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ru � <br /> j SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> (415) 364-9600 - FAX (415) 364-9233 <br /> r v¢ n rn S .trr�mhYh^Sv°iv+Tv.^y- vvv.wH y <br /> k RESIVAMhx nj 02 00� law <br /> Corp <br /> tient Pro ect ID x 1500 , Laid a Co 4, <br /> v 1710 Main Street Matra Water <br /> Escalon, CA 95320 <br /> -Attention John Lane CC Sample Group 3H22801-2,4-6 Reported Aug 11. 1993 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene Toluene Benzene lenes <br /> Method: EPA 8020 EPA$020 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 ug/L u9/L ug/L <br /> LCS Batch#: BLK080993 BLK080993 BLK080993 BLK080993 <br /> Date Prepared: - - - - <br /> Date Analyzed: 8/9/93 8/9/93 8/9/93 8/9/93 <br /> Instrument I.D #: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> LCS % <br /> Recovery: 100 100 100 100 <br /> I <br /> Control Limits: 80-120 80-120 80-120 80-120 <br /> r, s ^ v r{i h r,nn +nv +t vvv t s♦ v ` rr r,v n.v,n v r. 4 i r. vrs r. x t „ n nn rnvsr,. 'A-r+�1 G r <br /> MS/MSD <br /> Batch#: 3GF0403 3GF04M 3GF04M 3GF0403 <br /> Date Prepared - - - - <br /> Date Analyzed: 8/9/93 8/9/93 $/9/93 8/9/93 <br /> Instrument I.D.#: GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Matrix Spike <br /> %Recovery 85 85 86 83 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery- 99 99 100 100 <br /> Relative % <br /> Difference- 15 1s 15 19 <br /> OSEQUOIA 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 GC limits for MS/MSD's are advisory only <br /> and are not used to accept or refect batch results <br /> Vickie Tagu <br /> Project Manager 3H22801 WAT <2> <br />