4D, Purchase Agreement for Wetland Banking Agreements

Home Browse Search

_ _ _ _ _ _ _ _ i�. . _ EN HILLS MEMORANDUM DATE: October 12, 2009 TO: Honorable Mayor and City Council Members Ron Moorse, City Administrator FROM: Michelle Olson, Parks and Recreation Manager SUBJECT: Purchase Agreement for Wetland Banking Credits Back�round __� The City of Arden Hills contracted with Kimley-Horn for engineering services related to the Safe Routes to School Project on August 25, 2008. The City was officially awarded grant funding on June 10, 2009 which combined the Safe Routes to School and Perry Park proj ect, now identified as the Elmer L. Andersen Memorial Trail Connections. Kimley- Horn has been working on the environmental aspects of this proj ect, including wetlands, modeling, and permitting. At the June 15, 2009 Council Work Session, staff presented the wetland mitigation requirements that would be necessary in order to receive final approval through the D1�TR and Rice Creek Watershed District. Two wetlands, identified as DrTR protected waters, have been identified directly adj acent to or partially within the existing right of way of the pathway planned for the south side of County Road E2. Both wetlands also have associated 100-year floodplains identified. It was estimated that 4,000 square feet of impact is not avoidable to the eastern wetland, while impact to the western wetland can be avoided through construction of a 375 foot long retaining wall. Mitigation for the wetland impacts is required and can be accommodated via purchasing credits from a wetland bank. The original estimate for this mitigation presented to Council was at $1.50/square foot or $12,000 (2:1 replacement ratio required). We have now finalized the wetland impacts to this proj ect. In addition to the estimated 4,000 square foot of impacts identified in June, we also have 400 square feet of impacts as a result of the construction of the culvert crossing. After final determination, the final purchase price for the wetland credits needed to mitigate these impacts is $13,198.68. We are purchasing these wetland credits from Restoration Development, LLC. There is also a permit fee of $857.91 due to the Minnesota Board of Water and Soil Resources (BWSR). The closing date for this purchase has been scheduled for Tuesday, October 13 2009 at 11:00 a.m. at City Hall. The purchase agreement is attached. The City Attorney has reviewed the document. As a part of the agreement, floodplain storage volume lost due to fill will also need to be replaced on-site via excavation. As a result a small amount of runoff volume needs to be directed to an infiltration or filtration area, which could be in the form of a small rain C: IDocuments and Settings I becky. brazys ILocal S'ettings I Temporary Internet Files IOLKI SF1101209 Purchase agreement for wetland credits. doc