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INSPEC16603
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INSPEC16603
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Last modified
8/24/2016 9:17:57 PM
Creation date
11/18/2007 9:16:58 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980002
IBM Index Class Name
Inspection
Doc Name
Inspection Report
Inspection Date
5/18/2006
Media Type
D
Archive
No
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<br />III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made <br />during the inspection. Comments also describe any enforcement actions taken during the inspection <br />and the facts or evidence supporting the enforcement action. <br />This was a complete inspection of the OC #2 Mine conducted by Dan Mathews of CDMG. Weather was partly cloudy, <br />warm and dry. The site was snow free and surface soils were dry, The primary focus of the inspection was to assess the <br />status of fencing at the site. CDMG is contemplating interseeding at the site to enhance vegetative success; livestock <br />exclusion may be critical to vegetative stand improvement and success of any interseeding effort. <br />Roads: The remaining permanent road segment was stable, with no rills or signs of recent use. <br />Hydrologic Balance: The sediment pond contained no water; small mud puddle in deepest part <br />Backfilling and Grading: The reclaimed porta]/backfilled slope area appeared stable with no excessive erosion. <br />Revegetation/Reclamation Success: Vegetation sampling was conducted by the Division in June 2005. Sampling <br />indicated that the diversity standard had been achieved; the cover standard was not achieved {sample mean of 31.1% vs. <br />standard of 40.5%). The production sample mean (134 g/sq.m) exceeded the standard (13 ].I g/sq. m), however sample <br />adequacy was not achieved due to high variability (data skewed by a few very high production quadrats in the soil stockpile <br />area). The noxious weed Canada thistle was present in the northeast portion of the reclaimed slope and a dense patch was <br />encountered on one transect (1.5% relative cover). Based on the sample results, the Division concluded that: <br />Athough cover is low on the slope area, there are a relatively high number of species. With proper grazing <br />management (difficult on such a small site) or livestock exclusion, and control ojCanada thistle, cover ofgrasses <br />would be expected to increase. Otherwise, low palability weedy species, expecially the noxious Canada thistle <br />may increase on the site, given the extent of bare soil. /nterseeding of the slope area, combined with grazing <br />protection, would likely accelerate the establishment of a more effective cover of desirable species. <br />A[ the time of this inspection, overall condition of the vegetative stand is as documented last year (although cover and <br />production is lower due to the early stage of the growing season). There were no livestock on site and no indication of <br />livestock grazing so far this year. There was evidence of recent elk grazing; notably the alk appear to have preferentially <br />grazed the orchard grass plants. Site conditions appear to be dry for so early in the growing season; likely due to warm, dry <br />conditions during April and May. <br />Support Facilities: Four strand barbed wire fencing in is place, completely encircling the reclaimed slope area. However, <br />the fence is in a poor state of repair. In several locations, wooden gate posts, comer posts, and brace posts are rotted and <br />have fallen, and as a result the fence is down in these locations and no longer functional. In other locations wire is loose <br />and in one spot gully erosion has resulted in excess space (2'+) between the bottom wire and the ground. Maintenance <br />including replacement of corner posts, brace posts, gate posts, etc, will be necessary to repair the fence to a sound condition. <br />Fence repair will allow livestock to be excluded for a period of time as necessary to establish a satisfactory cover of <br />desirable vegetation on the slope. <br />The Gunnison County Weed Commission has been contacted to spray the Canada thistle infestation later in the growing <br />season. The ranch manager for the landowner (Castleton Ranch) will be contacted to discuss fencing repairs/livestock <br />management, and tentative plans for an interseeding project. <br />
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