Best Practice Action Detail

Design guidelines for residents wishing to install a rain garden are available on the City website. The Stormwater Management Ordinance (Section 4.31 of City Code) requires permits for any development activities that will disturb or remove soils and/or vegetation. Projects must meet the standards set by the City and, depending on location, the standards of the Bassett Creek Watershed Management Commission (BCWMC) or the Minnehaha Creek Watershed District. Requirements are included for the construction of native buffers and stormwater management facilities. Stormwater control techniques including infiltration, evapotranspiration, reuse/harvesting, conservation design, urban forestry and green roofs are given preference as design options for those seeking a permit.
The lawn maintenance ordinance (Section 10.51) allows residents to fill out a native vegetation permit so they may plant large areas of native vegetation as an alternative to traditional landscaping. Guidelines for reduced salt use during icy months are on the City website and have been printed in winter editions of the newsletter in the past. The Planned Unit Development ordinance includes “Green Roofs” and “Enhanced Stormwater Management” as two out of 20 public amenities that may be included in applications in order to gain approval.
Rain gardens have been planted outside City Hall and buffers have been planted around ponds in Brookview golf course. In 2017, the City and the BCWMC enhanced the treatment of stormwater flowing through Honeywell Pond prior to its discharge into Bassett Creek and installed a stormwater harvesting system that will help irrigate the Sandburg Athletic Complex. Other advanced stormwater management techniques are implemented in smaller street projects as opportunities arise.
City staff uses Atlas 14 precipitation data in the design of public projects and the review of private developments.

The City of Inver Grove Heights has implemented approximately 60 rain gardens, neighborhood water storage, and rain harvesting for irrigation uses. Implementation
of rain barrels, previous pavement, green roods, cisterns, and stormwater reuse are allowed within the city. Since 2015, the City code requires Atlas 14 precipitation and storm distribution data to be utilized during hydrologic analysis. In all Northwest Area developments, an ongoing retrofit program exists that aims for zero stormwater discharge. The City won the American Council of Engineering Companies (ACEC) National Grand Award for accomplishing the City's zero runoff development goal in the Northwest Area (2015).

In 1996, Maplewood installed its first rain garden to help manage stormwater. Maplewoods rain garden program includes: rain garden in Maplewoods street reconstruction programs; installing a rain garden of your own; rain gardens for developments and businesses. Although the City does not require rain gardens, the City has implemented guidelines and design standards for resident and commercial development usage of rain garden designs. These rain gardens are also created when there is new construction or renovation of streets within Maplewood. The living Streets program in the city will create rain gardens as well as creating areas of infiltration near sidewalks.

Permeable pavement is also used in areas such as the Maplewood Public Works parking lot, as well is in the Geranium Park parking lot. Permeable pavers were placed in the parking lot of the Maplewood Nature Center.

Link to Stormwater Management Plan:
http://www.ci.maplewood.mn.us/DocumentCenter/View/1512

Beginning in 2008 the City of Mounds View undertook a comprehensive Street and Utility Improvement Program (Program) that reconstructed approximately 26 miles (roughly 68%) of existing city streets. As part of this program the city installed numerous infiltration basins (rain gardens) throughout the Program area. The basins allowed for infiltration as well as reduced the amount of stormwater entering the underground system. The city and Rice Creek Watershed District inspect these basins on a regular basis. The city is in the process of developing a citizen education program to assist residents with maintenance and upkeep of these features.

a. Rain gardens/infiltration practices. Completed. The City utilizes infiltration galleries and raingardens where possible on its own projects and requires these facilities in redevelopment sites.
b. Rainwater harvesting practices. Completed. The City has partnered with Shingle Creek Watershed to install a cistern for rainwater reuse.
d. Pervious/permeable pavement or pavers. Completed. The City has partnered with Shingle Creek Watershed and University of MN to install porous asphalt and monitor effectiveness.
e. Green roofs / green walls. In process. The City's new Centralized Water Treatment Plant will include a green roof over the administrative portion of the building.
f. Tree trenches / tree boxes. Completed. New developments in the downtown have provided streetscape trees in a Stockholm Soil configuration to provide enhanced growing conditions and reduce pavement uplift.

