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Performance Standard Proposed Practices and Performance Achieved <br /> Runoff Rate Control Bioretention basins are designed to maintain peak runoff rates for <br /> Maintain predevelopment the 1, 2, 10 and 100 year, 24 hour design storms. <br /> peak discharge rates <br /> Infiltration Bioretention basins are designed to maintain 90%of average annual <br /> 90%of predevelopment stay- predevelopment stay-on. <br /> on <br /> Any proposed changes to the stormwater management plan or construction schedule must be <br /> submitted and approved prior to implementation. <br /> If you have any questions, please contact me at your earliest convenience. <br /> Sincerely, <br /> Digitally signed by Jeremy Balousek <br /> P l DN:cn=Jeremy Balousek,c Dane <br /> County,ou=Water Resource <br /> Engineering Division, <br /> / ,email=balousek @countyofdane.com, <br /> c=US <br /> Date:2017.06.29 14:33:51-05'00' <br /> Jeremy Balousek, P.E. <br /> Cc: Grant Pokos, P.E., D'Onofrio Kottke and Associates, Inc. (email) <br /> Eric Rortvedt, P.E.,Wisconsin Department of Natural Resources(email) <br /> Lyman F.Anderson Agriculture&Conservation Center <br /> 5201 Fen Oak Drive, Room 208, Madison, WI 53718; Phone: (608)224-3730 Fax: (608)224-3745 <br /> https://wred-Iwrd.countyofdane.com <br />