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Superior Precision Analytical, Inc. <br />575 D,rv. S.j;te 1 14 • Martinez. C.i ifornip 9.4553 • (510) 229-1511 / fcix (5101 229 1 526 <br />C E R T I F I C A T E O F A N A L Y S I S <br />ANALYSIS FOR TOTAL PETROLEUM HYDROCARBONS <br />Page 2 of 2 <br />QA/QC INFORMATION <br />SET: 87104 <br />NA = ANALYSIS NOT REQUESTED <br />ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br />mg/kg = parts per million (ppm) <br />OIL AND GREASE ANALYSIS By Standard Methods Method 5520F: <br />Minimum Detection Limit in Soil: 50mg/kg <br />Modified EPA SW -846 Method 8015 for Extractable Hydrocarbons: <br />Minimum Quantitation Limit for Diesel in Soil: lmg/kg <br />EPA SW -846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons: <br />Minimum Quantitation Limit for Gasoline in Soil: lmg/kg <br />OPA SW -846 Method 8020/BTXE <br />Minimum Quantitation Limit in Soil: 0.005mg/kg <br />ANALYTE <br />SPIKE <br />LEVEL <br />MS/MSD RECOVERY <br />RPD <br />CONTROL LIMIT <br />Gasoline: <br />200 <br />ng <br />97/97 <br />0% <br />70-130 <br />Benzene: <br />200 <br />ng <br />98/98 <br />0% <br />70-130 <br />Toluene: <br />200 <br />ng <br />95/96 <br />1% <br />70-130 <br />Ethyl Benzene: <br />200 <br />ng <br />98/99 <br />1% <br />70-130 <br />Xylenes: <br />200 <br />ng <br />96/97 <br />1% <br />70-130 <br />Ric rd Srna, P , <br />tab -orator;( Director <br />Ccrti(reci L,Ihormo[,c,S <br />