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UOS <br />URS Operating Services, Inc. Data validation Report <br />VI11. FORM ~ -ICP INTERFERENCE CHECK SAb9PLE <br />The ICP interference chick sample (ICS) was nm twice per eight hour shift and/oi at the beginning <br />and end of each sample set analysis sequence (w'hichever is more Frequent). <br />Yes X No_ <br />Comments: None. <br />Percent recovery oFthe analyzes in solution ICSAB were within the ran ~e of 30-I30%. <br />Yes X No <br />Comments: None. <br />Sample results for aluminum, calcium, iron, and ma~:nesium were less than the ICSA values. <br />Yes No X <br /> <br />Comments: The follo~t ing sample result was qualified because the iron result •.vas greater than <br />the ICSA value and the absolute value of the associated element was Ureater than <br />[he IDL in the ICSA analysis: <br /> <br />Element ICSA Result IDL Samples Affected Qualifiers <br /> (ad/W (ue/L) <br />Cadmium -~! I.0 RSR-OGB UJ <br />The non-detected result was qualified as estimated for negative ICSA results. <br />IX. FORbI SA - bIATRI\ SP[KE SAb9PLE ANALYSIS <br />A matrix spike sample was analyzed with every twenq• or fewer samples of a similar matrix. or one <br />per sample delivery group (whichever is more frequent). <br />Yes X No_ <br />Comments: None. <br /> <br />