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sl <br /> Sequoia Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> a- ) 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North,Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> u Gettler RyaniGeostrategles Client Prof ID Former Unocal Facility #5098 Sampled 09/15/98- <br /> 6747 Sierra ourt Suite J Sample Descript Delta College Received 09/15/98 <br />,n Dublin, CA 94568 Matrix LIQUID <br /> Analysts Method EPA 8015 Mod Analyzed 09/16/98 = <br /> Attention Deanna Harding Lab Number 9809909-10 _ Reported 09f30j98 <br /> OC Batch Number GC0916981SHSHSB <br /> Instrument ID GCV-01 <br /> Industrial Solvents <br /> Analyte Detection Limit Sample Results <br /> mg/L mg/L <br /> Methanol 1 0 N D <br /> Surrogates Control Limits % % Recovery <br /> Pentanal RTX 200 55 157 109 <br /> Pentanal DBWAX 57 170 102 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br />§Granicher <br /> ect Manager Page 20 <br />