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[ N t a R P 4 R 0. t F 4 � REPORT' ®F �A100R�TORY ANA�.YStS <br /> iNf lSSUa0.rlC( er (IUA11rT <br /> Mr Janes Jacobs QUALITY CONTROL DATA November 01 , 1991 <br /> PACE Pro3ect Number 411010507 <br /> Page 33 <br /> Client Reference Exxon 7--3330 <br /> VOLATILE ORGANICS, EPA METHOD 8240 GC/MS <br /> Batch 70 0691970 <br /> ra Samples 70 70 0098939, 70 00989407, 70 0098955, 70 0098963, 70 009897, 70 o098904, 70 oo98912, 70 0 <br /> 4 � <br /> 1 <br /> METHOD BLANK Method <br /> Parameter Units MOL Blank <br /> VOLATILE ORGANICS, EPA METHOD 8240 GC/MSug/k9 5 ND <br /> a� Tetrachloroethene ug/kg 5 ND <br /> Chlorobenzene ug)tk 5 NO <br /> Ethylbenzene ug/kg 5 NO <br /> Si omoform ug/kg 5 NO <br /> Xylene(s) Total 5 NO <br /> W <br /> Styrene u9/kg <br /> 1 ,1,2,2,-Tetrachloroethane ug/kg <br /> 5 NO <br /> 1 ,3-Dichlorobenzene 5 NO <br /> ug/kg 5 NO <br /> 1 ,4-Dichlorobenzene• ug/kg 5 NO 1,2-Dichlorobenzene <br /> 1,2-Dichloroethane-d4 (Surrog Recovery 98%8% <br /> Toluene-dB (Surrogate Recovery) <br /> 4-Bromofluorobenzene (Surrog Recovery) <br /> 100% <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE Reference Dupl <br /> Units MDL Value _ Recv Recv RPD <br /> Parameter u gg 5 5p 80% 76% —59`0 <br /> 1,I-D fiTic oroethene ug/kg 5 50 106% 108% 1% <br /> Benzene ug/kg 5 50 90% 92% 2% <br /> Trichloroethene ug/kg 5 50 100% 96% 4% <br /> Toluene ug/kg 5 50 98% 96% 2% <br /> Chlorobenzene <br /> MDL Method Detection Limit . <br /> NO Not detected at or above the MDL <br /> RPD Relative Percent Difference <br /> 11 llugnal Dimeoffices Sarnng M @ polij Minnesota Charon North Carolina An Equal opportunity Employer <br /> Tampa Florida Ashasila North Corchns <br /> Nava+o CA 94949 tows City Iowa New Ytrk,Now York <br /> TEL 415 983 6100 San Francisco Csldmnua Pittsburgh Pe+rRsy WANTS <br /> FAX 415 883 2673 Kansas City Messoun Gerrvar Colorado <br /> Las Angeles Cablwnra <br />