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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX(415)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94599 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0 100 <br /> . ......... . ............. <br /> 8'm—lth Environmental Client Project ID: 14545, 95-1 22 01-02 <br /> -1260 Graphics Drive Matrix: Liquid <br /> Modesto, CA 95351-1502 <br /> .....Attention: Jeanne Hornsey Work Order#: 9706714-01, 02, 03 <br /> Reported: Jun 27, 1997 < <br /> ............ ... ........ <br /> .. .............. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Nitrate Sulfate Alkalinity <br /> GC Batch#: IN0614973000ACB IN0614973000ACB IN061997403000A <br /> Analy. Method: EPA 300.0 EPA 300.0 SM 403 <br /> Analyst: R.Iverson R.Iverson K.Sims <br /> MS/MSD #. 9706644-01 9706644-01 9706714-03 <br /> Sample Cone.: N.D. 49 mg/L 430 mg/L <br /> Prepared Date: 6/14/97 6/14/97 6/19/97 <br /> Analyzed Date: 6/14/97 6/14/97 6/19/97 <br /> Instrument I.D.#: INIC2 INIC2 Manual <br /> Cone.Spiked: 10 mg/L 10mg/L 200 mg/L <br /> Result: 9.5 48 630 <br /> MS %Recovery: 95 0 100 <br /> Dup. Result: 9.5 48 630 <br /> MSD %Recov.: 95 0 100 <br /> RPD: 0.0 0.0 0.0 <br /> RPD Limit: 0-20 0-20 0-20 <br /> . . ........ <br /> . .. .... .. <br /> Room ...... ..... <br /> ......... <br /> ..... . ....... . <br /> ......... ...... ............. .... <br /> LCS#: LCS061497 LCS061497 LCS061997 <br /> Prepared Date: 6/14/97 6/14/97 6/19/97 <br /> Analyzed Date: 6/14/97 6/14/97 6/19/97 <br /> Instrument LID*: INIC2 INIC2 Manual <br /> Cone. Spiked: 10mg/L 10 mg/L 100 mg/L <br /> LCS Result: - 11 9.7 96 <br /> LCS %Recov.: 110 97 96 <br /> MS/MSD 75-125 75-125 75-125 <br /> LIDS 90-110 90-110 80-120 <br /> Control Limits <br /> Please Note: <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEQUPIA ANALYTICAL 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 /> VAC4 interference,the LCS recovery is to be used to validate the batch. <br /> Sheila Flynn <br /> Project Manag r MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9706714.SSS <4> <br />