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4 <br /> j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br /> (415) 364-9600 • FAX (415) 364-9233 <br /> ; RESNA Client Project ID Wo 169 00, BJJ Tracy <br /> 1710 Main Street Matrix Water <br /> �Escalon, CA 95320 ; <br /> Attention Lois Frantz _ OC Sample Group 3J15301-2 Reported Oct 19, 1993 <br /> .ornom^o�xv„ ...,.S,�c�vrvc.s+�,c v< vwNe;v�rrnmv�vti <br /> }t v ^rh rv4 '$fi} YuYair err.v.,rwhktr�4 nhn Nvrr�w��ti•h ivry iY}itrv°vv 5rr5 xivSr vh njv�i'S}�F iv{SF ivrvY non C4}i ni rn*�h}�n ll�+vs N i}iQfv^.^'�w}`'v v..,S}v'i+ Frvrr hJ??n r yr v ' <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene Xylenes Diesel <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015 <br /> Analyst: M Nipp M Nipp M Nipp M Nipp V H <br /> Conc. Spiked: 10 10 10 30 300 <br /> Units: pa/L pg/L 1•g/L N9/L 1►9/L <br /> LCS Batch#: BLK100693 BLK100693 BLK100693 BLK100693 BLK100793 <br /> Date Prepared: - - - - 10/7/93 <br />. Date Analyzed' 10/6/93 10/6/93 10/6/93 10/6/93 10/8/93 <br /> Instrument I.D.#. GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-5 <br /> LCS % <br /> Recovery: 100 100 100 100 65 <br /> Control Limits: 80-120 80-120 80-120 80-120 50-150 <br /> x+.rve�:rr• r r. } wr 9a'Y••,ti...^.+ F.,,r,.r N,a}wwf,r"b.n:w+,tr w,r n.}^, .s t �::n ti w u�r ,.rr,.?vw`K s�.,.a°.. ,.`,•+, t n <br /> MS/MSD <br /> Batch #: 3,110902 3,110902 3,110902 3.110902 3,115401 <br /> Date Prepared: - - - - 10/7/93 <br /> Date Analyzed. 10/6/93 10/6/93 10/6/93 10/6/93 10/12/93 <br /> Instrument LD #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-5 <br /> Matrix Spike <br /> %Recovery: 96 97 98 97 a8 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 92 92 92 93 77 <br /> Relative% <br /> Difference: 43 53 63 42 13 <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 /> ' qn� 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 /> and are not used to accept or reject batch results <br /> Vickie Tague <br /> Project Manager 3,115301 WAT <3> <br />