Loading...
HomeMy WebLinkAbout20090316 - VIII-A-1 MEMO To:Honorable Mayor and City Council From:Tom Montgomery Date:March 10, 2009 Re:Approve Storm Water Management Plan As part of the Comprehensive Plan, the City prepared a draft storm water management plan that conforms to the requirements Vermillion River Watershed. Council was briefed on the storm water management plan as part of the other utility plans (water and wastewater) throughout the development and adoption of the City’s Comprehensive Plan. The main body of the storm water management plan is 260 pages long; complete with all of its appendices, the report runs to more than 1300 pages. A copy of the plan is available at the Cal Ruedy Public Works Facility. The draft storm water management plan was recently reviewed and approved by the Vermillion River Watershed. The City is required to formally adopt the plan after the Watershed’s approval. Following adoption of the plan, the City will need to revise its ordinances to conform to the rules and regulations of the Watershed by July of this year. I have enclosed copies of the first two chapters; the executive summary and the goals and policies, for the Council’s information. I will present a summary of the report at the Council meeting. City of Hastings Watershed Management Plan Section 1: Executive Summary Table of Contents 1.0Executive Summary.......................................................................................1-1 1.1Location and History................................................................................1-1 1.2Purpose and Scope..................................................................................1-1 1.3Regulatory Background and History..............................................................1-2 1.4Need for the Plan...................................................................................1-4 1.5Water Resources-Related Agreements...........................................................1-4 1.6Plan Organization...................................................................................1-4 1.7Plan Update and Amendment Procedures.......................................................1-6 City of Hastings Watershed Management PlanPage 1-i P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc 1.0Executive Summary 1.1Location and History The City of Hastings (approximate population 22,000 in 2007) is located in the seven county Twin Cities metropolitan area in southeastern Dakota County. The city currently covers 8,100 acres (12.7 square miles). By 2030, the population of Hastings is forecast to increase to 32,500 and cover approximately 10,537 acres (16.5 square miles). The City of Hastings is bordered on the north and east by the Mississippi River, on the east by Ravenna Township, on the south by Marshan Township, and on the west by Nininger Township. Major highways run through the city, including T.H. 55, U.S. Highway 61, and T.H. 316. Important water resources in the city include: The Mississippi River The Vermillion River Lake Isabelle Lake Rebecca The majority of Hastings is contained within the Vermillion River Watershed Joint Powers Organization (VRWJPO). A small portion of the northeast corner of Hastings is part of the Lower St. Croix Watershed Management Organization (LSCWMO). Surface water in Hastings flows generally east, eventually draining into the Mississippi River. The City continues to develop and annexations are expected in the next 20 years. Currently, there is a large area of rural/rural residential land on the east side of the city; higher density development is not expected in this area in the foreseeable future. The City expects to annex areas on the south and west sides of the city by the year 2030, bringing the total city acreage to 10,537 acres (16.5 square miles). Section 3.1 of this plan discusses land use in Hastings. 1.2Purpose and Scope TheCity of Hastings Watershed Management Plan (Hastings Plan, City Plan or Hastings WMP) is a local water management plan meeting the requirements of Minnesota Statutes 103B.235, Minnesota Rules 8410, the Vermillion River Watershed Joint Powers Organization’s Watershed Plan (VRWJPO, 2005, as amended), and the Lower St. Croix Watershed Management Organization’s Watershed Management Plan (LSCWMO, 2005, as amended). Minnesota Statutes 103B.201 states that the purposes of the water management programs required by statute are to: (1)Protect, preserve, and use natural surface and groundwater storage and retention systems. City of Hastings Watershed Management PlanPage 1-1 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc (2)Minimize public capital expenditures needed to correct flooding and water quality problems. (3)Identify and plan for means to effectively protect and improve surface and groundwater quality. (4)Establish more uniform local policies and official controls for surface and groundwater management. (5)Prevent erosion of soil into surface water systems. (6)Promote groundwater recharge. (7)Protect and enhance fish and wildlife habitat and water recreational facilities. (8)Secure the other benefits associated with the proper management of surface and groundwater. The Hastings plan addresses these purposes. Several planning documents have guided the City’s water resource management needs, including the following: City of Hastings Watershed Management Plan, Draft (2000). City of Hastings Drainage Plan South Fringe Area, Addendum to Comprehensive Drainage Plan (1988). City of Hastings Comprehensive Drainage Plan (1980). City of Hastings 1978 Southwest Ponding Basin & Trunk Storm Sewer Study (1978a). City of Hastings 1978 Northwest Ponding Basin & Trunk Storm Sewer Study (1978b). 1.3Regulatory Background and History Along with the purposes and requirements outlined in state statutes and rules, this WMP reflects numerous other water resource-related state and federal mandates that the City must meet. As state and federal laws have changed over the years, the role of the City in water resource management has also changed. The following paragraphs provide the background and history of some of these mandates (references: “Minnesota Environment,” Minnesota Pollution Control Agency (MPCA), Volume 7, Number 1—Summer 2007, the MPCA’s website www.pca.state.mn.us, and the City of Plymouth’s July/August 2007 edition of “Environmental Extra”). In 1945, the Minnesota State Legislature authorized a new state Water Pollution Control Commission because too many communities were dumping raw sewage into lakes and rivers. One of the Commission’s jobs was to encourage communities to build wastewater treatment plants to stop the flow of raw sewage into rivers and lakes. Three years later, in 1948, the United States (U.S.) Congress enacted the Federal Water Pollution Control Act (FWPCA) in response to the threat that polluted water posed to the public health and welfare. City of Hastings Watershed Management PlanPage 1-2 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc In 1967, the Minnesota Legislature created the Minnesota Pollution Control Agency in response to oil spills and other major environmental incidents. Its mission was to protect the air, land, and waters of the state. Five years later, in 1972, the U.S. Congress enacted amendments to the FWPCA to address the growing public awareness and concern for controlling water pollution. This act became known as the Clean Water Act (CWA). Amendments to the CWA in 1977 addressed “point source” facilities, such as municipal sewage plants and industrial facilities. The National Pollutant Discharge Elimination System (NPDES) became the program for regulation of point source pollution. As a “delegated permitting authority,” the MPCA issues combined State Disposal System (SDS) and NPDES stormwater permits. In 1987, the Minnesota Legislature enacted laws to control polluted runoff, broadening attention from “point” source to “nonpoint” source pollution, which is the