Laserfiche WebLink
<br /> <br />HI;Y;L,MIATION Top SOIL <br />Based on the data provided by the Soil (bnservation Service in <br />their mapping unit descriptions and soil survey interpretations (Table <br />1), the determination of suitability was Wade for each napping unit. <br />The soun:e of criteria for evaluating topsoil suitability were Soil <br />Uonservation Service guidelines (National Soils Handbook 1978) and <br />Wyoming Department of Cuvirorunental Quality (WDEQ) 6videlines (WDFJa <br />Guildeline No. a, 1976). An average of 6 inches of soil suitable for <br />stockpiling is available over the undisturi~ed portion of the mine plan <br />area (approximately 15U acres); however, this evaluation is subject to <br />vas•iations in slope and particle size distribution. <br />Some of the soils comprising the Lazear-Rock complex are too <br />poox• sources of topsoil in areas where slope prevents access to soil, <br />• soil stripping equiFment and in areas occupied by rock or soils with <br />n <br />U <br />unfavorable particle size distributions. Soils of this complex occupy <br />slopes of 15 percent or greater, or the soils may be canprisc{1 <br />predaninantly of xroc;k or greater than 25 pen:ent coarse fx•agrrents. F'or <br />specific areas of excessive slope and rock cranp~sition, the Soil <br />(~nservatxon Service indicates the soils to be a poor souxne of topsoil. <br />The remaining suitable sails of the Lazear-l(uck complex and the Witt and <br />Big Blue will provide between 6 and 12 inches of suitable topsoil. htr. <br />'dark Neele, a soil scientist with the Soil Consexvation Service, <br />ra:armended the use of Witt and Big Blue soils on the plateau south of <br />the mine bench. The plateau is at 77UU feet. The thick soils riake <br />excellent top sro il. <br />-9- <br />