07-23-2003 Council Agenda - Laserfiche WebLink

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July 3, 2003 File: 821110J -0240 R, Green Company Honorable Chair and Planning Commission City of Little Canada 515 Little Canada Road East Little Canada, MN 55117 -1633 RE: HAMEL ESTATES CITY OF LITTLE CANADA Dear Planning Commission Members: As stated in the review letter dated May 23, 2003, the City had concerns with the proposed location of the pond as shown on the last plan. Due to both the City's concerns and the Ramsey Washington Watershed's concerns a meeting was held on July 1, 2003 with Rob Carlson and Chuck Plowe (developer's engineer) to discuss storm water issues as related to the site. The watershed indicated that they would not allow the pond to be constructed at the proposed location due to the proximity to the steep slope to the east and the possible erosion potential if the pond were to overflow or fail. In addition the Watershed indicated that they would prefer that the storm water not be discharged into Twin Lake, both for the impacts to the existing slope that would result from installation of an outlet pipe and the additional discharge to the lake. However, the Watershed indicated that they may allow it if no other options were feasible for an outlet. At this time no response has been received from Mn /DOT if they will allow discharge of storm water from the Twin Lake area to the ditch system along interstate 694. However this option was discussed as a possible alternate. Although Mr. Carlson did express some concerns as to the cost of such a system and the disturbance along Twin Lake Road. The only area with sufficient size within the plat to accommodate a pond, using the proposed lot layout, is the northwest corner of the intersection of the proposed Hamel Court and Twin Lake Road. Therefore, Mr. Carlson was going to have his engineer relocate the pond in that area and move forward with design of an outlet to Twin Lake. The Watershed indicated that in addition to moving the pond, a minimally disruptive construction method would need to be used to install the outlet pipe down the steep wooded slope on the east side of the plat and that some form of velocity control structure be required at the end of the outlet to ensure against erosion. Even with these measures they would not guarantee that the Watershed Board would approve the outlet to Twin Lake. A new preliminary plat was submitted for review prior to the meeting held with the developer on July 1, 2003 showing the new proposed lot layout with the removal of the outlot as requested by the City Council. However, no revised plans have been received for review at this time so the location of all necessary drainage and utility easements are unknown at this time. Our only comment at this time given that no new plans have been submitted for review is that drainage and utility easements will need to be shown along all lot lines within the plat. If approval is Ltr 070303 PIngCom.rev