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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 FAX (415) 364-9233 <br /> +t u.m r yr r} `` 'S vi Ai, f t '.'.O ♦Rr r.1.. Gv++ +�}+v` rr unu nrn + }�+ �+4`vm uni h`vi ur.`�vv n+m n+rv`rv{vf nSt{hlr+�ry vry r w`r+�ir avvRf{µciv <br /> �;RESNA Client Project ID A V110309 00, Gardner Property <br /> 1710 Main Street Matroc Water <br /> Escalon, CA 95320 # <br /> Attention Tom Lutterman OC Sample Group 3GD1401-6 _ Reported Aug 3, 1993 x� <br /> , <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: M Nipp M Nipp M Nipp M Nipp <br /> Conc. Spiked: 10 10 10 30 <br /> Units: ug/L Ng/L ug/L ug/L <br /> LCS Batch#. BLK073093 BLK073093 BLK073M BLK073093 <br /> Date Prepared: - - - <br /> Date Analyzed: 7/30/93 7/30/93 7/30/93 7/30/93 <br /> 0Instrument I.D.#. GCHP3 GCHP-3 GCHP-3 GCHP-3 <br /> LCS % <br /> Recovery 97 97 98 100 <br /> Control Limits 80-120 80-120 80-120 80-120 <br /> +�c o V., <br /> 'v' ♦ � r{v� v r tu�u M1r v}}}s } v ` } ♦ r M1r }v v v twv wn nxv ti ' n WF�r yr z ' rr uvw+n,.wn r x�v <br /> MS/MSD <br /> Batch#: 3GO3002 3GO3002 3GO3002 3GO3002 <br /> Date Prepared - - <br /> Date Analyzed: 7/30/93 7/30/93 7/30/93 7/30/93 <br /> Instrument I.D.#: GCHP3 GCHP-3 GCHP-3 GCHP-3 <br /> Matrix Spike <br /> % Recovery- 94 94 93 93 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery. 96 98 96 97 <br /> Relative% <br /> Difference. 21 1 1 32 42 <br /> SEQUOIA ANALYTICAL Please Note <br /> The LCS is a control sample of known,interferent free matrix that Is analyzed using the same reagents, <br /> 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 CC limits for MS/MSD's are advisory only <br /> Vickie Tague and are not used to accept or reject batch results <br /> Project Manager 3GD1401 WAT <2> <br />