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Sequoia 680 Cheupeake Drive Redvrood aX CA O `i` (413) 364.9600 FAX(415)964-nAI <br /> 404 N,WiQet Lane Walnut Creek,G 94598 (310) 488.4600 FAX(SIO)988.9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,G 95834 (916) 921.9600 FAX(916)921.0100 <br /> ; 1o t�ewes en ra ect osco'- /�/�I <br /> 3164 Gold Camp Dr., Sults 240 Matrix: Soll ' <br /> Rancho Cordova, CA 95670 <br /> Attention: Greg Gurss OC Sample Group 7050335-0336 Reported: May 21, 1997 : <br /> :::i:i:�...;::+:::.,,::::+� ,.,:•,;:•:i::.�.\ \ .,..,..- ... •r. �`vi'::���::{:r::}:C:i::.: r�.. :?l.f ';:�i:.`:'�:'�1.,.titi: `�:r FiC. � �l. \\../ <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.Lee C.Lee C.Lee C.Lee <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg <br /> LCS Batch#: LCS051597 LCS051597 LCS051597 LCS051597 <br /> Date Prepared: 05/15/97 05/15/97 05/15/97 05/15/97 <br /> Date Analyzed: 05/15/97 05/15/97 05/15/97 05/15/97 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS % <br /> a• Recovery: 100 101 105 104 <br /> i <br /> Control Limits: 70-130 70-130 70-130 70-130 <br /> ..............,:.. :::............... <br /> MS/MSD <br /> Batch #: 70500287 70500287 70500287 70500287 <br /> Date Prepared: 05/15/97 05/15/97 05/15/97 05/15/97 <br /> Date Analyzed: 05/15/97 05/15/97 05/15/97 05/15/97 <br /> Instrument I.Q.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> % Recovery: 102 103 106 106 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 102 105 105 <br /> Relative % <br /> Difference: 2.0 0.98 0.95 0.95 <br /> SEQUOIA ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> '' M •I UCnp•+Jt� preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> y validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> Edana M. Fruciano and are not used to accept or reject batch results. <br /> Project Manager/Sacramento Laboratory <br /> 7050335.GSI <15> <br /> rF <br />