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Mar-02-99 11 :09A Pinnacle/EMCON N _ P.06 <br /> Sequoia 680 Chesapeake Drive itedwood Cary,CA 94063 (650)364-9600 FAX(650)364.9233 <br /> 404 N.Wiget t Ane Walnut Creek.CA 94598 (9z5)988-9600 FAX{925}98$-9673 <br /> Analytical 819 Striker Avenue.Suite a Sacramento,CA 95$94 (916)921-06W FAX(916)911 010D <br /> 1455 MCDawe11 Blvd North,$re.D retalumA CA 94954 (707)792-1665 FAX(707)792-0342 <br /> 4 <br /> Pinnacle-C.P. Project: Arco 548,Stockton,CA Sampled; 10/26198 to 10/27!98 <br /> 3939 Cambridge Road,Ste,220 Project Dumber: NIA Received: 10/28/98 <br /> Cameron Park,CA 95682 Project Manager Mark Capps Re artcd: 11/17/98 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHS LUMQuailty Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units i Recov. Limits % Limit % Notes* <br /> i <br /> j <br /> Aatch: 8110019 Date Prepared: 1112196 Extraction Method: EPA 5030B{PIT) <br /> ��g� 8100019-BLKI <br /> z Purgeable Hydrocarbons 1112198 NA ugJl 50.0 <br /> Benzene ND 0.500 <br /> E Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> 1 Xylenes(total) ND 0.500 <br /> 1 Methyl tert-butyl ether ND 5.00 <br /> l <br /> Surrogate: a,a,a-Trifluarotoluene 10.0 10.0 60.0-140 100 <br /> J C fl110019-B51 <br /> Benzene 1312Jy8 10.0 9.84 ug11 70.0-130 98.4 <br /> Toluene 10.0 9,28 700-130 92.8 <br /> Ethylbenzene 10.0 9.14 70.0-130 91.4 <br /> Xylenes(total) 30.0 27.4 70.0-130 91.3 <br /> Methyl ten-butyi ether 10.0 9.79 70,0-130 97.9 <br /> Surrogate: a,a,a-Triuorotoluene 10.0 9.80 60.0-140 98.0 <br /> i Matril Spik8110019-MSI 5010327-02 <br /> Benzene 1112198 10.0 ND 10.1 ug/l 60.0-140 101 <br /> Toluene 100 ND 9.49 60.0-140 94.9 <br /> Ethylbenzene 10.0 ND 9.40 60.0-140 94.0 <br /> Xylenes(total) 30.0 ND 28.2 60.0-140 94.0 <br /> Methyl tert-butyl ether10.0 ND 10.7 60.0-140 107 <br /> Surrogate. a.a.a-Trifluorotoluene 10.0 9.71 60.0-140 97.1 <br /> 8„110019-h1S©1 S81Q31.7:Q1 <br /> Benzene 1112/98 10-0 ND 10.4 u;g/l 60.0-140 104 25.0 2.93 <br /> Toluene 10,0 ND 9.78 60.0-140 97.8 25.0 3.91 <br /> Ethylbenzene 10.4 ND 9.66 " 60.0-140 96.6 25.0 2-73 <br /> Xylenes(total) 30.0 ND 29.0 60.0-140 96.7 25-0 2.83 <br /> Methyl tett-butyl ether 10.0 ND 11.2 60,0-140 112 25.0 4.57 <br /> Surrogate: a,a,a-Trifluororofuerte 10.0 9.87 6&0-140 98.7 <br /> i1 <br /> I <br /> 1 Sequ Analytical-5 crament "Refer to eno <br /> d f report for text of moths and defujitions. <br /> C " <br /> Mage 4 of G <br /> Ronald tiV Bobel,Client Services Representative <br />{ <br />