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7, The next meeting was scheduled for February 18, 2004, 9:00 at Olsson Associates' office. I I . I I I I I . I I I I I I I I '. I 0\. Massey Draw and SJCD Update Project Meeting Minutes January 28, 2004 Page 2 of 2 OLSSON ASSOCIATES ENGINEERS' PLANNERS' SCIENTISTS' SUflVEYORS 143 Union Blvd. Suite 700 Lakewood, CO 80228720-962.6072 MEETING MINUTES 5, Two models will be prepared for the study. The first will be a calibration model, which will include the existing Ken Caryl detention basins that are located west of the hogback. This model will be calibrated to approximate the flows from the Flood Insurance Study and the 1985 UDFCD memorandum. The second model will be a baseline model, which will include the detention basin on Massey Draw upstream of Carr Street, and the detention basin on SJCD (South) that is located in the Sanctuary, upstream of Kipling Street. UDFCD approved the Sanctuary detention basin for maintenance eligibility. The baseline model will include future land use conditions. Since the watershed is almost built out, it was agreed that an existing land use condition model is not needed. Massey Draw and SJCD (South) Update OA Project No. 02-2003-1321 January 28, 2004 Attendees: Ben Urbonas - Urban Drainage and Flood Control District Paula Lundquist - Jefferson County Alecia Cope - Jefferson County Bob Deeds - City of Littleton Larry Mugler - Denver Regional Council of Governments Scott Franklin - Corps of Engineers Rick McLoud - Centennial Water and Sanitation District Justin Werdel- CDOT R6 Hydraulics Sean Warren - Ken Caryl Ranch Master Association Bruce Buttner - Olsson Associates David Krickbaum - Olsson Associates Dana Carter - Olsson Associates 6, Justin Werdel will provide information regarding the culverts along C470, as well as the names of contacts for the environmental impact study that is being prepared for C470. 1. David Krickbaum gave a project overview, with a brief description of the problem areas that were initially identified in the watershed, cc: Attendees via e-mail Russ Clayshulte via e-mail Paul Winkle Kent Wiley Larry Lang via e-mail Gene Reetz John Liou Bill Kieck via e-mail Melissa Chew via e-mail Tim Carey via e-mail Discussion Items: 2, Sean Warren questioned why the study is not extending past the Hogback, The Ken Caryl area is experiencing channel erosion problems. He added that a hazard study was done in 1997 that identified several problems in Massey Draw west of the Hogback, Paula Lundquist explained that the developer did not submit the drainage improvements to Urban Drainage and Flood Control District (UDFCD) for approval and are not eligible for UDFCD maintenance, Therefore, any drainage improvements would have to be constructed as a capital improvement project. The County does not believe that using public money for projects on private open space is a good use of public funds. The UDFCD master planning process, capital improvement and maintenance programs were further explained. Sean will discuss this further with the County and UDFCD. 3, The watershed delineations will be sent to Ben Urbonas for review. The NRCS soils information shows the area contains mostly hydrologic group c and D soils. 4. Paula will provide the South Jefferson County Community Plan for identifying future land uses. The Jefferson County GIS land use data will be used and supplemented to reflect recent development that has occurred.