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-12- <br /> The one site that might meet the eligibility requirements of the National <br /> Register of Historic Places is the old Coal Basin townsite. Accordingly, <br /> Mid-Continent engaged the consulting firm of Powers Elevation to conduct <br /> an initial survey and recording of the Coal Basin townsite. That firm <br /> concluded that the Coal Basin townsite may meet the eligibility <br /> requirements of the National Register of Historic Places. <br /> A portion of the Coal Basin townsite was destroyed when the Coal Basin <br /> mine was reopened in 1974. However, there are no plans to disturb the <br /> remaining portions of the Coal Basin townsite and the townsite will not <br /> De undermined. Therefore, the proposed operation should not have an <br /> �1 adverse effect on the townsite. <br /> 1"e <br /> ti Cultural Resources surveys have been performed for areas of surface <br /> pS disturbance during the past few years. Those conducted in areas of the <br /> x rock tunnel construction and exploration light use roads have located no <br /> �\ �L evidence of archaeological sites. (See Appendices III-E3-3, 4, and 5)lei y, <br /> Very little additional surface disturbance will be necessary in the Coal <br /> Basin mine plan area over the planned life of the mi-ne. Cultural yer6 <br /> resource surveys will be performed before any further surface disturbance t lc 0 <br /> is approved. <br /> Pursuant to Rljle 2.07.6(2) (e) , the Division finds that toe proposed <br /> mining operation will not adversely affect any publicly owned park or <br /> place listed on the National Register of Historic Places. <br /> The proposed operation is in compliance with the requirements of this <br /> section. <br /> IV. Geology - Rules 2.04.5 and 2.04.6 <br /> The Coal 3asin mines are located on the southeast edge of the Piceance <br /> Basin within the Coal Basin. The Coal Basin is an eroded anticline <br /> superimposed on the Grand Hogback �•lonocline. The strata of Coal Basin <br /> consist principally of the Cretaceous iviancos shale and Mesaverde Group, <br /> although rocks varying in age from Pennsylvanian to Tertiary are present. <br /> The Mancos shale, which consists of silty shale to shaley siltstone, <br /> makes up toe vast majority of the Floor )f Coal 3as i n. Below the Mancos <br /> shale, bedrock units are the Cretaceous Dakota, Jurassic iflorrison and <br /> jur.assic Entr-ida sandstones, Permian '.deber sandstone, and <br /> Pe rho-Pennsylvania •laroon formations. These bedrock Units outcroo on the <br /> Grand Hogback, then dip steeply beneath the overlying Coal 3asin strata. <br /> They occur far beneath, and ,ire unaffected by, .mining activity. <br /> The overlying '•lesaverde Group consist, vainly of scale beds interspersed <br /> with sandstone units. <br /> The 'Iesaverde Group is custoinarily escri!),,,i in .z2rms a lower <br /> f,rnation, called the Iles, and an upper for "Ition, called the ,lil ', in,is <br /> `7Jr'nati 1 <br /> On 0`i?r i?S as 'tOt?'� �nP <br /> ;Jl I ] „an13 "ti i')rnac inn ov:r� ies -.1? :" '_s. ' ' <br />