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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Nyr,.er, y�,ylvN..y,��wrq °Wa,.;~{.,�`N4s w'ri w,r�r <br /> *05610 <br /> Y}t� iiiraject ID Shed, 141 N EI Dorado,Melody Lane, Ste 160 Matrix Air w <br /> Roseville, CA 95678 <br /> Attention Paul Graff QC Sample Group 309��..--�0AA460 Reported Sep 22, 1993 <br /> } .. A\.�}Svxtu ✓vn Yn Yn nr'vr t. x4 r . . Yf frsw..x. wrm.v}v >}./1},p}w.. r:+v.S:W.}x6AAr}�r rr�r-xvi}rrvlvY���f.l✓.ie{Ax+ 4+vr �wrfr>++Y}u 4i .Wn�.aArsYx a+h..+5w n..4..ia.✓}rri'r ✓. ✓✓a. r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 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 Chaprran <br /> Concentration 20 20 20 6 0 <br /> Spiked: mg/cubic m mg/cubic m mg/cubic m mg/cubic m <br /> LCS Batch#: B090ME 8090993E 6090993E B090993E <br /> Date Prepared: 9/15/93 9/15/93 9/15/93 9/15/93 <br /> Date Analyzed: 9/15/93 9/15/93 9/15/93 9/15/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 <br /> LCS% <br /> 40 Recovery: 100 100 100 98 <br /> ConvoO Umits: 80-120 80.120 80-120 80120 <br /> ✓r.vv✓.vv:.}n+ x v +`� v+v tvv ry ry � v ry i v{ v v .v v :. �w wxu.w + + +vnvwv r +� + r � r , � �t +✓r• � yr ` 1 <br /> ^� r ryr v W�✓t 'h} nv r W ++� + vJ. v r +mm�hi rr r + ! rr +rnvr vr+•wv. .v.... i 1 rtv Y4 A x +n nnnvm�+'}'l` + ' yr ry . ryx rvr.n..r.rrAtrSr q s rr n . <br /> MS/MSD <br /> Batch#: BKLK091593 BKLK091593 BKLK091593 BKLK091593 <br /> Date Prepared: 9/15/93 9/15/93 9/15/93 9/15/93 <br /> Date Analyzed: 9/15/93 9/15/93 9/15/93 9/15/93 <br /> Instrument I.D.#: HP-2 HP-2 HP-2 HP-2 <br /> Matrix Spike <br /> %Recovery: 100 100 100 98 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 95 95 95 95 <br /> Relative% <br /> Difference: 51 51 51 31 <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 OC limits for MS/MSD's are advisory only <br /> e-, v and are not used to accept or reject batch results <br /> Linda C Schneider <br /> Project Manager 3090459 AEG <6> <br />