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819 Striker Avenue,Suite 8 <br /> 41) Sequoia Sacramento CA 95834 <br /> (916)921-9" <br /> Analytical www <br /> e 921-0100 <br /> sequoquoialabs cam <br /> Stratus Environmental Project ARCO 2168, Stockton,CA Sampled 6122/00 <br /> 3330CameionPark Drive-, Ste 550 Project\umber N/A Received 6/23/00 <br /> Cameron Pari.,CA 95682 Project Manager Jay Johnson Reported 7/11/00 <br /> Total Purgeable Hydrocarbons by DHS LUFT/Quality Control <br /> Sequoia Analytical- Sacramento <br /> Date Sprke Sample QC Reporting Lima Recov RPD RPD <br /> Analyte Analyzed Level Result R�.sult Lnzts Recov 1,tmrts % Lrmtt % Notes* <br /> Batch 0070013 Date Prepared 6/29/00 Extr action Method EPA 50308 111e0 <br /> 81 an k 0070013-BLK1 <br /> Purgeable Hydrocarbons 6/29/00 _ ND ugll 500 <br /> Surrogate a a a-Trrfluor otoluene 11 /00 102 600-140 102 <br /> LCS 0070013-BSI <br /> Purgeable Hydrocarbons 6/29/00 600 b0 4 ug/1 700-130 101 <br /> Surrogate a a,a-Trifluorotoluene — 100 <br /> 104 600-140 104 <br /> Matrix,Spike 0070013-MSI 5006318-02 <br /> Purgeable Hydrocarbons 6/29/00 600 ND 58 2 ug/l_ 600-140 970 <br /> Surrogate a a a-Trzfluorotoluene 10 011 7 600-140 117 <br /> Matrix Snilcc Dun 0070013-MSD1 5006318-02 <br /> Purgeable Hydrocarbons 6129/00 60 0 ND "8 0 ug/l 600-140 Q67 250 0 310 <br /> We a a a-Trrfluvrotaluene —" 100 118 600-140 118 -- <br /> Batch 0070061 Date Prepared 7/5/00 Extraction Method EPA 5030E Men <br /> Blank 0070061-BLK I <br /> Purgeable Hydrocarbons 7/5/00 _ ND ug/1 500 <br /> Sur r agate a a a-Trzfluor otoluene --7'--J00 - 9 78 �� 600-140 978-- <br /> LCS <br /> 78LCS 0070061-BSl <br /> Purgeable Hydrocarbons 7/5100 600 _ _ 61 1 ug/l 700-130 102 <br /> Sur rogate a a a-Trzfluorotoluene 100 103 60 0-140 103 <br /> Matrix Spike 0070061-MSI S006307-01 <br /> Put geable Hydrocarbons 7/5100 600 ND 62 3 ug/l 600-140 104_ <br /> Surrogate a a a-Trrfluorntoluene 11 ]D 0 953 60 0-140 95 3 <br /> Matrix Spike Dun 0070061-MSDI 5006307-01 <br /> Purgeable Hydrocarbons 7/5/00 _60 0 ND 63 8 UCA 600-140 106 _ 250 190 <br /> Surrogate a a a-Trzfluorotoluene 10 0 - _ g ¢ 11 600- 944 <br /> Batch 0070063 Date Pre ared 716/00 Extraction 1Zethod EPA 5030B(MeOH) <br /> Blank 0070063-BLK1 <br /> Purgeable Hydrocatbons 7/6/00 'SID ug/l 500 <br /> Suri agate a,a,a-Trrfluorotoluene 100 9 82 60 0-140 98 2 <br /> LCS 0070063-BSI <br /> Purgeable Hydrocarbons 7/6100 600 58 7 ug/l 700-130 978 <br /> Surrogate a a a-Trzfluorotoluene 100 102 �" 600-140 lOZ <br /> AW Analytical-Sacramento *Refer to end of repos t for text of notes and definitions <br /> Page 8 of 15 <br />