Laserfiche WebLink
<br />Moores Pit <br />1. Huddleston-Berm- <br />#00966-0001 <br />04/28/10 -' <br />With regard to Pond 2, while this pond is somewhat higher than Highway 141 (-50 ft), the pond <br />is located approximately 250 feet away from the roadway. In addition, Pond 2 is located within <br />an existing drainage - not above the steep slopes immediately adjacent to Highway 141. As a <br />result, Pond 2 is not anticipated to impact Highway 141. <br />Concerning the issue relating to stormwater infiltrating and perching on a less permeable <br />material, HBET understands that the stoney clay loam soil shown on the drawings was arbitrarily <br />assigned based upon information from the USDA Soil Conservation Service soil survey maps. <br />However, the slopes above and below Highway 141 were observed to be comprised entirely of <br />sand, gravel, and cobble materials consistent with the materials currently being mined. HBET <br />observed no evidence of a clay seam or other'low permeability material which may act to perch <br />water which infiltrates from the stormwater ponds. <br />In general, based upon our observations at the site, provided the stormwater detention ponds <br />perform as designed, HBET does not believe that saturation and/or seepage will impact the <br />stability of the dense gravel and cobble materials which comprise the slopes above and below <br />Highway 141 in the vicinity of the site. <br />We are -pleased -to be -of-service °to -your-project. "Please contact us if you have any questions or <br />comments regarding the contents of this letter. <br />Respectfully Submitted: <br />Huddle$to 'Berpy Engineering and Testing, LLC <br />Michael A. Berry, P. <br />Vice President of En <br />IVAINIQ At I V1?f%MrTC%M AA_ \I.,.,.a. kf;w; n f 1 nAAOl.F_N I \/.,.,... ('a..lM - I AIIIIfl,l- <br />1)