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ACZ Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487 (800)334-5493 <br /> Alexco Water and Environment Inc. April 08, 2019 <br /> Project ID: <br /> ACZ Project ID: L50713 <br /> Sample Receipt <br /> ACZ Laboratories, Inc. (ACZ) received 4 miscellaneous samples from Alexco Water and Environment Inc. on March 22, <br /> 2019. The samples were received in good condition. Upon receipt,the sample custodian removed the samples from the <br /> cooler, inspected the contents, and logged the samples into ACZ's computerized Laboratory Information Management <br /> System (LIMS). The samples were assigned ACZ LIMS project number L50713. The custodian verified the sample <br /> information entered into the computer against the chain of custody (COC) forms and sample bottle labels. <br /> Holding Times <br /> All analyses were performed within EPA recommended holding times. <br /> Sample Analysis <br /> These samples were analyzed for inorganic, radiochemistry parameters. The individual methods are referenced on both the <br /> ACZ invoice and the analytical reports. The extended qualifier reports may contain footnotes qualifying specific elements <br /> due to QC failures. In addition the following has been noted with this specific project.. <br /> The Total Dissolved Solids results for L50713-04 have been qualified with the N1 flag on the extended qualifier report.The <br /> chemist noted that the 105 C drying oven went'out of range' during the drying period due to a short power outage. The oven <br /> temperature was adjusted and in range before the corresponding workgroup was removed. All associated QC passed <br /> criteria; sample integrity not compromised. <br /> Lff?:R t a8P604 Page 2 of 24 <br />