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<br />AE <br />~~. <br />M <br />~+ ~s <br />a ,_.¢K[ <br />~v A <br />I- ~ _ <br />~, o, sox .a <br />n.Maow. xsarruat* n~~i <br />eca~~si•nao <br />-wscesx~wu c~onawwa <br />fit; il~ <br />April Z8, 1984 <br />999 -_ - A~':~.~u,- ~ ~ S,r '.,,, = <br />~~ a <br />~~ ~ds <br />~ 1t~.};b <br />AMERICAN ENGINF,ERS, INC_ <br />Mr. Mike Savage <br />Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />RECEIVED <br />SAY a ~ ~sa4 <br />MINED UND RECtAMA110N DtYlSION <br />CMo. Dern• of Natural Netaurrea <br />RE: Trinidad Basin Mining <br />Dear Mike: <br />After reviewing our certification files for silt <br />structures for Trinidad Basin Mining, we find we have <br />no certifications in our files for the older structures <br />previously constructed under the original permit. We <br />would like for you to submit, to this office, certifications <br />previously done by others on these ponds. <br />tt-S have been in the. process of tabulating any and <br />all certifications for Triniad Basin Mining and in so <br />doing we inadvertantly certified five !5) ponds.-having a <br />different principal spillway configuration thai{was <br />originally designed. <br />We are therefore submitting, for your files, new <br />certifications for these five (5) structures along with <br />computor printouts for these new principal spillway designs <br />and request that a revision be made thereof. <br />a^ <br /> <br /> <br />Mike, we will also be submitting to you, the same <br />spillway configuration change for the ponds not completed <br />at this time. <br />