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2019-09-20_PERMIT FILE - C1981019 (4)
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2019-09-20_PERMIT FILE - C1981019 (4)
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Last modified
11/13/2019 8:34:44 AM
Creation date
11/13/2019 8:32:25 AM
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Template:
DRMS Permit Index
Permit No
C1981019
IBM Index Class Name
Permit File
Doc Date
9/20/2019
Doc Name
Pond As-Built
Section_Exhibit Name
Volume 18 Exhibit 7 Item 26 Part D
Media Type
D
Archive
No
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EXHIBIT 7, ITEM 23, PART D <br /> SEDIMENT POND ACCESS ROADS AND OTHER ACCESS ROADS <br /> This section addresses the design, construction, and as-built configuration of the access roads <br /> used to build, operate, and maintain the sediment ponds presented in Exhibit 7-23, Part B, and <br /> other access roads that are necessary to develop the Collom Pit and support future Collom Pit <br /> development activities. <br /> All access roads are designed to meet the requirements of Rule 4.03.2(3)(d) for cut slopes. <br /> Conditions may vary in the strata horizons of the cut areas encountered during construction of <br /> the access roads. Therefore, any valley fill, clay or residuum shale and mudstone deposits cut <br /> slopes will be no steeper than 2H: IV. All sandstones cut slopes will be no steeper than <br /> 0.25H:1 V and weathered shale cut slopes no steeper than IH:IV. <br /> Exh. 7-23, Figure D1, provides the design details for the access road on the west side of the <br /> sediment control system, and Exh. 7-23, Figure D2 provides the same information for the three <br /> access roads on the east side of the sediment control system. Similarly, Exh. 7-23 Figure D3 <br /> provides the as-built configuration for the Jubb Creek Access Road, and Exh. 7-23 Figures D4 <br /> provides the design information for the temporary access roads. <br /> The temporary access roads (Exh. 7-23 Figure D4) will be as their name implies temporary in <br /> nature. These access roads will be utilized to create access points to construct the sediment <br /> ponds on the west side of the Collom Pit area and to allow topsoil haulage to a topsoil stockpile <br /> during the initial development of the boxcut for the Collom Pit. The other access road will allow <br /> access for the shovel to walk into the Collom boxcut and commence mining of the pit. <br /> Rule 4.03.2(2)(b) states that no part of any access road shall be located in the channel of an <br /> ephemeral stream where the upstream watershed is at least 1 square mile. The temporary access <br /> roads will cross Little Collom Gulch which is an ephemeral stream, but the watershed above <br /> where the roads will cross is less than one square mile. Further, the temporary access roads will <br /> be fully disturbed by the temporary spoil pile and ultimately the Collom Pit. <br /> Rule 4.03.2(5)(a) requires all access roads to be surfaced with an appropriate material. The <br /> temporary access roads will not be surfaced with an appropriate material due to the short life- <br /> span of these roads. They will however when deemed necessary for the safety of equipment and <br /> personnel have crushed rock applied for traction purposes. This will process of applying rock <br /> will occur during inclement weather conditions, and will not be utilized when there are dry road <br /> conditions The temporary access roads will provide initial access to develop the Collom Pit and <br /> temporary out of pit stockpile, and these roads will have overburden placed on them or they will <br /> be mined through with in the first year of development. Surfacing these temporary access roads <br /> does not provide any benefit when they will be taken out of service in such a short window of <br /> time. <br /> Exh. 7-23D-1 Revision Date: 7/30/19 <br /> Revision No.: TR-133 <br />
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