ENFORCE27313 - Laserfiche WebLink

Home Browse Search

Mr. Tom Schreiner January 11, 2002 Page 4 I MASSEY SEMENOFF SCHWARZ St BAILEY, P.C. with an additional structure UDFCD has committed to install in the River downstream of the Bull Seep Slough/South Platte River confluence. ^ First Creek Spillway As part of the presently effective Reclamation Plan at the Howe Pit, MPC is required to install a spillway capable of discharging a projected 4800 cfs through the Bull Seep Slough to the South Platte River from Reservoir B. This represents the 100-year flood event on First Creek being routed through Reservoir B. MPC's consulting engineers and the Task Force have spent numerous hours assessing various scenarios for passing such flows through the Bull Seep Slough starting from the northwest corner of Reservoir B (i.e., the spillway location presently designated in the Reclamation Plan). The Task Force has concluded that passing 4800 cfs through the Bull Seep Slough will require a significant channel on the McIntosh property located west of the Bull Seep Slough (i.e., the property that is also subject to the above mentioned Adams County conservation easement), and significant encroachment onto the Hazeltine property owned by the Denver Water Department, but operated by Albert Frei & Sons. In addition to concerns expressed by McIntosh and Denver Water, both the United States Army Corps of Engineers and Adams County have reacted negatively to the spillway scenarios presented. The scenarios evaluated also indicate that the historic flow of First Creek across the Howe property is the course the 100-year event would likely travel, which includes an historic path across both the Hazeltine property and possibly the Roadrunner property as well. As such, moving the spillway from the northwest corner of Reservoir B to a more central location on the divider between the Howe Pit and the Hazeltine Pit seems to make sense. MPC is in the process of initiating more specific discussions with the Denver Water Department and the South Adams County Water and Sanitation District on this point, since these entities will operate the property post-mining. For these reasons, the spillway, which MPC considers areclamation/post-mining feature (and not a drainage plan feature), has not been rendered on the attached Plan. Should you wish to review the spillway scenarios presented to the Task Force, please call me. ^ Path Forward MPC has directed its consulting engineers to commence the development of the construction drawings from which the Bull Seep realignment will be accomplished by March 31, 2002 (Section 2.6 of the Board's Order). As mentioned, the next meeting of the UDFCD Task Force will be on January 23, 2002. The primary purpose of the meeting will be to discuss the alignment .~ "-