Agenda - Planning Commission - 02/02/2017

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09/22/16 REVISOR CKM/IL AR4240 58.1 (1) there are no alternatives for storm water treatment outside the bluff 58.2 impact zone on the site in question; 58.3 (2) the site generating runoff is designed so that the amount of runoff 58.4 reaching the bluff impact zone is reduced to the greatest extent practicable; 58.5 (3) the construction and operation of the facility does not affect slope 58.6 stability on the subject property or adjacent properties; and 58.7 (4) mitigation based on the best available engineering and geological 58.8 practices is required and applied to eliminate or minimize the risk of slope failure. 58.9 B. In the water quality impact zone, development that creates new impervious 58.10 surface, as allowed by exemption in part 6106.0180, or fully reconstructs existing 58.11 impervious surface of more than 10,000 square feet requires a postconstruction storm 58.12 water management permit from the local government consistent with the following: 58.13 (1) if a local government is covered by a municipal separate storm sewer 58.14 system (MS4) general or individual permit from the Minnesota Pollution Control Agency, 58.15 then the treatment requirements of the MS4 permit for postconstruction storm water 58.16 management for new development and redevelopment projects apply; 58.17 (2) if a local government is not covered by an MS4 permit, then runoff 58.18 from the new or fully reconstructed impervious surface must comply with the treatment 58.19 requirements in the current national pollution discharge and elimination system program 58.20 permit for construction storm water; 58.21 (3) local governments may adopt other treatment requirements approved 58.22 by the Minnesota Pollution Control Agency instead of those specified in subitems (1) 58.23 and (2); and 58.24 (4) multipurpose trails and sidewalks are exempt from subitems (1) and (2) 58.25 if there is down gradient vegetation or a filter strip that is at least five feet wide. 6106.0160 58