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Table 1 <br /> Soil Sample Results <br /> Pacific Gas and Electric <br /> McDonald Island Compressor Station <br /> C-51 Tank Site Investigation and Soil Removal <br /> Sample Sample Parameters <br /> Excavation Sample Depth <br /> Area Location (ft bgs) TPH-g TPH-d TPH-mo Moisture <br /> RWQCB ESL for Shallow Soil with <br /> Residential Land Use' 83 83 83 -- <br /> Units mg/kg mg/kg mg/kg % <br /> North 6 <0.57 15 110 11.7 <br /> C51 South 6 <0.57 <5.7 <28 11.8 <br /> East 6 <0.56 <5.6 37 11.4 <br /> EX-S62 West 6 <0.56 <5.6 <28 11.4 <br /> Bottom 7 <0.57 14 150 1 12.8 <br /> North 7 <0.53 <5.3 <27 6.2 <br /> C51 South8 <0.54 <5.4 <27 7.6 <br /> EX-SB4 East 8 <0.56 <5.6 <28 11.2 <br /> Bottom 11.5 <0.58 8.9 <29 14.2 <br /> Notes: <br /> Water Board ESL- Screening for Environmental Concerns at Sites with <br /> Contaminated Soil and Groundwater (Table A), May 2008 <br /> Not established <br /> % Percent <br /> ft Feet <br /> bgs Below ground surface <br /> mg/kg Milligrams per kilogram <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 />