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819 Striker Avenue,Suite 8 <br /> • Sacramento CA 95834 <br /> S e n u o l a (916)921-9600 <br /> 1 FAX(916)921-0100 <br /> Analytical www sequolalabs corn <br /> icw <br /> Stratus Environmental Project ARCO 2168,Stockton,CA Sampled 8130/00 <br /> 3330 Cameron Park Drive, Ste 550 Project Number N/A Received 911/00 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 9/21,27/00 <br /> ..*rr•� z� -,r- - +, - _r--v- .,,�.,,y�aN r'2;w "'ri - "r.�.;s "„ <br /> r��,��� w� ����rx'�..ra ���IndustrialSolvents tiy-EPA-Metho�'SU1g� (modified)/Qtial►ty�Control,,,;�KK_ C� �����N-- <br /> �;k.� � fry YN?-F``9tfrn�'S� N��ay.--..., r.9; - - yr.a.�,: -•tic a%r,�-"".-�."':,'�.WE.e a-�&�'�1'^'-��:."'""r �'- -xl,,�,�+i E'W},,t' -.w.,� .� � <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0115035 Date Prepared 9115100 Extraction Method EPA 3810 Heads ace <br /> Blank 0115035-BLK1 <br /> Methanol 9116100 ND mg/1 100 <br /> Surrogate I-pentanol 500 457 55-157 914 <br /> Surrogate 1-pentanol(dbwax) Soo 437 57-170 874 <br /> Blank 0115035-BLK2 <br /> Methanol 9/17100 ND mg/1 100 <br /> Surrogate 1-pentanol 500 511 55-157 102 <br /> Surrogate 1 pentanol(dbwax) 500 484 57-170 968 <br /> LCS 0115035-BS 1 <br /> Methanol 9/16/00 800 7 59 me/l 70-130 94 9 <br /> rrogate I pentanol 500 447 <br /> 55-157 89 4 <br /> ogate 1 pentanol(dbwax) 500 526 .57-170 105 <br /> LCS OI15035-BS2 <br /> Methanol 9117/00 800 7 82 mg/l 70-130 97 8 <br /> Surrogate 1-pentanol 500 4 76 55-157 952 <br /> Surrogate I pentanol(dbwax) 500 4 39 57-170 878 <br /> Matrix Snrke OI15035-MS1 MJI0147-01 <br /> Methanol 9116/00 800 ND 653 mg/1 50-150 816 <br /> Surrogate I-pentanol 5 00 3 91 " 55-157 782 <br /> Surrogate I pentanol(dbwax) 5 00 5 73 57-170 115 <br /> Matrix Snake Dun 0I15035-MSD1 MJ10147-01 <br /> Methanol 9116100 800 ND 634 mg/l 50-150 79 3 50 2 95 <br /> Surrogate I-pentanol 5 00 3 22 55-157 644 <br /> Surrogate 1-pentanol(dbwax) 500 3 04 57-170 60 8 <br /> Batch 0117001 Date Prepared 9117/00 Extraction Method EPA 3810 Headspace <br /> Blank 0I17001-BLK1 <br /> Methanol 9117/00 ND mg/l 100 <br /> Surrogate I-pentanol 5—00 --5–]—0 55-157 102 <br /> Surrogate I-pentanol(dbwax) 500 603 57-170 121 <br /> Blank 0117001-BLK2 <br /> Methanol 9119100 ND mg/1 100 <br /> Surrogate 1 pentanol TOO 492 55-157 984 <br /> Surrogate I-pentanol(dbwax) 5 00 639 57-170 128 <br /> Sequoia Analytical-Sacramento *Refer to end of reportfor text of notes and definitions <br /> p Page 20 of 22 <br />