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2018-04-05_REVISION - C1981020
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2018-04-05_REVISION - C1981020
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Entry Properties
Last modified
4/9/2018 12:07:44 PM
Creation date
4/9/2018 9:50:02 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981020
IBM Index Class Name
Revision
Doc Date
4/5/2018
Doc Name Note
Proposed Decision Findings & Cost Estimate
Doc Name
Proposed Decision and Findings of Compliance
From
DRMS
To
CAM Mining, LLC
Type & Sequence
RN7
Email Name
JHB
Media Type
D
Archive
No
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of the application). These soils were classified to the series and subgroup level, <br />respectively. <br />Sufficient suitable soil was determined to be available in the coal waste disposal area <br />to replace a 6 inch top -dressing over a 3.5 foot thickness of non-toxic cover soil. Topsoil <br />from initial salvage operations during the fall of 2004 was stored in a designated topsoil <br />stockpile located on the north side of the haul road, adjacent to the waste disposal <br />site. Subsoil suitable for non-toxic cover material has been stored in a designated cover <br />soil stockpile on the south side of the haul road in the same vicinity. The major portion <br />of the topsoil and cover soil material in these stockpiles was utilized for final <br />reclamation of the coal waste disposal pile in 2007. The remaining topsoil material was <br />been placed on sediment pond footprint during reclamation in 2014. <br />Although no topsoil was salvaged from the mine bench and road areas prior to initial <br />disturbance, minor amounts of suitable soil material have sloughed off road cut slopes <br />and accumulated in culvert inlet sumps during the life of the operation. This material was <br />stored in two small stockpiles, one designated topsoil pile adjacent to the lower road, <br />west of the coal waste disposal area, and a second dirt/topsoil stockpile located on the <br />mine bench. The location of both stockpiles, as well as the location of the waste disposal <br />site topsoil stockpile, is indicated on Figure 2.2-1 of the permit application. Soil from <br />both of these sources was used for final surfacing of the regraded mine bench areas in <br />2007. <br />The material from the mine bench and lower road stockpiles was used as topdressing for <br />final reclamation of the mine bench area. No topdressing was applied to regraded <br />segments of the upper access road. Sampling was conducted by the operator that <br />documented the suitability of near -surface materials in the area of the mine bench and <br />upper access road for use as plant growth medium. The operator tested the soil surface <br />in the various mine area permanent reclamation areas in 2007. Analyses indicated a <br />phosphorus deficiency associated with soils used in final surfacing of the portal bench <br />area. Phosphorus was incorporated into the soil prior to seeding of the permanent seed <br />mix. <br />The Munger Canyon site is located in an area which characteristically receives less than <br />ten inches of rainfall annually, and a significant component of the precipitation is <br />typically from short duration, high intensity rainfall events. In order to enhance the <br />potential for soil moisture retention, provide suitable sites for seed germination and <br />seedling establishment, and reduce erosion on steep sites during the early stages of <br />reclamation, the operator implemented an extensively roughened seedbed by track hoe <br />gouging in association with the 2007 reclamation project. <br />The Division granted a variance from topsoil removal in accordance with Rule <br />4.06.2(2)(a). This variance applies to the mine bench area and access road that were <br />constructed prior to August 3, 1977. No topsoil was salvaged or required to be salvaged <br />at the time of the disturbance. <br />23 <br />
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