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2016-01-12_REVISION - M1985112 (7)
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2016-01-12_REVISION - M1985112 (7)
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Last modified
6/15/2021 2:33:18 PM
Creation date
1/14/2016 11:45:52 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1985112
IBM Index Class Name
Revision
Doc Date
1/12/2016
Doc Name
3rd Adequacy Letter Response AM01
From
Loloff Construction, Inc.
To
DRMS
Type & Sequence
AM1
Email Name
PSH
WHE
Media Type
D
Archive
No
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EXHIBIT D <br /> MINE PLAN <br /> The Loloff Pit is an operational sand and gravel mine,with this application being for the expansion of the <br /> existing reclamation boundaries to include 4.24 acres of additional mining area. The site is <br /> approximately 55.17 acres with 42.7 acres of impacted area currently permitted under Permit M-1985- <br /> 112 on file with the Colorado Division of Reclamation Mining&Safety. The permit area of 55.17 acres <br /> shall remain unchanged, however,the mine and reclamation limits are proposed to be increased with <br /> this amendment. <br /> Exhibit C shows the current permitted mining area and Exhibit D shows the proposed areas to be <br /> affected under the amendment to the reclamation permit. The affected areas include Area 1 in the <br /> northeast corner of the property that was identified as a shop and storage area in the original permit <br /> application. The property ownership changed hands over the two years and it is the new owners desire <br /> to mine this area as it contains approximately 450,000 tons of material with an average depth of 45 feet <br /> in the northeast corner. The other area where the modified mine boundaries are being requested is in <br /> the south west corner of the property identified on the map as Area 2. This area was disturbed by <br /> previous operators and this amendment includes this disturbance. This amendment shall accommodate <br /> the minimum offsets while maximizing the water storage volume for post reclamation use. This area is <br /> not a mining area as much as it is an amendment to the reclamation plan. The modifications proposed <br /> in Area 2 do not create any additional encroachment of existing structures. This area of impact is <br /> approximately 0.25 acres and there is not any significant depth of material. <br /> The current method of mining is a dry mining operation with de-watering occurring in the southeast <br /> corner of the property. De-watering trenches have been excavated and the sand and gravel is <br /> subsequently mined using an excavator to load haul trucks to haul material to a stockpile to feed the <br /> crusher plant. The crusher plant is loaded with front end loaders and the final product of road base will <br /> be loaded into trucks with front end loaders from a stockpile. The pit is currently mined in areas of 15- <br /> 20 acres at a time with 5-10 feet of depth of material. Stability analysis were performed with the Loloff <br /> Pit Permit M-1985-112 Technical Revision No. 1 and revised with this amendment to include the slurry <br /> wall. All mining techniques submitted with TR-01 will apply to the amended areas to be mined. The <br /> results of the stability analysis have been attached for your review. There is no use of explosives on this <br /> site and there are no explosives to be stored on site. <br /> The material being mined currently is sand and gravel that is crushed and screened to create various <br /> road base products or it is sold as pit run and used for construction materials. These construction <br /> materials are being utilized in the oil and gas fields for pad site construction and with the current market <br /> in new site development,the intended timeline for the completion of the reclamation of the pit is <br /> 2017/2018, but is subject to change as the market changes. It should be noted that the slopes are being <br />
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