09/10/2007 Council Packet - Laserfiche WebLink

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5. there is enough indication that there could be rare plants on part of the property, and the property should be surveyed to verify the presence or absence of rare plants. The area on the Wessel property that would be of concern is indicated on Attachment 10. 6. Suggest placing the buffer of the westem most wetland in Conservation easement since this forms part of the City Greenway system (Attachment 11). New wetlands constructed on the site as well as buffer areas should be planted with the City native seed mix. 7. Rain gardens proposed on the site should be designed with a low maintenance (unless there is agreement with new homeowners to manage something different) Maplewood - type of design. Design of these gardens should be submitted to the city as well as a perpetual maintenance plan. All designed ponds and infiltration features must have at least 3 -feet of sand separation between the ordinary high ground water level and the bottom of the structures. 8. Community drainfield should be approved by Anoka County Environmental 9. It is recommended that a temporary sediment pond be constructed to capture surface water runoff during construction. All proposed infiltration, wetland and rain - garden soils must be protected during construction. Suggest construction of new surface water features after major construction is complete. Features should be constructed with low impact/compaction, track -types of equipment and fenced off prior to construction. All soils determined to be more compact after construction than prior to construction in drainage/ surface water infiltration or management area will be loosed to pre - construction conditions. It is also recommended that all new yard soils have top -soil incorporated into the subsoil and tilled as deeply as possible. No soil may be imported or exported with out City approval. 10.. Recommended changes to the SWPPP are submitted to the City Engineer to make changes to the documents submitted. Changes should include City native seed mix in all final grade stabilization, and installed by a DNR listed contractor. • Page 2 • • •