 h 102 MW9 03/06/02 652 150* MW9 06/11/02 6 52 -- -- -- -- -- -- MW9 09/10/02 652 1772 -1120 000 -- -- -- -- MW9 12/18/02 652 1738 -1086 000 -- -- '- MW9 03/24/03 652 1696 -1044 000 -- -- -- -- -- -- MW9 03/25/03 652 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 h 28 3 MW9 03/25/03 6 52 29 2* MW9 06/11/03 652 17 10 -1058 000 -- -- -- -- -- _- MW9 09/17/03 652 1859 -1207 000 -- -- -- -- -- MW9 12/08/03 652 1843 -1191 000 -- -- -- -- -- -- MW9 03/02/04 652 1691 -1039 000 <0 5 <0 5 <0 5 <0 5 <50 h 1 7 MW9 03/02/04 6 52 <0 5* MW9 06/28/04 652 1814 -1162 000 -- -- -- -- -- -- MW9 09/27/04 6 52 1902 -1250 000 — -- -- -- — "- MW10 04/11/88 861 23 18 -1457 0 00 640 130 170 140 3,100 -- MW10 09/13/88 861 2585 -1724 000 4,800 130 340 240 7,700 -- MW10 11/16/88 8 61 2608 -1747 000 5,800 290 700 340 9,400 MW10 02/09/89 8 61 2570 -1709 000 7,500 450 220 320 8,800 -- MW10 05/31/89 861 2744 -18 83 000 11,000 320 1,600 800 24,000 -- MW10 08/17/89 861 2945 -20 84 000 12,000 2,100 3,100 2,500 35,000 -- MW 10 03/21/90 861 Not accessible -- -- -- -- -- -- MW10 05/17/90 861 Not accessible -- -- -- -- -- -- MW 10 06/27/90 861 3252 -2391 000 9,700 4,800 2,400 5,300 51,000 -- MW 10 09/25/90 861 33 95 -2534 000 13,000 9,900 2,700 8,900 71,000 -- MW 10 12/19/90 861 3379 -25 18 0 00 16,000 16,000 3,300 11,000 81,000 -- Page 21 of 56 g 1projects1739421mastct\wp1g490413942gw xls