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Sequoia __ 690 Chesapeake Drive Redwood C",CA 4, (415) 964.9604 FAX(417) 364.9213 <br /> a- ) 404 N.WI6et Lux Walnut Creek,CA 94S99 (510) 988.9600 FAX(510)988.9673 <br /> Analytical 919 Striker Avenue,Sulte 8 Sacramento,CA 95934 (916) 921.9600 FAX(916)921.0100 <br /> Y vw \\�\\\`"m \\\ <br /> eO eS nC ei1t�r0rWtw <br /> �L,Tosco <br /> r 3164 Gold Camp Dr„ Sulte 240 Matrix: Soil <br /> Rancho Cordova, CA 95670 j <br /> Attentlon: Greg Gurss OC Sample Group 705-0337 Reported: May 21, 1997 <br /> :,f:j::}., ..>r '• ,. '� :'X. r.:: .o...;.�. .•..r:.r s::.r:,•.::::,x::;:{a ?vf/"'�:�? 5'J ,'�\ <br /> ,:R`\\�� {°'\\tilt\\\: ,•::./%/./..Fl-%1/r::..,.:.o%!.�'�'.�`�\\\��".�:.....\\\\.:.:,,:.\\\\\\\ •.Hr/"/.�.\� <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel 08G <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 DHS LUFT EPA 5520 EF <br /> Analyst: C. Lee C.Lee C.Lee C.Lee C.Lee SP/LM <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg 7.5 mg/kg 500mg/kg <br /> LCS Batch#: LCS051597 LCS051597 LCS051597 LCS051597 LCS051997 LCS051997 <br /> Date Prepared: 05/15/97 05/15/97 05/15/97 05/15/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/15/97 05/15/97 05/15/97 05/15/97 05/19/97 05/19/97 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-3B BAL-4 <br /> LCS % <br /> Recovery: 100 101 105 104 96 86 <br /> Control Limits: 70-130 70-130 70.130 70-130 60-140 70-130 <br /> ........:.. raw:.-. ,-. nvn..,..,..:::,,.v,v,u..::.:• .x..:v::.vnv.,v:nv.:v.vv.v.:_;:,v::.........:::::...................y....fi} .{{, -: ..... _ <br /> ..... ....................::...r.:.........\::..:::.:.-:.-....:..V:.... - - - - .- <br /> MS/MSD <br /> Batch#: 70500287 70500287 70500287 70500287 7050336 7050334 <br /> Date Prepared: 05/15/97 05/15/97 05/15/97 05/15/97 05/19/97 05/19/97 <br /> Date Analyzed: 05/15/97 05/15/97 05/15/97 05/15/97 05/19/97 05/19/97 <br /> Instrument l.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-3B BAL-4 <br /> Matrix Spike <br /> % Recovery: 102 103 106 106 101 71 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 102 105 105 103 73 <br /> Relative% <br /> Difference: 2.0 0.98 0.95 0.95 2.0 2.8 <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 /> preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the QC limits for MS/MSG's are advisory only <br /> Edana M. Fruciano and are not used to accept or reject batch results. <br /> Project Manager/Sacramento Labors ory <br /> 7050337•GSI <9> <br />