Laserfiche WebLink
Sundance Sand and Gravel Resource, M-2006-073 <br />Response to Adequacy Review 07 <br />February 20, 2007 <br />Page 6 <br />adherence to all applicable water-related laws and regulations, as indicated by <br />Rule 3.1.6. <br />Please note that slurry walls (and de-watering trenches along the site perimeter <br />where continuous pumping will be required during operations, particularly Phase <br />2A, as revised) will have a significant mitigation effect. In addition, the applicant <br />has secured multiple water sources for augmentation, and surplus water will also <br />be available for resource-specific mitigation, if needed. <br />At this time, the applicant is undertaking detailed study of potential impacts to <br />area wells and the hydrologic balance in general. A hydrogeologic consultant <br />has been retained and will assist in the development of operational strategies <br />and mitigation measures, as needed, to assure that the quantity and quality of <br />groundwater in the vicinity is not adversely impacted. This study is part of the <br />applicant's on-going commitment to minimize impacts and comply with all <br />applicable water law and regulations. <br />Exhibit J: <br />Responses concerning the Division's comments concerning Rule 6.4.10 are as <br />follow: <br />1. Descriptions of present vegetation types, including quantitative estimates <br />of cover and height for the principal species in each life-form represented <br />(i.e., trees, tall shrubs, low shrubs, grasses, forts). Please provide the <br />quantitative estimates. <br />A study done by ERO Resource Corporation found the vegetation in the <br />riparian areas to include plains cottonwood, peachleaf willow, American <br />elm, crack willow, Russian olive, box-elder, green ash, coyote willow, salt- <br />cellar. The understory species include snowberry, smooth brome, white <br />panicle aster, virgin's bower, oakleaf goosefoot, common reed, and prairie <br />cordgrass. Other species not associated with wetland characteristics <br />include bindweed and summercyprus. A small wetland was sampled and <br />cattail, creeping spike rush, soft-stem bulrush, Baltic rush, foxtail barley, <br />clusterd field sedge, three-square rush, curly doc, and little barley were all <br />found there. <br />Vegetation in the southern agricultural field includes smooth horsetail, <br />Canada thistle, quackgrass, common teasel, and field bindweed. Four- <br />winged saltbrush, curly doc, Russian thistle, and gumweed were also <br />found in non-riparian area of the site. <br />