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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phonek (916) 773-3664 Fax#: (916) 773-4784 <br /> ANALYSIS REPORT <br /> Attention: Mr. Vernon P.Elarth Date Sampled: 08-06-97 <br /> VERSAR Date Received: 08-07-97 <br /> 7844 Madison Ave.,Ste 167 Date Analyzed: 08-19-97 <br /> Fair Oaks.CA 95628 <br /> Project: 3622-50I/Bank of America Ripon Matrix: Water <br /> Sample ID: BH-7 <br /> Lab ID: W0897260 <br /> Reporting Measured Reporting Measured <br /> Limit Value Limit Value <br /> 624 GCMS (ug/L) (ug/L) 624 GCMS (ug/L) (ug/L) <br /> Dichlorodifluoromethane 0.5 ND 2-Butanone 0.5 ND <br /> Chloromethane 0.5 ND Bromodichloromethane 0.5 ND <br /> Vinyl Chloride 0.5 ND Cis-1,3-Dichloropropene 0.5 ND <br /> Bromomethane 0.5 ND Trans-l,3-Dichloropropene 0.5 ND <br /> Chloroethane 0.5 ND 1.1,2-Trichloroethane 0:5 ND <br /> Trichlorofluoromethane 0.5 ND Trans-l,4-dichloro-2-butene 0.5 ND <br /> Acetone 20 ND Toluene . 0.5 ND <br /> 1.1-Dichloroethene 0.5 ND Tetrachloroethene 0.5 ND <br /> Methylene Chloride 6 ND 2-Hexanone 0.5 ND <br /> Carbon disulfide 0.5 ND 4-Methyl-2-pentanone 0.5 ND <br /> Trans-1,2-Dichloroethene 0.5 ND Chlorobenzene 0.5 ND <br /> 1,1-Dichloroethane 0.5 ND Ethylbenzene 0.5 ND <br /> Chloroform 0.5 ND M+P-Xvlene 0.5 ND <br /> 1.2-Dichloroethane 0.5 ND O-Xylene 0.5 ND <br /> Iodomethane 0.5 ND Styrene 0.5 ND <br /> Dibromochloromethane 0.5 ND Bromoforrn 0.5 ND <br /> 1,1,1-Trichloroethane 0.5 ND 1.1,2,2-Tetrachloroethane 0.5 ND <br /> Carbon Tetrachloride 0.5 ND 1,3-Dichlorobenzene 0.5 ND <br /> Benzene 0.5 ND 1,4-Dichlorobenzene 0.5 ND <br /> Trichloroethene 0.5 ND 1,2-Dichlorobenzene 0.5 ND <br /> 1,2-Dichloropropane 0.5 ND <br /> ppb=parts per billion=ug/L=micrograms per liter <br /> ND =Not detected. Compound(s)may be present at concentrations below the reporting limit <br /> Surrogate Recoveries - 1.2-Dichloroethane-d4 107% <br /> TQtuene-d8 1037c <br /> 4-Bromofluorobenzene 94% <br /> ANALYTICAL PROCEDURFS <br /> Organic Volatiles are measured using EPA Method 624 which utilizes a purge and trap interfaced to a gas chromatograph(GC)equipped with a <br /> mass spectrometer. <br /> _ 08-19-97 <br /> Lab ratory Representative Date Reported <br /> EXCELCHEM ENVIRONMENTAL LABS IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> ICeruficauon Na 21191 <br /> 6 <br />