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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> t II Bates Avenue Suite L Concord,CA 94520 (510) 686-9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> •'' yrn <br /> ugro West, Inc' Client Project 10 `She11, 2WeWaei46oRdStor�c'krrf%aa, <br /> CA krmmfi F ryfrfr`+"� <br /> 1050 Melody Lane, Ste 160 Matmt Soil <br /> Roseville, CA 95678 i <br /> Attention David L Poulsen CC Sample Group 501-0195 Reported Jan 11, 1995 <br /> r i r . ry >i . } / v r ..v i� rvr ' ♦i r..w .n+� HaC.yrYnv��4 4 i4.YAv}MOYF rn"'F r..ttv;3'wr '.c rr `'°A"r 'F.':.,+w'3..urw> >,'.,'.Y' r,.X <br /> r w x . rc .., rr�r.i4 y t aFf s4+•.vrhi^" r <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE <br /> Cadmium Chromium Lead Nickel Zine Mercury <br /> Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 7471 <br />' Analyst: D Ballard D Ballard D Ballard D Ballard D Ballard D Ballard <br /> Concentration <br /> Spiked 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg 0 25 mg/Kg <br /> LCS Batch# LCS010995 LCS010995 LCS010995 LCS010995 LCS010995 LCS010995 <br /> Date Prepared 1/9/95 1/9/95 1/9/95 1/9/95 1/9/95 1/10/95 <br /> Date Analyzed. 1/10/95 1/10/95 1/10/95 1/10/95 1/10/95 1/10/95 <br /> Instrument I D #• P 40 P 40 P 40 P 40 P 40 SH 1000 <br /> LCS % <br /> Recovery 98 98 95 94 99 86 <br /> Control Limits 80-120 80-120 80-120 80-120 80-120 80-120 <br />' MS/MSD <br /> Batch # 5010195 5010195 5010195 5010195 5010195 5010195 <br /> Date Prepared 1/9/95 1/9/95 1/9/95 1/9/95 1/s/95 1/10/95 <br />' Date Analyzed- 1/10/95 1/10/95 1/10/95 1/10/95 1/10/95 1/10/95 <br /> Instrument I.D.#• P 40 P 40 P 40 P40 P 40 SH 1000 <br /> I Matrix Spike <br /> % Recovery- 94 87 91 91 89 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery- 91 89 89 88 89 <br /> Relative% <br /> Difference 32 23 22 34 00 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagentst <br /> SE OIA ANALYTICAL preparation and analytical methods employed for the samples The LCS%recovery data m used for <br /> validation of sample batch results ❑ue to matrix effects,the 11C limits for MS/MSG's are advisory only <br /> P�� <br /> and are not used to accept or reject batch results *Matnx Interference <br /> Linda C Schneider <br /> Project Manager <br /> 5010195 FUG <4> <br />