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SEQUOI NALYT' ICAL 10 <br /> 819 Striker Avenue, Suite 8 & Sacramento, CA 95834 <br /> (916) 921-9600 * FAX (916) 921-0100 <br /> PfiYJ&6f1'1) #EK6032-2,Mcl <br /> : - <iniey/French Camp Turnpike <br /> �arth S'�§teftii'Environmental' '.... ...............Client ............ <br /> ".4719 Quail Lakes Dr., #G-253 Matrix: Soil <br /> Stockton, CA 95207 <br /> .-...:,Attention: Allan J. Fetko QC Sample Group: 3040784-95 Reported:. May 3, 1993 <br /> .......... <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Lindane Heptachlor Aldrin Dieldrin Endrin DDT <br /> Method: EPA 8080 EPA 8060 EPA 8080 EPA 8060 EPA 8080 EPA SOSO <br /> Analyst: C.Chapman C.Chapman C.Chapman C.Chapman C.Chapman C.Chapman <br /> Concentration <br /> Spiked: 2.5 ppb 2.5 ppb 2.5 ppb 10 ppb 10 ppb 10 ppb <br /> LCS Batch#: SP042293A SP042293A SP042293A SP042293A SP042293A SP0422-93A <br /> Date Prepared: 4/27/93 4/27/93 4/27/93 4/27/93 4/27/93 4/27/93 <br /> Date Analyzed 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 <br /> Instrument LID*: HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> LCS% <br /> Recovery: 96 104 104 100 100 100 <br /> Control Limits: 60-145 60-145 60-145 60-145 60-145 60-145 <br /> .......... <br /> .. . .............. <br /> T <br /> x <br /> ................ <br /> MS/.MSD <br /> Batch #: BLKG42793 BLK042793 BLK042793 BLK042793 BLK042793 BLK042793 <br /> Date Prepared: 4/27/93 4/27/93 4/27/93 4/27/93 4/27/93 4/27/93 <br /> Date Analyzed 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 4/29/93 <br /> Instrument I.D.#: HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Matrix Spike <br /> % Recovery: 96 104 104 100 100 100 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 100 120 112 110 100 110 <br /> Relative% <br /> Difference: 4.1 14 7.4 9.5 0.0 9.5 <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 matrix effects,the QC limits for MS/MSO's are advisory only <br /> and are not used to accept or reject batch results. <br /> Wendy Amundsen <br /> Laboratory Director 3040781 ESS <13> <br />