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~J <br />_ Bi0.5Y5TEM5 <br />. RESEARCH <br />Robert f,. ..^,iglow <br />diglow Land Survey Co <br />234 E St. <br />Salida, CO 81271 <br />Dear I?r. 9i01o1v: <br />• ~IIII~'I~II~~~~~III <br />999 <br />DRAWER 1037 SALIDA, COLORADO 81201 <br />TELEPHONE 303 539-3531 <br />December 21, 1773 <br />He r2 are my recommendations concerning the question asked in <br />Ex~ibit E of Mr. I.oye's letter: <br />2. 4s ,/ou knoly, the final height of file highlvall in Zone 2 <br />will be approximately 50 bo 77 feet ;iinh. This will be an almost <br />vertical wall of very stable mineral material that will not require <br />stabilization. <br />3. 3ecause of tale depth of the top soil in the new areas to be <br />• opened, there will be sufficient top soil for all areas both old <br />and new - to be covered to a depth of 6 to 8 inc:7es ~,vllicll js suf- <br />ficient. <br />4. Tile plant species in the seed application list should Ile <br />the ones used to revegetate the area, with two changes. I recom- <br />mend t:~at Crested vl:~eat Grass be substituted for Needle and Thread <br />Grass at a rate of E lbs/acre. Smooth 8rome s:lould not be used at <br />all and :lestern llheat Grass s:~ould not be suhstituted for. <br />5. I believe t;~at the proposed seed mix will suffice for all <br />slopes since we have included species at least somew:lat adapted <br />to the drier, steeper slopes. <br />6. If, at the end of t~vo gro~:ling seasons, you do not have <br />at least 20 pifion and /or juniper seedlings establis`led/acre, then <br />you should plan to plant enough potted pi4fon and juniper (a mix <br />would be best - pifion on t~~e better sites and juniper on tie more <br />rigorous sites) seedlings to brin7 the count of establis:led plants <br />to 27/acre. <br />I hope this will be satisfactory. I think the above recommenda- <br />tions are both reasonable and yet sufficient. <br />Since 1~ yours, <br />• • ~ ~1A1'~..~ <br />.E. Owen, Ph.D. Plant Ecology <br />Director for Scientific Liaison <br />