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2023-01-04_PERMIT FILE - M2022013 (2)
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2023-01-04_PERMIT FILE - M2022013 (2)
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Last modified
1/5/2023 8:47:46 PM
Creation date
1/4/2023 7:42:21 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M2022013
IBM Index Class Name
Permit File
Doc Date
1/4/2023
Doc Name Note
Cover Letter
Doc Name
Adequacy Review Response #2
From
Raptor Materials, LLC
To
DRMS
Email Name
RDZ
MAC
Media Type
D
Archive
No
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application stated, followed by a blow-up of the feature visible near the #10 <br /> Piezometer, under Exhibit G: Water Information Map: <br /> � 13 <br /> 6.4.5 EXHIBIT D- Extraction Plan <br /> preferred native seed mixture offers opportunity to gauge the potential <br /> performance of the selected species prior to utilizing it over larger areas <br /> requiring reclamation later in the life of the resource recovery operation. <br /> Once vegetation is established over the initial reclamation soil stockpiles, <br /> they will likely remain untouched for the life of the operation until final <br /> reclamation of remaining affected lands takes place. Where concurrent <br /> reclamation is possible, operations will utilize soil in an over the shoulder <br /> method when practical. In this manner, reclamation is expedited without <br /> increasing soil stockpile volumes while reducing expenditures related to <br /> labor, handling, and time. <br /> Dewatering: As extraction activity progresses into the aggregate profile, <br /> groundwater must generally be removed in advance through the use__pf <br /> pumps and subsequent discharge into area tributaries. A complete <br /> dewatering evaluation was performed by AWES in their report of 27 July <br /> 2020, as provided at the back of Exhibit G: Water Information. The report <br /> concludes that 'the results of analytical and numerical solutions indicate that <br /> the proposed mine dewatering activities will not adversely affect the regional <br /> groundwater hydrology.' The reader is further assured that all discharge of <br /> waters will be conducted under an approved CDH discharge permit. <br /> Initial dewatering of the property in preparation for extraction and resource <br /> recovery will occur by establishment of a dewatering pump and/or well in the <br /> Southern boundary near an existing agricultural pond. The point of <br /> discharge is on Exhibit G: Water Information Map. Other discharge locations <br /> may occur in time as needed and otherwise approved under the applicable CDH <br /> discharge permit requirements. Subsequent CDH approved discharge locations <br /> will be field fit and the location updated in the following OMLR Annual Report. <br /> 46 Page <br /> Correspondence to the Colorado Office of Mined Land Reclamation—Reply to Rob Zuber,EPS—Adequacy Letters of 24 dune and 5 <br /> August 2022; in the matter of the Two Rivers Sand,Gravel and Reservoir Project—M2022-013. <br />
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