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sl <n, (► <br /> Sequoia 680 Chesapeake Drive Redwood Cuy CA 94063 (415) 364 9600 FAX (415) 364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510) 988-9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921-0 100 <br /> war <br /> xw fv , ,.,,, , r , ...,,,� .,.,, r<"; r .. � .•t-, ,, � ` '' n 7-0137 <br /> .� <br /> Fugro West, Inc h v Client Project ID r 9347-1044, E�oco <br /> .1050 Melody Lane, Suite 169 Matrix Liquid 3 <br /> ;Roseville, CA 95678 Reported Jun 7, 1995., <br /> Attention Paul Graff Work Order # 9595C14-05 k t r ,lr nryy r <br /> Stn,, ] ` } r rt ♦ ry n .v.v r m N .+ <br /> ',, t ,-yr ♦y rix N",.v ..r.r4`v. vN., vii'..r ao . „ v..,rv,„r'rr r vh ,nr , <br /> cra v <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl xylenes <br /> Benzene <br /> QC Batch# GCO52395BTEX02A GCO52395STEX02A GCO52395BTEX02A GCO52395BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5430 EPA 5030 <br /> Analyst, J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD # 950580401 950580401 950580401 950580401 <br /> Sample Cone. ND NO ND NO <br /> Prepared Date 5/23/95 5/23/95 5/23/95 5/23/95 <br /> Analyzed Date 5/23/95 5/23/95 5/23/95 5/23/95 <br /> Instrument I D #' GCHP2 GCHP2 GCHP2 GCHP2 <br /> Cone. Spiked. 10Ng/L 10pg/L 10pg/L <br /> Result 10 10 10 31 <br /> MS % Recovery- 101 102 104 104 <br /> Dup. Result 95 95 9 4 28 <br /> MSD % Recov. 95 95 94 94 <br /> RPD 61 71 10 10 <br /> RPD Limit. 0-50 0-50 0-54 0-50 <br /> LCS # - - - <br /> Prepared Date, <br /> Analyzed Date. <br /> Instrument LD <br /> Cone Spiked. - - <br /> LCS Result. - - - <br /> LCS % Recov - - - - <br /> MS/MSD <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> . The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantifies of specific compounds and subjected to the entire analytical procedure If <br /> Lnn <br /> P/l�n� f� the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> {i t C lul/ interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPO-Relative 96 Difference 9505C14 FFF <3> <br />