Laserfiche WebLink
Protection of Groundwater Resources <br /> As further described in Exhibit B, no continuously flowing groundwater source ("groundwater source") is <br /> expected to be encountered while developing the underground workings. In the unlikely event that a <br /> groundwater source is encountered, AMR will immediately notify the Division and cease further <br /> advancement of the underground workings. <br /> AMR is committed to preventing water from discharging from the underground workings to the surface. <br /> To ensure this commitment,AMR has designed a bulkhead assembly(Attachment C6)to permanently seal <br /> the drift at or very near to a groundwater source, if encountered. Upon notifying the Division of <br /> encountering a groundwater source,AMR will install the bulkhead at or as close to the groundwater source <br /> as possible with the objective of sealing the underground workings at the groundwater source and <br /> preventing a reservoir from backing up behind the bulkhead. The precise location of the bulkhead will be <br /> determined by the location of the groundwater source and the integrity of the surrounding rock. If <br /> groundwater is encountered and a bulkhead is installed, no further advancement of the underground <br /> workings will occur without AMR first receiving additional approval from the Division. <br /> Acid-Mine Drainage <br /> AMR is committed to preventing this operation from causing acid mine drainage. A major factor in the <br /> location and aspects of the proposed operation were determined by the presence of inert rock in the affected <br /> areas. As further described in Exhibit B, the topsoil and bedrock encountered in the affected areas do not <br /> leach metals or acid. <br /> To ensure that the waste rock brought to surface from underground does not leach metals or produce acid, <br /> AMR will complete representative Acid Base Accounting (ABA) and SPLP leachate analysis of rock <br /> encountered at every 300 feet of underground advancement. The methods and suite of ABA and SPLP <br /> analyses will be identical to the those relied upon for the characterization of topsoil and bedrock in Exhibit <br /> B. <br /> In the event that waste rock is inadvertently dumped on the waste rock dump that could potentially leach <br /> metals and/or produce acid ("non-inert rock"), AMR will immediately notify the Division and cease the <br /> dumping of additional waste rock on the dump. After which,using heavy equipment,AMR will gather and <br /> isolate the non-inert rock on the dump and blend it with the abundant inert rock present beneath the dump. <br /> The ratio of blending will be determined by the chemical characteristics of the waste rock and will be done <br /> to the extent necessary to render the composite of the blended rock inert. If this event occurs,no additional <br /> dumping will occur on the waste rock dump without AMR first receiving additional approval from the <br /> Division. <br /> Processing <br /> Drill samples and bulk samples will be shipped off-site for processing and analysis. No on-site crushing, <br /> washing, screening, leaching or other milling processes are proposed for this operation. <br /> Commodities <br /> The principal commodity to be mined from this proposed operation is silver. <br /> Page 4 of 4 <br />