|
months of disturbance, although natural revegetation typically occurs much sooner due to the limited timeframe and
<br />extent of the associated disturbance. Occasionally perforated PVC pipe may be inserted in a completed borehole,
<br />and the remainder of the hole backfilled with clean gravel, as a temporary piezometer installation to measure any
<br />fluctuation in water - levels. This type of piezometer installation is normally very temporary (typically used less
<br />than a month) and will not impact groundwater due to the shallow depth and use of natural cuttings as backfill.
<br />Any piezometer installations are reclaimed by either pulling the PVC pipe and placing additional fill, or plugging
<br />the PVC pipe in -place using bagged bentonite grout, then capping the installation with a minimum 1.5 -foot surface
<br />plug of natural clays or cement with a site marker.
<br />(5) Topsoil. A narrative explaining the method of removal and the amount to be removed and the plan for
<br />storage of topsoil, subsoil, and other material within the permit area subject to requirements of the topsoil removal
<br />performance standards of 4.06.2. This narrative shall specify the depth of material to be salvaged from all disturbed
<br />areas based on the soil information required by 2.04.9 and shall specify the volume of each type of material to be
<br />salvaged. A map of any proposed storage structures shall accompany the narrative. The maps shall be prepared
<br />according to the requirements of 2.10.
<br />19 X3 ZIMM �
<br />See response to 2.05.4, Reclamation Plan, below for details concerning the Foidel Creek Mine. TC does not propose to
<br />disturb any additional land within the Fish Creek Tipple permit area. The Fish Creek Tipple and adjoining haulroad
<br />were constructed prior to the promulgation of regulations mandating topsoil salvage and storage. Thus, the best
<br />plant growth medium available is a mixture of spoil and soil materials which will be substituted for topsoil. This
<br />situation is further discussed within the Fish Creek Tipple /Loadout Appendix, pages 2.04 -36 through 2.04 -38 and
<br />pages 2.05 -37 through 2.05 -38 of Volume VIII.
<br />Eastern Mining District Dewaterine Facility - The Eastern Mining District Dewatering Facility will require
<br />salvaging and stockpiling approximately 13,360 CY of topsoil from the access road and the facility site. During
<br />upgrading of the road, approximately 3,600 CY of topsoil will be windrowed to the side of the road. The topsoil
<br />along the length of the road is approximately 30 inches deep. The facility site will require salvaging and
<br />stockpiling approximately 8,300 CY of topsoil. The topsoil from the site area is approximately 30 inches deep. A
<br />test pit will be dug to verify the topsoil depth obtained from previous soil mapping work. The stockpiled topsoil,
<br />which is located within the pad area, will be stabilized with the topsoil stockpile stabilizing seed mixture.
<br />Additionally, approximately 6,295 CY of topsoil will be salvaged from the treatment pond site. This site has been
<br />relocated closer to the road to facilitate delivery of chemicals.
<br />Bleeder Fan - The bleeder fan facility will require salvaging and stockpiling approximately 4,700 CY of topsoil
<br />from the access road and the facility site. During the upgrading of the road, approximately 2,800 CY of topsoil will
<br />be windrowed to the side of the road and left in place. The 1,200 CY that will be salvaged from the road extension
<br />will be placed in the stockpile that will be established on the fan pad. In addition to the topsoil stockpiled from the
<br />road extension, approximately 740 CY will be salvaged and stockpiled from the pad. The soil resources
<br />information was derived from information presented in Exhibits 7 and 8, Soil Profile Description and Soil Mapping
<br />Unit Descriptions, Map No. 19, Mine No. 3, Soils presented in permit C -84 -062. These materials are incorporated
<br />herein by reference. At the bleeder fan site, TC will establish a test pit to verify topsoil depths prior to salvaging
<br />topsoil. The stockpiled topsoil, which is located within the pad area, will be stabilized with the topsoil stockpile
<br />stabilizing seed mixture. Prior to salvaging any topsoil from the site, a T & E species reconnaissance for Ute
<br />Lady's Tresses, Spiranthes diuvialis, will be conducted, and the results forwarded to the Division. It is not
<br />anticipated that this species will be found, as the site appears to be outside of its natural range.
<br />18 Right Ventilation Shaft (TR04 -44)
<br />Approximately 4,400 feet of the access road crosses upland areas, with the remaining 2,700 feet crossing lowland
<br />areas where road construction will involve removal of any large vegetation and stripping and stockpiling of other
<br />vegetation, topsoil, and organic materials. Similarly, the shaft pad is located in an upland area. Given an average
<br />topsoil depth of approximately 6 inches in the upland area and a total road disturbance area of approximately 5.7
<br />acres, approximately 4,600 cubic yards of topsoil will be salvaged from the road corridor, and 2,000 cubic yards
<br />from the 2.5 acre pad area. Prior to initiating soil removal, the stream buffer zone will be marked with identifying
<br />signs to prevent surface disturbance within buffer zone areas. The topsoil from the road corridor was initially
<br />windrowed adjacent to the road and topsoil from the pad area was placed in a stockpile adjacent to the shaft pad and
<br />MR14 -283 2.05 -84.10 10/30/14
<br />
|