1998-10-22_AgendaPacket - Laserfiche WebLink

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Beltline Outlet Feasibility Study Earl Bancroft was present to discuss the Beltline Interceptor Outfall Feasibility Study which addresses the high pressure flow situation discovered following the July 1997 storms which caused many blow-out, erosion, and sedimentation problems. The study considers ten alternatives. The "no action" alternative actually proposes the minimum amount of work required to stabilize the existing plunge pool, estimated at $70,000 to $100,000. On a cost and benefit basis, the most feasible option in the study is Alternative l0, New Outlet to the Mississippi River Estuary without Pond. There is concern that the 100-year flood would raise the estuary level by . l or .2 foot, which could cause flooding problems if it were to inundate the railroad tracks. Another issue to consider is the difficulty of dealing with multiple owners of this railroad; virtually all of the major railroads serving the metro area own trackage rights through there. The cost of this alternative is approximately $2.0 million after coordinating with various railroad entities. Pam Skinner expressed her preference for Upstream Storage (Open Space Land Purchase) Alternative 4B because it incorporates integrated resource management aspects into the project. Further discussion was held on existing areas along the interceptor route that could provide more stormwater storage and treatment. Cliff Aichinger noted that money for the project would not be available until FY 2000; however, it could take a year jest to accomplish. the prelimnary work and all the extra coordination efforts. Earl stated that preliminary design studies could identify two or three options that offer the best combination of water resources, economics and added amenities that would be desirable to the public. Louise Watson mentioned the task force that was formed to address the Pigs Eye Lake landfill area, suggesting the possibility of integrating the District's plans with the rest of the development and preservation concepts that are currently being developed throughout the Mississippi River comdor. Staff was requested to provide additional information on the open space options. Earl stated that the staff will be further evaluating the effects and feasibility of Alternative 10 over the next year. Gervais Lakeshore Restoration . Bill Bartodziej gave a presentation on past, present, and potential future habitat management projects. His presentation. included discussion of the following projects: • Lake Gervais demonstration sites and the installation of lawn run-off monitoring systems. • Requests for assistance from neighboring lakeshore owners who have erosion problems on Lake Gervais. He has received similar requests to correct erosion problems on Tanners Lake. • Revegetation associated with stormwater detention ponds. • Control of reed canary grass. • Gervais Mill Pond shrub plantings. The District is partnering with the Ramsey County Correctional Facility to obtain the plants. • Tartan High School stormwater pond, vegetation management plan assistance. The District is partnering with the Ramsey County Correctional Facility to obtain the plants. In addition, Cowern School wants to do the same thing with their ponds. • North St. Paul Urban Ecology Center plantings. • Jim's Prairie and adjacent Pondview Apartments property. Jim's Prairie is managed by the Maplewood Nature Center who will lead the educational program involving the apartment residents. The District was asked to take the lead in vegetation management of a buffer area between the apartments and the prairie. The District is partnering with the Ramsey County Correctional Facility to obtain the plants. • Open space sites--buckthorn removal and prescribed burning. • Lexus dealership on Highway 61: Their prairie restoration failed so they asked for help from the District. Bill is suggesting a commercial alternative landscaping demonstration site. Page 4 September 2, 1998 RWMWD Minutes