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\ ~ • :~ • III III III III IIII III 999 ~~:1).i~),~1'l.I; ~~.~.O4Dl:,ti; ~~~(D.~:~YI'.11;'1i; E Srge liSH[D IBT3 October 14, 1982 Mr. Robert Liddle Colorado Mined Land Reclamation Division 423 Centennial P,uilding 1313 Sherman Street Denver, Colorado 80203 Re: CO-028-81 Dear h1r. Liddle: Stipulation PIo. 14 to our Permit concern distribution lines to minimize the danger of The two basic potaer line types used by Coors Keenesburg Mine are shown in our Application, These lines were designed in 1980 and erected Raptor Research Foundation publications v+ere and we feel that both designs are essentially guidelines. PAIhJFU L~,fuU FECIl,I;~i~tTION Cr,lo Dr.pt. of P;ahnal Rssoorces s design of electrical electrocution to rapto r,. Energy Co~~pany at its Appendix P-1 and P-~ in 1981. The P.EA and referred to at that time, in cnn`ormance with the Specifically, the ground wire in both designs, rather than one of the phase wires, is carried at the top of the pole ~.~here the raptor would naturally land. In addition, adequate ground/phase wire separa- tion is maintained and all pole grounding wires are insulated, thereby all but eliminating an electrocution hazard in the desirable perch area. The power line with cross arm design is used only to feed the dragline and will be relocated two dines as operations progress from Pit "A" through Pit "8" and Pit "C". Although the distance hr_tween the two phase conductors on the same side of the r.nnter pole is less than desirable, we feel the problem is ininimize;l by locating the rro5s arm 5'6" below the ground conductor and top of the pole. (The approved guidelines recommend a minimum separation of .13". See attached Fig- ure 7 from the Raptor Pe search Fo~rndation publication.)