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<br /> Table 2
<br /> TPHG, BTEX And ME Concentrations In Groundwater
<br /> • Former Vintage Car Wash
<br /> 601 East Miner Avenue, Stockton, California
<br /> TPHG Benzene Toluene Ethylhenzene Total Xylenes MTBE
<br /> Well Date Sampled (4L) (pg/L) (NgIL) (pg/L) W/O (N91L)
<br /> ----
<br /> MW-6 04/24/97 3,400 666 28 57 50 6 0
<br /> 09/30/97 990 34.5 18 16 6.9 176
<br /> 12/30/97 2,270 678 306 36.9 58 <1000
<br /> 04122/98 404 82.0 <05 26 1.2 <50
<br /> 05/18/00 851 82.0 396 6.22 8.22 <2 00
<br /> 08116100 160 35 26 46 33.00 <1 0
<br /> 11/06/00 NS NS NS NS NS NS
<br /> 02/15/01 380 100 _ 26 . »21 12 19 -�-
<br /> MW-7 04124197- <50 _ <0 5 <05 <0 5 <0 5 <60
<br /> 09/30/97 <50 <0 5 <0 5 <0 5 <06 <50
<br /> 12/30/97 <50 <05 <05 <0 5 <05 <50
<br /> 04/22/98 29 06 1.1 <0 5 10 <50
<br /> 05/18/00 <50 0 <2 00 <2 00 <200 <2 00 <2 00
<br /> 08/16/00 NS NS NS NS NS NS
<br /> 11106/00 <50 <1 0 <1 0 <1 0 <1 0 <0 5
<br /> 02/15/01 - <50 -.. _ L3 _<0 5 _ _ 110 - 063 <2 0
<br /> GWX-1 _ 04/24/97 _ 212,000 43,000 40,000 3,940 23,000 2,140
<br /> 09/30/97 224,000 55,500 42,000 4,530 25,400 2,660
<br /> 12130/97 232,000 45,600 31,600 4,760 25,700 2,820
<br /> 04/22/98 168,000 37,500 27,200 3,400 18,600 <5,OOD
<br /> 08/16/00 130,000 25,000 20,000 3,800 15,400 590
<br /> 11/06/00 100,000 23,000 24,000 3,800 35,000 720
<br /> _02116101 140,000 17,000 _ _ 17,000 M - 1,900 9,000 _ ---.910
<br /> �-
<br /> VX-1 11/06/00 23,000 580 1,200 1,200 12,400 4.3
<br /> 02/16/01 31,000 310 400 170 1 1,600 1 <2 0
<br /> Notes
<br /> TPH=Total Petroleum Hydrocarbons _ -
<br />' pglL=micrograms per!der --- - __ ---- -
<br /> MTBE=Methyl tertiary butyl ether
<br /> NS=Not Sampled(Vehrde parked over well)
<br /> NA=Not Analyzed
<br /> <2 00=Analyte not detected above the method reporting limit,which may have been elevated due to laboratory dilution
<br /> Analytical results for the equipment and trip blank are not listed
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<br /> N 11COMMON1SacDP120011XLS1803026\042401 s11''able 2
<br /> 4124101 Page 2 of 2
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