Laserfiche WebLink
be contemplated for the site, the safety factor would be in <br />ezceas o! the required 1.5. Additionally, the previous <br />CI;:> <br />' operator committed to test the coal processing waste produced <br />from the Raton Creek Mine and analyze it to determine the <br />actusl physical properties o! the refuse material and modify <br />the embaal®ent design, if required. <br />1983 Revised Deeian <br />In 1983. the previous operator of the Raton Creek Mine Complex <br />submitted a technical revision revising the design of the refuse <br />disposal site to provide additional capacity. This design, which <br />included actual physical properties of the refuse material <br />obtained from tenting during the early stages of production at <br />the mine site, wan approved by the Division with stipulations is <br />late-1983. Following is a summary of the revised design: <br />1. Size and Conl1¢uratioa: The revised reiuae disposal area <br />covered a total of 29.8 acres and contemplated a maximum <br />f•:~- embaaloneat height of 320 lest. As with the initial design, <br />the revised design included 20-toot wide terraces spaced 50 <br />feet vertically. The slopes between terraces were deelgaed <br />at 1.7 horizontal to 1 vertical, resulting in as overall <br />embanl~ent elope of 2 horizontal to 1 vertical. <br />2. Drainage: The drainage control plan presented in the revised <br />design included ~ diversion, sediment collection, under <br />drainage and monitoring identical to that presented and <br />approved is the initisl design. The only difterences <br />associated with the modified reiuae disposal plan involved <br />redesign sad relocation of ditches to accommodate the revised <br />pile size. <br />3. Construction: The construction plans for the revised refuse <br />disposal area design are identical to those included in the <br />initial design. <br />464 <br />'Revised 5/93 <br />