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PlLmmL Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487 (800) 334-5493 <br />Rio Grande Silver, Inc. July 24, 2015 <br />Project ID: BO 33504 <br />ACZ Project ID: L25209 <br />ACZ Laboratories, Inc. (ACZ) received 5 miscellaneous samples from Rio Grande Silver, Inc. on July 1, 2015. The samples <br />were received in good condition. Upon receipt, the sample custodian removed the samples from the cooler, inspected the <br />contents, and logged the samples into ACZ's computerized Laboratory Information Management System (LIMS). The <br />samples were assigned ACZ LIMS project number 1-25209. The custodian verified the sample information entered into the <br />computer against the chain of custody (COC) forms and sample bottle labels. <br />All analyses were performed within EPA recommended holding times <br />SAnalysis <br />ample <br />samples were analyzed for inorganic, organic parameters. The individual methods are referenced on both, the ACZ <br />invoice and the analytical reports. The following required further explanation not provided by the Extended Qualifier Report: <br />1. For the Mercury value flagged with a "Q5", the sample was preserved in the clean room upon arrival at the lab, which is <br />acceptable within the method. <br />2. For TDS and TSS values flagged with an "N1", the dessicator was out of specifications at 38% on 7/6/15. <br />L +902'9W57 Page 2 of 45 <br />