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Sequoia 680 Chesapeake Dave Reduood Gsy CA 94063 (415) 364 96DD FAX (415)364 9._3
<br /> 1900 Bata Avenue Suite L Concord GA 94570 (510) 686 9600 FAX (510)686 56E9
<br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)971 010D
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<br /> -West Client Proiect ID:Welie� Drive, Stockton, CA
<br /> Botelho Dr, Suite 260 Matra. Soil
<br /> Inut Creek, CA 9459E
<br /> ntion. .liEl Ouillan DC Sample Goup X409-0568 Reported. Sep 15, 1994
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<br /> _QUALITY CONTROL DATA REPORT
<br /> ANALYTE Ethyl-
<br /> Benzene Toluene Benzene Xylenes
<br /> ' Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
<br /> Analyst: C Chapman C Chapman C Chapman C Chapman
<br /> concentration
<br /> Spiked: 0.20 mg/Kg 0 20 mg/Kg 0.20 mg/Kg 0 60 mg/Kg
<br /> LCS Batch#: LCS091494 LCS091494 LCS091494 LCS091494
<br /> ate Prepared: 9/14/94 Q 14 94 9/14/94 9 14 94
<br /> P1 1 ! !
<br /> Date Analyzed 9/14/94 9/14/94 9/14/94 9/14/94
<br /> 11trument I D #: GCHP-1 GCHP-1 GCHP-1 GCHP-1
<br /> LCS %
<br /> k
<br /> Recovery: los los 110 105
<br /> troi Limits: 75.125 75-125 75.125 75-125
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<br /> MS/MSD
<br /> Batch #: 4090488 A-D 4D90468 A-D 4090468 A-D 4090488 A-D
<br /> ate Prepared. 9/14/94 9/14/94 9/14/94 9/14/94
<br /> Date Analyzed 9/14/94 9/14/94 9/14/94 9/14/94
<br /> 1
<br /> 1trument I D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1
<br /> Matrix Spike
<br /> Recovery: 90 95 95 98
<br /> Matrix Spike
<br />' Duplicate %
<br /> Recovery: 90 95 95 93
<br /> Relative %
<br /> Difference: 00 00 00 52
<br /> Please Note
<br /> 0IJOIA ANALYTICAL The LCS is a control sample of known,rnterierent free matrix that is analyzed using the same reagents,
<br /> preparation and anafytiral methods employed for the samples The LCS%recovery data is used for
<br /> validation of sample batch results Due to matrix effects,the OC limas for MS/MSDs are advisory only
<br /> .:
<br /> ad, and are not used to accept or re�ecf batch results
<br /> da C
<br /> Schneider
<br /> Project Manager 4090568 ERM <2>
<br /> 1
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