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1455 McDowell Blvd North Ste D <br /> Sequoia Petaluma,CA 94954 <br /> 4 (707)792-1865 <br /> ico 0 <br /> !D— Analytical FAX(707)792-0342 <br /> Cambria Environmental Project Equiva 10d Sampled 12/14/99 to 12/15/99 <br /> 270 Perkins St Project Number 2494 Fremont St,Stockton Ca Received 12/16/99 <br /> Sonoma,CA 95476 Project Manager Bob Perlowski Reported 12/30/99 <br /> Volatile Organic Compounds liykEPA Method 8260AIQ1Whty Cotit`�'ol� <br /> ,y H <br /> Se(]16Sia�AnAyti alp z San CailoS <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Anal e Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9120103 Date Prepared 12/21/99 Extraction Method EPA 5030B IP/Tl <br /> Blank 9120103-BLK1 <br /> 1,2-Dibromoethane 12/21/99 ND mg/kg 0100 <br /> 1,2-Dichloroethane ND 0100 <br /> Di-isopropyl ether ND 0 100 <br /> Ethyl tert-butyl ether ND 0 100 <br /> Methyl tert-butyl ether ND 0 100 <br /> Tert-amyl methyl ether ND 0 100 <br /> Tert-butyl alcohol ND 500 <br /> Surrogate 1 2-Drchloroethane-d4 250 263 700-121 105 <br /> Surrogate Toluene d8 250 240 810-117 960 <br /> LCS 9120103-BSI <br /> Methyl tert-butyl ether 12/21/99 250 214 mg/kg 700-130 856 <br /> Surrogate 1,2-Drchloroe1hane-d4 250 278 700-121 111 • <br /> Surrogate Toluene-d8 250 256 810-117 102 <br /> Matrix Spike 9120103-MSI L912174-03 <br /> Methyl tert-butyl ether 12/21/99 250 ND 1 58 mg/kg 600-140 632 <br /> Surrogate 1,2-Drchloroethane-d4 11 250 223 700-121 892 <br /> Surrogate Toluene-d8 ep250 228 810-117 912 <br /> Matrix Spike Dup 9120103-MSD1 L912174-03 <br /> Methyl tert-butyl ether 12/21/99 250 ND 1 85 mg/kg 600-140 740 250 157 <br /> Surrogate 12-Drchloroethane-d4 250 247 700-121 988 <br /> Surrogate Toluene-d8 250 221 810-117 884 <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and detiniflUns <br /> Page 9 of 10 <br />