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ENFORCE29819
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ENFORCE29819
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Entry Properties
Last modified
8/24/2016 7:36:44 PM
Creation date
11/21/2007 12:23:53 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1990070
IBM Index Class Name
Enforcement
Doc Name
Documents distributed prior to hearing
Media Type
D
Archive
No
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(Page 3) <br />MINE ID # OR PROSPECTING ID # M-1990-070 <br />4NSPECTION DATE 4/26/04 <br />INSPECTOR'S INITIALS WHE <br />he following problems (PB) and/or possible violations (PV) (and suggested corrective actions) were identified during this <br />,~ ~spection. The problems should be corrected by the dates given, or they will become possible violations. The possible <br />violations should be corrected by the dates given to reduce their severity when considered by the Mined Land Reclamation <br />Board. The inspector noted on the previous page should be notified of all corrective actions taken. <br />PROBLEMS/POSSIBLE VIOLATIONS <br />AND <br />CORRECTIVE ACTIONS <br />Mining activities do not appear to be occurring in accordance-with the approved <br />plan. Permit documents indicate that excavation activity would maintain a <br />3H:1 V and/or 4H:1 V slope but observations made during the inspection and <br />recorded in this report indicate that excavation from the toe of slope has <br />resulted in 1 H:1 V and steeper slopes. The chosen post-mining land use, <br />rangeland, requires slopes no steeper than 3H:1 V. Therefore, the steep slopes <br />created by the excavation activity may prohibit the operator from accomplishing <br />the requirements of the approved reclamation plan. The operator has indicated <br />that the 4H:1 V slopes described in the original permit application were in error. <br />The operator's June 23, 2001 correspondence states that 1 H:4V (75 degree) <br />slopes were intended. <br />CORRECTIVE ACTION: Within 60 days of the signature date of the April 8, <br />2004 inspection report, by June 21.2004, submit an Amendment to the permit <br />to correct the slope errors of the original permit application and revising the <br />post-mining land-use from rangeland to something compatible with steep slope <br />conditions. Options for post-mining land use are identified in Rule 3.1.1. The <br />Amendment to the permit shall be submitted in accordance with Rule 1.10 and <br />shall contain a geotechnical stability exhibit, which satisfies the applicable <br />requirements of Rule 6.5. The geotechnical stability exhibit shall specifically <br />address potential for damage to County Road 25 resulting from mining <br />activities. <br />2. Mining activities appear to have over-excavated the toe of slope resulting in <br />steep and unstable slopes. Active slumping of slope material was observed <br />during the time of the inspection. The slump scarp was visually estimated as <br />being 200 feet above the toe of slope (pit floor). The slump scarp approaches <br />County Road 25, located approximately 300 feet above the toe of slope. <br />Existing maps in the permit lack sufficient detail to determine the exact location <br />of the permit boundary, as necessary to verify that the slump scarp remains <br />within the permit boundary and no off-site damage has occurred. <br />CORRECTIVE ACTION: Within 30 days of the signature date of the April 8, <br />2004 inspection report, by Mav 22.2004, submit updated maps of the permit <br />area, which satisfy the basic map requirements of Rules 6.2.1(2), 6.3.3, 6.3.4, <br />and 6.3,5. The updated maps must show the current location of the slump <br />scarp in relation to the permit boundary. The permit boundary must enclose all <br />lands affected by the mining activity. <br />CORRECTION <br />DATE <br />June 21.2004 <br />PB or PV: PB <br />TOPIC(S): MP <br />RS,_, <br />Mav 22.2004 <br />PB or PV: PB <br />TOPIC(S): AR <br />OD , BG , <br />
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