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SAW- <br /> SEQUOIA ANALYTICAL <br /> I 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> { <br /> Crmeda, <br /> art" "`V A " "v"` `C[ierlt project iD MST LP 7'639A <br /> ic Avenue Matrix Soil <br /> A 94501 <br /> Kelly Isbell QC Sample Group 306-0221 Reported Jun 9, 1993 <br /> K.,,, r; <br /> r v k 47A}ah hA.3f>5. a <br /> 3 <br /> QUALITY CONTROL DATA REPORT <br /> 5 <br /> tNALYTE <br /> } <br /> Mercury Cadmium Chromium Lead Nickel Zinc <br /> r <br /> Method. EPA 7471 EPA 6010 EPA 6010 EPA 6010 EPA 6010 EPA 6040 <br /> Analyst: V Owens D Ballard D Ballard D Ballard D Ballard D Ballard <br /> Concentration <br /> Spiked- 0 25 mo/kg 2 5 mg/kg 2 5-ng/kg 12 5 mg/kg 5 0 mg/kg 2 5 mg/kg <br /> LCS Batch#. IOV060893 LCS060793 LCS060793 LCS060793 LCS060793 LCSM793 <br /> Date Prepared 6/8/93 6/7/93 6/7/93 6/7/93 6/7/93 6/7/93 <br /> Date Analyzed. 6/8/93 6/7/93 6/7/93 6/7/93 6/7/93 6/7/93 <br /> ]strument 1.0 # SH-1000 PE-40 PE-40 PE-40 PE-40 PE-40 <br /> I <br /> i LCS % <br /> . Recovery a9 106 88 91 98 99 <br /> Control Limits 75-125 75-125 75-125 75-125 75-125 75-125 <br /> MS/MSD <br /> Batch # BLK060893 3060125 3060125 3060125 3060125 3060125 <br /> Date Prepared. 6/8/93 6/7/93 6/7/93 6/7/93 6/7/93 6/7/93 <br /> We Analyzer! 6/8/93 6/7/93 6/7/93 6/7/93 6/7/93 6/7/93 <br /> Istrument I D.# SH-1000 PE-40 PE-40 PE-40 PE-40 PE-40 <br /> Matrix Spike <br /> % Recovery 89 85 97 83 95 91 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 94 83 111 88 89 107 <br /> Relative % <br /> Difference 55 24 13 58 6 5 16 <br /> s <br /> Please Note <br /> The LCS Is a control sample of known,interferent free matrix that is analyzed using the same reagents, <br /> WIA ANALYTICAL preparation and analytical methods employed for the samptes 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 /> Andy Amundsen <br /> lboratory Director <br /> 3060221 MCL <2> <br />