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Page 32 of 59 <br /> alscience <br /> nvironmental <br /> Quality Control - Duplicate <br /> Fw aboratories, Inc. `t ne. <br /> GeoSyntec Consultants Date Received: N/A <br /> 475 14th Street, Suite 450 Work Order No: 08-08-1731 ' <br /> Oakland, CA 94612-1940 <br /> Project: Western Farm Service-Vernalis ' <br /> Matrix: Aqueous <br /> Parameter Method QC Sample ID Date Analyzed Sample Conc DUP Conc RPD RPD CL Qualifiers ' <br /> Alkalinity,Total(as CaCO3) SM 2320B 08-08-1690-1 08/25/08 494 492 0 0-25 <br /> Ammonia(as N) SM 4500-NH3 B/E DUP 08/26/08 85 84 0 0-25 t <br /> (M) <br /> Sulfide,Total SM 4500 S2-D 08-08-1657-1 08/21/08 ND ND NA 0-25 <br /> RPD-Relative Percent Difference, CL-Control Limit ' <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 . FAX: (714) 894-7501 <br />