movement of pollutants from land to water, typically in stormwater or snowmelt runoff from streets, lawns, construction sites, farms, etc. Also in 1987, state regulatory authority for this program was delegated from the U.S. Environmental Protection Agency (EPA) to the MPCA. In 1987, an amendment to the federal Clean Water Act required implementation of a two- phase comprehensive national program to address stormwater runoff. In 1990, the EPA promulgated regulations establishing the Phase I Stormwater Program. The Phase I federal regulations required two general categories of stormwater discharges to be covered under a NPDES stormwater permit: (1) regulated categories of industrial activity including construction activity that disturbs 5 or more acres of land, and (2) municipal separate storm sewer systems (MS4s) serving populations of 100,000 or more (including Minneapolis and St. Paul). In 1994 and 1995, the MPCA promulgated rules to establish the Phase I Stormwater Program at the state level. Under Phase I, Minneapolis and St. Paul obtained individual permits and designed and implemented stormwater programs. By 1999,the Phase II federal regulations were promulgated, which expanded the scope of the NPDES Stormwater Program to include smaller MS4s in urbanized areas, construction activities that disturb between 1 and 5 acres of land, and smaller municipally owned industrial activities. The MPCA then promulgated rules related to the Phase II federal regulations to fulfill federal NPDES delegation responsibilities. The rules establish the NPDES stormwater permit requirements for regulated MS4s, construction, and industrial activities. In 2002, the MPCA began identifying surface water resources that are impaired for their identified uses such as swimming and aquatic habitat. As required by the Clean Water Act, if a water body is included on the impaired waters list, it triggers an analysis called a total maximum daily load (TMDL) study. The TMDL analysis determines the impaired water body’s capacity to assimilate specific pollutants and still meet water quality standards. A TMDL also develops an allocation scheme among the various contributors—point sources, nonpoint sources and natural background—as well as a margin of safety. Section 303(d) of the CWA requires each state to identify and establish priority rankings for waters that do City of Hastings Watershed Management PlanPage 1-3 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc not meet the water quality standards. The list of impaired waters, sometimes called the 303(d) list, is updated by the states every 2 years. Then in 2003, Phase II of the NPDES program began. Phase II is a broader program that includes smaller construction sites, municipally owned or operated industrial activity, and many more municipalities (MS4s). Regulated parties under the Phase II program must develop stormwater pollution prevention plans to address their stormwater discharges, and determine the appropriate pollution prevention practices or “best management practices” to minimize pollution for their specific site. Each of the three permit types—construction, industrial, MS4—has distinct requirements and some regulated parties may require more than one permit. In the same year, the MPCA issued a General Permit for municipalities with populations over 10,000 (MS4 permit), including Hastings. The permit requires cities to comply with six “minimum control measures,” which include public education, public outreach, illicit discharge detection and elimination, construction site stormwater runoff control, post-construction stormwater management, and pollution prevention/good housekeeping measures. Approximately 200 MS4s in Minnesota were mandated by the Phase II federal regulations as requiring NPDES permit coverage; these include municipalities located within the boundaries of an urbanized area. 1.4Need for the Plan The City needed a new watershed management plan to guide Hastings through changes that are anticipated in the next 10 years, including land use changes within the current city limits and within the anticipated annexation areas. The new City plan also addresses existing flooding problems and other stormwater management issues faced by the City as well as meets the requirements of the Vermillion River Watershed Joint Powers Organization (VRWJPO) adopted Watershed Plan, Standards, and Rules and the requirements of the Lower St. Croix Watershed Management Organization (LSCWMO) adopted Watershed Plan and Standards. 1.5Water Resources-Related Agreements The northeastern corner of the City of Hastings is a part of the Lower St. Croix Watershed Management Organization (LSCWMO). As part of the 2005 Joint Powers Agreement between the LSCWMO and Denmark Township, the City of Afton, the City of Cottage Grove, and the City of Hastings, Denmark Township has agreed to take on the City of Hastings’ responsibility to manage and provide funding for the portion of Hastings that falls within the LSCWMO. Since Denmark Township has taken on the water management duties for that portion of Hastings, this plan does not need to be approved by the LSCWMO. A copy of the Joint Powers Agreement (JPA) between the LSCWMO and the City of Hastings is included with this plan as Appendix A. 1.6Plan Organization The Hastings Watershed Management Plan (WMP) sets the course for the City’s management of the water resources and stormwater within the city. The Hastings WMP sets goals and policies for the City and its resources, provides data and other background City of Hastings Watershed Management PlanPage 1-4 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc information, outlines the applicable regulations, assesses city-wide and specific issues, and lists implementation tasks to achieve goals. The WMP also provides information regarding the funding of the implementation program. The WMP is organized into eight major sections, summarized as follows: Section 1.0, Executive Summary, provides basic information about the City’s natural setting and summarizes the highlights of the WMP, including the WMP purpose and scope, goals, policies, and implementation tasks. Section 2.0, Goals and Policies, presents the City’s water resource vision in the form of its goals and policies. Goals are defined for surface water quality, surface water quantity, groundwater, wetlands and habitat, floodplains, open space and recreational areas, land use management, and education. Then the policies, objectives, and actions intended to accomplish these goals are defined. Section 3.0, Hastings Physical Environment, provides technical information describing the surface and subsurface conditions of the city. Most of Section 3.0 presents a city- wide inventory, including land use, climate and precipitation, topography, soils, geology, groundwater, MDNR public waters, wetlands, surface water resource monitoring information, floodplain information, unique features and scenic areas, pollutant sources, and major basins and overall drainage patterns. Section 3.0 also includes a number of maps, such as city-wide maps of land use, MDNR public waters, wetlands, and drainage basins, and maps showing the drainage patterns for each major drainage basin. This section also includes a number of tables, such as precipitation information, and water quality information. Section 4.0, Stormwater System Analysis, presents the results of hydrologic and water quality modeling performed to analyze the City’s systematic needs regarding stormwater quantity and quality management. Section 5.0, Programs and Regulations, is organized to present the state, regional, and local programs and regulations that apply to water resource management in Hastings. A general overview of the Vermillion River Watershed Joint Powers Organization’s and the Lower St. Croix Watershed Management Organization’s programs is also included. This is intended to be a resource for City staff, residents, and