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<br /> _ ANALYTICAL RESULTS OF GROUND WATER SAMPLES
<br /> SIERRA LUMBER
<br /> 375 West Hazelton Avenue, Stockton, California
<br /> Ground Screen Ethyl- MTBE MTBE
<br /> Well 1 D Date Water interval TPH-g Benzene Toluene benzene Xylenes 8020 8260 D1PE TAME ETBE TBA
<br /> Depth ft bs ) - -
<br /> 08-25-98 1965 25,000 420 2,700 860 4,700 ND<200 ND<10 ND<10 ND<10 ND<10 ND<450
<br /> 09-16-98 1942 12,000 310 240 530 2,600 ND<20 ND<10 ND<10 ND<10 ND<10 ND<50
<br /> 12-10-98 2006 2,900 110 15 140 120 ND<20 1 5 1 1 ND<l ND<1 ND<5
<br /> 03-15-99 1850 3,100 38 42 88 31 ND<30 12 14 ND<1 ND<1 ND<5
<br /> 06-22-99 1884 50,000' 4,900 13,000 1,700 8,700 ND<200 41 10 ND<10 ND<10 ND<50
<br /> 09-10-99 1989 82,0001 7,300 16,000 2,500 13,000 ND<200 110 ND<55 ND<55 ND<55 ND<280
<br /> 04-28-00 1803 64,0001 5,200 79500 29200 11,000 ND<200 90 ND<20 ND<20 ND<20 ND<100
<br /> 08-03-00 1892 81,0001 5,900 11,000 2,500 12,000 ND<100 ND<100 ND<100 ND<100 ND<100 ND<500
<br /> 01-18-01 2002 66,000 5,000 99400 29300 9,400 ND<200 33 ND<5 ND<5 ND<5 ND<25
<br /> 04-23-01 1991 69,0001 4,700 11,000 2,400 11,000 ND<200 ND<50 ND<50 ND<50 ND<50 NIK250
<br /> MW-413 07-24-01 2043 61,0001 4,100 69500 2,000 7,800 ND<200 25 ND<20 ND<20 ND<20 ND<100
<br /> 11-01-01 2171 45 to 50 459000` 4,000 1,500 2,100 5,600 ND<200 35 ND<10 ND<10 ND<10 ND<50
<br /> 02-19-02 1855 34,000` 4,100 47 1,900 2,100 ND<50 28 62 ND<5 ND<5 ND<25
<br /> 05-30-02 2022 16,000 2,800 19 1,300 160 ND<100
<br /> 08-20-02 2185 290` 66 ND<0 5 29 ND<0 5 - 24 ND<0 5 ND<0 5 ND<0 5 ND<5
<br /> 12-03-02 2238 , 160' 30 061 24 ND<0 5 ND<5 27 052 ND<0 5 ND<0 5 ND<5
<br /> 03-17-03 21 33 ND<50 073 ND<0 5 065 ND<0 5 ND<5 15 ND<0 5 ND<0 5 ND<0 5 ND<5
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<br /> 06-17-03 2068 120 1 1 ND<0 5 ND<0 5 ND<0 5 2 27 ND<0 5 ND<0 5 ND<0 5 ND<20
<br /> 09-18-03 2257 NIK50 N1<0 5 ND<0 5 ND<0 5 ND<0 5 - ND<1 ND<I ND<1 ND<I ND<10
<br /> 12-29-03 2146 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<20
<br /> 01-28-04 2122 1,400 ND<2 5 ND<2 5 27 11 ND<2 5 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<20
<br /> 07-02-04 21 33 t 500 ND<0 5 ND<0 5 ND<0 5 36 ND<l ND<I ND<I ND<1 ND<10
<br /> 09-03-04 2247 280 ND<0 5 ND<0 5 ND<0 5 144 - ND<1 ND<I ND<I ND<I ND<10
<br /> 08-25-98 16 17 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<1 ND<1 ND<l ND<I ND<5
<br /> 09-16-98 1659 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<1 ND<1 ND<I ND<I ND<5
<br /> 12-10-98 17 16 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<1 ND<l ND<1 ND<I ND<5
<br /> MW-5 03-15-99 1599 10 to 35 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<O 5 ND<5 ND<1 ND<1 ND<1 ND<l ND<5
<br /> 06-22-99 1660 ND<50 14 74 19 95 ND<5 ND<1 ND<1 ND<l ND<1 ND<5
<br /> 09-10-99 1760 { ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<1 ND<1 ND<l, ND<l ND<5
<br /> 04 28-00 15 80 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 ND<1 NIX ND<1 ND<1 ND<5
<br /> Advanced GeoEnvironmental,Inc
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