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_INSPECTION - C1981012 (6)
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_INSPECTION - C1981012 (6)
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Entry Properties
Last modified
11/6/2020 7:11:52 AM
Creation date
11/2/2012 9:00:42 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981012
IBM Index Class Name
Inspection
Doc Name
Inspection Report
From
DRMS
To
Ron Thompson
Inspection Date
10/16/2012
Email Name
LDS
DIH
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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October 16, 2012 C-1981-012/New Elk Mine LDS <br /> • The sequence of culverts under the road up the west side of the RDA (C40, C-B, C39, C45, C-A)were all <br /> acceptable at the time of the inspection,but each will need to be cleaned at the inlet soon. <br /> Between the highway and the Purgatoire River: <br /> • Pond 4 was not holding any water. The outlet gate was closed (see photo 26). The emergency spillway <br /> was clear of vegetation. <br /> • The ditch D3 on the SW corner of the reclaimed DWDA needed to be built up,but the rest of the ditches <br /> in this area were in good shape. <br /> • Culvert C7 was clear,but C6 was partially blocked. <br /> • Neither containment 3 nor containment 4 was holding water. <br /> To digress slightly from the standard inspection report format,there are a number of related projects that <br /> suggest themselves in the same general area,based on observations made during the inspection: <br /> o First, since the new DWDA at the west fan has been approved(TR-65),the conveyor that drops <br /> onto the RDA conveyor is now redundant and should be removed <br /> o Removal of the conveyor would allow access to culverts C70 and C71. These culverts should be <br /> either removed to leave an open channel, or resized to allow a sensible hydraulic system. At the <br /> time of the inspection two 36"culverts from the pond 8 emergency spillway fed into a single 24" <br /> culvert, C70,which was partially blocked at the inlet, (see photo 29). <br /> o The berm outside of containment 3 had been compromised and must be restored, (see photo 28). <br /> The area east of here, disturbed by the burial of the power cables, could be reclaimed. <br /> o The silt fences at both ends of the topsoil SAE needed to be re-keyed. <br /> o Clean water ditch D 11 was not draining properly(see photo 32), and should be re-graded. <br /> o The downstream culvert C26 could be removed to reduce maintenance, restoring an open channel. <br /> o The upstream culvert C 14A was clear,but the discrepancy between the height of the culvert and <br /> the height of the CDOT culvert under the highway means that it cannot currently function as <br /> intended and should be lowered(see photo 30). The berm at the inlet to C 14A must be re- <br /> established to prevent disturbed area runoff flowing into the clean water system. <br /> o The other upstream culvert C30 was damaged in the middle and must be replaced,with at least 1' <br /> depth of cover(see photo 31). <br /> • C13 was clear,with water ponding at the inlet(see photo 33). <br /> • The ditches around the DWDA (D 12 and D 14)were sound, although a section of concrete culvert in D 14 <br /> protecting access to a water line valve (?) should not be seen as a permanent solution(see photo 34). <br /> South of the Purgatoire River: <br /> • Pond 1 was almost at the primary discharge level. <br /> • The culverts along the side of the road (C8, C9, and C9A)were all capable of passing water,but the outlet <br /> of C9 was partially blocked(see photo 41). <br /> • For most of its length, ditch D 16 was in good shape,but at the east end the entire hydraulic scheme was <br /> disrupted. A power pole had been installed in the middle of the ditch,preventing the flow of water to <br /> culvert C16A (see photo 42,the red line indicates the approximate line of the ditch). Two excavated holes <br /> were acting as sumps and were full of water. The ditch must be restored,taking into account the location <br /> Number of Partial Inspection this Fiscal Year: 2 <br /> Number of Complete Inspections this Fiscal Year: 2 <br /> Page 5 of 20 <br />
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