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ENVIRONMENTAL <br /> Analytical Chemists <br /> August 18, 1995 ORGANIC Quality Assurance Report for sample: 533503 <br /> Ro-Lab American Rubber Company, Inc. <br /> 8830 W. Linne Road <br /> Tracy , CA 95376 <br /> BATCH EPA CALIBRATION QA/QC METHOD QA/QC <br /> [Constituent ID Method Units Type Conc. % REC AR NOTE Type Conc. % REC % REC; AR % DIF MAV NOTE <br /> 1,2-Dichloroethane-d4 03A 624/8240 ug/L LCS 20.0 97.7 40-140 BS 20.0 106 105 40-140 1.1 30.0 / <br /> Toluene-d8 03A 624/8240 ug/L LCS 20.0 99.3 64-139 BS 20.0 94.1 95.9 64-139 .8 30.0 <br /> BFB 03A 624/8240 ug/L LCS 20.0 83.1 50-149 BS 20.0 91.2 93.2 50-149 2.2 30.0 <br /> Acrylonitrile 03A 624/8240 ug/L LCS 5.00 118 50-150 N/A <br /> Benzene 03A 624/8240 ug/L LCS 5.00 95.1 48-135 BS 5.00 99.1 99.4 48-135 0.2 24.0 <br /> Bromodichlorornethane 03A 624/8240 ug/L LCS 5.00 97.3 35-155 <br /> N/A <br /> Bromoform 03A 624/8240 ug/L LCS 5.00 94.0 45-169 N/A <br /> Carbon Disulfide 03A 624/8240 ug/L LCS 5.00 82.5 50-150 <br /> N/A <br /> Carbon Tetrachloride 03A 624/8240 ug/L LCS 5.00 90.5 70-140 N/A <br /> ChLorobenzene 03A 624/8240 ug/L LCS 5.00 118 48-127 BS 5.00 110 116 48-127 5.1 23.0 <br /> 2-ChloroethylvinyL ether 03A 624/8240 ug/L LCS 5.00 94.2 0-305 N/A <br /> Chloroform 03A 624/8240 ug/L LCS 5.00 94.4 51-138 N/A <br /> Chloromethane 03A 624/8240 ug/L LCS 5.00 84.3 0-273 NjA <br /> Dibrotnochloromethane 03A 624/8240 ug/L LCS 5.00 115 53-149 N/A <br /> 1,2-Dichlorobenzene 03A 624/8240 ug/L LCS 5.00 102 18-190 N/A <br /> • 1,3-Dichlorobenzene 03A 624/8240 ug/L LCS 5.00 110 59-156 N/A <br /> 1,4-Dichlorobenzene 03A 624/8240 ug/L LCS 5.00 107 18-190 N/A <br /> Dichlorodifluoromethane 03A 624/8240 ug/L LCS 5.00 90.8 50-150 N/A <br /> 1,1-Dichloroethane 03A 624/8240 ug/L LCS 5.00 90.5 59-155 N/A <br /> 1,2-Dichloroethane 03A 624/8240 ug/L LCS 5.00 98.8 49-155 N/A <br /> 1,1-Dichloroethylene 03A 624/8240 ug/L LCS 5.00 90.7 57-206 BS 5.00 97.9 104 57-206 5.6 54.0 <br /> FGL ID = 19950811 N/A => Not Applicable NOTE => See note indicated below. <br /> Table continued next page . . . . . <br /> Borate <br /> Officea R Laboratory <br /> POffice&Laboratory Field Office <br /> : .Box 272/853 tion Street 2500 Stagecoac Visalia,Ca' <br /> Santa Paula,C.4 93 2 Stockton,CA 95 TEL:(2 09)73 <br /> FA:X(805)659-0910 TEL:(209)942-0 Mobile:(209 7-2399 <br /> FEi (805) 4172 FAX:(209)942-0423 FAX: 209 734-84 <br />