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Melanie Curtis <br /> From: Doug Mensing [dougm@appliedeco.com] <br /> Sent: Tuesday, February 17, 2015 5:09 PM <br /> To: Melanie Curtis; Jenny, Melissa M MVP; Courtney Hall; Ben.Meyer@state.mn.us; <br /> bobbe@bolton-men k.com; David P. Martini; Stacey.Lijewski@hennepin.us; Adam Edwards; <br /> Lora Pohtilla; Michael D Olmstead; Steven J Groen <br /> Cc: Kim Chapman; Matthew Lasch; Brad D. King; gnelson@tonkawa.com; Elaine N. Franza <br /> (efranza@tonkawa.com); MAC@RugbyLaw.com; kclapp@carlson.com; <br /> jerryjjaps@hotmail.com; 'Mielke, Daniel' <br /> Subject: Nelson Restoration (12-0975) -construction status update <br /> Attachments: 20150213_130617.jpg; Nelson Resto_swale x-section.pdf <br /> All, <br /> Things continue to go well at the Nelson Restoration project: <br /> 1) Approximately 50%of the frost layer containing the cattail roots has been removed from the Deep Marsh <br /> excavation area, and most has been hauled off site for disposal. <br /> 2) Excavation of the Deep Marsh and thin spreading of hydric soils in Wet Meadow areas is-50%complete. <br /> 3) Excavation/thin-spread work will likely continue into next week. <br /> Regarding construction phasing, we are completing excavation/thin-spread work moving from the north to the south. In <br /> order to facilitate this work, we plan to excavate the northern swale soon; however, we will not connect it all the way to <br /> the culvert. AES has installed an arc of silt fencing around this outlet culvert(see attached photo), and we propose to <br /> not disturb this area. <br /> Based on the wetland's relatively low water level currently(presumably due to our dry autumn) and our interest in <br /> conserving as much wetland hydrology as possible (without elevating water levels in the basin),AES proposes to grade <br /> the two swales as gentle slopes from the existing culvert drainage elevations down to—Ift below the existing wetland <br /> surface (see attached sketch). This will maintain the basin's pre-construction surface hydrology and flow patterns, but <br /> will prevent undesirable drainage of the wetland. <br /> Please let me know if you have any questions. Thank you. <br /> - Doug <br /> Douglas M. Mensing, Senior Ecologist <br /> Applied Ecological Services, Inc. <br /> 21938 Mushtown Road <br /> Prior Lake, Minnesota 55372 <br /> office: (952)447-1919 Ext. 2# <br /> cell: (612)202-2252 <br /> fax: (952)447-1920 <br /> e-mail: dougm(&appliedeco.com <br /> www.appliedeco.com/springlakebranch.cfm <br /> www.theearthpartners.com <br /> Bringing the science of ecology to all land use decisions. <br /> 1 <br />