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GeoAnalytical Laboratories, Inc. <br /> 1405 Kansas Avenue Modesto,CA 95351 Phone(209)572-0900 Fax (209)572-0916 <br /> Report# Q078-08 QC REPORT <br /> San Joaquin County Environmental Health Dates Analyzed 3/23/043/24/04 <br /> 304 E.Weber 3rd Floor <br /> Stockton CA 95202 <br /> %Recovery Duplicate % RPD Blank <br /> Analyte Batch # Method Recovery <br /> 1,4-Dichlorobenzene SV00099 8270 TCLP 68.2 65.8 3.5 ND <br /> n-Nitrosopropylamine 64.8 64.8 0.0 ND <br /> 1,2,4-Trichlorobenzene 65.3 63.3 3.1 ND <br /> Acenaphthene 115.1 108.1 6.2 ND <br /> 2,4-Dinitrotoluene 82.7 79.5 3.9 ND <br /> Pyrene 86.5 86.7 0.2 ND <br /> Phenol 27.5 26.8 2.6 ND <br /> 2-Chlorophenol 71.2 68.8 3.4 ND <br /> 4Chloro-3-methylphenol 64.1 69.5 8.0 ND <br /> 4-Nitrophenol 55.5 55.9 0.7 ND <br /> Pentachlorophenol 102.8 100.5 2.3 ND <br /> Comments: <br /> Not enough sample to run MS,MSD. <br /> y ct, <br /> Gregory Merciadis Donna Keller <br /> Chemist Certification # 1157 Laboratory Director <br />