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<br />December 10, 2001 <br /> <br />3585 N.lEXINGTON AVENUE, SUITE 330 <br />ARDEN HillS. MINNESOTA 55126-8056 <br />PHONE 651-766-4191 . FAX 651.766-4196 <br /> <br /> <br />Board of Manage <br />Regular Meetings: <br />2nd and 4th Wednesdays <br />at Shoreview City Hall <br /> <br />BONITA TORPE, Admin. Assist. <br /> <br />Rice Creek Watershed <br /> <br />Mr. Randy Neprash <br />Bonestroo Rosene Anderlik and Associates <br />2335 West Highway 36 <br />St. Paul, MN 55113 <br /> <br />Re: City of Centerville Surface Water Management Plan (2nd Draft) <br /> <br />Dear Mr. Neprash, <br /> <br />Emmons & Olivier Resources (EOR), engineers for the Rice Creek Watershed District, has reviewed the Draft <br />City of Centerville Surface Water Management Plan (2001) and response to comments dated October 19. 2oot. <br />The purpose of this memorandum is to outline the Rice Creek Watershed District's questions and concerns <br />regarding the Draft Plan. <br /> <br />General Comments <br /> <br />The original Draft SWMP was submitted to the RCWD in early 1997. Since that Plan was submitted, the RCWD <br />has updated their Watershed Management Plan. While the RCWD works to limit the number of revisions to the <br />2nd Draft SWMP at this stage in the Plan process, it is necessary to understand that there have been significant <br />changes to the Watershed's Plan, and thus those changes need to be reflected in this Local SWMP. <br /> <br />Specific Comments <br />The current issues are listed below with reference to the section in the Draft Plan. <br /> <br />5.2 - An objective should be included that will address promoting groundwater recharge and incorporating <br />infiltration and low impact BMPs. The Water Resources Management Plan should contain the methods and <br />framework to achieve this objective and the Implementation Plan should contain methods for implementing this <br />objective. <br /> <br />Objective 3 should read "Protect and improve water quality...". Include in Objective 3 policies that include <br />identifying retrofit opportunities in subwatersheds where water quality treatment standards are not being met <br />and promoting the use of infiltration and low impact BMPs to improve water quality. <br /> <br />6.1 - Sediment removal should be included in the pond maintenance program. The current Wetland <br />Conservation Act provisions (8420.0540) include a section on maintaining the phosphorus removal efficiency of <br />storrnwater ponds used for wetland mitigation/replacement. The Local Water Management Plan should <br />address the specific standards that will be used to determine when maintenance of stormwater ponds will be <br />conducted in order to comply with the new WCA standards. <br /> <br />6.2 - The first floor requirement should include a minimum of two feet above the l00-year flood elevation and a <br />minimum of one foot above the emergency overflow elevation. Additional requirements are necessary for <br />landlocked areas. <br /> <br />A.I. CARDINAL, SR. <br />ANOKA COUNTY <br /> <br />TOM WADDEll <br />RAMSEY COUNTY <br /> <br />BOARD Of MANAGERS <br />JAMES A. LEROUX <br />WASHINGTON COUNTY <br /> <br />ORDEEN J. BRAATHEN <br />RM15EY COUNTY <br /> <br />R081N COOEGE <br />ANOKA COUNTY <br /> <br />EMMONS & OUVIER RESOURCES COll5ulting Engineers 651.77Q-8448 . Co-Counsel: HAROLD H. SHEFF 611.332.1000, MICHELLE]. ULRICH 651-699.9845 <br />