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PERMFILE126519
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PERMFILE126519
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Last modified
8/24/2016 10:23:43 PM
Creation date
11/25/2007 3:34:49 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M2001001
IBM Index Class Name
Permit File
Doc Date
3/21/2001
Doc Name
CONSTRUCTION MATERIALS REGULAR 112 OPERATION RECLAMATION PERMIT APPLICATION FORM
Media Type
D
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No
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Exhibit Page 14 <br />SURFACE WATER MANAGEMENT: <br />Temporary structures will be constructed on the floor of the pit and in stripped areas to divert <br />water from active mining areas and to reclamation and long-term stockpile areas, or to a <br />discharge point. During the mining of the lower level, a Swale about one foot deep and with its <br />base about fifteen feet back from the toe of the working face will be established to reduce water <br />at the face of the excavation. Sumps (as well as sediment and wash basins and ditches) may <br />be dug during the mining of the upper level, if necessary to allow better drainage, both surface <br />and subsurface. The drainage from the active areas will be controlled and treated as required <br />by water quality regulations and permits to ensure that no sediment from the pit is discharged <br />into the Dolores River. <br />The pit floor is below the surrounding land and there will be no discharge under normal <br />conditions from the pit areas during mining, except by drainage through the pipe or by pumping <br />of water through surface-laid pipes to an ouffall in the river. The Dolores is a cold-water fishery; <br />discharge temperature regulation may be required. <br />During the winter months, gravity flow of water may be halted to protect the pipe from freezing. <br />Water collecting and flowing through the pit would then be allowed to rise to a stable level and <br />freeze, and then will be discharged after spring melt. When mining the lower level, no <br />dewatering will be done during the winter months. Openings will be established and maintained <br />through the berms (stockpiles) around the pit, in case of flooding of the Dolores River, blockage <br />of the pipe, or other events which might cause a surface discharge, to minimize erosion, <br />sedimentation, and traffic problems. As necessary, stockpiles may have perimeter <br />ditches/swales and berms with silt fence, straw bales, or rock check dams, to reduce/prevent <br />sediment in any runoff to the river. <br />ASSUMPTIONS USED IN MINING PLAN: <br />The mining plan is based on several key assumptions, stated herein for evaluation. These <br />assumptions are not intended to imply or claim that certain actions will be done. <br />1. Annual demand for sand and gravel from this pit will be approximately 140,000 tons. <br />Demand, and therefore production, may vary significantly from year to year, and therefore <br />acreages affected during a given year may be either larger or smaller than included in this <br />plan, thus impacting on stockpile size and other matter. <br />2. Activities on the site (stripping, mining, stockpiling, etc.) will be done primarily during the <br />later summer/early fall period, from mid-August to mid-November. <br />3. The upper 2 feet is considered usable topsoil but includes approximately 50% oversized <br />(cobbles, etc.) that can be screened out to improve soil and provide additional rock, but <br />need not be done for material used only for backfilling. <br />4. Water table in the pit area fluctuates seasonally and from year to year. <br />5. Wash water for processing will be recycled and will be mixed with storm water and <br />dewatering flows for discharge. <br />6. A plant will be on-site during the period of stripping and mining, so that large temporary <br />stockpiles of soil and raw material will be quickly processed and remain in existence fory~ ry <br />brief periods. rfeC@IV@d <br />MAR 21 2001 <br />Divisi~ p M ner~~8 Geoelo <br />~ This is described in the surface water management plan, which provides detailed information. 9Y <br />Four States Aggregates, LLC 15 MAR 2001 <br />Application for Permit: Line Camp Pit M-2001-001 FSA-LCP-D2-001 <br />
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