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TABLE 4 <br /> ANALYTICAL RESULTS OF HISTORICAL GROUND WATER SAMPLES <br /> - TPH and BTEX <br /> West Clay Property } <br /> 639 West Clay Street, Stockton, California <br /> - J _ (Lg/l) <br /> - Well ID <br /> Depth to- TPH-9 TPH as - - _ Ethyl- <br /> -(Screen -Date=m - - MTBE Benzene -.Toluene Xylenes <br /> 6und-wate Gasoline Diesel _ benzene <br /> interval) - __ a _ <br /> Mw-1 04/04/94 _ 3630 18,000 3,000 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 <05 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 2355 820 200 <5 - 160- 60 47 - 35 <br /> M 02/26/98 1874 550 93 <5 150 11 3.5 47 _ <br /> 08/31/98 1776 24,000 2,100 <200 5,200 230 `1,400 1,200 <br /> 02/09/99 1718 1,400- 71 ' <8 28 38 64 -23 <br /> 05/28/99 1730 _ 3,900 650 <10 1,100 56 290 260 <br /> 10/28/99 } 19_26 1,900 470 <50 480 9.3 130 42 <br /> r 01/25/00 19 06 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 /> y 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 5.3 64 12 <br /> - - 05/28/02 1905 5,400 580 <50 1,000 23 350_ 140 V i� <br /> 09/03/02 2043 7,400 1,300 <300 1,500 29 95 230 } <br /> 12/26/02 2056 470 310 NA <05 <05 <0 5 0 69 , - <br /> 03/14/03 1 1996 8,600 860 NA 1,300 60 700 310 <br /> t Advanced GeoEnvironmental,Inc <br />