developers living and working in Hastings. Section 6.0, Assessment of Problems and Issues, assesses the issues, challenges, and problems the City faces in managing stormwater on behalf of the public. City-wide and specific issues are presented and discussed. This section examines water quality, stormwater runoff rates and volumes (water quantity), erosion and sediment control, as well as the adequacy of existing City programs. A summary table of the City’s stormwater issues is included at the end of this section. Section 7.0, Opportunities and Implementation, describes the significant components of the City’s WMP implementation program, including its NPDES Phase II MS4 permit, operation and maintenance of its stormwater system, education and public involvement, funding, ordinance implementation and official controls, implementation priorities, and a detailed implementation plan. This section also discusses the opportunities the City will pursue through its implementation plan. Section 8.0, References, lists the documents and other references used in the preparation of the WMP. City of Hastings Watershed Management PlanPage 1-5 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc 1.7Plan Update and Amendment Procedures This Watershed Management Plan (WMP) will guide the City of Hastings’ activities through 2030, or until superseded by adoption and approval of a subsequent WMP. The City will begin the process of updating this plan 1 to 2 years before its expiration date. The updated plan will meet the requirements of the applicable Minnesota laws and rules, the VRWJPO, and the LSCWMO. The City may revise this WMP through an amendment prior to updating the plan, if either minor changes are required, or if problems arise that are not addressed in the WMP. However, this WMP remains in full force and effect until an updated WMP is approved by the VRWJPO and the LSCWMO. Any significant changes to this WMP must be approved by the VRWJPO and LSCWMO. Minor changes to this WMP will not require WMO approval and can be made by City staff, but must be supplied to the WMOs for their information. The City considers minor changes those that do not modify the goals, policies, or commitments identified in the WMP. Examples of minor changes include: Inclusion of new or corrected hydrologic modeling results and mapping, as long as the changes do not significantly affect the rate or quality of intercommunity stormwater runoff. Inclusion of new/updated water quality monitoring data. Minor changes to the City’s implementation program, such as added projects, schedule changes, and revised cost estimates, as long as there are no intercommunity impacts of such changes and the changes stem from the goals and policies in the WMP. If it is unclear whether a proposed WMP change is minor or not, the City will bring the issue to the VRWJPO and LSCWMO for their determination. The City’s amendment procedure for significant changes to the WMP is as follows: (1)City staff preparation and review of WMP amendment. (2)City council consideration of WMP amendment. The City council would either give conditional approval of the amendment and submit it for WMO review and approval, or decide not to move forward with the amendment. If the City council decides to submit the amendment for WMO approval, the council would also need to determine when/if a public hearing or other public process should be undertaken. (3)Submittal of proposed WMP amendment to the VRWJPO and LSCWMO for review and approval. The City must also submit the proposed WMP amendment to the Metropolitan Council and Dakota County. The review process for a WMP amendment is the same as for the original WMP. The WMOs have 60 days to review and comment on the proposed WMP amendment. (4)Upon approval by the WMO of the WMP amendment, the City council then approves adoption of WMP amendment. City of Hastings Watershed Management PlanPage 1-6 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 1.doc City of Hastings Watershed Management Plan Section 2: Goals and Policies Table of Contents 2.0Goals and Policies.........................................................................................2-1 2.1Introduction..........................................................................................2-1 2.2Surface Water Quality..............................................................................2-2 2.3Surface Water Quantity............................................................................2-6 2.4Groundwater.........................................................................................2-8 2.5Wetlands and Habitat..............................................................................2-10 2.6Floodplains..........................................................................................2-13 2.7Open Space and Recreational Areas.............................................................2-15 2.8Land Use Management.............................................................................2-16 2.9Education............................................................................................2-17 City of Hastings Watershed Management PlanPage 2-i P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc List of Tables Table 2-1Recommended Best Management Practices According to Watershed Type.........2-19 City of Hastings Watershed Management PlanPage 2-ii P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc 2.0Goals and Policies 2.1Introduction This section outlines the goals that form the basis for stormwater management within the City of Hastings. Goals are defined for surface water quality, surface water quantity, groundwater, wetlands and habitat, floodplains, open space and recreational areas, land use management, and education. The policies, objectives, and actions intended to accomplish these goals are presented in the following section. The City of Hastings’ reasons for developing this plan were to: Update the previous watershed management plan to meet the requirements of the Vermillion River Watershed Joint Powers Organization (VRWJPO) Plan, Rules, and Standards, and the Lower St. Croix Watershed Management Organization (LSCWMO) Plan. Reflect changes in land use and the City’s expansion. Address and prevent flooding problems as development occurs in the city’s annexation areas (existing and future). Address existing isolated flooding problems in the city. Determine if any of the city’s older stormwater systems need upgrading. Incorporate water quality needs. Incorporate the City’s NPDES Phase II MS4 Permit and SWPPP. The goals and policies contained in this plan address the problems and issues presented in Section 6 and are consistent with the goals of the VRWJPO and the LSCWMO, while meeting the more specific and changing needs of the City. These goals and policies provide for future development and redevelopment while minimizing negative impacts to surface water and enhancing the environment. A goal is defined herein as the desired end toward which the city’s surface water management efforts are directed. This plan identifies several specific goals upon which the city bases its water resources planning and management functions. The goals of this plan were established in accordance with the guidelines contained in Minnesota Statutes 103B and Minnesota Rules 8410. Each goal has several corresponding policies that provide the means for achieving the established goal. The policies provide the methodology with which to achieve and maintain proper surface water management. Each goal is defined by more detailed objectives and a list of actions that the City will undertake in order to achieve the objectives and overall goal. City of Hastings Watershed Management PlanPage 2-1 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc 2.2Surface Water Quality Preserve and enhance surface water quality of lakes, wetlands, and watercourses in the City of Hastings and improve the quality of surface water runoff reaching the Goal Vermillion and Mississippi Rivers. 