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Sequoia 680 Chesapeake Drive Redwood city CA 94063 (650)364-9600 FAX(650)364-9133 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)9B8-9673 <br /> • 819 Striker Avenue Suite 8 Sacramento,CA 95834 (?J6}� 00 FAX(916)921-0100 <br /> tilll� Analytical 1455 McDowell Blvd North Ste D Petaluma, 949 — . f{y �5 FAX(707)792-0342 <br />*11�,e% <br /> ea r v�. v..,. ., c -sx �.pv ^ , t- ,. 3ki � atii ,r`-F'i*a'0"b`.iiri' a' Client project lb Unocal $$#0123; y` Sampled DDC 14, 1998, <br /> it 6747 Sierra CourtSuite J Matrix Water � k��,Sample ` ' <br /> p � , y C .�,Received Dec 15, 1998 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 Resor d Dec 31, 1998 <br /> Attention Deanna Harding First Sample # 812-1234 , <br /> ',� 4 ' .v r ;, ^' .,.,4 �.`.` rte'.'"afar.:`•i ., .4 ... yr rc,.,.c..,,.�,,,,,4�..r^`S''�� a.s�'�`3,E°,.`v1�� c`N,,.^ r�rn , `r ,.. � <br /> i^7,3 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS withtBTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D 1.13 1.1) I.D I D I D <br /> µg/L 812-1234 812-1235 812-1236 812-1237 812-1238 812-1239 <br /> TB-LB U-1 U-2 U-3 U-4 U-5 <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D 2,800 N D <br /> Benzene 050 N D 0 88 N D N D 78 N D <br /> Toluene 050 N D N D N D N D 14 N D <br /> Ethyl Benzene 050 N D N D N D N D 110 N D <br /> Wotal Xylenes 0 50 N D N D N D N D 26 N D <br /> MTBE 25 ND ND ND ND 49 ND <br /> Chromatogram Pattern -- -- -- -- Gasoline& -- <br /> Unidentified <br /> Hydrocarbons <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 10 1 0 <br /> Date Analyzed 12/17/98 12/17/98 12/17/98 12/17/98 12/17/98 12/17/98 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 100 100 104 97 102 103 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> EQUOIA ANALYTICAL, 4#1271 <br /> lianne Fegley <br /> Project Manager <br /> 8121234 GEr <>> <br />