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2017-01-20_REVISION - C2009087
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2017-01-20_REVISION - C2009087
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Last modified
1/23/2017 8:55:53 AM
Creation date
1/23/2017 7:55:37 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C2009087
IBM Index Class Name
Revision
Doc Date
1/20/2017
Doc Name
Application
From
Peabody Sage Creek Mining, LLC
To
DRMS
Type & Sequence
SL4
Email Name
TNL
DIH
Media Type
D
Archive
No
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Noxious weed production was not collected, however the introduced annual grass cheatgrass and <br />introduced perennial grass bulbous bluegrass were deducted to account for the C -list noxious <br />weed species. <br />While the 2012 BRB PSCM-2 allowable herbaceous production exceeded 90 percent of the <br />production performance standard, sample adequacy was not demonstrated with a minimum of 30 <br />samples taken in either the reclaimed or the reference areas. Therefore reclamation success for <br />Phase III 2012 herbaceous production is demonstrated by passing a one -sample t-test of the <br />Reverse Null Hypothesis (CDMG 2005 proposed rules revisions 4.15.1 (2)(c)). The BRB PSCM- <br />2 production data were first evaluated for normality using the Shapiro-Francia test. Based on the <br />BRB PSCM-2 production data the normality test was not passed. Consequently a square root <br />transformation was performed and the normality test was passed. Calculations were undertaken <br />using square root transformed data for both the BRB PSCM-2 production data and the <br />production technical standard. Please refer to pages 19 and 20 and Table 1 in the vegetation <br />success evaluation report contained in Attachment D for details and discussion. <br />A reverse -null t-test asserting that the 2012 BRB PSCM-2 allowable herbaceous production <br />exceeds the Weighted Reference Area allowable herbaceous production performance standard is <br />as follows (data are square roots of oven -dry gm/0.5square meter data for both the BRB PSCM-2 <br />production data and the production technical standard): <br />t GaiC = x—(0.9=tech nical stmidard) <br />s <br />6.473 — 3.221 <br />tca[c = (., 35 J.41\ = 7.984 <br />c ` <br />Since critical table = 0.852 (one -tailed, alpha = 0.2, 35-1 df) is exceeded by tc�lc (7.984), the <br />hypothesis of no difference is rejected and reclamation success for BRB PSCM-2 production <br />under Phase III is demonstrated in 2012. <br />2014 Herbaceous Production Success Evaluation <br />
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