12/19/2001 Env Bd Packet - Laserfiche WebLink

Home Search

of excavation. There is always more room needed around house construction projects to build, and utilities can disturb the soil enough to warrant tree removal. There are some very nice old growth oaks on the island and good planing may save some of them. Restoration: Trees lost on this site should be replaced with similar species as much as space is available. There should be no tennis court types of backyard projects carved -out on proposed lots. Ground story vegetation reestablishment in all areas disturbed should be replanted with a native vegetation seed mixture as designated by the City of Lino Lakes. A 5 -year financed management plan needs to be submitted by the developer to ensure the reestablishment and management of this vegetation. A natural- environment information sheet specifically discussing environmental issues in these areas should be given to all new residents. Covenants, as part of a homeowner association should prohibit the removal of vegetation of any sort in shore -land management and restoration areas. Construction: All efforts can be lost with out proper sequencing on the Project. Protection of Trees, existing vegetation, swale and infiltration areas, as well as solid precautions to prevent erosion needs to be spelled out in a management plan. This plan should contain sequence information as listed in the Barr Engineering BMP manual (Exhibit 11). RECOMMENDATION: 1. Redesign Surface Water plan. Use Barr Engineering BMP Manual. Reduce hydraulic spiking in ponding situations. Use infiltration /ponding design in areas where they would be effective and non - polluting. Ponds 1 and two do not work. 2. Reduce Lots /or cluster Houses. Use rest of the island for Surface water treatment including buffering. 3. Move swale idea to South side of island. Incorporate rainpond idea into treatment train along proposed road to flow water to the infiltration area on East end of the Island. 4. Produce tree inventory. Needed for planning. 5. Replace Trees lost in areas of disturbance. 6. Restore all areas disturbed for road /bridge and surface water treatment/infiltration with native tree shrub and ground story vegetation. Materials replaced to be determined by inventory, and species list specified by the City. Site should be restored to pre - disturbance vegetation densities.