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Quarterly Monitor Well Sampling Report Cox Cox WES#4090-P P.Q Box 1046 � Tracy, CA 95378 ,•.. u.:;srwater ar.:,tcrox,W., nwl,,�.r„mr,s,,.,�,, ,,,,,, -av, s, w-teas Well Nn Date Well Depth Depth to Casing elev. Water Elev. Floating TPHG Benzene Toluene -Ethylbewene Xylene Fuel Ox Sampled (ft.) Water(ft.) (MSLft.)• (MSL ft.) Product 24 MW9MW98/20/1997 15.95 8.33 48.28 39.95..__" Nonc V ., 14000 1.2 ._. a__ 14 NIM) 12/12/1997 15.95 8 48.28 40.28 None 260 ll 15 3.7 12 ND NIW9 3/31/1998 13.18 7.23-- .- 48.28 .:_.;:None: : 15000- = 1700- <_ =470 =890 a __ !500= =`a-ND ._ _ -.-.: NIW9 6/30/1998 13.18 7.49 48.28 41.79 None 29000 1600 490 1400 2900 NO NIW9 9/29/1998 13.18 8.76 48.28 39.52 None 12000 680 80 710 1700 ND NIW9 1/14/1999 13.18 8.41 48.28 39.87 None 14000 1300 300 1200 1700 ND NIW9 .4/29/1999 13.32 7.87 48.28 40.41 None 5800 1000 60 540 550 ND MW9 6/30/1999 I3.32 8.22 48.28 40.06 None 7600 850 59 450 760 ND NIW9 10/5/1999 13.32 8.71 48.28 39.57 None 1100 6.1 8.4 ND 6.7 ND NIW9 1/27/2000 13.11 8.13 48.28 40.15 None 14000 860 74 790 1900 ND MW9 4/20/2000 13.09 7.97 48.28 40.37 None 13000 1300 100 710 1400 NO MW9 7/19/2000 12.21 8.93 48.28 39.35 None 11000 950 57 590 1200 ND MW9 10/17/2000 12.31 10.07 48.28 38.21 Yes 66000 3100 850 4800 19000 ND NIW9 1/17/2001 12.31 9.29 48.28 38.99 None 19000 550 150 1400 4700 ND MW9 4/24/2001 12.21 8.92 48.28 39.36 Yes 78000 1200 540 4100 16M NO M W9 7/31/2001 12.31 9.32 48.28 38.96 Yes-.30 ft 46000 850 330 3100 12000 NO l MW9 11/16/2001 12.21 10.1 48.28 38.16 Yes-.65 ft 54000 1300 480 4100 15000 ND NIW9 4/30/2002 12.21 8.78 48.28 39.5 Yes-.03 ft 49000 620 190 3500 13000 NO MW9 8!5/2002 12.21 8.73 48.28 39.51 YES.25 71000 1200 360 4700 16000 NO N4W9 12/23/2002 13-61 7.81 48.28 40.47 YES 0.03 190000 940 310 5100 17000 NO NIW9 4/8/2003 12.21 8.65 48.28 39.63 8.6 47000 500 100 2100 6100 NO ' 'i