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819 Striker Avenue,Suite 8 <br /> Sequoia 5acrarnento,C,95834 <br /> (916)921-9600 <br /> * FAX(916)921-0100 <br /> Analytical www sequoWabs corn <br /> (40 <br /> Gettler-Ryan-DubhnSam led 4124100 <br /> Pro ect Chevron 9-6258,Stockton,CA P <br /> Pro ect Number 386844 Received 4126100 <br /> 6747 Sierra Court,Ste 1 Re orted 5110100 <br /> Dublin,CA 94568 Project Manager Deanna L Hardin <br /> Industrial Solvents by EPA Method 8015(modified)/Quality Control <br /> Sequoia Analytical-Morgan Hail <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch OE0301Z Date Prepared 513100 Extraction Method EPA 3810 Headspace <br /> Blank OE03012-BLKI 100 <br /> Methanol 513100 ND mg/l <br /> Surrogate 1 pentanol of500 2 87 55-157 574 <br /> Surrogate 1 pentanol(dbwax) " 500 304 57-170 608 <br /> Blank OE03012-BLK2 <br /> ND mg/1 100 <br /> Methanol 514100 <br /> Surrogate 1 pentanol '. 500 395 <br /> 55-157 1 0 <br /> Surrogate I pentanol(dbwax) Soo 406 57-170 81 2 <br /> LCS OE03012-BS 1 <br /> M 7 15 mg/l 70-130 894 <br /> Methanol 513100 800 <br /> Su ate !pentanol 500 373 <br /> 55-157 74 6 <br /> 3 to 1 pentanol(dbwax) " 500 393 57-170 786 <br /> LCS OE03012-BS2 <br /> Methanol 514100 8 00 687 mg/l 70-130 85 9 <br /> Surrogate 1 pentanol 500 422 55-157 84 4 <br /> Surrogate 1 pentanol(dbwax) 500 411 57-170 822 <br /> Matrix Spike OE030_ 1� 2_-MS1 M3'D0904-02 <br /> 50-150 105 <br /> Methanol 5/3100 800 ND 8 m 55-157 106 <br /> Surrogate 1 pentanol 500 529 <br /> Surrogate 1 pentanol(dbwax) 500 542 <br /> 57-170 I08 <br /> Matrix Spike Du p OE03012-MSD1 MJD09M2 <br /> Methanol 513100 800 ND 6 84 mg/l 50-150 85 5 50 20 9 <br /> 5 00 4 33 55-157 86 6 <br /> Surrogate 1 pentanol 4 36 " 57-170 87 2 <br /> Surrogate !pentanol(dbwax) 500 <br /> 10 *Refer to end of report for text of notes and definitions <br /> Sequoia Analytical-Sacramento <br /> Page 8 of 9 <br />