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O Superior !'recision Analytical, Inc. <br /> 825 Arnold Dnve Suite 1 14 • Martinez California 94553 • (510) 229 1 51 2 / fax [51 0) 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 84568 <br /> NA = ANALYSIS NOT REQUESTED <br /> ND = ANALYSIS NOT DETECTED ABOVE QUANTITATION LIMIT <br /> ug/L = part per billion ( ppb) <br /> OIL AND GREASE ANALYSIS By Standard Methods Method 5520F <br /> Minimum Detection Limit in Water 5000ug/L <br /> Modified EPA-SW846 Method 8015 for Extractable Hydrocarbons <br /> Minimum Quantitation Limit for Diesel 7n Water : 50ug/L <br /> Standard Reference NA <br /> EPA-SW846 Method 8015/5030 Total Purgable Petroleum Hydrocarbons <br /> Minimum Quantitation Limit for Gasoline in Water - 50ug/L <br /> Standard Reference 10/04/91 <br /> SW-846 Method 8020/STXE <br /> Minimum Quantitation Limit in Water 0 . 5ug/L <br /> Standard Reference 10/11 /91 <br /> ANALYTE REFERENCE SPIKE LEVEL MS/MSD RECOVERY RPD CONTROL LIMIT <br /> ---------------- ---- --------------- <br /> Oil & Grease NA NA NA NA NA <br /> Diesel NA NA NA NA NA <br /> Gasoline 10/04/91 200 ng 99/102 2 70-130 <br /> Benzene 12/02/91 200 ng 95/100 5 70-130 <br /> Toluene 12/02/91 200 ng 90/96 6 70--130 <br /> Ethyl Benzene 12/02/91 200 ng 94/100 6 70- 130 <br /> Total Xylene 12/02/91 200 ng 95/101 6 70-130 <br /> * Both gasoline and a single solvent peak ( chlorinated ) were observed <br /> in the chromatograms <br /> ** Both gasoline and multiple solvent peaks were observed in the <br /> chromatograms . <br /> Mcha, Ph D <br /> Director <br /> Certrfied Laboraiones <br />