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Trace Analysis Laboratory,Inc <br />' LOG NUMBER. 5831 <br /> DATE SAMPLED: 09/15/95 <br /> DATE RECEIVED. 09/15/95 <br /> DATE ANALYZED: 09/15/95 <br />' DATE REPORTED: 09/19/95 <br /> PAGE: Four <br /> Sample Type: Vapor <br />' Method Blank <br /> Method and Concen- Reporting <br /> Constituent Units tration Limit <br /> Modified DHS Method: <br /> Total Petroleum Hydro- <br /> carbons as Gasoline ppm* ND 3.3 <br /> EPA Method 8020 for: <br /> tBenzene ppm* ND 0 033 <br /> Toluene ppm* ND 0 027 <br /> thylbenzene ppm* ND 0 023 <br /> Xylenes ppm* ND 0.069 <br />' OC Summary: <br /> % Recovery: 102** <br /> % RPD: 16 <br /> Concentrations reported as ND were not detected at or above the reporting limit. <br />'* The sample concentrations were converted to ppm using California Department of Health and <br /> Safety publication GISO 5155 <br />** The Recovery for vapor samples is based on the Laboratory Control Sample <br /> I <br /> Louis W DuPuis <br /> Quality Assurance/Quality Control Manager <br /> 6I <br />