07/27/2016 Environmental Board Minutes

Home Search

Evironmental Board July 27, 2016 Page 2 APPROVED MINUTES 5. ACTION ITEMS A. Chavez Preserve, Site Plan Review The proposed Chavez Preserve development is a 2.40 acre proposed Residential development. The project is located north of White Pine Road, west of Laurene Avenue, and south of Baldwin Lake. The submitted survey is showing six single family lots, of an average size of 15,854 sq. ft. The project is located in the shore land overlay district of Baldwin Lake. The project is in a moderate amount of vulnerability to ground water pollution – Drinking Water Service Management Area. Soils Soil boring information must be made available to the city for review. Shore Land Overlay District Set back is not an issue with this project Threatened and Endangered/Unique Resource Considerations There are no Threatened and Endangered species on this property. Stormwater Pollution Prevention Plan Before ground disturbance occurs, all Minnesota Pollution Control issues for Construction Permit must be in place including a designated and certified inspector for the project. Stormwater Management There are two ponds proposed for the north side of the property and a rain garden proposed for the south side of the property. None of the ponds are suitable for infiltration in that the water tables are too high. The developer is proposing NURP and drainage to the NW in the NW corner pond and to the North in the East side pond. Drainage must not exceed existing rates of discharge from the site or allowable volumes. Proof that water leaving the site on the north side will not create wetter conditions for residents downstream. The south side has a rain garden designed into it. This rain garden is for rate control only. Staff is proposing they move this rain garden between the two ponds on the north and create an inflation train.