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Ms. Rachel Juba <br />Page 2 <br />September 14, 2017 <br />Low Impact Desi rt <br />The MPCA advocates the use of Low Impact Design (LID) practices to aid in the minimization of <br />stormwater impacts. LID is a stormwater management approach and site -design technique that <br />emphasizes water infiltration, values water as a resource, and promotes the use of natural systems to <br />treat water runoff. Examples include: <br />• Special ditches, arranged in a series, that soak up more water <br />• Vegetated filter strips at the edges of paved surfaces <br />• Trees or swales between rows of cars <br />• Residential or commercial rain gardens designed to capture and soak in stormwater <br />• Porous pavers, concrete and asphalt for sidewalks and parking lots <br />• Narrower streets <br />• Rain barrels and cisterns <br />• Green roofs <br />LID concepts may be found in the State of Minnesota Stormwater Manual dated November 2005 located <br />on the MPCA website at: http•//www pca.state.mn.us/water/stormwater/stormwater-manual.htmi. <br />In addition, the MPCA LID webpage provides a description and examples of LID features such as <br />permeable pavement, rain gardens, and green roofs. Links to other resources on LID are available as <br />well. The website is located at: https://www.pca.state.mn.us/water/stormwater-management-low-. <br />imi2act-development-and-green-infrastructure. <br />We appreciate the opportunity to review this Project. Please provide your specific responses to our <br />comments and notice of decision on the need for an Environmental Impact Statement. Please be aware <br />that this letter does not constitute approval by the MPCA of any or all elements of the Project for the <br />purpose of pending or future permit action(s) by the MPCA. Ultimately, it is the responsibility of the <br />Project proposer to secure any required permits and to comply with any requisite permit conditions. If <br />you have any questions concerning our review of this AUAR Update, please contact me by email at <br />Karen.kromar@state.mn.us or by telephone at 651-757-2508. <br />Sincerely, <br />Uf Aem V OA,."v <br />Karen Kromar <br />Planner Principal <br />Environmental Review Unit <br />Resource Management and Assistance Division <br />KK:bt <br />cc: Dan Card, MPCA, St. Paul <br />Jim Brist, MPCA, St. Paul <br />Bill Wilde, MPCA, St. Paul <br />Todd Smith, MPCA, St. Paul <br />Corey Mathisen, MPCA, St. Paul <br />Teresa McDill, MPCA, St. Paul <br />