Laserfiche WebLink
defined floodplain area, most likely as overland flow (assuming no infiltration), and in a general <br /> northeasterly direction(Le.,away from the structures)of concern). <br /> ht such a hypothetical "worst-case" scenario, approximately 22 to 27 gallons of fluid(roughly 50 to 60% <br /> of the total pipeline capacity)would likely be released to the ground surface. For the sake of conservatism. <br /> assume a 30 gallon release. At 7.48 gallons per cubic foot, this represents approximately 4 cubic feet of <br /> water. This volume, if it reports in entirety to the structure of concern, would result in a pool depth of <br /> slightly less than 0.5 inches over a nominal 10-feet by 10-feet area (absent representative measured <br /> dimensions, i have used this as an assumed representative structure footprint area). However, that <br /> theoretical maximum exposure potential of less than 0.5 inches of water would in most instances be <br /> significantly reduced by the effects of infiltration(stream banks above bedrock generally are comprised of <br /> fluvial materials),soil absorption,evaporation effects,flow course dispersal/deviation,localized elevational <br /> characteristics at and around the structure, and any super-elevation of the structure above grade(i.e., it is <br /> likely that the structure floor(s)are at or above grade). <br /> Based on the foregoing, it is my opinion that the presence of the pump house inlet line serving the Times <br /> Mine pipeline does not pose any significant or�meaningful risk of damage potential with respect to the <br /> subject permanent structure(s)present proximal to the pipeline,as described. This opinion is based on the <br /> above-stated pipeline design parameters and other information, to include aerial and survey mapping, as <br /> provided by Colorado Milling Company. No design drawings or improvement location survey(s) as <br /> pertaining to the subject strueture(s) have been provided or reviewed. No onsite inspection specific to the <br /> subject evaluation has been conducted; however, the signatory below is familiar with the location and <br /> features thereon through multiple site visits conducted since 1998. <br /> E <br /> .oi 393 � <br /> 9 tSOAM4 Ze i4 <br /> 44 At <br /> AL <br /> Jame eck, P.E. <br /> Color o gistered Professional Engineer No. 25393 <br />