02/09/2004 Council Packet - Laserfiche WebLink

Home Search

• • Minnesota Pollution Control Agency December 17', 200'3 Mr. Michael Grochala: City of Lino Lakes 600 Town Center Parkway Lino Lakes, MN 55014 RE The Legacy at WoodsEdge Development Dear Mr. Grocbala: The draft Environmental Assessment Worksheet (EAW) for the Legacy at Woods Edge Development has been reviewed by Minnesota. Pollution Control Agency (MPCA) staff. This comment letter addresses matters of concern to MPCA staff reviewing the EAW and is submitted for consideration by the City of Lino Lakes, the responsible governmental unit, in deciding whether an Environmental Impact Statement should be prepared on the project., It does not constitute approval by the MPCA of any or all elements of the project for the purpose of pending or future permit action(s) by the MPCA. We have attempted to identify and consult with interested program staff to identify the MPCA permits that may be required. Additional comments or requests for information maybe submitted in the future to address specific issues related to the development of such permit(s). Ultimately, it is the responsibility of the project proposer to secure any required permits and to comply with any requisite permit conditions. The following comments are made for your use in revising the draft EAW. Item 17:b. This section should include the need to comply with the MPCA Phase II Stormwater Permit. The EAW states "Following development of the proposed site, storm water will be treated through infiltration in open spaces or subsurface chamber technology and through retention ponds that will meet National Urban Runoff Program (NURP) guidelines ..... ' The Phase II NPDES permit contains requirements for sizing and settling velocities that the pond must achieve in order to be in compliance with the permit. These requirements are not the same asNURP requirements and need to be incorporated in to the pond design." Thank you for the opportunity to review the EAW. Should you have any questions about this letter, please contact meat (651) 296-7796. Sincerely, Vn Kelly Garvey Project Manager Operations and Environmental Review Section Regional Environmental Management Division KG.min 529 Lafayette Rd. N.; Saint Paul, MN 551554194; (612).296.6300 (Voice); (612) 282 -5332 (TTY); www.pca.atate.mn.us St. Paul • Brainerd • Detroit Lakes • Duluth • Mankato • Marshal Rochester. Willmar Egeni oppott nityEmployer • Printed on recycled paper containing at Waal 20 percent fibers horn paper recycled by consumers. 1 RESPONSE The permanent storm water management system will consist of a combination of wet sediment basins and infiltration systems (underground chambers and ponds) to meet the requirements of the NPDES Permit No. MN R100001. Furthermore, the project has been designed to meet the Rice Creek Watershed District infiltration requirements of 0.34 inches of runoff and dead storage requirements of 2.5 inches of runoff. A large portion of the runoff from the site is directed to a series of infiltration basins /ponds located along the southerly and easterly boundaries of the site or through underground infiltration chambers. Runoff from these systems eventually outlet to a wetland (Wetland 2 on Figure 7 of the EAW) that is connected to another extensive wetland complex (Wetland 1) that is located in the George Watch Lake watershed.