09-18-1995 Planning Packet - Laserfiche WebLink

Home Browse Search

Determination of the Necessity of an Environmental Impact Statement for the Long Lake Improvement Project Page 2 Improvement Project involves four separate project components: (1) construction of a two cell wet detention basin/wetland at County Road 6 in the City of Orono; (2) construction of a two cell wet detention basin/wetland at Deer Hill Road in the City of Medina; (3) the enlargement of two existing stormwater sedimentation basins in the City of Long Lake; and, (4) the application of aluminum sulfate (alum) to Long Lake to control internal phosphorous from the lake sediments. Studies discussing the use of w'ct detention basins as useful tools in improving water quality include Metropolitan Washington Council of Governments, Urban Runoff in the Washington Metropolitan Area (1983) and W.W. Walker. Phosphorus Removal by UrbaQ Runoff Detention Basins. Lake and Reservoir .Management. Vol. Ill (1987). Smdies discussing the use of alum as a useful method to control internal phosphorous include R.A. Freeman and W.H. Everhart, Toxicity of Aluminum Hydroxide Complexes in Neutral and Basic Media to Rainbow Trout. Trans Am. Fish Society No. 644-658 (1971) and R.H. Kennedy and G.D. Cooke. Aluminum Sulfate Dose Determination and APPHcatiOji Techniques. Restoration of Lakes and Inland Waters, EPA 400/5-81-010 (1980). The various regulatory agencies that have authority over the permitting of the Project have been kept informed of the design of the Project and their input was obtained during the design process. Regulatory agency comments have been incorporated into the final design to the greatest possible extent while retaining the overall project objectives. In addition, a tech^cal advisor^' committee has provided technical input during the planning and design stages of the Project. The Committee was comprised of representatives from the Cities of Lons Lake, Medina and Orono. the Board of Water and Soil Resources, the Minnesota Pollution Control Agency (MPCA), the Minnesota Department of Natural Resources (DNR). Henneoin Conservation District and interested citizens. 4 An Environmental Assessment Worksheet (EAW) was prepared for the project and submitted to the Environmental Quality Board (EQB) on June 9. 1995. Notice of the availability of the EAW was published in the EQB Monitor on June 19, 1995 and the comment period on the EAW closed on July 19. 1995. None of the commenlers requested the preparation of an EIS. The .MCWD, as the RGU for the project, received six (6) sets of written comments on the EAW. The MCWD has responded in writing to each of the comments and provided a copy of the responses to the conunenters. Additional information regarding the project can be found in the documents listed above and incorporated herein. 066/22090508 8/11/95