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2016-12-23_PERMIT FILE - C1982056A (8)
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2016-12-23_PERMIT FILE - C1982056A (8)
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Last modified
3/21/2017 9:27:01 AM
Creation date
2/13/2017 7:47:30 AM
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Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
12/23/2016
Section_Exhibit Name
2.04 Environmental Resources
Media Type
D
Archive
Yes
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Saturated Backfill <br /> Ground water occurs under unconfined conditions in the backfilled areas of adjacent surface mines. The backfill <br /> ranges in thickness from 0 to 160 feet, and consists of unconsolidated,mixed overburden material varying in size from <br /> fine-grained particles to boulders. The spoil material has been regraded and a large portion has been fully released <br /> from bond liability. Ground water has accumulated in the reclaimed backfill from infiltration of rainfall and <br /> snowmelt. The hydrologic characteristics of the backfill material have been examined in a separate report prepared <br /> for CYCC and submitted to the CDRMS(formerly the CMLRD) in January, 1986. A copy of the report is included as <br /> Exhibit 35,Backfill Hydrologic Evaluation. <br /> The water quality characteristics of the backfilled areas of the adjacent surface mines are represented by analyses of <br /> discharge from these materials near Sediment Pond F of CYCC's Eckman Park operation. This data shows a fairly <br /> consistent water quality characterized by TDS concentrations of about 4,000 mg/1 and a strong calcium- <br /> magnesium-sulfate dominance(Figure 4-g,Ground Water Quality Data). <br /> Known Uses of Ground Water <br /> As described in the 1983 PAP, ground water in the Twentymile Park Basin is not suitable for most domestic uses. All <br /> existing registered wells in the permit and adjacent areas are owned by TC, and utilized for washdown, dust control <br /> and other mine-related purposes. Based on accepted water quality standards, use of ground water in the general area <br /> is restricted to livestock watering, irrigation,and limited domestic use. <br /> A review of Colorado State Engineers records indicates several adjudicated wells within the general vicinity of the <br /> Permit Area. Wells falling within the Permit Area are listed on revised Table 9, Summary of Ground Water Rights, <br /> and located on revised Map 15, Alluvial Valley Floors and Water Rights. The location and completion information <br /> for these wells was reviewed to assess whether or not there is the potential for adverse impacts to these wells as a <br /> result of planned mining and related operations. TCC also conducted an inventory of Trout Creek sandstone wells <br /> in the area, including field locating the wells and measurement and recording of baseline water levels. <br /> Several wells in the vicinity of the Permit Area are completed within the colluvium of Trout Creek and Middle <br /> Creek, upstream from any mine discharge or affected bedrock discharge effects. Two wells (Robert George and <br /> Rausler), located in the Foidel Creek drainage in Sections 22 and 27, TSN, R86W, are completed in the Upper <br /> Williams Fork Formation, probably in the Holderness member above the Twentymile Sandstone. Five wells (John <br /> Adams 1 & 2, Terry Green, Energy Fuels Corp., and New Energy No. 6), which appear to be completed in the <br /> Trout Creek sandstone, are indicated in the State Engineer's records. The Trout Creek sandstone potentiometric <br /> levels may be lowered if significant mine inflows from this unit are realized as described in the Probable <br /> Hydrologic Consequences section of the permit application. Two of these Trout Creek sandstone wells, both <br /> recorded as being located in Section 13 of TSN, R86W could not be located in the field by TCC and are assumed <br /> abandoned, not in use or the locations recorded in the State's files are incorrect. The other three wells, one of which <br /> is owned by TC, have been located and baseline water levels were recorded on June 25, 1986 for two of the wells <br /> as follows: <br /> WELL QTR/QTR SECTION TOWNSHIP RANGE WATER LEVEL(FT. <br /> BELOW TOP OF CASING <br /> Energy Fuels NESE 02 5N 86W 33 <br /> Corp. Well <br /> Terry Green SENW 36 5N 86W 65 (Pumping Level) <br /> Well <br /> New Energy SWNW 32 5N 86W Not Measured <br /> Well No. 6 <br /> TC extended into the EMD, developing the 9- and 10-Right Gate-road extensions. The wells which are located <br /> within or adjacent to the area overlying this area are presented in Exhibit 6B, Summary of Ground Water Rights. <br /> TR13-83 2.04-24 11/03/14 <br />
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