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Table 1 Groundwater Elevation Analytical Data P*f 27 Chevron Bulk Fuet Tal 61001621 22888 South Kasson Road Banta California Well Groundwater Depth SPH SPH Total SPH TPH as Eth YI- Total TPH as Total Diss Well Date Elevation Elevation To Water Thickness Removed Removed Gasoline Benzene Toluene Benzene Xylenes Diesel Lead MtBE Lead Number Gauged (feet MSL) (feet MSL) (feet TOC) (feet) (gallons) (gallons) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) MW-3 08/21/85 - -- -- ~ - - 4870 4050 1270 1380 884 5230 - - 09103!87 10113/88 - - - - - 740,000 4200 23,000 51,000 19,000 66,000 - - - 02/22/89 2039 1061 988 - - - 15,000 810 170 2600 900 -- ~ 04/14/89 1094 945 - - - 2,700 510 39 370 110 5,300 - - - 07/18/89 - - - - 3 400 440 38 270 150 7700 - - - 08/20/89 1335 704 - - - - 10/05/89 1328 711 - - - 6200 860 79 470 ND 2100 - - 01/17/90 1095 944 - -- - 3,600 290 31 280 140 6,500 - - 04/16/90 1156 883 - - - 4 900 580 50 370 230 14000 -- - 07/18/90 - - -- - -- 19000 2300 170 1,600 870 33,000 - -- - 10/18/90 - - - - 10 000 280 60 670 470 25000 - - - 01/14/91 - - - - - 13,000 380 60 720 1,200 24,000 - - - 04/04/91 1150 899 125 - - - - ~ - - 04/10/91 07/10/91 1429 612 019 06/01/92 1335 704 002 08/12/92 1302 737 002 - 11/02/92 1150 889 002 - 02/26/93 1557 482 002 - 06102-03193 1275 770 075 -- - 09/02-03193 1294 745 002 -- - - - - - 12103-06193 1156 883 - -- - 7,000 550 23 160 76 30,000 - - - 03101-02!94 1163 876 002 - - - - 06/01/94 1092 947 002 - -- 08116-17194 1010 1029 003 - - 11/21/94 1035 1004 003 001 0011 - -- - 02/23/95 1267 782 - -- 0 01 6,500 580 <50 290 440 40000 <50 - - 05/30/95 1236 803 - -- 001 9,200 1100 180 370 510 47,000 <50 - - 08/07/95 1240 799 - - 001 9 300 1300 <25 320 280 46000 97 11/02/95 1253 786 - -- 001 16 000 620 <25 490 410 67,000 99 - - 02/01/96 1241 798 - - 001 3 400 550 <10 170 71 13000 82 05/01/96 1265 774 - - 001 <25,000 930 <250 <250 <250 67,000 - <1250 <5 0 08108196 12 25 8 14 - - 001 2,300 280 <10 110 <10 22000 250 <5 0 11/04/96 1164 875 - - 001 7 900 -660 <20 230 <20 23,000 - 140 - 02/05/97 1624 416 - - 001 1,500 550 <50 60 6 4600 - 66 - 05/12/97 1323 716 - -- 0 01 110 000 620 <50 650 210 54,000 - <500 - 08/12/97 12 24 8115 - - 001 6,200 490 6 220 40 29000 320 - 11104/97 1135 904 - -- 001 9 300 470 <0 50 260 44 45,000 - 410 - 02/10/98 1569 470 - -- 0 01 21 000 870 <0 50 650 120 37,000 - <5 0 05/26/98 1370 669 - - 001 11,300 604 <50 0 376 564 1,510 - 946 08/26/98 1264 775 - -- 498 01 16,500 705 <0 50 498 877 38 3001177002 860l6501 ~ 11/19/98 1155 884 -- - 001 2,670 662 <0 50 140 178 18002 - 3011174' 02/22/99 1240 799 - -- ON 6 490 649 <20 350 343 2600a - 805/594° April 6,1999 920-002 2E11gr99'