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Mr. Mark S. Loye <br />October 19, 1984 <br />Page -2- <br />3. Compaction of rock fill <br />HMC will install a line of stakes along a lower bench of the North <br />Dump fill to allow visual sighting of the effects of compaction. <br />The stakes will be installed as soon as materials, equipment, and <br />personnel allow. The line of stakes will be periodically observed <br />and the results recorded for annual reporting (until such monitoring <br />no longer provides useful data). <br />4. P1aas of reclamation demonstration areas <br />S <br />HMC is providing, as Attachment II, a map showing the location of these <br />areas graded and seeded in October of this year. These areas provide <br />the steeper slopes and longer runs discussed with the Oivision as <br />appropriate for demonstrating HMC's plans for revegetation. We were <br />able to complete the necessary grading of the southwestern portion of <br />the area and, therefore, do not have additional areas awaiting final <br />grading and seeding as was anticipated during our earlier discussions. <br />Since it is our intention to proceed with additional reclamation when <br />weather permits next year, it will be appropriate to submit an update <br />to this map once the revegetation is completed next year. We plan to <br />produce a more precise topographic map of the area located on the <br />attachment, as well as those areas graded next year, as a base map <br />for the next submission. <br />For purpose of ease of reference, we are also enclosing a full-scale <br />copy of the annual topographic map for the area. This serves as a <br />base map for the two attachments drawn at reduced scale. <br />I believe this covers the points of discussions and agreement. I hope <br />it is useful to note that we seeded, fertilized, and mulched the demonstration <br />area. On approximately one-half acre of the out-slope we utilized a seed <br />mixture provided by the Upper Colorado Environmental Plant Center. That <br />mixture is described on Attachment III. The area so planted is located <br />on a 100 foot-long slope approaching 2:1, and is located adjacent to the <br />existing, seeded 2:1 slope inspected previously by Division personnel. In <br />accord with the Plant Center's advice, this mix was the only material used; <br />that is, it was not combined with the Alpine Mix used elsewhere. We trust <br />that the mix meets with your approval since it was comprised of species <br />previously described to Division staff. The attachment reports the types, <br />varieties, weights, purities, germination rates, and sources wherever we <br />were provided the information. <br />There is one additional item, that of location of precipitation gauges, <br />which we would like very much to adjust, if you believe you could advise <br />us that adjustment was acceptable. There has been an informal discussion <br />regarding locations in the past, We now have two precipitation gauges <br />We would like to discontinue the measurements at Hale Gulch since no activities <br />are planned there. The second gauge, originally located at the proposed <br />tailings site, has been moved to the North Dump, near the mine office. The <br />relocation was discussed briefly with the Division. Its relocation makes <br />