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QC Batch ID: MP4474 <br />Matrix Type: AQUEOUS <br />Prep Date: <br />MATRIX SPIKE AND DUPLICATE RESULTS SUMMARY <br />Login Number: D22645 <br />Account: CONCECOK - Contour Consulting Engineering <br />Project: GCC <br />Page 2 <br />Methods: EPA 200.7 <br />Units: ug /1 <br />Metal <br />(N) Matrix Spike Rec. outside of QC limits <br />(anr) Analyte not requested <br />(a) Spike recovery indicates possible matrix interference. <br />(b) Spike amount low relative to the sample amount. Refer to lab control or spike blank for recovery <br />information. <br />(c) Spike amount low relative to the sample amount. Refer to lab control or spike blank for recovery <br />information. <br />43 of 68 <br />• ▪ ACCI...ITEST. <br />D22645 ` " ° °" " T° ° ", <br />