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Sequoia 680 Chesapeake Drive Redwood City CA 94463 (650)364-9600 FAX(650)364-9233 <br /> 404 N WSet Lame Walnut Geek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Ave -wSulte 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell 5Kd.North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> EAttentJcn::Deanna <br /> if3u n ClienitoCourt,Suite J Matnc� Liquid <br /> 94568 Harding QC Sample Group 9020606-619 Reported Feb 11, 1999 <br /> ' QUALITY CONTROL DATA REPORT <br /> ANALYTE Iran Copper Magnesium Manganese enc <br /> Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst J Kelly J Kelly J Kelly J Kelly J Kelly <br /> ' MS/MSD <br /> Batch# 9020606 9020606 9020606 9020606 9020606 <br /> ' Date Prepared. 2/8/99 2/8/99 2/8/99 2/8/9-9 2/8/99 <br /> Date Analyzed 2/9/99 2/9/99 2/9/99 2/9/99 2/9/99 <br /> Instrument I D# MV-4 MV-4 MV-a MV-4 MV4 <br /> Conc.Spiked 10 mg/L 10 mg/L 1 0 mg/L 10 mg/L 10 mg/L <br /> ' Matrix Spike <br /> %Recovery. 70 96 800 100 101 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery- 60 96 200 so 101 <br /> Relative% <br /> Difference: 33 00 53 as 00- <br /> ,c .. ., o, r«0-r^v�k'`-;^-�^^?'^...N^r-w+w^s„^w^.rca�, ^...��^•.,,..^'�'S`u SOs^h^"�`^,�" '�",.""u"�'x�'�yi�i;""""""mm�""w'<8e""�c�m n`*'°�7"q <br /> LCS Batch#- LCS020899 LCS020e99 LCS020899 Lcs020899 LCS020899 <br /> Date Prepared, 2/8/99 2/8/99 2/8/99 2/8/99 2/8/99 <br /> Date Analyzed' 2/9/99 2/8/99 2/9/99 2/9/99 2/9/99 <br /> Instrument 1.13 #: MV4 MV-4 MV4 MV-4 MV-4 <br /> ' LCS % <br /> Recovery: 131 110 111 110 110 <br /> Recovery <br /> Control Limits: 80.120 80.120 80.120 80-120 80.120 <br /> Please Note <br /> ' The LCS is a control sample of known.Interferent free matrix that Is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL,#1271 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 antlre analytical procedure If <br /> the recovery c f analytes from the matrix spike does not fall within specified control limits due to matrix <br /> ' Interference,the LCS recoveryIs to be used to valldate the batch <br /> Hanna Fegley <br /> Project Manager <br /> 9020608 GET <29> <br /> 1 <br /> 1 <br />