2.2.1 The City of Hastings will be responsible for effectively managing its stormwater. The City of Hastings also assumes responsibility for enforcing water quality and stormwater management standards. 2.2.2 The City of Hastings supports and promotes a reduction in runoff rates resulting from new development; expectations will be set forth in the City’s stormwater ordinance. 2.2.3 The City of Hastings will use existing natural retention and detention areas for stormwater management to maintain or improve existing water quality to the extent possible. 2.2.4The City will remove accumulated sediment from water quality treatment ponds prior to reaching 50 percent of the storage area’s capacity. 2.2.5 The City of Hastings supports land use planning, policies and controls that maintain sustainable, high-quality surface water resources. 2.2.6 The City of Hastings intends to meet or exceed all water related regulations that apply as promulgated by the Federal Government, the State of Minnesota, counties, watershed management organizations, and the Metropolitan Council. 2.2.7 The City of Hastings will seek to improve the quality of water bodies located within the city and included on the MPCA impaired waters (303d) list, with the ultimate goal of removal from the impaired waters list. Surface Water Quality Objectives Maintain water quality of lakes, streams, and wetlands that promote O 1 – BJECTIVE designated community uses Action 1 –The City of Hastings will implement all aspects of its NPDES Phase II MS4 permit Stormwater Pollution Prevention Program (SWPPP) Action 2 – The City will require development to comply with the conditions and policies of the City’s SWPPP Action 3 – The City will require development to comply with the NPDES Phase II Construction Permit as well as follow all best management practices for erosion and sedimentation control specified in the MPCA publication Protecting Water Quality in Urban Areas (MPCA, 2005c) and the Minnesota Stormwater Manual (MPCA, 2005b) Action 4 – The City will require projects to comply with the City's erosion and sediment control requirements and construction guidelines (Public Works Design Manual and Builders Handbook, see Appendix C) City of Hastings Watershed Management PlanPage 2-2 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 5 – The City will encourage implementation of BMPs beyond the minimum required Action 6 – The City will implement buffer requirements for wetlands, streams and water courses that are consistent with VRWJPO standards and rules (see Appendix F) for areas south of the Mississippi River and compliant with LSCWMO rules for areas north of the Mississippi River (see Appendix G) Action 7 – The City will require stormwater facilities located within the LSCWMO to utilize skimming devices to remove floatable pollutants prior to discharge Action 8 – The City will continue to require pre-settlement of stormwater prior to discharge to natural or improved waterbodies Action 9 – The City will continue to enforce its Shoreland Ordinance (City Code Chapter 153, see Appendix C) Action 10 – The City will request that adjacent townships, VRWJPO, and Dakota County give the City the opportunity to comment on the treatment of stormwater runoff in areas that develop outside the city limits yet discharge to the City’s stormwater system Action 11 – The City will work with the MPCA and other agencies to support the development and implementation of Total Maximum Daily Load (TMDL) studies on all impaired water bodies, including, but not limited to those included on the current impaired waters (303d) list Action 12 – The City will determine appropriate responsibilities in implementing load reduction measures identified in TMDL studies Action 13 – The City will continue water quality modeling of major watersheds and diagnose potential problems Action 14 – The City will use water quality modeling to identify areas that may require monitoring or additional treatment Action 15 – The City will maintain an aggressive program of street sweeping and vacuum cleaning of settlement devices and manholes Action 16 – The City will continue its water quality education programs aimed at civic groups, schools, and other community groups Continue the water quality monitoring program for the City of Hastings O 2 – BJECTIVE Action 1 – The City will support the water quality monitoring programs in the city Action 2 – The City will make water quality monitoring data available via its website or other means and summarize data for public information purposes City of Hastings Watershed Management PlanPage 2-3 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Continue management programs for Lake Rebecca and Lake Isabel O 3 – BJECTIVE Action 1 – The City will evaluate the performance of the three sediment control dikes in a ravine leading to Lake Rebecca and consider methods to reduce the size of particles retained by the dikes Action 2 – The City will support (via staff assistance) the VRWJPO, the Dakota County Soil and Water Conservation District (SWCD), federal, state, and other programs that provide cost share funds for lake shore restoration projects undertaken by landowners Action 3 – The City will cooperate with other agencies to monitor lakes, including participation in citizen volunteer monitoring efforts such as the Metropolitan Council’s Citizen Assisted Monitoring Program (CAMP) and the MPCA’s Citizen Lake Monitoring Program (CLMP) Minimize water quality impacts from land-disturbing activities, O 4 – BJECTIVE including new development and redevelopment (urban/rural), road construction, and rural uses Action 1 – The City will require development to comply with all aspects of Hastings’ NPDES Phase II MS4 permit SWPPP Action 2 – The City will require development to comply with the General NPDES Phase II Construction Stormwater Permit as well as all best management practices for erosion and sedimentation control as specified in the MPCA publications Protecting Water Quality in Urban Areas (MPCA, 2005c) and the Minnesota Stormwater Manual (MPCA, 2005b) Action 3 – The City will require compliance with the City's Stormwater Management ordinance (City Code Chapter 152, seeAppendix C) and erosion and sediment control requirements (Public Works Design Manual,see Appendix C) Action 4 – The City will continue to protect existing storm drain inlets and conveyance systems from erosion and sedimentation, consistent with the standards of this plan, the VRWJPO (see Appendix F), and General NPDES Phase II Construction Stormwater Permit Action 5 – The City will require all projects that will disturb more than one acre of land to obtain a General NPDES Phase II Construction Stormwater Permit from the MPCA Action 6 – The City will require new development and re-development to be compliant with the VRWJPO Stormwater Management Standards, Construction Erosion Control, Post Construction Water Quality Criteria, and Runoff Temperature Control Criteria, if applicable (see Appendix F) Action 7 – The City will require new development and redevelopment located north of the Mississippi River to be compliant with the LSCWMO requirements for rate and volume control, and erosion and sediment control (seeAppendix G) City of Hastings Watershed Management PlanPage 2-4 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 8 – The City will require that temporary and permanent stormwater basins incorporate recommendations from the Nationwide Urban Runoff Program (NURP) or approved alternative Action 9 – The City will stabilize and restore eroded drainageways and continue to monitor restored drainageways for erosion problems Action 10 – The City will implement buffer requirements for wetlands, streams and water courses that are consistent with VRWJPO standards and rules (see Appendix F) for areas south of the Mississippi River and compliant with LSCWMO