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- , iiiiiiiiiiiuiiiiii • BULL SEEP MEETING MINUTES NOVEMBER 13, 2001 1:30 PM MINUTES Attendance: (SEE ATTACHED LIST) Location: Urban Drainage & Flood Control District Boazd Room Time: 1:30 PM Date: Tuesday, November 13, 2001 Meeting Minutes: 1. An attendance list was passed azound. Bryan Kohlenberg (UD&FCD) and Craig Jacobson (ICON Engineering) mentioned that comments on the Meeting Minutes from Oct. 29'h have been received and revised minutes will be sent out shortly. 2. John Hickman (Lafarge) began the discussion by mentioning that they had taken the comments from the last meeting and had made refinements to the plans. He was looking for a decision regarding the Final approach from the group. He mentioned [ha[ they focused on a shallower, wider channel for Bull Seep, between [he confluence with First Creek and the Bull Seep Slough. I50-cfs and 200-cfs discharges were assumed used for the 100-year flows from the Bull Seep and First Creek flows respectively. .Abase flow of 10-cfs was assumed for the design. According to John, they estimated that typically around 5-cfs is dischazged into the channel from dewatering and the historic Bull Seep base Flow was around 4-cfs. Ken McIntosh (McIntosh Farms) thought the Bull Seep base flow estimate was low. The plans also included a recommendation for improvements at the South Platte bank failure area 3. Access to the improvements was discussed. John Hickman stated the conservation easement could be accessed via two structures that currently cross First Creek and the Bull Seep near the First Creek/Bull Seep confluence. He added that these crossings were temporary and would be removed at the end of mining operations. Rick Anderson (Adams County) mentioned that the County would need permanent access [o the conservation easement. Bryan Kohlenberg identified that a crossing off of the Hazeltine Pit (over Bull Seep Slough) was not proposed. He mentioned that they would need access for maintenance on the South Platte River in this area and that a low flow crossing could be incorporated upstream of the proposed drop (on Bull Seep Slough). Jim Weldon (Denver Water) asked if a formal access easement had been developed in that area. Bryan said the District has a formal easement that addresses access to the easement but he was unsure whether or not the culvert crossing was specifically addressed in the easement deed, but historically, both the UD&FCD and the Brantner Ditch Company used the old culvert crossing. It was not clear who had maintained the crossing in the past. Jim mentioned that maintenance access agreetnents through [he area should be solidified. 4. John Hicktnan continued discussing the new plans. He mentioned that [hey had shown an overflow spillway from Reservoir B (Howe/Hailer Pit). They haven't C:\R'I\!)O~VS\"I'IIil91'\I I-I ~ nuuinednc!'.`"~"„"^~~ ~'~.~..,a,<;,.c,`~-~-,T„' ~,~.,.,=a.,• ~ ~~