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REV106255
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REV106255
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Entry Properties
Last modified
8/25/2016 1:20:56 AM
Creation date
11/22/2007 1:33:17 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981013
IBM Index Class Name
Revision
Doc Date
1/7/1999
Doc Name
REQUEST FOR AVS CHECKS
Type & Sequence
RN3
Media Type
D
Archive
No
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t Basin proposes to reclaim the Golden Eagle Mine disturbed areas to pastureland and non- <br />irrigated rangeland. The grassland reference area will be used and evaluated for non- <br />irrigated rangeland and an AVF reference area, to be located east of pond Sat the time of <br />reclamation, will be used and evaluated for pastureland, both irrigated and dryland, <br />according to the requirements of 4.15.8, as per the following criteria: <br />Herbaceous cover shall be at least 90 percent of the cover as determined from the <br />Golden Eagle grassland reference area with 90% statistical confidence. <br />2. Herbaceous productivity shall be at least 90% of the productivity as determined from <br />the Golden Eagle grassland reference azea with 90% statistical confidence. <br />3. Species diversity will be deemed adequate when the reclaimed lands consist of a <br />minimum of two cool season grasses, two warm season grasses, and one forb. Theses <br />species shall each comprise at least five percent and no more than sixty percent <br />relative cover, and shall consist of perennial non-noxious species. This criteria shall <br />not apply to areas seeded with the pastureland seed mix. <br />Shrub density will not be used to evaluate revegetation success since the post-mining <br />land use is rangeland. Rather, the shrub component will comprise up to 5% of the species <br />composition or 2 to 4 shrubs per meter squazed. This is based on reevaluating data in <br />Exhibit 13, Appendix C. Fringed sage is the only valuable shrub encountered. The mean <br />-•,^4 and standazd error for fringed sage density is 3.1 and .94, respectively. The confidence <br />-"" interval surrounding the mean at 0.20 level of probability with 34 degrees of freedom is <br />3.1 +/- 0.94 stems or 2.16 to 4.00 stems per meter squazed. <br />Reclamation of sediment pond 003 and 005 will be accomplished by seeding 4 pounds <br />PLS of alfalfa and 12 pounds of PLS of brome per acre. This mix is currently being used <br />by the Lessor. Basin will submit production data for the adjacent hayland to the Division <br />in conjunction with the vegetation-monitoring plan. This data will be used to evaluate <br />the revegetative success of the pastureland revegetation areas. <br />During application and placement of the soil material to the regraded surface, particular <br />care will be taken to ensure that the soil material is suitable for use as a plant growth <br />medium. Testing of the soil material after placement will be completed to determine the <br />level of nutrients present in the soil-and to specifically determine the required fertilization <br />rates. Atypical suite of soil parameters as recommended by the Department of Range <br />Science or equivalent agency will 1?e utilized to determine the suitability of the topsoil <br />material. Following determination of the topsoil suitability, the appropriate fertilization <br />rates will be approved by tfie Division and utilized to enhance the revegetation potential <br />of the disturbed area. <br />?.05-26 (Revised 9/225/9= TR~Oj <br />
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