rules for areas of the city north of the Mississippi River (see Appendix G) Action 11 – The City will preserve and enhance natural vegetation to the greatest practical extent Action 12 – The City will encourage implementation of BMPs beyond the minimum required Ensure stormwater management systems are maintained while O 5 – BJECTIVE minimizing the total cost of the stormwater system (construction plus maintenance) Action 1 – The City will continue to use higher-level hydrograph models with a variety of storm durations and recurrence intervals to optimize design Action 2 – The City will emphasize development of stormwater storage to keep peak rates at or below existing rates of runoff to improve water quality Action 3 – The City will construct regional basins to the maximum extent possible to minimize the cost of basin maintenance Action 4 – The City will look for opportunities to provide additional water quality treatment by modifying traditional stormwater detention ponds by deepening or adding/changing outlet structures Action 5 – The City will establish and implement stormwater management system maintenance standards Action 6 – The City will implement all aspects of Hastings’ NPDES Phase II MS4 permit SWPPP Action 7 – The City will continue its inspection program for identification of maintenance problems and illicit discharge detection Continue to meet or exceed all water-related regulations that apply as O 6 – BJECTIVE promulgated by the federal government, the State of Minnesota, Dakota County, Washington County, the Vermillion River Watershed Joint Powers Organization, the Lower St. Croix Watershed Management Organization, and the Metropolitan Council Action 1 – The City will involve the appropriate agencies in the development of this plan Action 2 – The City will adopt and implement this plan City of Hastings Watershed Management PlanPage 2-5 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 3 – The City will update its city ordinances where necessary to meet current requirements of the Federal Government, the State of Minnesota, counties, watershed management organizations, and the Metropolitan Council Action 4 – The City will implement all aspects of Hastings’ NPDES Phase II MS4 permit SWPPP Action 5 – The City will work with the MPCA and other agencies to support the development and implementation of Total Maximum Daily Load (TMDL) studies on all impaired water bodies, including, but not limited to those included on the current impaired waters (303d) list Action 6 – The City will assess the adequacy of its SWPPP to address applicable TMDLs and will revise its SWPPP if it does not meet the applicable requirements, schedules, and objectives of each TMDL Action 7 – The City will use a water quality model (e.g. P8) to track the load reduction of select contaminants that is achieved by implemented BMPs 2.3Surface Water Quantity Manage the rate and volume of runoff entering rivers, streams, lakes, and Goal wetlands within the City of Hastings to prevent flooding, protect public health and safety, and minimize capital expenditures. 2.3.1The City will promote a reduction in runoff rates and volumes; expectations will be set forth in the City’s stormwater ordinance. 2.3.2The City will encourage the use of existing natural retention and detention areas for stormwater management to minimize flow rates. 2.3.3The City will manage its stormwater to minimize erosion. 2.3.4The City will allow outlets from landlocked basins only when such outlets are consistent with State and federal regulations, and the downstream impacts, riparian impacts, and habitat impacts of such outlets have been analyzed and no detrimental impacts result. 2.3.5 The City will design and evaluate its storm sewer system based on the critical 10-year frequency precipitation event, unless specified otherwise. The City will design its major stormwater facilities for the critical 100-year frequency precipitation event. City of Hastings Watershed Management PlanPage 2-6 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Surface Water Quantity Objectives Minimize downstream impacts of runoff from land-disturbing activities O 1 – BJECTIVE including new development and redevelopment, road construction, and rural uses Action 1 – The City will meet VRWJPO requirements for discharge limitations (see Appendix F) as well as LSCWMO requirements for area of the city north of the Mississippi River(see Appendix G) Action 2 – The City will require developers to comply with the City's Stormwater Management ordinance (City Code Chapter 152, seeAppendix C), erosion and sediment control requirements (Public Works Design Manual, seeAppendix C), and minimum storage volumes indicated in this plan Action 3 – The City will request that adjacent townships, VRWJPO, and Dakota County give the City the opportunity to comment on necessary flood controls in areas that develop outside the city, yet discharge to the City’s stormwater system Action 4 – The City will continue to determine the impacts of any proposed development on flowrates and flood elevations Action 5 –The City will secure easements over floodplains, detention areas, wetlands, ditches, and all other parts of the stormwater system for new developments and redevelopments Action 6 – The City will require new development and re-development to be compliant with the VRWJPO Stormwater Management Rules, Construction Erosion Control Criteria, and Post Construction Water Quality Criteria (see Appendix F) as well as LSCWMO stormwater rules for areas north of the Mississippi River (see Appendix G) Action 7 – The City will continue to require collection of plan review escrow fees to cover the costs of services and to provide oversight and guidance in review of developers’ designs and plans for onsite stormwater management practices to meet City of Hastings’ standards Assist in mitigating and reducing the impact of past increases in O 2 – BJECTIVE stormwater discharge on downstream conveyance systems Action 1 – The City will identify stream corridor reaches for streambank erosion reduction projects, and restore damaged stream banks at priority locations as funding allows, taking advantage of partnerships and cost-sharing whenever possible Action 2 – The City will support (via staff assistance) the Dakota County Soil and Water Conservation District (SWCD), federal, state, and local programs that provide cost share funds for streambank restoration projects undertaken by landowners Action 3 – The City will seek opportunities to retrofit existing developments with low- impact development techniques, in partnership with other units of government City of Hastings Watershed Management PlanPage 2-7 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 4 – The City will seek opportunities to retrofit sites under re-development with low-impact development techniques as funding allows Action 5 – The City will preserve and increase (where necessary and feasible) the storage capacity of the existing stormwater system as funding allows Action 6 – The City will continue to require the incorporation of emergency overflow structures (i.e. swales, spillways) into pond outlet structures to prevent undesired flooding resulting from storms larger than the 100-year (one percent) event or plugged outlet conditions Action 7 – The City will identify trapped street depressions and prioritize street sweeping and catch basin cleaning in those areas Action 8 – The City will attempt to provide drainage facilities in areas of trapped street depressions through its reconstruction program O 3 – Address gully erosion problems in the City of Hastings BJECTIVE Action– The City will work to address identified gully erosion problems in the City 2.4Groundwater Protect groundwater quality and quantity to preserve it for sustainable and Goal beneficial purposes 2.4.1The City will not compromise groundwater quality to manage surface water. The City will design holding ponds, wetlands and other stormwater storage and treatment areas to protect groundwater. 