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LTable 2 <br /> Groundwater Analytical Results,January 19,2010 <br /> t Western Oil and Spreading Inc.,Acampo Plant Site,Acampo,California <br /> L (in ug/L)1 <br /> Sample TPHM0277 <br /> TPHD2 <br /> Location w out SGC3 w SGC w/out SGC w/SGC <br /> MW-1 <1704 <170 2405 <50 <br /> MW-2 <170 <170 845 <50 <br /> MW-3 <170 NA6 <50 NA <br /> MW-4 <170 NA <50 NA <br /> MW-5 <170 NA <50 NA <br /> L MW-6 <170 <170 855 <50 <br /> MW-7 <170 NA <50 NA <br /> 1. ug/L:micrograms per Liter <br /> L 2. Total Petroleum Hydrocarbons as Motor Oil(TPHMO)and as Diesel(TPHD)analyzed in genera <br /> accordance with EPA Method No.8015B. Samples with detectable levels were subjected to silica <br /> L gel cleanup. <br /> 3. SGC:Silica Gel Cleanup <br /> 4. <: "less than"the stated method reporting limit <br /> 5. Sample contains material in the diesel range of molecular weights,but the material does not <br /> exhibit the peak pattern typical of diesel oil. <br /> 6. NA:Not Analyzed <br /> L Figure 4 presents a site plan that shows concentrations of TPHMO and TPHD,after silica gel <br /> cleanup where applicable,for groundwater samples collected during the January 2010 monitoring <br /> event. Historic groundwater analytical data is included in Appendix B,Table B-4. Appendix C <br /> presents the complete analytical test results,chain-of-custody,and laboratory quality control data. <br /> 3.3 Field Measured Parameters <br /> 6. DO,DCO2,and ORP were measured in all monitoring wells prior to sampling,and are summarized <br /> in Table 3. Historic DO,DCCz,and ORP results are included in Appendix B,Table B-5. <br /> Table 3 <br /> Field Measured Parameters,January 19,2010 <br /> Western Oil and Spreading Inc.,Acam o Plant Site,Acam o,California <br /> Sample DO' DCO23 ORP4 <br /> Location (M 2 m (mV)5 <br /> MW-1 3.90 130 -105 <br />` MW-2 3.70 85 86 <br /> MW-3 4.75 65 83 <br /> MW-4 4.72 55 85 <br /> r. MW-5 5.41 55 76 <br /> MW-6 2.90 75 86 <br /> j MW-7 6.81 60 45 <br /> 1. DO: Dissolved Oxygen 4. ORP: Oxidation-Reduction Potential <br /> 2. mg/L:milligrams per Liter 5. mV: millivolts <br /> 3. DCO2:Dissolved Carbon Dioxide <br /> \\Enreka\projects\2007\007152-WOS\PUBS\rpt\201003241stHa1f2010GWMR&RFC.doc � <br /> 3 <br /> L <br />