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OESC <br />1 <br />Molen & Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite #205 <br />Thornton, CO 60233 <br />Quality Assurance Report <br />Level II <br />L734625 <br />12065 Lebanon Rd. <br />Mt. Juliet, TN 37122 <br />(615) 758-5858 <br />1-800-767-5859 <br />Fax (615) 758-5859 <br />Tax I.D. 62-0814289 <br />Est. 1970 <br />November 28, 2014 <br />Matrix Spike Duplicate <br />Analyte Units MSD Ref %Rec Limit RPD Limit Ref Samp Batch <br />Sulfate mg/l 51.6 51.1 99.3 80-120 1.00 20 L734575-07 WG756798 <br />Post Spike <br />Serial Dilution <br />Batch number /Run number / Sample number cross reference <br />WG755737: R3005735: L734625-01 02 03 <br />WG755789: R3005784: L734625-01 02 03 <br />WG755785: R3005940: L734625-01 02 03 <br />WG755822: R3006023: L734625-01 02 03 <br />WG756086: 83006153: L734625-01 02 03 <br />WG756227: R3006383 R3006626: L734625-01 02 03 <br />WG756323: R3006426: L734625-01 02 03 <br />WG756324: R3006547: L734625-01 02 03 <br />WG756325: R3006548: L734625-01 02 03 <br />WG756215: R3006556: L734625-01 02 03 <br />WG756012: R3006775: L734625-01 02 03 <br />WG757019: R3006956: L734625-02 <br />WG756798: R3007039: L734625-01 02 <br />* * Calculations are performed prior to rounding of reported values. <br />* Performance of this Analyte is outside of established criteria. <br />For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' <br />Page 22 of 23 <br />