2.4.2 The City will work to maintain or improve the current level of water quality so that the municipal water supply will continue to meet or exceed all applicable state and federal water quality standards 2.4.3The City will promote infiltration of stormwater and groundwater recharge where it is feasible and does not pose a threat to groundwater quality. Groundwater Objectives Protect groundwater quality and quantity O 1 – BJECTIVE Action 1 – The City will continue to implement the City of Hastings Wellhead Protection Plan and utilize the guidance contained in the Minnesota Department of Health’s Evaluating Proposed Stormwater Infiltration Projects in Vulnerable Wellhead Protection Areas (MDH, 2007) and the MPCA’s Minnesota Stormwater Manual (MPCA, 2005b) Action 2 – The City will continue to discourage infiltration within DWSMA, areas with karst features, shallow groundwater or bedrock, soils with low infiltration capacity, transportation corridors, or other potential stormwater hotspots that do not have City of Hastings Watershed Management PlanPage 2-8 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc adequate emergency procedures for containment of spills and pretreatment of stormwater runoff; Possible exceptions to this policy include localized infiltration practices, such as runoff from individual lots that do not receive drainage from the street Action 3 – The City will encourage the proper sealing of all unused wells in the city within the Drinking Water Supply Managment Area (DWSMA) according to the Minnesota Department of Health Well Code Action 4 – The City will work with the appropriate federal, state, or local agencies to manage agricultural land use to reduce nitrate concentrations in the source water aquifer within the DWSMA Action 5 – The City will use the Dakota County Well Management database in plan and permit reviews, and provide education (e.g. landowner outreach) in coordination with the City’s Wellhead Protection Program(see Appendix D) Action 6 – The City will use collected data, identify needed research, and seek partnerships with other entities to develop and implement collaborative groundwater projects and programs (e.g. Hastings Area Nitrate Study future phases) Action 7 – The City will annually request information on the location of new registered storage tanks in Hastings and the status of registered storage tanks and leaking underground storage tanks (LUST) cleanups in Hastings Action 8 – The City will encourage groundwater recharge and protect recharge areas from potential sources of contamination Action 9 – The City will encourage the use of grassed waterways to maximize infiltration where not detrimental to groundwater supplies Action 10 – The City will encourage the proper handling of chemicals and waste as well as the proper operation of storage tanks Action 11 – The City will support the identification of currently un-located wells that are not currently listed in the State or County database Avoid reductions in the base flow of the Vermillion River and its O 2 – BJECTIVE tributaries, and reductions in “normal” water levels of lakes and wetlands, due to increased appropriations Action 1 – The City will consider the water quality and water quantity impacts of watershed diversions to avoid negative impacts on downstream waterbodies Action 2 – The City will collaborate with other agencies to develop a water conservation guidance document City of Hastings Watershed Management PlanPage 2-9 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Eliminate discharges of fecal coliform bacteria and minimize O 3 – BJECTIVE discharges of nitrate and other pollutants to groundwater and waters of the surface City of Hastings Action 1 – The City will cooperate with Dakota County’s efforts to inventory failing and non-compliant septic systems and jointly prioritize areas for septic system upgrades Action 2 – The City will continue to require connection to the City’s sanitary sewer system when available Action 3 – The City will assess the adequacy of its SWPPP to address applicable TMDLs and will revise its SWPPP if it does not meet the applicable requirements, schedules, and objectives of the TMDL Action 4 – The City will consider alternatives to upgrade non-compliant septic systems Support and assist in groundwater research, regulation, and education O 4 – BJECTIVE Action 1 – The City will collaborate with State and local agencies to assist in data collection efforts and will share City data for use in research and to develop targeted educational messages Action 2 – The City will cooperate with the Minnesota Department of Health (MDH), Dakota County and other agencies to periodically assess the vulnerability of groundwater used for drinking water supplies Action 3 – The City will promote awareness of groundwater resource issues through public education and information programs Action 4 – The City will continue to distribute the City’s Drinking Water Consumer Confidence Report Action 5 – The City will periodically review the status of various permits associated with potential contamination sources to allow timely recognition of potential problems that may affect the municipal water supply 2.5Wetlands and Habitat Maintain and enhance, where possible, the functions and values of existing wetlands and habitats within the city. Goals Promote the restoration and/or creation of wetlands. 2.5.1The City of Hastings will work to achieve no net loss of wetland quantity, quality, and biological diversity. 2.5.2The City will require that wetland replacements provide equal or greater functions and values at the replacement ratio dictated by the Wetland Conservation Act. 2.5.3The City will require all developments and land-disturbing activities to avoid direct or indirect wetland disturbance, in accordance with state and City of Hastings Watershed Management PlanPage 2-10 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc federal requirements. 2.5.4The City will require buffers, acting as filter strips, around every wetland based on the VRWJPO requirements (see Appendix F) for areas south of the Mississippi River and LSCWMO rules for areas of the city north of the Mississippi River (see Appendix G). 2.5.5The City will protect wetlands from chemical, physical, biological, or hydrological changes so as to prevent significant adverse impacts to the following designated wetland uses: maintaining biological diversity, preserving wildlife habitat, providing recreational opportunities, erosion control, groundwater recharge, low flow augmentation, stormwater retention, stream sedimentation, and aesthetic enjoyment, as specified in Minnesota Rules 7050. 2.5.6The City will avoid fragmentation of natural areas and corridors when feasible. 2.5.7The City will avoid impacts to locally and regionally significant natural areas when feasible or mitigate if unavoidable. 