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i 0 w <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX{415)364 9233 <br /> ,!D 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> *" ♦ r ] r r n-�r.I' ~Y r rr . .vv �. �rrn+1M r%x n SA1 Yk4}r}rte t 1 <br /> RESNA Client Project ID ' 150070 01, Chase Chevrolet <br /> 1710 Main Street Matrix Liquid 'f <br /> Escalon, CA 95320 4 <br /> Attention Greg Stahl OC Sample Group}4E5740M Reported k May 23, 1994 <br /> ry � <br /> ? w! � v }" rrrr rr � �t�• ry.rv+� vv � i v +C` nrry ♦ ` ryr x ,. .r'. ` G.4S,:.\M111v.trr.0:ir <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD <br /> Batch# 4E52309 4E52300 4E52309 4E52309 <br /> Date Prepared. - - - - <br /> Date Analyzed 5/13/94 5/13/94 5/13/94 5/13/94 <br /> Instrument IX#' GCHP3 GCHP-3 GCHP-3 GCHP-3 <br /> Conc.Spiked: 10pg/L lopg/L long/L 30ug/L <br /> Matrix Spike <br /> %Recovery. 93 94 93 93 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 100 100 100 100 <br /> Relative% <br /> Difference: 73 62 73 73 q ppp <br /> tl i x v S +. `}• v�nhv/+...ryl�x„n ] ` j r.. ti � xti ..$ '. r NJ Ly x.. '64 0.}}x`��n n{.JrE ry4fi���'i44+�vC{i ^i VjO3�F�lj et' c`SL`''4�ni.�'po Wr ar <br /> `"r x ♦ W}]+[x r{.�. .i k�` v J�y`wx: jc�M�u � ^ Jr � y, �} �!} � r]n Oji Yy ��mli�'�.�.? r� b qQ£ <br /> r x� r M1 ryS 4.Ai }v.+. ix`d�uh33.�^^finrv4•'�X� `.J 3}' `~in vti�}r t4 � b}i}r vu 1 nW.G.o� v.�o'fij`i nn� t rn'" At4�Sfi n`}.x\�A�ri M��k" �+A]5$HsvJ vnrry r <br /> LCS Batch#: <br /> Date Prepared - - - - <br /> Date Analyzed - - - <br /> Instrument 1 D #' - - - <br /> LCS % <br /> Recovery - - - <br /> % Recovery <br /> Control Limits' 71-133 72-128 72-130 71-120 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> &EQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> forged with known quantities of specific compounds and subjected to the entire analytical procedure if <br /> ( /1�t/1� the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> U�1 1` Uw*- Interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager 4ES7401 WAT <3> <br />