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<br />Page 2 <br />Dan Mathews <br />May 14, 1987 <br /> <br />Concerning both nitrogen and phosphorus requirements based on chemical <br />tests, some field work has been completed to correlate fertilization <br />application with growth response; however, the calibration is not complete. <br />Furthermore, as indicated by R. Jump, desired phosphorus levels are not well <br />documented because soil material variability affects availability of <br />phosphorus. <br />Colorado Yampa Coal Company has evaluated cover data (collected in <br />1985) for areas containing respread topsoil which was stockpiled for two, <br />three and six years. As indicated on the following Table 1, the relative <br />percentage of cover of perennial grasses, perennial fortis and shrubs, and <br />annuals is similar for all areas reviewed. For the given areas, the average <br />relative cover of annuals is 46.6% (2 year stockpile), 41.0% (3 year <br />stockpile), and 45.9% (6 year stockpile). When these values are compared <br />with another area where reclamation is progressing, it is not unreasonable <br />to expect these areas will progress toward successful reclamation as well. <br />Table 2, Relative Cover for Area 9/10 - 9/81 - 22.4AC depicts the trend for <br />the reclaimed parcels at CYCC. In 1983, the percentage of annual plants was <br />80.6%; by 1985, that amount decreased to I9.0%. <br />In summary, CYCC proposes to monitor the reclamation and use the <br />results of the monitoring program to evaluate the need for fertilizer <br />amendments. Page 780-138 of Permit C-81-071 has been revised to reflect <br />this modification. <br />CYCC will file for public inspection a copy of this application as <br />required by Rule 2.08.4 (5)(B)(i) in the following public office upon <br />notification from the Division that this application for a technical <br />revision is complete: <br />Office of the Clerk and Recorder <br />Routt County, Colorado <br />P.O. Box 773598 <br />Steamboat Springs, CO 80477 <br />Upon notification from the Division that this <br />revision is complete, an advertisement in a local <br />pursuant to the requirements of Rule 2.07.3 (2). <br />publication is attached. This notice will be <br />required by Rule 2.08.4(5)(b)(i) and proof of publ <br />with the Division. <br />Sincerely, <br />` ~. <br />Terrell K. Johnson <br />Environmental Specialist <br />TKJ/cl <br />application for technical <br />newspaper will be placed <br />The proposed notice of <br />published only once as <br />ication will then be filed <br />Attachments <br />