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., Sequoia 68o Chmpeake Dnvt Redwood City CA 94063 (415) 364-9600 FAX(413)364 9233 <br /> 1900 Estes/wenuc,Swte L Concord CA 94520 (510) 686-9600 FAX(510)656-9689 <br /> Analytical 819 Striker Avec,Suite a Sacramento CA 95834 (916) 921 96FAX(916}921.0100 <br /> riu00 <br /> �> a;�; <br /> rount�ter'�echnology client p1111.11 ect b Chevron #9.8632;'Yracy, CA <br /> 1401 Halyard Drive, Suite 140 Matrbc. Soii <br /> West Sacramento, CA 95691 <br /> Attention Jason Fedota DC Sample Group 50502&4, 66, 69,71,7x-75, 78-79 Reported May 19, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANAIWE Hyl- 1� <br /> Benzene Toluene Benzene Xylenes <br /> ti <br /> Method: EPA 6020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst. C Chapman C Chapman C Chapman C Chapman <br /> Concentration <br /> Spiked. o 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 6o mg/kg <br /> LCS Batch#: LCS051695 LCSDS1695 LC$051695 LCS051695 <br /> Date Prepared- 5/16/95 5/16/95 5/16/95 5/16/95 <br /> Date Analyzed: 5/16/95 5/16/95 5/16/95 5/16/95 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS % <br /> . Recovery 95 90 95 93 <br /> Control Limits: 75-125 75-125 75-125 75125 <br /> �V 4, ,. ,,,,-. .; v,, rry ,...,mac„b.w`w`.4i.rC+hcP+s.s'ec'ai.,i`+<:..,,t��,`8w`,-Y ,. } wV.e,.. ,..:a•t,�.....r2,.`brr..x»w.os..i, .,..wxet;""�+Yr:a o+.�n?tnwv...v, � ..w`..%,.ts..'.,a.3 <br /> MS/MSD <br /> Batch#, 5050548 5050548 5050548 5050548 <br /> Date Prepared. 5/16/95 5/16/95 5/16/95 5/16/95 <br /> Date Analyzed. 5/16/95 5/16/95 5/16/95 5/16/95 <br /> Instrument I D.#. GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> % Recovery- so so 85 as <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 95 90 95 95 <br /> Relative % <br /> Difference 17 12 11 11 <br /> SE=QUOIA ANALYTICAL Piease Note <br /> The LCS is a control sample of known interferent tree matrix that is analyzed using the same reagents <br /> ;.:,, <br /> preparation and analytical methods employed for the samples The LCS%recovery date Is used lot <br /> validation of sample batch results Due to matrix effects the QC limits for MS/MSDs are advisory only <br /> LiSchneider and are not used to accept or reject batch results <br /> Prt Manager <br /> 5050264 GF'VY <13> <br /> ct <br />