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PERMFILE110947
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PERMFILE110947
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Entry Properties
Last modified
8/24/2016 10:07:35 PM
Creation date
11/24/2007 8:08:05 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1999004
IBM Index Class Name
Permit File
Doc Date
5/19/1999
Doc Name
RESPONSES TO ADEQUACY CONCERNS LETTER OF APRIL 27 1999 PN M-99-004 TABLE MOUNTAI QUARRY
From
MARK A HEIFNER
To
DMG
Media Type
D
Archive
No
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Page 5 • . <br />be associated with the sandstone portion of the Morrison. However, these additional seeps and <br />wet spots may not actually be associated with same source that supplies the spring. These smaller <br />features seem to be far more ephemeral than the spring. <br />Because there is a considerable vertical distance (about 250 fee[) <br />between the quarry and the formation that acts as a weak aquifer and they are separated by the <br />shale portion of the Morrison it is unlikely any water in the quartzite or in the lower portions of <br />the Dakota even connect to the sandstone portion of the Morrison or the Lykins, unless [here are <br />small hidden faults or joints that allow a connection. There is little evidence for any large faults. <br />As far as potential blasting effects on the water producing <br />formations, that seems highly unlikely, considering both the lateral and vertical distances, when <br />the amount of quartzite to be mined is so thin and will be mined with low intensity blasts. As <br />stated in a previous response, high intensity blasting would very likely create rocks that are too <br />small to be used primarily for rip rap. <br />Furthermore, the lease requires tha[ at least 5 feet of quartzite be <br />left on top of the underlying Dakota sandstone. Therefore, breaking through to the Dakota is not <br />supposed [o occur. <br />In conclusion, due to the structure of [he mountain and the <br />apparent lack of connection between the top of the mountain and the springs, i[ does not appear <br />likely that the mining would have any effect on this spring or any other springs, seeps, or wet <br />spots. <br />Concern B.3.: Storm water discharge permit. <br />Response: A storm water discharge permi[ is being applied for. Although <br />retention of storm water within the quarry is desirable to avoid surge flows into the drainages, <br />total retention is not desirable due to potential effects on water rights downstream in the Beaver <br />Creek and Arkansas drainages. Also, the impervious rock to remain would require stormwater to <br />evaporate before mining could proceed in a water accumulation area. <br />Water Information (Exhibit G) - <br />Concern A: Mining through ephemeral drainages in Phase 1 <br />Response: The only ephemeral drainage in Phase 1 exists on the south end of the <br />Phase and south of the current disturbance area. If there is quartzite in chat area then yes, the <br />mining will mine through that drainage. However, as that drainage extends only a short distance <br />into Phase 1, mining in that area would be rather shallow so the 25:1 to 100:1 outlet slope could <br />be created without having to do extensive backfill to rebuild the topography. As stated in the <br />plan, the drainage from the quarried area will be reconnected with the existing drainage at the end <br />of the mining and reclamation so there is no change in the drainage pattern downslope from the <br />quarry. <br />Concern B: Source of spring water and other springs. <br />Response: The source of the water in the main spring and all the other little seeps <br />and wet spots is an interesting one. If there is essentially no input from the north side of the <br />
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