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L ' <br /> Sequoia 680 Chesapeake Drive Redwood Cry,CA 94063 (415) 364 %W FAX(415)364 9233 <br /> Analytical 404 N uv;get Lane Walnut Creek,CA 94598 (510) 988-96W FAX(510)988-9673 <br /> 819 Sinker Avenue,Swte 8 Sacramento CA 95834 (916) 921-96W FAX(916)921-0I00 <br /> mus r+aa <br /> IN <br /> fugro West, Inc v r Client Protect!t5 Shed, 420 W"Kettiernan Lane, i_odi,"CA <br /> 1050 Melody Lane, Ste 160 Matra Sod <br /> Roseville, CA 95678 <br /> Attention David L Poulsen QC Sample Group 5080296, 98, 300, 303-4, 306-8 Reported Aug 21, 1995 <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' V Owens V Owens V Owens V Owens <br /> Concentration <br /> Spiked: 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg <br /> LCS Batch# LCS081695 LCS081695 LCS081695 LCS081695 <br /> Date Prepared 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Date Analyzed 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Instrument i D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> • LCS % <br /> Recovery* 98 101 95 9a <br /> Control Limits 75-125 75-125 75-125 75-125 <br /> ., ..., ? .++ ';{„c fi^..Ff r s i q ter.}ec r n.,.`�.w4 s y„rr 4,a+,,.,....n`y S..w.k x s.,r.cv. �. n n t +���r y r :or.,.�,r r. •}v r wn; <br /> v SN n ++ v n w. v4rti vm wluk •SSC G.u{ w1r�r$"� h`Lw ..4R4 v v�vtr r ++ n v0.ww4^ }`'vr"s <br /> MS/MSD <br /> Batch#' 5080296 5080296 5080296 5080296 <br /> Date Prepared. 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Date Analyzed: 8/16/95 8/16/95 8/16/95 8/16/95 <br /> Instrument I.D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> % Recovery <br /> Matrix Spike <br /> Duplicate% <br /> Recovery' <br /> Relative% <br /> Difference: <br /> UOIA ANALYTIC L Please Note <br /> / The LCS is a control sample of known,interferent free matnx 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/MSD's are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results "Matrix interference <br /> Project Manager <br /> 5080296FUG <3> <br />