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Sequoia 580 Chesapeake Drive Redwood City CA 9406 - '(415) 364-9600 FAX(415) 364-9233 <br /> W/404 N.Wiget Lane Walnut Creek,CA 94598�r.14(510) 988.9600 FAX(510)988.9673 <br /> �1,�► Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> GTEL >::::: <br /> hi <br /> c to <br /> 1l nt::P.r...:.;.e <br /> C e o e>t I D:':>:::>:: <br /> e on...... Stoc on ...... <br /> 1 <br /> #9-0557 <br /> I <br /> 4211 May Ave. Matrix: Solid <br /> Wichita, KS 67209 <br /> Attention: Justin Ward QC Sample Group: 5120416-418 Reported: Dec 29, 1995;: <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#: GC121495 GC121495 GC121495 GC121495 <br /> 8020EXA 8020EXA 8020EXA 8020EXA <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: N. Beaman N.Beaman N. Beaman N. Beaman <br /> MS/MSD #: 5120408 5120408 5120408 5120408 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Analyzed Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Instrument I.D.#: HP-4 HP-4. HP-4 HP-4 <br /> Conc. Spiked: 0.40 mg/kg 0.40 mg/kg 0.40 mg/kg 1.2 mg/kg <br /> Result: 0.39 0.42 0.44 1.3 <br /> MS % Recovery: 98 105 110 108 <br /> Dup. Result: 0.39 0.41 0.43 1.3 <br /> MSD % Recov.: 98 93 108 108 <br /> RPD: 0.0 2.4 2.3 0.0 <br /> RPD Limit: 0-20 0-20 0-20 0-20 <br /> LCS #: 2LCS121495 2LCS121495 2LCS121495 2LCS121495 <br /> Prepared Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Analyzed Date: 12/14/95 12/14/95 12/14/95 12/14/95 <br /> Instrument I.D.#: HP-4 HP-4 HP-4 HP-4 <br /> Conc. Spiked: 20Ng/L 20Ng/L 20Ng/L 60Ng/L <br /> LCS Result: 20 21 21 66 <br /> LCS % Recov.: 100 105 105 110 <br /> LCS <br /> Control Limits 55-145 47-149 47-155 56-140 <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> JKe <br /> I.{ANALYTICAL, #1271 preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recover is to be used to validate the batch. <br /> et Limer **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference <br /> ct Manager <br /> 5120416.GTW <2> <br /> m <br />