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<br />' ADZ <br />2773 Downhill Drive Laboratories, Inc. <br />Steamboat Springs, CO 80487 (800) 334-5493 • <br /> ACZ Project ID: L75394 <br /> METHOD <br />QUAL <br />DESCRIPTION <br /> <br />L75394-03 WG262719 Calcium, dissolved M200.7 ICP M3 The spike recovery value is unusable since the analyte <br /> concentration in the sample is disproportionate to the spike <br /> level. The recovery of the associated control sample (LCS <br /> or LFB) was acceptable. <br />WG262835 Fluoride SM4500F-C M2 Matrix spike recovery was low, the recovery of the <br /> associated control sample (LCS or LFB) was acceptable. <br /> SM4500F-C RA Relative Percent Difference (RPD) was not used for data <br /> validation because the sample concentration is too low for <br /> accurate evaluation (< 10x MDL). <br />WG262627 Nitrate/Nitrite as N, dissolved M353.2 - Automated Cadmium RA Relative Percent Difference (RPD) was not used for data <br /> Reduction validation because the sample concentration is too low for <br /> accurate evaluation (< 10x MDL). <br />Nitrite as N, dissolved M353.2 - Automated Cadmium RA Relative Percent Difference (RPD) was not used for data <br /> Reduction validation because the sample concentration is too low for <br /> accurate evaluation (< 10x MDL). <br />WG262926 Nitrogen, ammonia M350.1 - Automated Phenate N1 See Case Narrative. <br /> M350.1 - Automated Phenate RA Relative Percent Difference (RPD) was not used for data <br /> validation because the sample concentration is too low for <br /> accurate evaluation (< 10x MDL). <br />WG263166 Sulfate 375.4 - Turbidimetric M2 Matrix spike recovery was low, the recovery of the <br /> associated control sample (LCS or LFB) was acceptable. <br />WG262734 Total Alkalinity SM2320B - Titration ZW Method deviation. The sample was centrifuged prior to <br /> analysis due to high solid content <br />REPAD.15.06.05.01 <br />Page 13 of 17