Laserfiche WebLink
<br />Page 4 <br />acreage of "waters of the United States" as regulated by the U.S. Army Corps of <br />Engineers. <br />Item #9: Bond Calculation Issues <br />There will be no permanent buildings or structures built on site that will require <br />demolition. A completely portable processing plant (and related structures) will be used. <br />It is estimated that no more than ten acres will be excavated at any one time before <br />reclamation would commence. Reclamation would then proceed concurrently with the <br />mining throughout the life of the project. This ten acre figure is used here to calculate <br />volumes of topsoil and overburden that will be stockpiled on site. <br />One foot of topsoil will be stripped over the ten acre area and stockpiled. This amounts tc <br />16,135 cubic yards of topsoil. It is estimated that the average push distance will be 300 ft. <br />Approximately five ft. of overburden will be removed, which over a ten acre area will <br />amount to 80,666 cubic yards. This overburden material will be pushed an average of 300 <br />ft. onto the pit floors and side slopes for reclamation purposes. <br />The average depth of topsoil to be replaced will be approximately two ft. (topsoil will not <br />be placed on the pit floor which will ultimately be a pond bottom). The average depth of <br />overburden placement will be five ft. (same thickness that was removed). <br />Topsoil and overburden stockpile locations that are shown on Exhibit C-2 are designed to <br />avoid the 100 year flood plain. However, stockpiles will most likely be temporarily <br />located in the central portions of Phase 1 and Phase 2 (so that they will be close to areas <br />to be reclaimed). <br />Item #10: Sinclair Pipeline Easement Stability <br />A letter from a geotechnical engineer is attached addressing the Division's comments. <br />The operation will comply with the slope angle recommendations contained in the letter. <br />Item #] 1: Additional Structures within 200 ft. <br />a) Seep Drainage Ditch -the applicant hereby commits to moving the southern limit <br />of mining in Phase 3 to the north to be at least 200 ft. from the ditch. <br />b) The commitment in (a) above addresses the irrigation ditch south of the Seep <br />Drainage Ditch. <br />