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TABLE 4 <br /> SUMMARY OF GROUNDWATER MONITORING AND ANALYTICAL DATA <br /> 640 N. EI Dorado Street, Stockton, CA <br /> Page 6 of 6 <br /> (in micrograms per liter(ug/L]) <br /> N y d 0 Q E 0 m m <br /> Well GW = = is v m c a m V m ° m w w V ra <br /> Date DTW a a c n °' F- I] m r`i V L) D t <br /> (TOC) ELEV F y o �, Z N w � o 1 IL F r s <br /> m t x r m a r <br /> W L) Z <br /> MW7 06/03/03 24.75 -14.51 <50 <50 <1000 <0.5 <0.5 <0.5 <1.0 1 <0.5 <0.5 <0.51 0.7 1.8 110 5.1 <0.5 <0.5 <0.5 <br /> (10.24) 09/04/03 25.79 -15.55 <50 <50 -- <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.51 1.0 0.5 120 6.5 <0.5 <0.5 1 <0.5 <br /> 12/04/03 26.58 -16.34 <50 <50 - <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 1.5 1.7 77 3.1 <0.5 <0.51 <0. <br /> 03/08/04 25.63 -15.39 <50 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.7 1.5 95 3.7 <0.5 <0.5 1 <0.5 <br /> 06/03/04 25.62 -15.38 -- - <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 1.2 150 4.4 <0.5 <0.5 <0.5 <br /> 09/30/04 26.96 -16.72 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.7 1.7 110 3.6 <0.5 <0.5 <0.5 <br /> 12/08/04 27.10 -16.86 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.9 2.6 130 3.1 <0.5 <0.5 <0.5 <br /> 03/03/05 25.84 -15.60 <50 <50 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.7 1.4 100 2.9 <0.5 <0.5 <0.5 <br /> 06/07/05 24.56 -14.32 -- -- <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 0.9 110 2.7 <0.5 <0.5 <0.5 <br /> 09/13/05 25.30 -15.06 70.5 <0.5 <0.5 <0.5 <0.5 1 <0.5 <0.5 <0.5 1.1 140J3.O <0.5 <0.5 <0.512/16/05 25.88 -15.64 - <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <.05 <0.5 1.0 160 <0.5 <0.5 <0.503/22/06 23.91 -13.67 <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 67 <0.5 <0.5 <0.506/20/06 21.90 -11.66 - <0.5 <0.5 <0.5 <1.0 <0.5 <0.5 <0.5 <0.5 <0.5 47 <0.5 <0.5 <0.5 <br /> NOTES: <br /> TOC = Top of well casing by licensed surveyor 1,2-DCA = 1,2-Dichloroethane <br /> DTW = Measured Depth to groundwater(feet) cis-1.2-DCE = cis-1,2-Dichloroethene <br /> GW ELEV = Calculated groundwater elevation(feet,MSL) EDB = Ethylene Dibromide <br /> TPHg = Total Petroleum Hydrocarbons as gasoline PCE = Tetrachloroethene • <br /> TPHd = Total Petroleum Hydrocarbons as diesel TCE = Trichloroethene <br /> TRPH = Total Recoverable Petroleum Hydrocarbons 1,2-DCB = 1,2-Dichlorobenzene <br /> MTBE = Methyl-t-Butyl Ether 1,2,4-TMB = 1,2,4-Trimethylbenzene <br /> a = Concentration is approximate due to interference of gas range and heavy hydrocarbon range constituents <br /> TRPH and lead analysis discontinued,PHS/EHD Corresp 12/31/01;TPHg and TPHd analyzed annually <br /> GWcombineddata.xls/combined Table <br />