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Sequoia 600 Chesapeake Dnvc Redwood Gey CA 94063 (413) 364 9600 FAX(415) 364 9233 <br /> 4q) 1900 6110 Avenue Suite L CorKoed CA 94520 (510) 636%0o FAX(510)696 9699 <br /> Analytical 319 Sinker Avenue Suite 3 Sacramento CA 9504 (916) 921-9600 FAX(916)931-0100 <br /> o.,a�i.ss,,.,.,�a , ,r .w°'...r7'Z�. .wW `40039�+... <br /> roundwaterT`echnology Giem Project ID San�quin Cath iC Cemetary <br /> 1401 Halyard Drive, Suite 140 Matrix Soil <br /> West Sacramento, CA 95691 <br /> Attention Jason i=edota QC Sample Group 5041 1 61-200 Reported May 2, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> ANALWE Ethyl- <br /> Benzene Toluene Benzene Xylenes <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst C Chapman C Chapman C Chapman C Chapman <br /> Concentration <br /> Spiked. 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg <br /> LCS Batch#• LCSO42795 LCSO42795 LCSD42795 LCSD42795 <br /> Date Prepared 4/27/95 4/27/95 4/27/95 4/27/95 <br /> Date Analyzed 4/27/95 4/27/95 4/27/95 4/27/95 <br /> Instrument I.D # GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS% <br /> 0 Recovery 110 95 95 95 <br /> Cartrol Limits 75-125 75-125 75.125 75-125 <br /> MS/MSD <br /> Batch#. 5041151 5041151 5D41151 5041151 <br /> Date Prepared 4/27/95 4/27/95 4/27/95 4/27/95 <br /> Date Analyzed 4/27/95 4/27/95 4/27/95 4/27/95 <br /> Instrument LD #- GCHP 1 GCHP-1 GCHP-1 GCHP t <br /> Matnx Spike <br /> % Recovery 95 85 90 90 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 110 95 100 98 <br /> Relative% <br /> Difference 15 11 10 20 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known rnterierent tree matrix that is analyzed using the same reagents <br /> rr� L�ml _ 1� preparation and analytical methods employed for the samples The LCS%recovery data is used for <br /> id L -�-�+- validation of sample batch results Due to matrix etlects the OC limits for MS/MSDs are advisory only <br /> Linda C Schneider and are not used to accept or reject batch results <br /> Project Manager <br /> 5041166GRW <6> <br />