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AUZ Laboratories, Inc. 2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334 -5493 Golder Associates ACZ Project ID: L15611 REPAD.15.06.05.01 Page 20 of 26 ACZ ID WORKNUM PARAMETER METHOD QUAL DESCRIPTION L15611 -01 WG355271 Chloride M300.0 - Ion Chromatography RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG355667 Fluoride SM450OF -C M2 Matrix spike recovery was low, the recovery of the associated control sample (LCS or LFB) was acceptable. SM450OF -C RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 1 Ox MDL). L16611 -02 WG355271 Chloride M300.0 - Ion Chromatography N1 See Case Narrative. M300.0 - Ion Chromatography RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG355667 Fluoride SM450OF -C M2 Matrix spike recovery was low, the recovery of the associated control sample (LCS or LFB) was acceptable. SM450OF -C RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG355271 Sulfate M300.0 - Ion Chromatography N1 See Case Narrative. L15611 -03 WG355271 Chloride M300.0 - Ion Chromatography N1 See Case Narrative. M300.0 - Ion Chromatography RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for WG355667 Fluoride SM450OF -C M2 accurate evaluation (< 10x MDL). Matrix spike recovery was low, the recovery of the associated control sample (LCS or LFB) was acceptable. SM450OF -C RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG355464 Residue, Filterable (TDS) @180C SM2540C H2 Initial analysis within holding time. Reanalysis for the required dilution was past holding time. SM2540C 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). WG355271 Sulfate M300.0 - Ion Chromatography DC Sample required dilution. Non- target analyte exceeded calibration range. M300.0 - Ion Chromatography N1 See Case Narrative. L15611 -04 WG355271 Chloride M300.0 - Ion Chromatography DC Sample required dilution. Non - target analyte exceeded calibration range. M300.0 - Ion Chromatography RA Relative Percent Difference (RPD) was not used for data ' validation because the sample concentration is too low for accurate evaluation (< 10x MDL). WG355667 Fluoride SM450OF -C M2 Matrix spike recovery was low, the recovery of the associated control sample (LCS or LFB) was acceptable. SM450OF -C RA Relative Percent Difference (RPD) was not used for data validation because the sample concentration is too low for accurate evaluation (< 1 Ox MDL). WG355464 Residue, Filterable (TDS) @180C SM2540C H2 Initial analysis within holding time. Reanalysis for the required dilution was past holding time. SM2540C 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). REPAD.15.06.05.01 Page 20 of 26