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Superior Precision ArWa/ytica/, /nt- <br /> A member of ESSCON Environmental Support Service Consortium <br /> C E R T I F I C A T E O F A N A L Y S I S <br /> TOTAL PETROLEUM HYDROCARBONS <br /> QA/QC Information <br /> Laboratory Number: 50066 <br /> NA - Analysis NOT required <br /> ND - Not Detected above quantitation limit <br /> ug/L = parts per billion (ppb) <br /> EPA SW-846 Method 5030/8015M/8020 Total volatile Petroleum Hydrocarbons/BTXE <br /> Minimum Quantitation Limit for Gasoline in water: 50 ug/L <br /> Minimum Quantitation Limit for BTXE in water: 0.5 ug/L <br /> Matrix: Water <br /> Analyte Spike Recovery RPD Control Limits <br /> Gasoline_Range 101/103 2 65-135 <br /> Benzene 88/93 6 65-135 <br /> Toluene 90/95 5 65-135 <br /> Ethyl Benzene 90/94 4 65-135 <br /> Total Xylenes 90/94 4 65-135 <br /> 1�Im Ii <br /> Senior Chemist <br /> Account Manager <br /> Page 2 of 2 <br /> Certified laboratories <br /> 825 Arnold Dr Suite 1 14 1555 Burke St Unit 1 309 S Cloverdale St Suite B-24 <br /> Martinez California 94553 San Francisco, California 94124 Seattle Washington 98108 <br /> (510) 229-1512 / fax (510) 229-1526 (415) 647-2081 /fax (415) 821-7123 (206) 763-2992 / fax (206) 763-8429 <br />