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I <br /> i ' <br /> 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br />� � Sequoia 404 N Wigec Lane Walnut Creek CA 94598 (925)988 9600 FAX(925)98$ 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)92t 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1$65 FAX(707)7c)2-0342 <br /> Nn <br /> 0 <br /> Ground Zero Analysis, Inc Client Prof ID 96-163%Knowles Rock Sampl d 09/13/98 <br /> Receiv d 09/14/98 <br /> 1714 Main St Sample Descript KR Efflu <br /> ! Escalon, CA 95320 Matrix AIR Anal z d 09/16/98 <br /> Analysis Method 8015Mod/8020 Report d 092898 <br /> Attention Justin Powers Lab Number 9809815-02 <br /> 'QC Batch Number GCO916986TEX06A <br /> � Instrument ID GCHP06 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Detection Limit Sample��sults <br /> Analyte ug/L g <br /> 10 ND <br /> ' TPPH as Gas 010 015 <br /> Benzene 010 N D <br /> Toluene 010 N D <br /> Ethyl Benzene 010 N D <br /> ' Xylenes (Total) <br /> Chromatogram Pattern <br /> Control Limits% o Recovery <br /> ' Surrogates 70 130 94 <br /> Trifluorotoluene <br /> i <br /> 1 <br /> i <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICA - ELAP #1210 <br /> 11 <br /> Page 2 <br /> olect Manager <br /> I <br /> � i <br /> g� <br />