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2003-04-22_REVISION - M1999004
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2003-04-22_REVISION - M1999004
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Entry Properties
Last modified
6/15/2021 5:49:49 PM
Creation date
11/22/2007 1:26:12 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1999004
IBM Index Class Name
Revision
Doc Date
4/22/2003
Doc Name
Adequacy Response
From
Castle Concrete Company
To
DMG
Type & Sequence
AM8
Media Type
D
Archive
No
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Page 2 <br />Adequacy Response <br />Table Mountain Quarry -Amendment <br />April 22, 2003 <br />Presently, runoff from Area C, when it occurs, follows a pattern of a converging sheet flow. That is, water <br />tends to flow across the land on the north end in a more ox less uncontrolled Fashion. But as It moves Eaxthex to the <br />south toward the rim of the mesa what little doesn't seep into the soil tends to concentrate in shallow swales. These <br />swales have anon-continuous slope with many small hollows and depressions along the way. Near the edge of the <br />mesa these swales tend to flatten out and form small, natural sediment basins just before it reaches the mesa pouroff. <br />Currently, very little water flows off of the mesa top as evidenced by the rather poorly defined pouroffs that show <br />little of the deep cutting that is customarily seen on mesa pouroffs in more arid lands. Thus, natural sediment <br />control seems to be in place and is effective. <br />Of course, one would conclude that with mining the volume of water being discharged Erom these pouroffs <br />will increase as a result of denuded land uphill from the discharge points. However, the direction of mining in Area <br />C will be from north to south. Therefore, water Elow from mined areas and areas being reclaimed behind the <br />working face will be confined by the working face itself. As a result, during the mining the amount of water reaching <br />the pouroffs may actually decline somewhat because the effective watershed area will become smaller. In actual Eact, <br />little of the water that currently falls on the northern parts of the mesa where mining will begin evet makes it to the <br />pouroffs due to absorption into the existing soils and consumption by the existing vegetation. A vast majority of the <br />water leaving the mesa is derived kom precipitation falling on land a short distance north of the southern edge of <br />the mesa. <br />As the operation nears the southern edge of the mesa, the mining will become more and more shallow <br />allowing more water to leave the mining area and lands in reclamation. At this point the large but shallow depression <br />shown on the maps and discussed in the plan will be created near the southern tip of this part of the mesa. This will <br />become the only "constructed" sediment basin within Axea C. Until that time, little if any discharge from the mining <br />areas will occur and therefore the existing small depressions upgxadient from the pouroffs will function as they have <br />in the past with similar volumes of water. <br />In summary, Areas A and B will have discharge controlled near the plant as is currently done. In Area C, little <br />iE any discharge from the mining area will occur until near the end of the mining of that area. At that time, a <br />discharge and sediment basin will be constructed and that is shown on the map and discussed in the plan. <br />Proof of Publication and Return Receipts of Notifications: Also included in this submission is the original <br />proof of publication from the Canon City Daily Record and copies of the return receipts Erom the mailings to the <br />landowners and adjacent land owners. <br />If you have any questions regarding this submission, please call. <br />Sincerely, <br />`~~~ , <br />Mark A. Heffner <br />cc: B.J. Fuller, Castle Concrete Company <br />
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