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4 SEH Building a Better World for All of Us' MEMORANDUM TO: Mr. Leonard Linton, City Engineer, City of Ramsey FROM: Rebecca Beduhn, SEH Biologist DATE: October 7, 2021 RE: COR Wetland Monitoring SEH No. RAMSY 158452 14.00 Background and Purpose In 2005-2006, the City of Ramsey completed the construction of two wetland mitigation sites associated with the Center of Ramsey (COR) (previously Ramsey Town Center) development. These mitigation sites were permitted by the Lower Rum River Watershed Management Organization (LRRWMO) under permits 2003-07 and 2012-08. A third mitigation site, identified as"SW Pond"on the construction plans and "WNW" in the monitoring reports, was originally proposed but was not completed. Wetland credits were used in lieu of the third mitigation site. Monitoring reports were submitted or the two wetland mitigation sites in 2011 and 2012. Based on a letter submitted to the City of Ramsey from the LRRWMO on July 6, 2020, no subsequent monitoring reports have been completed. This memorandum provides a wetland delineation to determine the quantity and quality of the wetland mitigation created at the COR and determine if the sites are in compliance with the approved permit and wetland replacement plan. It is understood that the project impacted a total of 176,418 ft2(4.05 acres)of wetland. Application of a 2:1 replacement ratio result in a need to provide for 352,836 ft2 or 8.10 acres of mitigation. A portion of the mitigation was completed through the purchase of wetland credits, which provided for 105,602 ft2 (2.42 acres). Partial mitigation was also provided through construction of 97,600 ft2 (2.24 acres)of stormwater ponds within the COR site, which have been previously approved. A remainder of 149,634 ft2 (3.44 acres) of wetland mitigation is still required through on-site replacement. This remaining mitigation need was proposed through the construction of new wetlands with associated storm water and upland buffer components in two locations, identified as the Charter and Northwest sites. A summary of the wetland impacts and proposed mitigation needs are provided in Table 1. Table 1: Summary of Wetland Impacts and Mitigation Requirements Impact Summary Square Feet Acres Wetland Impacts 176,418 4.05 Wetland Replacement Ratio 2:01 Wetland Mitigation Required 352,836 8.10 Completed Mitigation Purchase Wetland Credits 105,602 2.42 Storm Water Ponds 97,600 2.24 Remaining Project-Specific Needs 149,634 3.44 Engineers I Architects I Planners I Scientists Short Elliott Hendrickson Inc.,3535 Vadnais Center Drive,St.Paul, MN 55110-3507 651.490.2000 1 800.325.2055 1 888.908.8166 fax I sehinc.com SEH is 100%employee-owned I Affirmative Action—Equal Opportunity Employer