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ACZI-aboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <br />Ouray Silver Mines <br />Project ID: <br />ACZ Project ID: L69169 <br />November 23, 2021 <br />ACZ Laboratories, Inc (ACZ) received 2 miscellaneous samples from Ouray Silver Mines on October 12, 2021 The <br />samples were received in good condition Upon receipt, the sample custodian removed the samples from the cooler, <br />inspected the contents, and logged the samples into ACZ's computerized Laboratory Information Management System <br />(LIMS). The samples were assigned ACZ LIMS project number L69169 The custodian verified the sample information <br />entered into the computer against the chain of custody (COC) forms and sample bottle labels. <br />All analyses were performed within EPA recommended holding times <br />fl'.si '9&+'a rKR". R;C••h '%.; ..��. -• a? �' orb. ��X� <br />These samples were analyzed for inorganic parameters. The individual methods are referenced on both, the ACZ invoice <br />and the analytical reports The extended qualifier reports may contain footnotes qualifying specific elements due to QC <br />failures. In addition the following has been noted with this specific project. <br />1. (N1) TOTAL DISSOLVED SOLIDS <br />Oven range is 80 C to 91 C. Over the weekend, the oven had a minor low temperature out of range. When the oven <br />temperature was checked on Monday 11/1/21, the min temp read at 76 7? C. The WG was removed from the oven on <br />11/1/21 when the oven was back in range <br />L6f1PWN-f�MT641 Page 2 of 28 <br />