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� I <br /> TABLE 4 <br /> _ ANALYTICAL RESULTS OF HISTORICAL GROUND WATER SAMPLES - TPH AND BTEX <br /> y West Clay Property _ <br /> 639 West Clay Street, Stockton, California <br /> Well ID Date Depth to TPH as- TPH as MTBE Benzene Toluene , Ethyl Xylenes <br /> Screen interval ground water Gasoline D►esel benzene ` <br /> MW-1 04/04/94 3630 18,000 3,000K NA 2,500 150 630 1,200 <br /> (40-60) 12/16/94 3767 NS NS NS NS NS NS NS <br /> 03/31/95 3089 NS NS NS NS NS NS NS <br /> 10/31/95 2924 400 NA NA 460 <0 5 15 13 <br /> ' 05/06/96 2482 NS NS NS NS NS NS NS <br /> 05/27/97 2185 500 130 <5 80 51 19 44 <br /> - 11/17/97 23 55 820 200 <5 160 60 47 35 <br /> 02/26/98 1874 550 93 <5 150 1 1 35 47 <br /> 08/31/98 1776 24,000 2,100 <200 5,200 230 1,400 1,200 <br /> 02/09/99 17 18 1,400 71 <8 28 38 64 23 <br /> 05/28/99 1730 3,900 650 <10 1,100 56 290 260 <br /> F 10/28/99 1926 1,900 470 <50 480 93 130 42+ <br /> 01/25/00 1906 3,100 320 <5 860 15 220 45 } <br /> 07/13/00 - 1755 3,100 340 <10 650 - 14 210 87 <br /> 12/18/00 1893 1,800 280 <10 310 16 120 87 <br /> 03/13/01 1804 820 90 <15 140 18 39 29 <br /> 05/30/01 1846- - 6,700 700 <30 1,600 -43 -'530 190 <br /> _ 08/28/01 1979 9,900 1,300 <300 2,300 69 820 240 <br /> 11/28/01 2043 11,000 2,400 <230 2,300 - 62 940 260 <br /> 02/27/02 1876 990 170 <10 160 53 ' 60 12 <br /> 05/28/02 1905 - 5,400 580 <50 1,000 23 350 140 <br /> 09/03/02 2043- 7,400 1,300 <300 1,500 29 ' 95 - 230 <br /> 12/26/02 -12056 470 310 NA <0 5 <0 5 <0 5 069 <br /> 03/14/03 1996 8,600_ 860 NA 1,300 60 700 310 1 - <br /> Advanced GeoEnvironmental,Inc <br /> r s <br />