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APPCOR11783
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Last modified
8/24/2016 6:32:06 PM
Creation date
11/19/2007 2:24:13 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981038
IBM Index Class Name
Application Correspondence
Doc Name
RESPONCE TO EPA COMMENTS & REQUESTS FOR INFORMATION ORCHARD VLY MINE
From
COLO WESTMORELAND INC
To
AREA MINING SUPERVISOR & ENVIRONMENTAL PROTECTION AGENCY
Media Type
D
Archive
No
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i ~ <br />• • <br />(5) <br />in 1976. Reclamation and revegetation efforts were initiate i in <br />the summer of 1977. Unfortunately, a nnjor storm washed awa~ some <br />of the seeded areas in the early Eall. These areas were revggetated <br />during the late fall at considerable expense to CWI. These ~fforts <br />will be renewed by CWI's consultant when the spring thaw mak~s a <br />revegetation effort possible. Parenthetically, our consultant, <br />who has a proven track record in the field, believes that CW 's <br />efforts are exemplary. He wants to have the Environmental P~.ant <br />Center at Meeker (SCS) use CW7's mine as a field test site f~r <br />reclamation and revegetation techniques. <br />The last EPA criticism dealt with our failure to speci <br />a reference method that could he used to measure revegetatiop success. <br />Our consultant has informed us that there is no standard method <br />for assessing revegetation success presently in use by the t~lechnical <br />community. If EPA would like to specify a standard method, CWI <br />will have its consultant consider it. CWI will use a recog~nized* <br />"line-transect~~ method to determine that the percent of cov~~er of <br />the revegetated slopes are equal to or greater than that of t he <br />surrounding area. As discussed earlier, our reclamation and revegetation <br />program is thoroughly treated in the mining plan. Some additional <br />i <br />detail on the final revegetation program is also supplied in this <br />memorandum under the treatment of No. V "Stability of Post Mining <br />Slopes" <br />*One example of a recognized line-transect method is thlat <br />described in "Range Research - Basic Problems and Techniques", <br />1962, National Academy of Sciences/National Research Council, <br />Publication 980. <br />i <br />,. i li~ ~ h~ l-d l~l ~~l~i a ~~~1 ~~~.~ ~i .. <br />
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