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819 Sinker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> •i Sequoia (916)921 9600 <br /> FAX (916)921 0100 <br /> Analytical ,v, ,sequotalatis COi„ <br /> S -COR Inti-ni itlonal - Rancho Cordo% 1 Proj cd ARCO 4491 Stoulton CA <br /> 3()17 lalgor� Road Multi- 100 Prulid Nuinb�r N/A 13/0Re1wted <br /> Etanc hu Cordo%a CA 95670 1'r0ik d M rn tgc,r Kusty Bi-okosk% 12/13/00 O8 2K <br /> Volatile Organic Compounds by EPA Method 8260A - Quality Control <br /> Sequoia Analytical - Sacramento <br /> RLlxmmn, Spil.� Suun� °"R1 C RPll <br /> 1111.1 tc RLSUli %,I RLSult 7aR]-C Lunns RPD Ltnut NOIR% <br /> Batch 0120112 - EPA 5030B {P/Tj <br /> LCS Dup(0120112-BSD1) PrLparad& Anahic,d 12/11/00 <br /> 13LIILt11L -A 4 200 ug/l �0 0 109 70-130 3 7-1 25 <br /> Chlorohutctnt �1 0 200 50 0 102 70-130 278 25 <br /> 1 I-DO11oroethtine 55 2 200 �0 0 110 70-130 129 25 <br /> 101Ua_nC 548 200 �0 0 110 70-130 1 84 25 <br /> Trichlorot thent. 494 200 -,00 98 8 70-130 4 55 2�) <br /> Surrogate DibromohuoramethaM )4 2 -)00 108 70-130 <br /> Surrogate 12-DC4 dJ 528 )0 0 106 70-130 <br /> Surrogate Toluene-d8 548 >00 110 70 130 <br /> Surrogate 4-BFB 536 Soo 107 70-130 <br /> Matrix Spike(0120112-MSI) Source S012054_-_0_I _ Prepared&Analyzed 12/11/00 <br /> B - _ 540 200 4 ug/1 500 ND 106 60-140 <br /> Cnzene 508 200 500 ND 102 60-140 <br /> 1 i-Dichloroethene 620 200 500 ND 123 60-140 <br /> Toluene 544 200 500 ND 107 60-140 <br /> Tnchloroethenc 233 200 500 189 880 60-140 A-01 <br /> Surrogate Dibromofluoromethane 530 "f 500 106 70-130 <br /> Surrogate I 1-DCA-d4 314 500 103 70-130 <br /> Surrogate Toluene-d8 532 500 106 70-130 <br /> Surrogate 4-BFB 536 500 107 70-130 <br /> Matra Spike Dup(0120112-MSDI) Source S01205"I Prepared&Analyzed 12/11/00 <br /> Benzene 572 200 ugfl 50 0 ND 112 60-140 5 76 25 <br /> Chlorobenzenc 51 2 200 Soo ND 102 60-140 0 784 25 <br /> 1,1-Dichloroethene 64 6 200 500 ND 128 60-140 4 11 25 <br /> Toluene 554 200 Soo ND 109 60-140 182 25 <br /> Trichloroethene 238 200 Soo 189 980 60-140 2 12 25 A-01 <br /> Surrogate Drbromofluoromelhane 542 500 108 70-130 <br /> Surrogate I 1-DCA-d4 528 500 106 70-130 <br /> Surrogate 7'oluene-d8 534 500 107 70-130 <br /> Surrogate 4-BFB 528 500 106 70-130 <br /> is Analytical - Sacramento The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 23 of 25 <br />