Re: permit application/storage bldg

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� S / ` ' Henne in Count p Y An Equal Opportuniry Employer January 12, 2001 Mr. Eric Evenson Minnehaha Creek Watershed District Gray Freshwater Center, Suite 37 2500 Shadywood Road Excelsior,MN 55331 Re: Permit Appliation 00-243 Dear Mr. Evenson: On December 17, 1999 I submitted a project notification form and supporting wetland documentation for the proposed salt storage building at the Hennepin County maintenance facility in Orono. A revised notification form and wetland delineation report were submitted on July 20, 2000 with plans regazding erosion control measures, rate control of storm water runoff and re-vegetation of disturbed areas. These plans were revised again based on comments by District staff and resubmitted on August 10, 2000. District staff determined that the revised plans met District requirements and approval of the revised plans was placed on the consent agenda for the District's August 24 meeting. Mr. Guy Nowlan, Hennepin County Transportation Department, attended the August 24 meeting to answer any questions the Board might have concerning the project. The District Board expressed concern regarding the proposed wetland impacts and ta.bled the application. In addition, the Board directed District staff to meet with County staff regarding the application. Prior to meeting with District staff, County staff reviewed the submitted plans as well as eazlier preliminary drafts. The development of the site plan is summarized in the following paragraphs. The original site inspection and delineation was conducted on September 2, 1999. The inspection confirmed that the site had no wetlands protected by the Minnesota Department of Natural Resources (DNR) and three wetland areas were delineated. The proposed project did not result in any wetland areas being filled. One wetland area would be impacted by excavation activities. At that time, the Minnesota Wetland Conservation Act (WCA) did not require , replacement of excavation impacts provided the excavation did not result in a change of type. The proposed excavation would not result in a change of type. The proposed excavation impacts (less than 0.1-acre) were below the U.S. Army Corps of Engineers threshold for wetland mitigation. The impacted area was not on the City of Orono's protected wetland list or map. Although not required, the preliminary plans did create 4,064 square feet of type 1/2 (PEMA/B) � new wetland credit (NWC) and 9,767 square feet of buffer. Approximately one third of this Department of Environmental Services 417 North Fifth Street Recycled Paper Minneapolis,Minnesota 55401-1397 (612) 348-6509 FAX:(612) 348-8532 Environmental Info Line:(612) 348-6500