Laserfiche WebLink
transmission line. The barge has been designed for a 13 -foot vertical rise in the <br />tailing pool; however, it can actually rise more than 13 feet because of the hinged <br />joints on the pipe and walkway gantries. The expected water level rise in the pond <br />during the PMF is about 5.2 feet. It is possible, however, that a storm of this <br />magnitude could create some issues with the operation of the barge that could delay <br />operation. It is assumed that the barge would be operational on the fifth day after the <br />PMF event. The pumping capacity of the barge system is 12,700 gpm (28.3 cfs). <br />The normal discharge point for the pump barge is into East Branch Reservoir. As <br />previously described, the design of the barge system includes a lateral that can be <br />used to discharge directly into the flood bypass system near East Branch Dam. The <br />flow is then conveyed through the bypass system to the Williams Fork River. <br />• Portable On-Site Pumps: Portable pumps could be used to pump floodwaters from <br />the pond. The probable location of the portable pumps would be on the north end of <br />the pond, discharging into the lower end of the bypass canal. Henderson has one <br />12 -inch portable pump available on site. This pump is a Power Prime Model HH -250 <br />with an approximate pumping capacity of about 4,500 gpm. In addition, two 8 -inch <br />pumps would be available from the Climax Mine near Leadville, which is also owned <br />by Climax. These pumps are Power Prime Model HH -150 with an approximate <br />pumping capacity of about 2,300 gpm each. All three of these pumps are maintained <br />for emergency use. The total pumping capacity for the three "on- site" pumps is about <br />9,100 gpm (20.3 cfs). It is assumed that the portable on -site pumps would be <br />operational on the fifth day after the PMF event. <br />• Portable Off -Site Pumps: In the event of a PMF at the Henderson Mill, it would be <br />likely that additional portable pumps would be mobilized to the site. Portable pumps <br />are generally readily available from the Denver and Salt Lake City areas. It is <br />assumed that portable off -site pumps could be mobilized to the site and set up to run <br />on the tenth day after the PMF event. <br />16 <br />