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i <br /> Sierra <br /> Quality Control Report Environmental <br /> p Monitoring, Inc. <br /> An Addendum to SEM Report Number: 48878 Project ID: STRO2091146 <br /> Parameter �LCS, % MS, % MSD, % RPD, % Method Blank <br /> Recovery Recovery Recovery <br /> Lead-ECF-MS 100.6 84.8 98.5 14.95 X0.002 mg/L <br /> Fend:LCS, Laboratory Control Standard,MS,Matrix Spike;MSD,Matrix Spike Duplicate; <br /> Relative Percent Difference <br /> Wednesday,September 18,1001 Page 1 of 1 <br /> John Kobza, Ph.D. 1135 Fsnanciai Blvd. John C. Seher <br /> Laboratory Director Reno, NV 89502-2348 Special Consultant <br /> Phone (775) 857-2400 Quality Assurance Manager <br /> FAX (775) 857-2404 <br /> sem Q sem-analytical.com <br />