2007-11-28_HYDROLOGY - M1978091UG

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AC~ Laboratories, Inc. 2773 Downhill Drive Steamboat Springs, CO 80487 .• .. L66190-01 WG236390 Manganese, dissolved M200.7 ICP M3 The spike recovery value is unusable since the analyte concentration in the sample is disproportionate to the spike level. The recovery of the associated control sample (LCS or LFB) was acceptable. WG236414 Chloride 325.2 / SM45000I-E M1 Matrix spike recovery was high, the recovery of the associated control sample (LCS or LFB) was acceptable. 325.2 / SM45000I-E RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG236535 Fluoride SM4500F-C RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG236012 Nitrate/Nitrite as N, dissolved M353.2 -Automated Cadmium HE Analysis performed past holding time. Method holding time Reduction is less than or equal to 7 days and sample was received with less than half of the holding time remaining (refer to item C5 of ACZ's Terms & Conditions). Nitrite as N, dissolved M353.2 -Automated Cadmium HE Analysis performed past holding time. Method holding time Reduction is less than or equal to 7 days and sample was received with less than half of the holding time remaining (refer to item C5 of ACZ's Terms & Conditions). WG236276 Nitrogen, ammonia M350.1 -Automated Phenate DB Sample required dilution due to low bias result. M350.1 -Automated Phenate RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG236469 Sulfate SM4500 S04-D RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). REPAD.15.06.05.01 L66190: Page 6 of 11 BLM -Lakewood, Colorado ACZ Project ID: L66190