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There <br />6.4.20(7)(b) <br />There are no Designated Chemicals to be used in this operation. Refer to Exhibit C, 6.3.3(2)(x) for a list of non- <br />designated chemicals to be used. There is also a complete collection of MSDS for these chemicals at the end of <br />Exhibit C. <br />There is no acid mine drainage from any adits, tunnels, or underground mine workings on this site either pre- <br />existing or proposed. <br />On a temporary basis, as part of normal operations, the gravity and flotation concentrate products are collected and <br />stored in Intermediate Bulk Shipping Containers which are palletized polyethylene containers surrounded by a steel <br />skeleton framework for protection from impact and crushing. These containers measure approximately 42" cubic. <br />At any time there may be upto 30 of these such containers stored on site, staged prior to transportation offisite. It <br />shall be noted these containers meet stringent DOT standards for transporting this sort of material. <br />6.4.20(7)(c) <br />There wilt be no changes to the current, natural geological structure of the permitted area. All proposed operations <br />are surface in nature. The geochemical conditions will only improve by removing the acid forming materials <br />(sulfide minerals and heavy metals) from the pre-existing waste rock. <br />6.4.20(7)(d) <br />There are two groundwater monitoring points within the Ownership Boundary, shown in Exhibit A and E. A <br />monitoring well has been installed immediately down-gradient from the Tailings Impoundment Liner and Leachate <br />Collection System. This monitoring well will be sufficient to detect any breach or leaks in the composite liner <br />system. Any seepage and/or infiltration past the leachate collection system can also be detected here. A monitoring <br />well has also been installed up-gradient of the Tailings Impoundment. Testing done here provides a baseline <br />comparison with any results taken from the down-gradient monitoring well. See Exhibit E drawings for monitoring <br />well locations. <br />• These wells were installed at a depth of 20' (twenty feet) into solid bedrock. The wells were drilled at 2.375" <br />diameter and cased with nominal 2" perforated IfDPE plastic pipe to allow for any leakage/seepage to be measured <br />and/or collected. The pipe was grouted at the ground surface interface to prevent surface water inclusion. A <br />lockable cap has been installed. There was no groundwater detected at the time of installation. See the figure that <br />follows for an illustrative schematic of this installation: <br />Lod-ble <br />• <br />2' BR-11 HOPE <br /> 5` Bore <br /> <br /> <br /> <br /> <br /> <br /> <br />Non-Shrink Grout <br />Grade Llne- x2.37 <br />1lineral Topsci J <br />Gravely, <br />urxonsoudated sou ? <br />Moderntely <br />Weathered Bedrock, <br />Slightly <br />Weathered Bedrock <br />bedrock- <br />Perforated, 3/16° DID,., ?? 11 <br />Spaced I Cotunns, <br />V Annular Ruw> <br />Monltoring WQtt <br />Construction <br />Page 5 of 31