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Table 2 <br /> Groundwater Sample Results <br /> Pacific Gas and Electric <br /> McDonald Island Compressor Station <br /> C-51 Tank Site Investigation and Soil Removal <br /> Sample Parameters <br /> Sample <br /> Excavation Area Location TPH-g TPH-d TPH-mo Naphthalene <br /> RWQCB ESL for Groundwater with <br /> Residential Land Use' 100 100 100 17 <br /> C51 North of <100 1 430 1 <500 <10 <br /> TW-01 Excavation <br /> Notes: <br /> Water Board ESL- Screening for Environmental Concerns at Sites with <br /> Contaminated Soil and Groundwater (Table A), May 2008 <br /> pg/L micrograms per liter <br /> RWQCB Regional Water Quality Control Board <br /> ESL Environmental Screening Level <br /> TPH-g Total petroleum hydrocarbons as gasoline <br /> TPH-d Total petroleum hydrocarbons as diesel <br /> TPH-mo Total petroleum hydrocarbons as motor oil <br /> <RL Not detected at or above the reporting limit(RL)value <br /> Bold values indicate detected concentrations. <br /> Highlighted results indicate concentrations above the respective screening level. <br /> Tables 1&2-Sample Results.xls ARCADIS Page 1 of 1 <br />