My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2008-07-30_REVISION - M1987038
DRMS
>
Day Forward
>
Revision
>
Minerals
>
M1987038
>
2008-07-30_REVISION - M1987038
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
6/15/2021 5:45:56 PM
Creation date
8/14/2008 4:04:16 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1987038
IBM Index Class Name
REVISION
Doc Date
7/30/2008
Doc Name
Witness & Exhibit list
From
Oldcastle SW Group dba Four Corners
To
DRMS
Type & Sequence
AM5
Email Name
KAP
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
130
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
0 0 <br />Depth of Pond <br />The depth of water in the pond will be directly related to ground <br />water fluctuations unless water quality is enhanced by other <br />sources. Pond basins should be deep enough to provide year- <br />round aquatic habitat. This is currently the case in Phase <br />1. This pond is deep enough in areas to prevent fish mortality <br />from low dissolved oxygerr and accumulation of metabolites during <br />summer and winter stratification. Its habitat is enhanced by <br />the continual flow through the pond of groundwater and runoff. <br />Shallow water areas of less that two meters deep usually support <br />emergent and subemergent aquatic plants that provide food and <br />cover for fish and wildlife species. These shallow productive <br />zones should make up 20 percent of the surface area of the pond. <br />The existing pond is probably approaching that percent due to <br />the shelving of the gravel deposits throughout the lake, <br />especially at the north end, that prevented deeper maximum <br />mining. <br />It is recommended that some areas of the shoreline drop off <br />rapidly to keep a portion of the shoreline free of vegetation <br />for species requiring deeper, open water. Additionally, a good <br />distribution of vegetation patches can be attained by creating <br />an uneven and rolling bottom where shallow areas are mixed with <br />deeper open water sites. We are under certain restrictions <br />from the Colorado Division of Minerals and Geology as to <br />shoreline slope into the water. We plan to create the mixed <br />slope and uneven depths in places where possible at time of <br />final reclamation and feel that some of these areas already <br />exist. <br />Shoreline Configuration and Slope <br />In general, waterfowl require a greater ratio of land/water <br />edge. An undulating shoreline, with points, coves, and bays <br />provides more land or water edge. Islands can provide suitable <br />nesting sites for ducks and geese than do the uplands adjacent <br />to the pond as they are typically free of predators. <br />We are committed to slope the edge of the ponds to at least <br />a 2:1 (horizontal to vertical) slope above water and a 3:1 <br />-I-io1%$---fa=- -57-1-0-1- -uu de=water. AT-though- some animals will not <br />use sites when the banks are too high, steep slopes do provide <br />burrow sites for bank-nesting birds and mammals such as belted <br />kingfishers and swallows. We are committed to varying the slope <br />within our safety and mining permit limits, undulating the <br />shoreline where possible. We will create some 4:1 and 5:1 <br />slopes, particularly at the north end of the existing pond. <br />Pond Substrate and Structure <br />Many aquatic organisms have specific substrate requirements <br />for reproduction or cover. For example, crayfish either require <br />material in which to dig burrows or need rocky areas with <br />abundant spaces for shelter. A variety of sizes and bottom <br />materials (from sand to large cobbles and small boulders) should <br />Hearing on Permit No. M-1987-038 <br />Bayfield Pit No. 1
The URL can be used to link to this page
Your browser does not support the video tag.