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1 <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> y R E .w....w'R"w'?.w.b.;,� ,' +xG. 'xw,w"X.`:..ti4``i�YS�id.•.w..y .fC `+Jp.^...�`-.},w�u��,.m <br /> Client TojBC[IO. Aroo2130932.5iJDckton <br /> #3164 Gold Camp Dr. Sufte 200 Matrix Soli <br /> Rancho Cordova,CA 95670 <br /> Attention: Jay Johnson OC Sample Group- 3110351-354 Reported Nov 19, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl- Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA a= EPA 8020 <br /> Analyst: C Chapman C Chapman C Chapman C Chapman <br /> MS/MSD <br /> Batch#: 3110375A-D 31103756-13 3110375A-D 31103756.0 <br /> Date Prepared: 11/17/x3 11/17/93 11/17/93 11/17/93 <br /> Date Analyzed: 11/17/93 11/17/93 11/17/93 11/17/93 <br /> instrument I D.#: HP-1 HP-1 HP-1 HP-1 <br /> Conc. Spiked: 0 20 mg/kg 0 20 mg/kg 0 20 mg/kg 0 60 mg/kg <br /> Matrix[Spike <br /> %Recovery: 100 95 95 90 <br /> • Matrbc Spike <br /> Duplicate% <br /> Recovery: 95 95 95 90 <br /> Reiative% <br /> Difference: 51 0 0 00 00 <br /> LCS Batch#: - <br /> Date Prepared: - <br /> Date Analyzed: _ <br /> Instrument i.D.#: <br /> LCS% <br /> Recovery: - - <br /> Recovery <br /> Control Limits: 80-120 80-120 80-120 80-120 <br /> Please Nate <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the acme reagents, <br /> SEQUOIA ANALYTICAL preparation,and anatytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of C Schneider specific compounds and Subjected to the entire an <br /> C <br /> sujecalytical procedurek- Linda��� the recory of ariaiyteafrom the matrix spike does not fall within specrfivesd control limits dux to matrix <br /> �L`; L interference,the LCS reaove is to be used to validate the batch <br /> Projeat Manager 3110351 RES <2> <br />