Laserfiche WebLink
o Subirrigation is evident on 95 acres of land in the allu- <br />vial area adjacent to Bolton Draw between the stockpond <br />and its' confluence with the Canadian River <br />(Exhibit 2, Vol. I of the permit application). <br />o The potential for flood. irrigation exists, as 55 acres <br />along the stream have been historically flood irrigated. <br />Furthermore, a regional study done for the Marr Strip <br />Mine indicates that streams with similar drainage areas <br />and irrigable acreage have been irrigated in the North <br />Park area (60 square mile study area). Bolton Draw, how- <br />ever has depended on water imported from the Michigan <br />River basin for irrigating land along the stream (see <br />Chapter III of this TEA). <br />A monitoring program has been proposed to allow detection of <br />any degradation of the water resource, including the alluvial <br />valley floor. The program consists of two surface water monitor- <br />ing stations and 15 groundwater wells. One of these, Well 2, is <br />set in the Bolton Draw alluvium and will be used to monitor <br />potential impacts to the AVF. <br />The alluvial valley floor analysis, as an interdisciplinary <br />study, is based on an evaluation of surface water, groundwater, <br />soils and vegetation resources at the site. In order to evaluate <br />the soil resource, the applicant has used a topsoil suitability <br />rating system developed by the Wyoming Department of Environment- <br />al Quality, Land Quality Division. <br />With the exception of the Spicerton and Manburn soils, the <br />soils of the permit area are within the .fair to good suitability <br />rating as topsoiling material. The Spicerton soil is limited by <br />high SAR levels. From a depth of 12 to 60 inches, the SAR ranges <br />from 21.3 to 33.8. Therefore, Wyoming Fuels will limit stripping <br />to a depth of 1 foot to insure a minimal amount of soil having a <br />high SAR. The Manburn soil is a shallow soil with less than 20 <br />-44- <br />