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SEQUOI819 Striker A ANALYTICuite 8 e Sacramento, AL 4 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> r RESNA Industries ` Client Project 0 38009 04/Fire Station #2, Stockton <br /> 3164 Gold Camp Or, Suite 200 Matrix Water <br /> Rancho Cordova, CA 95670 <br /> Attention Claudio Avila OC Sample Group 3080272-276 Reported Aug 18, 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene benzene Xylenes Diesel <br /> EPA <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 8015 Mod <br /> Analyst: Chiaravalloti Chiaravalloti Chiaravallott Chiaravailob Chiaravailotr <br /> Concentration <br /> Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L 300 ug/L <br /> LCS Batch#: LCS080693 LCS080693 LCS080693 LCS080693 BLK081793 <br /> Date Prepared: 8/6/93 8/6/93 8/6/93 8/6/93 8/17/93 <br /> Date Analyzed: 8/6/93 8/6/93 8/6/93 8/6/93 8/17/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP3B <br /> LCS 96 <br /> Recovery* 99 100 99 100 110 <br /> Control Limrts: 80-120 80-120 80-120 80-120 80-120 <br /> .u...sw n+m$v ry r ♦y v <br /> ox,-'24 <br /> n0-i r. <br /> MS/MSD <br /> Batch#- 3080035 3080035 3080035 3080035 BLK081793 <br /> Date Prepared: 8/6/93 8/6/93 8/6/93 8/6/93 8/17/93 <br /> Date Analyzed- 8/6/93 8/6/93 8/6/93 8/6/93 8/17/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 HP3B <br /> Matrix Spike <br /> % Recovery: 94 96 98 95 110 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 98 99 100 100 113 <br /> Relative% <br /> Difference: 42 31 20 51 27 J <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 LCS%recovery data is used for <br /> �) validation of sample batch results Due to matnx effects,the OC limits for MS/MSD's are advisory only <br /> and are not used to acce t or reject batch results <br /> �r JYLAvLinldla C(Schneider <br /> Project Manager 3080272 RES c3> <br />