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Table 1 <br /> GROUNDWATER ELEVATIONS AND SAMPLE ANALYTICAL RESULTS <br /> Ruiz Grocery <br /> 4491 West Durham Ferry Road <br /> Tracy,Calitornia <br /> MTBE MTBE Fuel Oxys 1,2-DCA,EDB <br /> Sample Collection TOC DTW GWE SPH TPHg B T E x 8020 8260 8260 8260 <br /> No Date (feet) (feet) (feet) (feet) (pg/L) WIL) (pg/L) (µg/L) (pg/L) (pg(L) (pg/L) WIL) (P&L <br /> MW-1 917/91 9844 946 8898 000 140 23 1 3 <0 5 35 --- --- --- --- <br /> 10/13/91 9844 1081 8763 000 --- --- --- --- --- --- --- --- --- <br /> 10/20/91 9844 1115 8729 000 --- --- --- --- --- --- --- --- --- <br /> 4/9192 9844 1493 8353 003 48,000 430 4,400 1,400 9,200 --- --- --- --- <br /> 7/10/92 9844 1288 8556 000 45,000 57 1,200 740 7,300 --- --- --- --- <br /> 1/7/93 9844 1632 8220 0 1 l --- --- --- --- --- --- --- --- <br /> 4/7193 9844 1558 8294 Oil --- --- --- --- - - --- --- --- --- <br /> 12/30/93 9844 1498 8360 018 --- --- --- --- --- --- --- --- - - <br /> 319/94 9844 1598 8259 017 --- --- --- --- --- --- --- --- --- <br /> 8/1/94 9844 1100 8744 000 --- --- --- --- --- --- --- --- --- <br /> 317195 9844 1676 8180 016 --- --- --- --- --- --- --- --- --- <br /> 10/19/95 9844 1442 8407 007 --- --- --- --- --- --- --- <br /> 12119/95 9844 1590 8262 010 --- --- --- --- --- --- --- <br /> 1/5/96(1) <br /> --1/5/96(1) 9844 1613 8233 003 6,600 <6 2 <6 2 <6 2 920 66 --- --- --- <br /> 7/2/96 9844 1455 8389 droplets --- --- --- --- --- --- --- --- --- <br /> 10/18/96 9844 1463 8381 droplets --- --- --- --- --- --- --- --- --- <br /> 1122/97 9844 1660 8184 sheen 79,000 870 2,600 4,100 27,000 <500 --- --- --- <br /> 4122/97 9844 1569 8275 droplets 38,000 370 660 1,800 11,000 <50 --- --- --- <br /> 7124/97 9844 1277 8567 sheen 59,000 220 370 1,500 12,000 <100 --- --- -- <br /> 11/14/97 9844 1535 8309 sheen 51,000 1,100 560 2,200 17,000 <100 - --- --- <br /> 1/22198 9844 1629 82 15 sheen 64,100 380 330 1,700 12,200 <250 --- --- --- <br /> 5/12/98 9844 1545 --- sheen 89,000 1,100 250 1,500 16,000 --- 77 <5-20 --- <br /> 8/20/98 9892 1282 8610 000 69,000 210 57 590 9,300 --- <50 <50-200 --- <br /> 1114198 9992 1420 8472 sheen 64,000 340 850 520 7,900 --- <500 <500-2,000 --- <br /> 3/3/99 9892 1666 8226 000 12,000 34 18 76 830 <100 --- --- --- <br /> 5/13/99 9992 1729 8163 000 1,500 <0 5 14 10 13 162 --- --- --- <br /> 8/13/99 9892 -1403 -8489 000 1,900 23 100 79 290 <50 --- --- --- <br /> 1112/99 9892 1690 8202 000 690 13 <0 5 27 83 65 --- --- --- <br /> 217100 9892 1626 8266 000 550 26 <0 5 32 5 1 <5 63 <5-20 <5 <br /> 518/00 9892 1632 8260 000 360 084 070 1 6 37 --- 58 --- --- <br /> 7/24/00 9892 1587 8305 000 220 055 <05 30 26 --- <5 <5-20 <5 <br /> Page I of 8 <br />