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_ • _ 690 Chf-- eam Drive __Redwood City CA 44063_ _ (6SO)3649600_ FAX(650)36A-9233Sequoia 404 N Wiget Larsc Wwrtur Creek CA 94598 (925)998.9600 FAX(925)988-9E73 <br /> 819 Sinker Avenue Suare 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 1707)792 1865 FAX(707)792-034 <br /> 155t Induytnal Road San Carlos CA 94070-4111 (650)Z32 96W FAX(650)232(X I <br /> � � s+�r��,e>�st eaar�fr..��eaxxana ,totcaxa�>,cax , �ex <" ��«`,-` mow.,.. 3�" <br /> Gettfer-Ryan -Dublin Client�rolect CD Unocal SS#5886, Stocltton ��rrlpledµ Jun 1-2,s1999i <br /> 6747 Sierra Court, Suite J Sample Matrix Water Received Jun 2, 1999 <br /> Dublin, CA 94568 -- - -Analysis Method - EPA 5030/8015 Mod-/8020 =- Reported -:tun=17,-1999 <br /> Attention Deanna Harding Fust Sample # 906-0540 <br /> s r,..>,..ia.:t...."..v"„".t,,.. �»+i"�.�+saa^���•K• .Kwr..ae.�v4�aw^ .gex«e.x.<on w«ao-Ku«.ex(a>.S•,Y�w�x yea.: ,.r,xo <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX/ MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> - = Analyte Limit = 1 1]. - -1 D- = 10i l_D- I.D = =I D= <br /> !-i9/L 906-0540 906-0541 W6-0542 906-0543 906-0544 906-054.5 <br /> TB-LB MW-1 MW-2 MW-3 MW-41) MW-4S <br /> Ptlr9 eable <br /> Hydrocarbons 50 N D N D N D N D N D N D <br /> Benzene 050 N D N D N D N N D N D <br /> Toluene 050 ND ND ND ND ND ND <br /> I <br /> Ethyl Benzene 050 N D N D N D N D N b N D <br /> Total Xylenes 050 N D N D N D N D N D N D +� <br /> i <br /> MTBE 25 N D 230 2,600 36 000 12 40 <br /> Chromaiogram Pattem - - - -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 20 10 10 10 <br /> Date Analyzed 6/9/99 6/9/99 6/9/99 6/9/99 6/9/99 6/9/99 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery % 89 89 81 90 84 85 <br /> PC Limits = 70-136%) <br /> Pur9eabie 1-1yorocarbons are,quantitated against a trash gasoline standard <br /> Analytes reported as N D'were not detected above the stated reporting Imd <br /> SEQUOIA ANAL.YTICAL,,#1271 <br /> �i crc�y <br /> Jy ianne Pegley <br /> Proiect Manager 9OW54oGE-C <1 <br />