2008-05-05_GENERAL DOCUMENTS - M1977247

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• • ACZ Laboratories, Inc. 0 2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334 -5493 Matheson Mining Consultants PARAMETER L68757 - WG243636 Arsenic, dissolved WG243251 Iron, dissolved WG243341 Iron, total WG243251 Manganese, dissolved WG243204 Mercury, dissolved WG243597 Nickel, dissolved WG243431 Acidity as CaCO3 WG243540 Coliforms, fecal REPAD.15.06.05.01 WG243373 Fluoride WG243278 Nitrate /Nitrite as N, dissolved Nitrite as N, dissolved WG243207 Nitrogen, ammonia WG243195 Sulfate M200.7 ICP M200.7 ICP M200.7 ICP M200.7 ICP M200.7 ICP M245.1 CVAA M200.7 ICP SM2310B - Titration SM9222D - Membrane Filter SM4500F -C M353.2 - Automated Cadmium Reduction M353.2 - Automated Cadmium Reduction M353.2 - Automated Cadmium Reduction M350.1 - Automated Phenate 375.4 - Turbidimetric ACZ Project ID: L68757 DB Sample required dilution due to low bias result. QA Sample container with preservation type specified by the method was not available for analysis. Alternate sample container was used. 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. 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. MA Recovery for either the spike or spike duplicate was outside of the acceptance limits; the RPD was within the acceptance limits. MA Recovery for either the spike or spike duplicate was outside of the acceptance limits; the RPD was within the acceptance limits. QA Sample container with preservation type specified by the method was not available for analysis. Alternate sample container was used. RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). HE Analysis performed past holding time. Method holding time 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). RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). HC Initial analysis within holding time. Reanalysis was past holding time, which was required due to a QC failure during the initial analysis. HC Initial analysis within holding time. Reanalysis was past holding time, which was required due to a QC failure during the initial analysis. RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). M2 Matrix spike recovery was low, the recovery of the associated control sample (LCS or LFB) was acceptable. Page 9 of 16