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Sequoia 6so Chesapeake Drive Redwood Cary CA 94063 (415) 364-9604 FAX (415) 364 9233 <br /> 1g0°Bates Avenue,suite L Concord,CA 94520 (510) 686 9604 FAx(510) 686 9689 <br /> �� Analytical <br /> 819 Striker Avenue Suue 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ?n vv`rr O^ roW+�+)''+4h Y-"' Vr 1}`tir L�+ +rtn+cFri•'Jw.y r.. Srrx y�aY,,.»w cv` Kv v V^v rJ . ..�wn+ti*k v�fv��"..~MY nY`rwor i�.�c+�'y G{y.,n~�e`Vy` <br /> < RESNA Client ProjectID150077 01, Holt Bros <br /> 1710 Main Street Matrix Water >s <br /> �;Escalon, CA 95320 n> <br /> Attention John Lane _ OC Sample Group 4CF9001-5 <br /> Rep <br /> .rted aA�r 7,r 1994„ <br /> �nE V ,ecJ, ', 4`' y:r..,. '�^•vna,>Ynn"-...�,.{F.� <br /> ib}4 i YC""'Fav :tb+swC,.Y•f/4s �f' rry v l^ mw�+ vJ.n 4+++. r�rr,nv l+'rr.v vG+.'Yv n vw..v ..'J}M�'�"4 rc�Y...w.wtr!'}'Hms+�m>v[+lvity.v.^4� <br /> uv.} v .vu.6r. ` r} v rl rCY♦L+f nv v4i>'r.C4{'h vw+�vrw twLY rnrr-{rxrry u <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method: EPA 8020 EPA 8020 EPA$020 EPA 8020 <br /> Analyst: P Madden P Madden P Madden P Madden <br /> MS/MSD <br /> Batch#: 4030MMS 4030777MS 4030777MS 403 =MS <br /> Date Prepared: 4/6/94 4/6/94 4/15/94 4/6/94 <br /> Date Analyzed: 4/6/94 4/6/94 4/6/94 4/6/94 <br /> Instrument LD #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Conc Spiked: 10pg/L 10ug/L 10pg/L 20Yg/L <br /> Matrix Spike - <br /> %Recovery: so 1315 81 85 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 87 107 90 95 <br /> Relative% <br /> Difference. 84 22 11 11 <br /> ,. ,>r1 r a,.,.�C+ r4.^^y rr,�m+wt v)�Yr r n,4;•; "�'rtN;4`":4 k a...v^eco <br /> ¢n � rr r.�Jy�S+S'S`Otw"::.eAr�Q{e�Jt�,�}.4•hoy^o;"'r_.,.�F a""'`'^"„ ;A:r` , Yti r..r ^ v ra ,.v; `,3 b" vvt firo`• r<c <br /> LCS Batch#: - MB040694 MBD40694 MB040694 MB040694 <br /> Date Prepared: 4/6/94 4/6/94 4/6/94 4/6/94 <br /> Date Analyzed: 4/6/94 4/6/94 4/6/94 4/6/94 <br /> Instrument 1 D #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS% <br /> Recovery: 82 101 88 94 <br /> % Recovery <br /> Control Limits: 71-133 72-128 72-130 71-120 <br /> Please Note <br /> 10SEQUOIA ANALYTICAL The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> ELAP#1894 preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> VicftTa �ark <br /> PaCFsoot wAT <s> <br /> Project Manager <br />