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.y <br /> Sequoia 680 Chesapeake Drove Redwood City CA 94063 (650)364 9600 FAX(650)364-9233 <br /> 404 N Wlget lane Walnut Creek,CA 94598 (925)988-9600 FAX(92 5)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707) 792-0342 <br />[PinnPinnacle-C P Project Arco 548,Stockton,CA Sampled 10/26/98 to 10/27/98 <br /> acle <br /> Road,Ste 220 Project Number N/A Received 10/28/98 <br /> Cameron Park,CA 98682 Project Manager Mark Caps Reported 11/11/98 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS L1<JFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sampie QC Reporting Limit Recov RPD =/. N <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit <br /> Bash. 8110023 Date prepared. 11/2/98 Extraction Nielbod, EPA 5030B(MeOH) <br /> Blank 8110023- .K1 <br /> Purgeable Hydrocarbons 11/2/98 ND mg/kg 1 00 <br /> Benzene ND 000500 <br /> Toluene „ <br /> ND 000500 <br />'thylbenzene ND 000500 <br /><ylenes(total) ND 000500 <br /> vlethyl tert-butyl ether ND 00500 <br /> surrogate a,a a-TrEfluorotoluene 0200 0205 600-140 102 <br /> I-CS 81I0023-BS1 <br /> knzene 11/2/98 _ 0200 0 224 mg/kg 700-130 112 <br />'oluene 0200 0 214 700-130 107 <br /> thyl enzene 0200 0 213 700-130 106 <br />:y total) 0 600 0 630 700-130 105 <br /> let ert-butyl ether 0200 0 218 700-130 109 <br /> urrogale a a a-Trfluorotoluene 0200 0105 600-140 102 <br /> lax Ir x Spilte 8110023-� $-03 <br /> enzene 11/2/98 0200 ND 0 187 mg/kg 600-140 93 5 <br /> oluene 0200 ND 0 184 600-140 920 <br /> thylbenzene 0200 ND 0 185 600-140 92 5 <br /> ylenes(total) 0 600 ND 0 567 600-140 94 5 <br />[ethyl tert-butyl ether 0200 NO 0 186 600-140 93 0 <br /> arrogate a,a a-Tr�fluorotoluene 0100 0203 600-140 104 <br />[atrix Spike DIr'P $110023-MSD1 5810248-03 <br />:nzene 11/2/98 0200 ND 0 187 mg/kg 600-140 93 5 25 0 0 <br /> fluene 0200 NO 0 176 600-140 880 25 0 444 <br /> hylbenzene 0200 ND 0 183 600-140 91 5 25 0 1 09 <br /> ylenes(total) 0 600 ND 0 559 600-140 93 2 25 0 139 <br /> ethyl tert-butyl ether 0200 NO 0 179 600-140 89 5 25 0 384 <br /> rrogate a a a-T-Auorotoluene 0100 0 212 600-140 106 <br /> itch. 1/0431 DalePrepared. 11/3198 <br /> Extra_cilttn Method, EP 5A 030B(Me{1H1 <br /> oak 8110037-BLE1 <br /> rgeable Hydrocarbons 11/3/98 ND mg/kg 100 <br /> nzene ND 000500 <br />[uene ND 000500 <br /> iyibenzene ND 000500 <br /> lenes(total) ND 000500 <br /> to-butyl ether ND 00500 <br /> luoia Analytical -Sacramento *Refer to end of report for text of notes and definitions <br /> iald W Bobel,Client Services Representative Page 8 of 12 <br />