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have minimal subsoil profile development I[hick, organic-rich "A" horizons directly overlie sandstone
<br />bedrock), landscape slopes are steep to excessive (equipment mobility and efficiency is severely
<br />restricted), mixing will provide a more erosion resistant and stable seedbed surface IFoidell, and/or
<br />only the "A" horizon is salvageable IBuckskln, Routt, and Zoltay Variant) due to excessive clay in
<br />lower horizons.
<br />A thin veneer of suitable soil will be recovered from map Units 7 1 C, 1 1 D, 35D, and 35E. The :surface
<br />layer should have sufficient organic matter and roots to alleviate consistency, structure, and
<br />compaction problems during soil handling. No soil is available to be salvaged from the RO, FID, DL,
<br />W, and 103 map units. These maF~ units are void of soil due to natural phenomenon IR01, do not
<br />contain any soil because prior construction has destroyed, covered, or contaminated the soil resource
<br />IRD, DL, WI, or are not suitable nor recoverable due to very steep slopes, very thin soils, high rock
<br />fragment content, and intermingled rock outcrop 11031.
<br />No suitable soil can be recovered from Map Units 2F, 34F, 66F, and X8F because of very steep slopes
<br />(>45 percent). The equipment is severely limited and the operator's safety jeopardized on these
<br />slopes. These sites comprise only three percent of the total disturbance area in the first five-year
<br />permit term. SCC requests amine-wide variance pursuant to Rule 4.06.212) whenever these map
<br />units are to be disturbed (see Exhibit 9-1, Soil Types and Soil Salvage Map and Table 21-1, Soil
<br />Salvage Volume (Life-of-Minel. •
<br />Soil Storage. When the direct haul of soil is not feasible, the soil will be stored in approved stockpiles
<br />Isee Operations Plan, Exhibit 12-21. Soil stockpile Sites A, B, C, D, E, F. G. H, I, J, K, L and M will be
<br />used during the first permit term 11995-19991. Stockpiling of soil will be required for soil removal in
<br />the initial box cut, haul road, spoil stockpile areas, sediment pond, coal stockpile area, office and shop
<br />area, explosive storage area, and final pit%highwall reduction areas. Soil stockpiles for future
<br />disturbance will be located in stable areas where they will not be disturbed or contaminated by the
<br />ongoing mining operation and where the stored soil will not be lost to wind erosion or surface runoff.
<br />When a soil stockpile is placed, it will not be moved until soil is needed for distribution on graded
<br />areas. Stockpile locations were also evaluated and selected to minimize scraper travel distance, to
<br />reduce equipment cost, and to increase efficiency.
<br />All soil stockpiles will be clearly distinguished and identified by approved signs. Mine personnel are
<br />instructed that soil stockpiles are not to be disturbed or contaminated.
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<br />20 Revised 5/99
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