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J00-0SNIO, United States Environmental Protection Agency <br /> Region 9 Laboratory <br /> °2 1337 S.46th Street, Building 201, Richmond, CA 94804 <br /> 44 PRo'�'�' Phone:(510)412-2300 Fax:(510)412-2302 <br /> Project Manager: Carolyn Douglas Brownfields and Site Assessment Section SDG: 11020E <br /> Project Number: R11B03 75 Hawthorne Street Reported: 03/08/11 15:07 <br /> Project: El Concilio Site#2 2011 TBA San Francisco CA,94105 <br /> Quality Control <br /> Qualifiers/ Quantitation Spike Source %REC RPD RPD <br /> Analyte Result CommentsLimit Units Level Result %REC Limits Limit <br /> Batch B1A0107-Solids,Dry Weight(Prep)-Solids,Dry Prepared:01/25/11 Analyzed:01/27/11 <br /> Weight Conventional Chemistry Parameters by APHA/EPA Methods-Quality Control <br /> Duplicate(B1A0107-DUPl) Source:1101025-09 <br /> %Solids 85 1 % 85 0.2 20 <br /> 1101025 FINAL 03 08 11 1507 Page 8 of 9 <br />