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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> ® (916)921-9600 <br /> AFAX 921-0 100 <br /> Analytical <br /> www sequoquoialabs corn <br /> ratus Environmental Protect ARCO 2168, Stockton, CA Sampled 8/30/00 <br /> 3330 Cameron Park Drive, Ste 550 Project Number NIA Received 9/l/00 <br /> Cameron Park,CA 95682 Project Manager Jay Johnson Reported 9/2I,227/00 y <br /> �"�� r �'�;.1'!'��..=v"`�� 4 r^- +,r,�rte•,� e.. wz,. u � v ti. rr "E" .-`` ,'�° Ari; "mom;Nr- � J�= <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0090108 Date Prepared 9112100 Extraction Method EPA 5030B Me0H <br /> Blank 0090108-BLK1 <br /> Purgeable Hydrocarbons 9/12/00 ND ug/1 500 <br /> Surrogate a,a,a-Try7uorotoluene 11 100 100 600-140 100 <br /> LCS. 0090108-BSI <br /> Purgeable Hydrocarbons 9/12/00 600 679 ug/l 700-130 113 <br /> Surrogate a,a,a-Trifluorotoluene 11 100 101 600-140 101 <br /> Matrix Spike 0090108-MSI 5009009-04 <br /> Purgeable Hydrocarbons 9/12/00 600 ND 648 ug/1 600-140 108 <br /> Surrogate a,a a-Trzuorotoluene 100 952 600-140 952 <br /> Matrix Spike Dup 0090108-MSD1 5009009-04 <br /> Purgeable Hydrocarbons 9112/00 600 ND 632 ug/I 600-140 105 250 282 <br /> 01hgate a,a a-Trifluorotoluene 100 902 600-140 902 <br /> 0090109 Date-Prepared 9/12/00 Extraction Method EP4 5030B(MeQA) <br /> Blan'. 0090109-BLKI — <br /> Purgeable Hydrocarbons 9/12100 ND ug/1 500 <br /> Surrogate a a a-Trifluol otoluene 11 100 850 600-140 850 <br /> LCS 0090109-BSI <br /> Purgeable Hydrocarbons 9/12/00 600 599 ug/1 700-130 998 <br /> Surrogate a a a-Trifluorotoluene 11100 897 600-140 897 <br /> Matrix Spike 0090109-MSI 5009009-02 <br /> Purgeable Hydrocarbons 9112/00 600 ND 573 ug/1 600-140 955 <br /> Surrogate a,a a-Trifluorotoluene 11100 781 600-140 781 <br /> Matrix Spike Dup 0090109-MSD1 5009009-02 <br /> Purgeable Hydrocarbons 9/12/00 600 ND 58 3 ug/1 600-140 972 25 0 176 <br /> Surrogate aa a-Triuorotoluene 11100 798 01600-140 798 <br /> Batch 0090136 Date Prepared 9113100 Extraction_Method EPA 5030B(MeQH) <br /> Blank 0090136-BLKI <br /> Purgeable Hydrocarbons 9/13/00 ND ug/1 500 <br /> Surrogate a'2,a-Trifluorotoluene tf 100 988 rr600-140 988 <br /> LCS 0090136-BSI <br /> Purgeable Hydrocarbons 9/13/00 600 574 ug/I 700-130 957 <br /> Surrogate a,a,a-Tnfluorotoluene 100 102 600-140 102 <br /> la Analytical- Sacramento *Refer to end of report for text of notes and definitions <br /> ,gam Page 14 of 22 <br />