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~E <br />-. O. FOR 1 Y1 <br />GLA900M. RWTLCK'I 1211 <br />OW/661~7t30 <br />i~ <br />u <br /> <br />AMERICAN ENGINEERS, INC. <br />-1~-a..lalw (NOW[.AIMO <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-P11 which was <br />inadvertantly certified with a different principal and <br />emergency spillway configuration than that which was 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 location is as shown on the revised Sediment <br />Control Map previously submitted. <br />Yours very truly, <br />ENGINEE~JINC. <br />nt <br />P.E. <br />BTQ/dn <br />