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TABLE 4 <br /> HISTORICAL GROUNDWATER CHEMICAL DATA <br /> PG&E French Camp General Construction Yard <br /> 401 East French Camp Road <br /> French Camp, California <br /> EPA Method 8015B EPA Method 8260B <br /> Well ID bate- TPHg TPHd TPHmo Benzene Toluene Ethylbenze6e Xylenes MTBE <br /> (Ng/L) (N /L) (ug/L) (Ng/L) (ug/L) (ug/L) (ug/L) (Ng/L) <br /> MW-1 5/4/2007 580* 850 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 11/13/2007 <50 < 50 1 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 2/13/2008 < 50 150 <250 < 0.50 < 1.0 < 1.0 < 1.0. < 1.0 <br /> 5/27/2008 < 50 < 50 < 250 <0.50 < 1.0 < 1.0 < 1.0 . < 1.0 <br /> 8/15/2008 < 50 65 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> --monitoring well MW-1 abandoned in June 2009-- ` <br /> . . <br /> MW-2 5/4/2007 < 50 < 501 <250 1 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 11/13/2007 < 50 < 50 1 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 2/13/2008 < 50 < 50 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 5/27/2008 < 50 . 98 < 250 <0.50 <.1.0 < 1.0 <1.0 < 1.0 <br /> 8/15/2008 < 50 52 <250 <0.50 <"1.0 < 1.0 < 1.0 < 1.0 <br /> --monitoring well MW-2 abandoned in June 2009-- <br /> MW-3 5/4/2007 < 50 < 50 1 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 11/13/2007 < 50 < 50 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 2/13/2008 < 50 < 50 < 250 < 0.50 < 1.0 < 1.0 < 1.0 <.1.0 <br /> 5/27/2008 < 50 < 50 <250. <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> 8/15/2008 < 50 . < 50 <250 <0.50 < 1.0 < 1.0 < 1.0 < 1.0 <br /> --monitoring well MW-3 abandoned in June 2009-- <br /> Table Notes: Y <br /> Concentrations detected above method reporting limits are shown in bold. <br /> < Indicates compound not detected at or above the specified method reporting limit. <br /> Indicates the sample chromatographic pattern for the TPH constituent does not match the laboratory standard. <br /> 1 Samples were processed using silica gel preparation prior to analysis <br /> Abbreviations: <br /> pg/L Micrograms per liter. <br /> TPI-Ig Total petroleum hydrocarbons as gasoline(carbon chain range C5-C12). <br /> - TPHd Total petroleum hydrocarbons as diesel(carbon chain range C10-C26). <br /> TPHmo Total petroleum hydrocarbons as motor oil(carbon chain range C24 C36Y <br /> MTBE Methyl tert-butyl ether. <br /> French Camp Closure Rpt_Tables.xlsx/T3-TPH gw results 1 of 1 12/21/2010 <br />