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Analytical Chemists <br /> July 21 , 1997 ORGANIC Quality Assurance Report for sample 733709 <br /> Stephen Valentine <br /> 5232 Hemet Ave <br /> Stockton CA 95207 <br /> BATCH EPA CALIBRATION 0A/QC METHOD QA/QC <br /> Constituent 10 Method Units Type Conc 4 REC AR NOTE Type Conc % REC % REC AR / DIF MAV NOTE <br /> BFB 5L 2A 602/8020 ug/L LCS 20 0 99 5 77-113 Bs 20 0 101 98 2 61-130 3 0 5 8 <br /> 6L 2A 602/8020 u9/L LCS 20 0 93 0 77-113 BS 20 0 97 6 94 0 61-130 3 7 5 8 <br /> 12L 2A 602/8020 ug/L LCS 20 0 97 1 77-113 BS 20 0 94 7 96 7 61-130 2 1 5 8 <br /> Benzene 51- 2A 602/8020 ug/L LCS 20 0 92 0 77-119 BS 20 0 97 5 97 4 75-116 0 2 25 1 <br /> 6L 2A 602/8020 u9/L Les 20 0 85 6 77-119 BS 20 0 94 8 94 2 75-116 0 6 25 1 <br /> 12L 2A 602/8020 ug/L LCS 20 0 92 0 77-119 BS 20 0 95 2 96 0 75-116 0 9 25 1 <br /> Ethyl Benzene 5L 2A 602/8020 ug/L LCS 20 0 94 1 79-120 BS 20 0 97 0 96 2 80-114 0 9 8 1 <br /> 6L 2A 602/8020 ug/L LCS 20 0 87 8 79-120 BS 20 0 93 0 93 0 80-114 0 0 8 1 <br /> 12L 2A 602/8020 ug/L LCS 20 0 92 3 79-120 BS 20 0 91 3 92 5 80-114 1 3 8 1 <br /> Methyl tert Butyl Ether 5L 2A 602/8020 ug/L LCS 20 0 92 1 70 130 BS 20 0 85 2 85 4 61-140 0 2 20 0 <br /> 6L 2A 602/8020 ug/L LCs 20 0 104 70-130 BS 20 0 77 0 87 4 61-140 11 2 20 0 <br /> Toluene 5L 2A 602/8020 ug/L LES 20 0 91 4 81-113 BS 20 0 95 4 94 5 71-120 0 9 24 4 <br /> 6L 2A 602/8020 ug/L LCS 20 0 85 0 81-113 BS 20 0 93 9 92 3 71-120 1 7 24 4 <br /> 12L 2A 602/8020 ug/L LCS 20 0 89 7 81-113 BS 20 0 90 4 91 6 71-120 1 3 24 4 <br /> Xylene 5L 2A 602/8020 ug/L LCS 60 0 91 5 78-118 BS 60 0 96 8 95 6 72-126 1 2 15 4 <br /> 6L 2A 602/8020 ug/L LCS 60 0 85 5 78-118 BS 60 0 92 9 92 4 72-126 0 6 15 4 <br /> 12L 2A 602/8020 ug/L LCS 60 0 90 1 78 118 BS 60 0 91 2 92 3 72-126 1 2 15 4 <br /> TPH-Gar� 0012A 8015M mg/L LCS 2 00 81 0 75-125 MS 1 00 107 110 75-125 3 3 20 0 <br /> 1Q12A 8015M mg/L LCS 20 0 98 2 75-125 MS 10 0 118 113 75-125 4 7 20 0 <br /> 5012A 8015M mg/L LCS 20 0 97 8 75-125 BS 10 0 118 112 75-125 5 3 20 0 <br /> FGL ID = 19970702 N/A => Not Applicable NOTE => See nate indicated below <br /> Notes and comments continued next page <br /> C <br /> F t r <br /> Cor r 10 k"$l ibo,1(Gryf0 fice-&Latorawry Field Office <br /> P O Box 2121853 Ccrporal3on Sit of 2500 Stagecoach Rudd Visalia Cablornia <br /> Santa Paula CA 91061 0272 Stockton CA 95215 TEL (209)734 9473 <br /> TEL (805}659 0910 TEL 1209)342 0181 Mobile (209)737 2399 <br /> FAv r-nn i nl�n f,) r"Ax fpm 7q1 u n- <br /> a <br />