2.5.8The City will use mapping of high priority natural areas (identified through the land cover mapping done for the Dakota County Farmland & Natural Areas Program, the Dakota County Biological Survey and other inventories) to assist in evaluating development proposals. Wetlands and Habitat Objectives Protect existing wetlands and fish and wildlife habitat areas and O 1 – BJECTIVE promote the development of additional habitat areas Action 1 – The City will act as the Local Governmental Unit enforcing the Minnesota Wetland Conservation Act Action 2 – The City will inform potential developers of the MDNR protected waters and Corps of Engineers Section 404 permit programs Action 3 – The City will comply with VRWJPO Wetland Alteration Standards and Criteria and VRWJPO Wetland Buffer Standards and Criteria (see Appendix F)as well as LSCWMO Wetland Requirements(see Appendix G) Action 4 – The City will collaborate with other agencies and organizations to develop or enhance wildlife habitat corridors that connect open space, stream corridors, lake buffers, wetland buffers and stormwater management facilities, as funding allows Action 5 – The City will collaborate with conservation agencies and other organizations to supplement their fish and wildlife habitat protection and enhancement efforts and programs, as funding allows Action 6 – The City will enhance or provide new habitat as part of wetland modification, stormwater facility construction, or other appropriate projects, as funding allows City of Hastings Watershed Management PlanPage 2-11 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 7 – The City will require the determination of wetland functions and values on an individual basis using the Minnesota Routine Assessment Methodology (MnRAM) for Evaluating Wetland Functions, version 3.0 (as updated), or an equivalent methodology Action 8 – The City will continue to require pre-settlement of stormwater runoff prior to discharge to wetlands Action 9 – The City will continue to enforce its Shorelands Ordinance (City Code Chapter 153, seeAppendix C) Identify and pursue wetland restoration opportunities within the City O 2 – BJECTIVE of Hastings Action1 – The City will identify priority wetland restoration projects and opportunities to enhance existing wetlands, as funding allows Protect sensitive habitats communities, and rare species O 3 – and BJECTIVE Action 1 – The City will cooperate with Dakota County and the Dakota County Soil and Water Conservation District to identify, rank, and map disturbed shoreline areas at lakes and streams Action 2 – The City will review projects and plans with an awareness of sensitive habitats and communities, and rare species Action 3 – The City will minimize water level fluctuation (bounce) in wetlands to prevent adverse habitat impacts Action 4 – The City will encourage alternative landscaping designs that increase beneficial habitat and wildlife uses and decrease detrimental wildlife uses (including beaver dams and goose overabundance) Action 5 – The City will require local water management plans and wetland plans to include known sensitive habitats and communities, and rare species, and take reasonable measures to avoid impacts to these areas Assist in public education regarding the fish and wildlife in the O 4 – efforts BJECTIVE City Action 1 – The City will assist the VRWJPO and other agencies with development and distribution of educational materials or the City will support programs that provide information on the fish and wildlife resources of the City of Hastings Action 2 – The City will continue to participate in the Wetland Health Evaluation Program (WHEP), as funding allows City of Hastings Watershed Management PlanPage 2-12 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc 2.6Floodplains Goal Manage and protect the floodplains of the City from encroachment. 2.6.1The City will protect the natural function of the floodplain as a floodwater storage area 2.6.2The City will work to maintain no net loss of floodplain storage. 2.6.3The City will manage floodplains to maintain critical 100-year flood storage volumes. 2.6.4The City will work to restrict construction of new structures to sites above flood prone areas. 2.6.5The City will maintain floodplain zoning regulations that are consistent with Dakota County water resource plans and ordinances. 2.6.6The City will maximize upstream floodwater storage. 2.6.7The City will remove accumulated sediment from flood storage facilities prior to reaching 50 percent of the storage area’s capacity. 2.6.8The City will increase infiltration in appropriate floodplain areas through increased vegetated areas and reduced impervious surfaces. Floodplain Objectives Reduce potential for flood damage to and businesses to O 1 – homes BJECTIVE minimum practical level Action 1 – The City will continue to enforce its floodplain ordinance and expand its scope to include all major waterways, public waters, public waters wetlands, and stormwater ponds (City Code Chapter 151, seeAppendix C) Action 2 – The City will require a floodplain use permit for any development, land alteration, or land use change in the floodplain Action 3 – The City will identify the 100-year floodplains for all water bodies Action 4 – The City will ensure consistency with the County’s revised FEMA floodplain maps Action 5 – The City will update its floodplain ordinance and establish the following minimum building elevations (consistent with VRWJPO and LSCWMO rules) for structures allowed within the floodplain: At least 1 foot of freeboard between the lowest floor and the 100-year flood level for structures allowed in the floodplain of all major waterways, public waters, public waters wetlands, and other wetlands City of Hastings Watershed Management PlanPage 2-13 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc At least 2 feet of freeboard between the lowest opening and the 100-year flood level for structures surrounding stormwater ponds that are not classified as public waters, public waters wetlands, or other wetlands At least 2 feet of freeboard between the lowest opening and adjacent drainage swales Action 6 – The City will design stormwater facilities to provide adequate level of service for the 10-year storm event and adequate level of protection for the 100-yr storm event; pipes will be designed based on the 10-year event and ponds will be designed for the 100- year event Action 7 – The City will allow local streets and parking areas to overtop by no more than one foot measured at its deepest point (e.g. the gutter) in the 100-year storm Action 8 – Where existing housing has the identified potential for flood damage, the City will propose redesign of storm drainage systems to eliminate flooding in the 100-year storm; improvements will typically be done at time of street reconstruction projects Action 9 – The City will seek to minimize flood damage adjacent to landlocked basins by allowing outlets that are consistent with State and federal regulations and have no detrimental downstream impacts, riparian impacts, or habitat impacts will result. Identify and protect floodplains O 2 – BJECTIVE Action 1 – The City will continue to participate in the National Flood Insurance Program Action 2 – The City will cooperate and coordinate with the Dakota County’s FEMA floodplain mapping updates as needed Action 3 – The City will obtain flood and drainage easements and easements for maintenance access and over emergency overflow routes during development and/or building permit processes Action 4 – The City will assist the VRWJPO, and other agencies with development and distribution of educational materials or support programs that provide information regarding floodplain locations, protection, and floodplain land use and land alteration restrictions Limit floodplain alterations in order to obtain "no net loss" of O 3 – BJECTIVE floodplain storage, and include the preservation, restoration and management of floodplain wetlands Action 1 – The City will require compensatory storage for filling or structures within the floodplain Action 2 – The City will continue to enforce its floodplain ordinance (City Code Chapter 151, see Appendix C) City of Hastings Watershed Management PlanPage 2-14 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Adopt shoreland and floodplain ordinances that are compatible with O 4 – BJECTIVE existing county and state ordinances, VRWJPO standards (see Appendix F), and LSCWMO standards (seeAppendix G) Action 1 – The City will review the status of its floodplain and shoreland ordinances and will make changes as needed 2.7Open Space and Recreational Areas Develop or improve recreational, fish and wildlife, and open space areas and Goal accessibility in conjunction with water quality improvement projects 2.7.1The City will discourage recreational uses of waterbodies that are a threat to human health. 2.7.2The City will avoid or mitigate impacts to regionally and locally important natural areas. 