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Table i <br /> Historical Groundwater Data <br /> CCT Rail Yard <br /> 1645 Cherokee Rd. <br /> Stockton,California <br /> TPH-d TPH- Benzene Toluene Ethyl- <br /> [Motnitor:ingWells <br /> ate g benzene Xylene MTBE <br /> EPA Method 8015M EPA Method 8020 <br /> Concentrations in micrograms per liter(pg/1) <br /> MW-1 09/01/00 100* <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 05/01/01 6o* <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 07/23/01 <240** <50 <0.50 <0.50 <0.50 <0.50 -- <br /> 11/15/01 NS NS NS NS NS NS NS <br /> 02/09/02 NS NS NS NS NS NS NS <br /> MW-2 09/01/00 87 <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 05/01/01 <50 <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 07/23/01 NS NS NS NS NS NS NS <br /> 11/15/01 NS NS NS NS NS NS NS <br /> 02/09/02 NS NS NS NS NS NS <br /> NS <br /> MW-3 09/o1/oo 100* <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 05/01/01 89* <50 <0.50 <0.50 <0.50 <0.50 <5.0 <br /> 07/23/01 NS NS NS NS NS NS NS <br /> 11/15/01 NS NS NS NS NS NS NS <br /> 02/09/02 NS NS NS NS NS NS NS <br /> MW-4 11/15/01 NS NS NS NS NS NS NS <br /> 02/09/02 NS NS NS NS NS NS NS <br /> Woodward-G7yde Borings' <br /> B-I o8/02/99 94,000 12,000 28 22 550 2,400 <50 <br /> B-2 NS NS NS NS NS NS NS NS <br /> B-3 NS NS NS NS NS NS NS NS <br /> B-4 NS NS NS NS NS NS NS NS <br /> B-5 NS NS NS NS NS NS NS NS <br /> Hydro-Environmental Technologies,Inc.,Borm s <br /> B-i 07/12/00 <50 <50 <0.5 <0.5 <0.5 <0.5 <2.0 <br /> B-2 07/13/00 <50 <50 <0.5 <0.5 <0.5 2.9 <2.0 <br /> B-3 07/13/00 <50 <50 <0.5 <0.5 o.63 4.3 <2.0 <br /> B-4 07/14/00 <50 <50 <0.5 0.54 <0.5 <0.5 <2.0 <br /> B-5 07/14/00 <50 <50 <0.5 <0.5 <0.5 <0.5 <2.0 <br /> B-6 07/14/00 <50 <50 <0.5 <0.5 <0.5 <0.5 <2.0 <br /> B-7 o6/09/04 <50 - - - - -- <br /> B-8 o6/09/04 2,900 -- -- - - -- -- <br /> B-9 o6/09/04 <50 -- - -- - -- - <br /> B-10 o6/11/04 <50 -- -- -- <br /> B-11 06/11/04 1,300 -- -- -- -- -- -- <br /> Remedial Excavation <br /> W-1*** 07/13/05 4,460 <50 <0.5 <0.5 <0.5 <1.0 <br /> Notes: <br /> * Hydrocarbon reported does not match the diesel standard;probably degraded diesel. <br /> *' Analysis leased on insufficient sample because of laboratory QA/QC problems. <br /> BTEX was analysed by 8o2uB.A full VOC and Semi VOC analysis was also run,however,due to the copious nature <br /> of the report,only the pertinent Petroleum Hydrocarbon values are presented in the table. A compilation of <br /> the VOC and Semi VOC analysis is provided in the certified laboratory report included in CLS's Remedial Action Report. <br /> TPH-g = total petroleum hydrocarbons as gasoline p9/1= micrograms per liter <br /> TPH-d =total petroleum hdyrocarbons as diesel -- = not analyzed <br /> M"CBF. = methyl tertiary butyl ether NS = not sampled <br /> fbg = feet below grade <br />