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819 Striker Avenue Suite 8 <br /> Sacramento,CA 95834 <br /> Sequoia (916)921-9600 <br /> 4 15) <br /> FAX(9 16)921-0100 <br /> Analytical ,"" uflia+a coin <br /> VO <br /> i Gettler-Ryan-Dublin Project Chevron 9-6258,Stockton,CA Sampled 4124100 <br /> 6747 Sierra Court,Ste j Project Number 386844 Received 4126100 <br /> Dublin,CA 94568 Pro ect Manager Deanna L Harding Reported 5110100 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHSS LUyr/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RP�RP�D <br /> pmt a Ana} zed Level Result Result Units Recov Limits % Lim <br /> Blank(continued] 0050071-BLK1 600-140 861 <br /> Surrogate a,a,a-Tris luorotoluene 5/4/00 100 861 u9/1 <br /> 0050071-B31 955 ug/1 700-130 95 5 <br /> Benzene 514100 10 0 9 62 1 <br /> ItToluene 9 57 70 0-130 95 7 700-130 962 <br /> Ethylbenzcne too 30 0 28 6 700-130 95 3 <br /> Xylenes(total) „ 700-130 942 <br /> Methyl tert-butyl ether 10 0 9 42 " <br /> Surrogate a a,a-Trifluorotoluene <br /> �� 100 <br /> 8 88 60 0-140 88 8 <br /> Matrix S ike 0050071-MSI 5004347-02 600-140 978 <br /> Benzene 514100 10 0 ND 9 78 41 <br /> To too ND 983 " 600-140 983 <br /> To 60 0-140 98 8 <br /> E ne 10 0 ND 9 88 <br /> Xylenes total 29 4 60 0-140 98 0 <br /> y (total) 30 D ND <br /> 10 0 ND 106 600-140 106 <br /> Methyl tert-butyl ether 840 " 600-140 840 <br /> Surrogate a,a,o-Trifluorotoluene 10 0 <br /> Matrix Spike Dup 0050071-MSD1 S004347-02 <br /> Benzene 514100 100 ND 956 ugll 600-140 956 250 228 <br /> 10 0 ND 961 IF600-140 961 250 2.26 <br /> Toluene 6it 00-140 966 25 0 2.25 <br /> Ethylbenzene 10 0 ND 9 66 <br /> (total) 300 ND 285 '^ 600-140 950 25 0 3.11 <br /> Xylenes butyl ether 10 0 ND 7 93 600-140 793 250 288 2 <br /> Methyl (total) <br /> 8 66 0-140 86 6 <br /> Surrogate a,a,a-Trifluorotoluene <br /> ^ 10 a 60 <br /> i <br /> "Refer to end of reportfor text of notes and definitions <br /> Sequoia Analytical-Sacramento <br /> Page 6 of 9 <br />