2.7.3The City will avoid or minimize fragmenting natural areas and natural/wildlife corridors. 2.7.4The City will create and preserve navigational and wading access to public waters, where appropriate. 2.7.5The City will preserve, restore, and enhance natural areas, shoreland and wetland environments wherever possible. 2.7.6The City will consider the use of native vegetation in local government projects and private development open spaces. 2.7.7The City will connect and enhance existing open spaces, outdoor recreational amenities, and cultural resources whenever possible. 2.7.8The City will promote appropriate open spaces uses in wellhead protection areas and implement BMPs to reduce nitrogen runoff in city parks and recreational areas within the DWSMA. 2.7.9The City will support efforts to create a continuous trail system along the Vermillion River and its major tributaries. Open Space and Recreational Area Objectives Preserve and enhance natural recreational areas O 1 – and BJECTIVE Action 1 – Avoid or mitigate impacts to regionally and locally important natural areas Action 2 – Cooperate with other government units to complete habitat and recreational corridor connections (trails and greenways) Action 3 – Encourage alternative landscape designs that: City of Hastings Watershed Management PlanPage 2-15 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Increase beneficial habitat, wildlife, and recreational uses; promote infiltration and vegetative water uses Decrease detrimental wildlife uses (such as beaver dams and goose overabundance) which may damage water control facilities, shoreline vegetation, water quality, or recreational facilities Enhance open space and recreational opportunities in conjunction with O 2 – BJECTIVE water quality improvements Action 1 – The City will consider the above Policies 2.7.1 - 2.7.9 when reviewing development proposals Action 2 – The City will review and revise its ordinances if needed for consistency with the above Policies 2.7.1 - 2.7.9 Maintain natural stream corridor and lake shoreline qualities for O 3 – BJECTIVE recreational users and local residents. Action 1 – The City will collaborate with agency, non-profit, and volunteer groups for river cleanup activities Action 2 – The City will maintain and enforce shoreland and floodplain ordinances that are compatible with existing county and state ordinances, VRWJPO standards (see Appendix F), and LSCWMO requirements (see Appendix G) Partner with others to develop a plan to improve access to public O 4 – BJECTIVE waters, while avoiding impacts of over-use or conflicting uses Action 1 – The City will participate in VRWJPO activities regarding river corridor access issues 2.8Land Use Management Protect and conserve water resources by promoting sustainable growth, Goal integrated land use and land use planning, and water management resource 2.8.1The City will use the presence of environmentally sensitive natural resource areas to guide land use management decisions. 2.8.2The City will consider the impacts of land disturbing activities on water resources, including cumulative impacts, for each proposed activity before the activity occurs. 2.8.3The City will require stormwater best management practices be implemented as part of the development approval process. City of Hastings Watershed Management PlanPage 2-16 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Land Use Management Objectives Require land disturbing activities, including new development and O 1 – BJECTIVE redevelopment, road construction and other uses within the City of Hastings to address impacts on water resources, including cumulative impacts Action 1 – The City will continue to require development plans to consider impacts on local natural resources and corresponding receiving waters and comply with the City’s stormwater management ordinance and SWPPP Action 2 – The City will update its ordinances where necessary to meet the current requirements of the Federal Government, the State of Minnesota, counties, watershed management organizations, and the Metropolitan Council. Action 3 – When redevelopment occurs, the City will look for opportunities to provide additional stormwater quality treatment Action 4 – The City will avoid impacts to locally and regionally significant natural areas when feasible or mitigate if unavoidable Action 5 – The City will enhance natural vegetation to the greatest practical extent Action 6 – The City will determine the impacts of any proposed land use/zoning changes on flowrates and flood elevations 2.9Education Offer programs, educational opportunities and information that facilitate an Goal understanding of water resource issues in the City of Hastings 2.9.1The City of Hastings will provide support where appropriate, for the development and distribution of educational materials and assist other agencies’ efforts. Education Objectives Develop information and data for educational and other purposes O 1 – BJECTIVE Action 1 – The City will continue to participate in water monitoring programs Action 2 – The City will collaborate with other agencies toward expanding and improving the data available Provide opportunities for community involvement and access to O 2 – BJECTIVE information Action 1 – The City will continue to support and facilitate existing volunteer programs in Hastings including the Citizen Assisted Monitoring Program (CAMP), the Wetland Health Evaluation Project (WHEP), and the Vermillion River Watch program City of Hastings Watershed Management PlanPage 2-17 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Action 2 – The City will seek new opportunities for collaboration with volunteer groups Action 3 – The City will continue to distribute information through presentations, written materials, Hastings’s local access TV channel, and via the Hastings web site at http://www.ci.hastings.mn.us Action 4 – The City will develop educational materials that target public awareness of topics such as buffer desirability, illicit discharge to storm sewers, wetlands, native vegetation, wildlife habitat, litter control, pet wastes, leaf collection, etc. Action 5 – The City will encourage residents to use phosphorus-free fertilizers and discourage the use of pesticides and herbicides City of Hastings Watershed Management PlanPage 2-18 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc Table 2-1 Recommended Best Management Practices According to Watershed Type Watershed Type No Outlet - Pond Depths Pond Depths Pond Depths Direct Best Management Practice Landlocked >4 ft 1 ft to 4 ft <1 ft Discharge Retrofit dry ponds to wet detention X ponds Retrofit dry ponds to constructed X water quality wetlands Retrofit dry ponds to extended X detention basins Construct sedimentation XX (pretreatment) basins, when opportunity arises Create additional water quality storage X to meet NURP standards Perform stormwater system XXXXX maintenance in accordance with Table 7-4 Install “Stormceptors” or other X prefabricated stormwater treatment systems Prioritize street sweeping XXXXX Construct skimmers to prevent XXX downstream discharge of oil and floatables Construct filter strips/grassed swales X Increase opportunities for infiltration XXXXX Review and inspect construction XXXXX erosion control measures Stabilize slopes and implement other XXXXX permanent erosion/sediment controls Develop and implement education XXXXX program emphasizing good housekeeping practices Provide vegetative buffers around XXXXX ponds, streams, and wetlands “Good housekeeping practices” include: fertilizer and chemical management, lawn and garden care guidelines, litter control, control of illegal dumping/illicit discharges, pet waste management, vacant lot cleanup, recycling programs, etc. City of Hastings Watershed Management PlanPage 2-19 P:\Mpls\23 MN\19\2319A64 Hastings Water Management\WorkFiles\DraftPlan\Submittal\Oct2008\Hastings WMP Section 2.doc