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HYDRO22671
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HYDRO22671
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Entry Properties
Last modified
8/24/2016 8:43:42 PM
Creation date
11/20/2007 3:11:09 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980006
IBM Index Class Name
Hydrology
Doc Date
3/18/1994
Doc Name
REQUEST FOR PERMIT CONVERSION
From
TERRAMATRIX
To
WQCD
Permit Index Doc Type
NPDES Permit
Media Type
D
Archive
No
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Mr. Jon Kubic <br />December 17, 1993 <br />Page 2 <br />Ferdinandson did indicte that there is a grace period during which discharge an oavr <br />while the operator pursues artifiction. <br />Whole Effluent Toxidty (WE'i') Testing - Bued on our conversations WET testing, <br />using both fathead minnows and Ceriodaphnia, will be required. The ncav permit <br />specifies quarterly WET testing and you indicted that a minimum of one-year's data is <br />normally required. Since mine water discharge will probably only occur during the <br />period from December 1993 through May 1994 it may be more appropriate to specify <br />WET testing for the initial discharge and follow-up testing during first or second quarter <br />1994 only if any problems are indicated by the initial test rerults. Following completion <br />of mine discharge, which should occur during second quaver 1994, [he need for WET <br />testing is eliminated. <br />It may simplify overall compliance and repotting efforts if the final permit includes <br />provisions to return to the eaisting monitoring framework and effluent limitations once <br />mine water discharge is completed. <br />WQCD Biomonitoring Guidance Docurttent - We understand that you will provide <br />us with a copy of this document. <br />Permit References -The drab permit included references to the Coal Buin Mines and <br />Mid-Continent Coa] Company in some of the stormwater "boiler-plate" sections <br />(Rationale - Pg. 8 and Pan I - Pgs. 11 through 13). Theca references should be revised. <br />stormwater Management Plan -Based on our conversation, a stormwater management <br />plan will be required under the new permit. Given the implementation date for this plan <br />of May 31, 1994, all mine water discharge should be complete and it may be appropriate <br />to return to administration of discharge under the general permit. Please provide us with <br />guidance on whether or not this could be accomplished and on how to proued. <br />The permit specifies implementation of a stormwater management plan by May 31, 1994, <br />but indicates that the first report under this plan would be due in February 1994. This <br />discrepancy should be corrected. <br />New vs. Existing Facility -Referring [o the Rationale discussion on [he top of Page 9, <br />this should indipte Rerr u an existing rather than a new fadlity thus retaining Rerr's <br />rights relative to consideration of economic and other impacts with respect to appliable <br />effluent limitations. <br />Metals Malysis -The required one-time metals analysis is designated to occur prior to <br />initial discharge (Rationale - Pg. 9) and in conjunction with initial discharge (Part I - Pg <br />vii). This discrepancy should be resolved. <br />From a practical standpoint, sampling and analysis ac the time of discharge would be <br />preferable, both in allowing Rerr to disrharge as soon u possible and in providing an <br />aaurate assessment of true discharge water quality. Rerr plans to discharge only after <br />adequate retention to allow settling of suspended solids from the pit water. Sampling <br />
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