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REV11054
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Entry Properties
Last modified
8/25/2016 1:22:02 AM
Creation date
11/21/2007 10:19:28 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M2001060
IBM Index Class Name
Revision
Doc Date
5/11/2006
Doc Name
Wetland delineation report for Stipulation #3
From
3-B Enterprises and IME
To
DMG and COE
Media Type
D
Archive
No
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were flooded or possessed an elevated groundwater table close enough to the surface to saturate <br />the major portion of the rooting zone or the upper most foot of topsoil during the growing <br />season. Four of these five plots which were dominated by wetland vegetation where Foxtail <br />Bazley (FACW) as the dominant species. The other plot was dominated by Baltic Rush (FACW) <br />and Foxtail Bazley (FACW) was a subdominant species. Unfortunately, both of these species as <br />we have been informed by Mr. Ken Jacobson, in previous inspections (most recently in June of <br />2004 during the inspection of Stagecoach Reservoir) are very poor indicators and probably <br />should not even be considered as wetland indicator species. Foxtail Barley (FACW) is notorious <br />as a weedy invasive species, more indicative of disturbance than as a reliable wetland indicator. <br />Baltic Rush (FACW) has similaz limitations. Adjacent to this site, it is the dominant species in <br />places growing on the railroad bed embankment, approximately 4 to 5 feet above the current <br />level of the undisturbed ground and under conditions that would never possess an elevated <br />groundwater table or would ever be flooded. Excluding these two species would result in neazly <br />all of these plots being dominated by upland vegetation and hence would not be considered to be <br />wetlands. <br />Total acreage of the project site. <br />Respo°se: The area evaluated in this wetland delineation corresponds to the area to the west of <br />the currently staked Colorado Division of Minerals and Geology Mine Permit Boundary. This <br />area extends south and westward from the existing mine disturbance area to First Street and the <br />property fence line on the west and the property boundary fence line on the south. The area <br />evaluated in this wetland delineation effort was 406,048 SF or 9.3216 acres. <br />Existing field conditions such as the season and flood/drought conditions. <br />Response: At the time of the initial field inspection on 5 March 2005 the site was mostly free of <br />snow, but in places there was 3-4 inches of snow present on the site. Atl of the lower elevational <br />and depressional areas contained several inches of frozen ice, making it impossible to see the <br />vegetation underneath the snow and ice. When examined the site a second time on 5 April 2006, <br />the snow and ice had completely melted and the wetland boundary staking was completed. <br />When the site was last examined on 18 Apri12005, the site was covered with approximately 4-5 <br />inches of snow that fell the night before and which was rapidly melting. Within, three to four <br />hours, all of the snow had melted and the site was very wet and muddy. During the last three <br />times we traveled to the site, the Yampa River just upstream was flowing beyond its banks and <br />in places was nearly one half mile wide. During this period the site was not yet in the defined <br />growing season as evidenced by the soil temperature data collected on 18 August 2006, which is <br />found in each respective field data sheet, but it is felt that this evaluafion occurred during the <br />wettest period of the yeaz. <br />A discussion of the hydrology source (subsurface or surface, including potential irrigation <br />influence) and drainage gradients. <br />Response: As mentioned in the previous discussion on the wetland types, the site is dominated <br />by two hydrological sources. The most pronounced hydrological feature on this site is that of <br />surface water which collects in the depressional areas of the site. The second and apparently <br />most pronounced hydrological influence on this immediate site deals with the historic mine <br />dischazge waters which were pumped from the current mine pits almost continuously in 2003 <br />and during most of 2004 and released on the site in the form of irrigation on this site. All of the <br />surface waters appear to exit the property by entering the Jones Slough, which appear to be <br />totally dischazged into the Yampa and M Ditches and it is unknown whether or not any of these <br />waters return to the Yampa River. It is unknown what influence if any the Yampa River has on <br />
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