02/27/2002 Env Bd Packet - Laserfiche WebLink

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• • • ENVIRONMENTAL BOARD MEETING DECEMBER 19, 2001 grading plan/preliminary plat was submitted. The first plan should not have been reviewed. Two lots in the southeast would require fill in the new plan. Two items not included in the plan are the DNR ordinary high water line (OHW), and future soil disturbance issues within the "Tree Preservation Limits." Staff stated that the site was located in a Lake Protection Zone where no suggested development should occur, and a High Ecological Zone where protection strategies should be used to protect the surrounding resources. These zones are defined in the Lino Lakes Environmental Management Plan. The island is land cover classified as a recently developed forest in the Lino Lakes Environmental Management Plan. This classification does exist on the outside perimeter of the island. The upland portions of the island are however covered with older growth burr and white oak, ash, hackberry, and northern black cherry. The island is surrounded by cattail marsh and shrub thicket. The island was surrounded by a PSS 1/EM Cd wetland. Wards Lake is public waters and is situated in a Natural Environment Basin. Wa directions flow into Wards Lake and then go into Reshanau L the Rice Creek Chain of Lakes Park is static. Water holdin thus also limited. There was a discussion about a 200 fo the island. The buffer recommendation is suggested i Handbook. There was a discussion of surface wat hydraulic pulsing. It was suggested that the develop described in the Barr Engineering/Met Counc same Barr Engineering/Met Council guid- ;• volume evacuation, and pollution reduc a discussion of the need for the ponds t was I discussion of the northern be moved to the South side of the East Side of the island s There was a discussion o that lots should be des• s - guidelines for this . r Guidelines. There w .�., on the island .s the Tree Ordinanc that a five -year management plan from all asin area of the basin is endation on s Environmental and trying to reduce use iques such as those es. It was suggested that the oul used to reduce surface water 11 as for site protection. There was d for infiltration reasons. There It was stated that the swale should ere was a discussion of lot reduction on al infiltration area might be designed. ng € €,+ ses as an alternative design. It was suggested on -lot infiltration as much as possible. Suggested ed in the Barr Engineering/Met Council discussion about the not yet defined soil disturbance areas proposal. A tree inventory is required according to the discussion of the need to plant natural vegetation, and ag ment plan would need to be submitted. A protection and ould be developed for all tree, natural vegetation, infiltration, and water areas. There was discussion about the desire to develop a natural environment information sheet for all new residents moving on to the island. The need to regulate the use of buffer and protection areas was discussed. Staff recommendations followed: 1. Redesign Surface Water Plan. Use techniques such as are suggested in the Barr Engineering BMP Manual. Reduce hydraulic spiking and increase infiltration in ponding situations. Use infiltration/ponding design in areas where they would be effective and non - polluting. Ponds 1 and 2 do not work as designed. 2. Reduce lots /or cluster houses. Use rest of the Island for surface water treatment including buffering.