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• adoption of iriinimnm standards for storm sewer design that; <br />* address target nutrient loads <br />* establish permissible runoff rates <br />* provide for the removal of floatable pollutants <br />* set pond design standards for nutrient removal <br />• adoption of enforcement procedures and responsibilities for enforcing the <br />standards <br />These requirements apply to revisions of first generation ”509" plans and any first <br />generation plans that are submitted to the BWSR after August 1, 1992. Many first <br />generation plans are due for revision during 1995. Many are not, however. <br />New requirements relating to water management can render a certain aspects of a "509" <br />plan out of date. Each of the 46 WMOs have to monitor these requirements and decide <br />whether they are significant enough to warrant revising their plan before its planned <br />revision date. In some cases, cities will be adopting more restrictive storm water design <br />requirements before the WMOs affecting them adopt a more comprehensive second <br />generation ”509" plan. This type of situation may well lead to local debates and possible <br />dilemmas. <br />Some cities have already found themselves in this situation. They’ve started to develop <br />their local surface water management plan in compliance with the WMO plans that <br />afiect them only to find that they now have to consider such things as the Wetlands <br />Conservation Act, water quality rule revisions, and the Met Council’s interim nonpoint <br />program. They are rightfully concerned about the potential of gaining the WMO’s <br />approval of their local plan and then finding that this is not enough to satisfy the <br />interests of state, regional and federal agencies. <br />III. Minnesota Statutes Section 103B3365 (The Reding Bill) <br />The BWSR also is responsible for the adoption of guidelines for implementation of MS <br />103B.3365, also referred to as the Reding Bill after the biUs primary author. Chapter 160 <br />of the Laws of 1990. This law requires local government units (LGUs) to require storm <br />water retention devices or areas for the runoff generated firom new developments that <br />create more than one acre of new impervious surface. (See Attachment A) The law <br />mandates that: <br />9 <br />• local governments require water retention devices or areas be installed when <br />more than one acre of new impervious surface is created. <br />• local water management plans (both metro and non-metro) specify the controls <br />best available technology to: