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Re: bldg/grading/buffer plans
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Re: bldg/grading/buffer plans
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Last modified
8/22/2023 5:26:09 PM
Creation date
7/31/2018 12:37:37 PM
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x Address Old
House Number
520
Street Name
North Arm
Street Type
Drive
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520 North Arm Dr
Document Type
Correspondence
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0611723310005
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. <br /> mitigation for the full aznount of the impacts regardless of the WCA exemption. If <br /> more than two acres of wetland impacts aze proposed, an individual permit will <br /> automatically be required which includes sequencing(providing there are no <br /> alternatives)review by other environmental agencies, a public comment period, <br /> and compensatory mitigation. The COE contact person for Hennepin County is <br /> Joe Yanta(651-290-5362). <br /> Minnesota Frotected Waters Act <br /> The Department of Natural Resources (DNR)has jurisdiction over waters of the <br /> state that aze generally Wetland Type 3,4,and 5, and aze larger than 2.5 acres in <br /> incorporated areas or 10 acres in unincorporated azeas. There is one DNR <br /> protected wetland listed on this site,wetland# 1 (the North Arm)with an <br /> Ordinary High Water(OHV� level of 929.4 established. The OHW for a lake or <br /> wetland is determined by the DNR as the elevation at which the vegetation <br /> changes from aquatic to terrestrial. For a watercourse the OHW is the average <br /> elevation of the top of the channel banks at any given location. The DNR has <br /> jurisdiction over areas below the OHW.No impacts are allowed below the OHW <br /> which would have the effect of converting protected waters to upland. Although <br /> some activities such as vegetation clearing, sand blankets, docks, etc. may be <br /> allowed by the DNR,they may require a permit and the DNR should be consulted <br /> as to limitation on any activity below the OHW. The DNR contact is Tom Hovey <br /> (651-772-7977). <br /> Minnesota Wetland Conservation Act(WCA� <br /> A Local Unit of Government(LGU)will have jurisdiction over the wetlands on <br /> the site, based on the WCA as amended through 2000. The LGU for this site is the <br /> Minnehaha Creek Watershed(Eric Evenson,(952-471-0590). There is a WCA <br /> deminimis exemption for the project for the first 2,000 square feet of wetland <br /> impacts to Type 1, 2, and 6 wetlands outside of a shoreland protection zone. <br /> Within a shoreland protection zone (1,000 feet for a lake and 300 feet from a <br /> river)and for other types of wetlands the deminimus exemption is limited to 400 <br /> square feet. If the site plans include wetland impacts,which exceed the exemption <br /> limits, a WCA permit will be required from the County. Under the WCA rules, an <br /> applicant must demonstrate that wetland impacts have been avoided and <br /> unavoidable impacts minimized before the activity would be permitted. These <br /> rules also require a 2:1 mitigation ratio for fillin�or drainin in anv wetland, or <br /> excavation in semi permanentl�to permantel ��flooded wetlands Projects with <br /> proposed wetland impacts must also develop a 5-yeaz monitoring plan to <br /> determine if the mitigation plan is successful. Permanent deed restrictions will be <br /> required over the mitigation azea. <br />
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