Laserfiche WebLink
<br />Each applicant will be required to draft an Urban Runoff Control Plan and an <br /> <br /> <br />Erosion Control and Revegetation Plan to address temporary and permanent water <br /> <br />quality protection measures. No plan will show direct discharge of runoff into <br /> <br /> <br />adjacent wetlands or the river. All runoff will be primary treated through techniques <br /> <br />as specified in Part II, Section B. Notification will be given to the Corps on the status <br /> <br /> <br />of each project during all planning and construction stages.. <br /> <br />In addition two reclamation programs are proposed as additional compensation <br /> <br />for the removal of 13 acres of wetlands, these programs are more specifically <br /> <br />described in Part II, Section D. <br /> <br />Pro ject A proposes to reclaim an area approximately 400' )( 120' (1.2 acres) of <br /> <br />former wetlands adjacent to the Snake River, at the Roberts Tunnel site which is <br /> <br />approximately three miles upstream of Base II. The property is owned by the Denver <br /> <br />Water Board and their permission for the project is yet to be obtained. An estimated <br /> <br />17,800 cubic yards of tailings will be removed to be used as till material within Base <br /> <br /> <br />11. Using organic material and vegetation excavated from the permit areas, a 100 foot <br /> <br /> <br />strip of wetlands will be reestablished adjacent to the Snake River. Analyses of the <br /> <br /> <br />tailings composition are provided which indicate it is excellent fi.ll material and will <br /> <br /> <br />have no harmful impact to groundwater. <br /> <br />Pro ject 13 involves the passive treatment of acid mine drainage from the <br /> <br /> <br />Pennsylvania Mine. The mine is approximately three miles upstream of Base 11 on Peru <br /> <br /> <br />Creek, a major tributary to the Snal<e River. The proposed treatment process uses a <br /> <br />limestone barrier to remove heavy metals from the mine drainage. This drainage has <br /> <br /> <br />been shown to contribute significant levels of zinc and other metals to Peru Creek, <br /> <br />(See Appendix - Peru Cr. Study) Tr",atment would occur downstream from the mine <br /> <br /> <br />through a series of sedimentation ponds located on private land. The applicants agree <br /> <br /> <br />to build the treatment facilities and provide sufficient funds for its maintenance, until <br /> <br /> <br />such time as the Pennsylvania Mine is react.ivated, or the treatment is no longer <br /> <br /> <br />required. These funds will be held in trust, to be administered annually. <br /> <br />Both mitigation programs would be initiated in the Summer of '82, assuming the <br />permi t has been issued. <br /> <br />--2- <br />