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~ i MEMO KEITH KIRK, MIKE MCCARTHY DECEMBER 26, 1979 PAGE -3- 7) The areas to receive the topsoil/wood chip mulch should be clearl identified on the soil redistribution map or another map, VFW y~/Gri 8) It is not clear in which areas stone mulch will be applied to the soil surface to assure effective protection of soil and vegetation. Also, areas receiving chemical soil stabilizers should be clearly identified. 9) In regards to reference areas, it is not clear how some of the reference areas will be managed exactly as if the land were still in its post- mining condition. For example, the two reference areas in section 17, T4N, R86W will be very inacessible. To grazing by cattle or sheep. Also, the reference area in section 18, T4N, R86W appears to be within an active mining area. Please clarify, 10) The applicant should indicate the sampling frequency for the identification of vegetation, soil and water conditions during the liability period.. 3) Soils Information a) There are incongruites within the topsoil volume tables and redistribution maps, For example, the volumes of topsoil to be removed for year 1981 do agree in tables 94,95 and map 1142. b) Further clarification of the subsoil salvage plan is needed. From what areas and what amounts of subsoil will be salvaged for redistribution. This can be handled in the form of a table. c) The nat~'v~€ of the material to be in the t/s stockpile is not clear. A futther discussion on the source, handling and redistribution of this material would be beneficial. 4) Operation Plan a) Section 780 1) On page 780-2 reference is made to use of the Hydro- Axe in wooded areas to produce a wood chip mulch. The 500 series has proved not to be adequate for the EFC site, therefore, a statement addressing this inadequacy should be incorporated along with any additional information on the use of a larger Hydro-Axe at the site. A mulching contigency plan should also be given if the Hydro-Axe is not to be employed at the site. c~~~ 2) It is notihow long redistributed topsoil will remain in place before it is seeded. In view of the fact that topsoil removal will be occurring during the winter months when Eckman Park is first opened up, the appli- cant should give a more detailed topsoil salvage for these months and then a topsoil salvage plan that will be used after this period. Refer to page 780-3. 3) Refer to page 780-6. The applicant should submit spoil volume calculations to substantiate that excesses-oil will pe genQrated by the operation. JA 1W rsN P.. ..y ?!~'~"J~~.~r/j .7 /~: /.. !lt ..9. >1.. r../~ rar:.... ~:'.-~-• ~. ~• 4) Refer to 780-7. The applicant should indicate what haul road will be used to transport spoil material from the southern box cut to the overburden stockpile 112. (cont'dl