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PERMFILE119955
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PERMFILE119955
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Entry Properties
Last modified
8/24/2016 10:18:53 PM
Creation date
11/25/2007 7:59:07 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1997054
IBM Index Class Name
Permit File
Doc Date
2/19/1998
From
DMG
To
MIKE
Media Type
D
Archive
No
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<br /> <br />It does not appear at the present time that the applicant has <br />provided the required baseline studies of surface and ground water, <br />acid mine production analysis (if pyrite is present), and <br />operational and reclamation features that will protect surface and <br />ground waters from pollution. A complete review of the sources and <br />pathways for any contaminants to reach surface and/or ground waters <br />must be conducted. Until all of this information is forthcoming, <br />the applications is incomplete and cannot be approved. <br />We suggest that if field analysis determines that acid production <br />is possible, then additional static and dynamic tests should be <br />conducted to more fully ascertain the potential for acid <br />production. Proper attention should be made to ensure that testing <br />is done under conditions which include the presence of thiobacillus <br />ferroxidans and that short-term neutralization reactions in the <br />sample do not skew the results towards an overly optimistic acid <br />neutralization/production ratio. In any event, the Division should <br />not complete its review of the application until all long-term <br />kinetic and batch tests have been completed (i.e., at least 20 <br />weeks). <br />Another important concern regards the potential for the local clay <br />to release phosphorus (primarily via sediments) to the Arkansas <br />River system. Much of the clay in Colorado does contain <br />phosphorous. Eutrophication of reservoirs and lakes in the system <br />is a serious problem as evidenced by NWCCOG's 1996 white Paper on <br />the subject. The White Paper was based on the Health Department's <br />Section 305(b) report. It noted that 9 out of 12 publicly owned <br />reservoirs/lakes on the Arkansas were eutrophic. The Division <br />should ensure that the Parkdale Project does not in any way <br />contribute to this problem. <br />The Project's proposed sedimentaticr. pcnds raise a number of <br />questions as well. First, has the applicant applied for an NPDES <br />permit for the .discharge from these likely unlined ponds into the <br />Arkansas system? The fact that the ponds may first seep into local <br />groundwater before reaching a surface stream does not disqualify <br />the ponds as point sources under the Clean Water Act. What <br />sediment loading will result from the ponds? Along these lines, <br />what are the short and long-term operation/maintenance/treatment <br />costs associated with these ponds/berets? Under state law, such <br />costs must be included in the required bond before the application <br />can be approved. <br />
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