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__ ~ - <br />' ~ ~`Y~ x.. .. _. <br />.... .. <br />_ ~ et , ~ ~ . <br />AMERICAN ENGINEERS, INC. <br />.. o..~ IY! _: .~or~s.loww uaoalme+o <br />OU18001N. ItOi711G111' N141 <br />tWll{6t~77tp <br />April 28, 1984 <br />Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />RE: Trinidad Basin Mining <br />MLR C-048-81 <br />ATTN: Mike Savage: <br />Gentlemen: <br />We hereby re-certify Sediment Pond 15-P9 which was <br />inadvertantly certified with a different principal and <br />emergency spillway configuration than [hat which was <br />designed. <br />This structure appeared to be somewhat smaller than <br />the design, however with proper= cleanout and maintenance <br />by the operator it should not adversely affect the operation. <br />The use of contemporaneous reclamation practice in the <br />area above this structure will reduce the amount of runoff <br />volume. <br />The location is as shown on the Sediment Control <br />Map as originally submitted. <br />Yours very truly, <br />ENGII~ER~, INC. <br />dent <br />P.E. <br />BTU/dn <br />