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A CZ Laboratories, Inc. <br /> 2773 Downhill Drive Steamboat Springs, CO 80487 (800)334-5493 <br /> Alexco Water Environmental Inc. September 23, 2019 <br /> Project ID: Schwarzwalder Mine <br /> ACZ Project ID: L50185 <br /> Sample Receipt <br /> ACZ Laboratories, Inc.(ACZ)received 3 groundwater samples from Alexco Water&Environmental Inc. on February 27, <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®computerized Laboratory Information Management <br /> System (LIMS). The samples were assigned ACZ LIMS project number L50185. 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 /> Per client request, results for Total Arsenic were added to the final report after it was initially sent. The final report was <br /> revised and sent to the client on 9/23/19. <br /> L 'WORA17 Page 2 of 34 <br />