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American Ernvronnientul Nenrnrk American Envivomnennrl Nemnrk PAGE 3 H2OGEOL PAGE 4 SAMPLE ID: CCW C-WOT-1 DATE SAMPLED: 09/28/94 AEN LAB NO: 9409387-01 DATE RECEIVED: 09/28/94 AEN WORK ORDER: 9409387 REPORT DATE: 10/22/94 CLIENT PROJ. ID: - AEN (CALIFORNIA) METHOD/ REPORTING DATE QUALITY CONTROL REPORT ANALYTE CAS# RESULT LIMIT UNITS ANALYZED AEN JOB NUMBER: 9409387 Carbon Tetrachloride 56-23-5 NO 5 ug/kg 09/29/94 CLIENT PROJECT 10: Chlorobenzene 108-90-7 NO 5 ug/kg 09/29/94 Chloroethane 75-00-3 NO 5 ug/kg 09/29/94 2-Chloroethyl Vinyl Ether 110-75-8 NO 5 ug/kg 09/29/94 Chloroform 67-66-3 NO 5 ug/kg 09/29/94 Quality Control and Pro.iect Summary Chloromethane 74-87-3 NO 5 ug/kg 09/29/94 Dibromochloromethane 124-48-1 NO 5 ug/kg 09/29/94 All laboratory quality control parameters were found to be within established 1.2-Dichlorobenzene 95-50-1 NO 5 ug/kg 09/29/94 limits. 1.3-Dichlorobenzene 541-73-1 NO 5 ug/kg 09/29/94 1,4-Dichlorobenzene 106-46-7 NO 5 ug/kg 09/29/94 Oichlorodifluoromethane 75-71-8 NO 5 ug/kg 09/29/94 1.1-Dichloroethane 75-34-3 NO 5 ug/kg 09/29/94 1.2-Dichloroethane 107-06-2 ND 5 ug/kg 09/29/94 1,1-Dichloroethene 75-35-4 NO 5 ug/kg 09/29/94 cis-1,2-Dichloroethene 156-59-2 ND 5 ug/kg 09/29/94 trans-1.2-Dichloroethene 156-60-5 NO 5 ug/kg 09/29/94 1.2-Dichloropropane 78-87-5 NO 5 ug/kg 09/29/94 oefinit(ona cis-1.3-Dichloropropene 10061-01-5 NO 5 ug/kg 09/29/94 Laboratory Cortrol Seeple(LCS)/Method Spike(nt control -eeples of kttovn cospesitlon. LCS and Method Spike trans-1,3-Dichloropropene 10061-02-6 NO 5 ug/kg 09/29/94 date are used to validate batch analytical ree,tts. Methylene Chloride 75-09-2 NO 5 ug/kg 09/29/94 1.1.2.2-Tetrachloroethane 79-34-5 NO 5 ug/kg 09/29/94 M.W. Splto the August of i ..ape.procedure. or -olid/ .Ith added wake dept of QCdaspecific co Wp I. and Tetrachloroethene 127-18-4 NO 5 ug/kg 09/29/94 ami«tea`°th.entire e.1 yt1"` proved r.. M.erla pike and matrix spike dpuea.«eat..r..e 1.ory. 1.1.1-Trichloroethane 71-55-6 ND 5 ug/kg 09/29/94 Method Rlarnk: An analytical control consisting of sit reagents, Internal sted.rds, and surrogate st-ward+ 1.1.2-Trichloroethane 79-00-5 NO 5 ug/kg 09/29/94 carried through the entire-naly0c-1 process. used t°.eritor laboratory background and re-gent contamination. Trichloroethene 79-01-6 ND 5 ug/kg 09/29/94 Not Detected(MO)L Met detected at or-boys the reporting limit. Trichlorofluoromethane 75-69-4 NO 5 ug/kg 09/29/94 1.1.2Trichlorotrifluoroethane 76-13-1 NO 5 ug/kg 09/29/94 Relative percent Difference WOIM An indication of method precision based on dpticate-nalys(s. Vinyl Chloride 75-01-4 NO 5 ug/kg 09/29/94 Reporting 1.1,a(t (RLI: The lonnest concentration routinely d.termlnad during l.boratery operations. Th•RL 1s generally 1 to 10 tl— the Method Oet ection timet (MDU. Reporting limits ere metr1., method, and analyte Reporting limits for gasoline/BTEX and diesel were dependent and take Into account on dilution.perforsed as part of the analysis. elevated due to high levels of target compounds. I Surrogates: Organic coRpouds%Alch are similar to analytes of interest In chmiral behavior,but are not food Sample run at dilution. In envlrormmntat ■a�ln. Surrogates are added to all blanks, calibration and check st.rdards, —plea, and -piked sarples. Surrogate recovery Is Monitored on en Indieesiot of acceptable saeple preparation and NO - Not detected at or above the reporting limit Inat,ueental performerce. - Value above reporting limit Ot Surrogates diluted out. 01 Indicates result outside of established laboratory OC limits.