For sites with 5,000 square feet of new impervious, but less that 1 acre of total project drainage area the infiltration standard is to provide a volume control that is equal to 0.5 inches of runoff from all new impervious surfaces.

For sites with 1 acre or greater of new and fully reconstructed impervious the infiltration standard is to provide volume control that is equal to 1.0 inches of runoff.

For linear projects, the water quality volume must be calculated as the larger of one 1.0 inches times the new impervious surface or 0.5 inches times the sum of the new and the fully reconstructed impervious surface, whichever is greater.

For areas within the High Value Resource Areas (HVRA) as defined by the Lower Minnesota River Watershed District (LMRWD) that create greater than 10,000 square feet of new impervious the volume requirements are as follows:
• New developments that create 10,000 square feet or more of new impervious surface on sites without restrictions, the post-construction stormwater runoff volume retained on-site shall be equivalent to 1.0 inch of runoff from impervious surfaces.
• Redevelopment projects on sites without restrictions that create 10,000 square feet or more of new and/or fully reconstructed impervious surfaces shall capture and retain on-site 1.1 inches of runoff from the new and/or fully reconstructed impervious surfaces.
• Linear projects on sites without restrictions that create 10,000 square feet or greater of new and/or fully reconstructed impervious surfaces shall capture and retain the larger of the following:
1. 0.55 inch of runoff from the new and fully reconstructed impervious surfaces.
2. 1.1 inches of runoff from the net increase in impervious area.

This Surface Water Management Plan for the City of Bloomington has been developed
to meet local watershed management planning requirements of the Metropolitan Surface
Water Management Act (Chapter 103B) and Board of Water and Soil Resources Rules
8410. It has also been developed to be in conformance with the requirements of local
Watershed Management Organizations and Districts, Metropolitan Council requirements,
Hennepin County goals and applicable State and Federal laws. This document and its
referenced literature are intended to provide a comprehensive inventory of pertinent
water resource related information that affects the City and management of those
resources.

The City has implemented guidelines for all of the listed practices.

Under the Duluth UDC section 50-41, the definition for "Erosion and sedimentation practice specifications, or practice" makes explicit reference to the MPCA Protecting Water Quality in Urban Areas handbook, which serves as a guideline for design standards for stormwater management. It includes guidelines for many different types of rain gardens and other infiltration methods, as well as grid pavers and green walls, among others. Stormwater management that follows some set of best management practices (the MPCA handbook is highly recommended but not required) is necessary in order to obtain a building permit.

Complete: The use of Coal Tar sealants were banned with the League of Cities model ordinance being implemented at the 15 Nov. 2011 Edina City Council meeting. Chapter 4 was amended to add section 490 (https://edinamn.gov/Section%20490%20Regulation%20of%20Coal%20Tar%20Based%20Sealers.pdf).

Construction of the redevelopment of the former US Bank property located at 70th and France, in Edina, began in 2022 following the proposed redevelopment plan published in October of 2020. On site and listed in the 70th & France Environmental Assessment worksheet, multiple stormwater management infrastructure designs shall be constructed including: green roofs, pervious pavers, pixelated parking, and underground parking to reduce runoff and improve infiltration. Tree boxes or tree trenches may be implemented on-site.

Based on the existence of sandy and gravel soils in Elk River, the city requires infiltration practices when deemed appropriate. These design standards are evaluated case by case given the area and project. The City's Stormwater Coordinator reviews such projects.

Stantec

Narrowing of streets/Road diet - Downtown streets were done in 2004. 1st, 2nd, 3rd Ave were done in 2008.
North House paving of the common area is with water permeable pavers with a grid beneath to channel water to retention and infiltration areas, rather than directly into the Lake. The North House Harbor-Side Commons Revitalization Project received a grant from the Minnesota Lake Superior Coastal Program in 2011 to revitalize an important Grand Marais waterfront property and outdoor community resource located on City of Grand Marais property. These improvements: 1) Improved harbor water quality by removing blacktop located adjacent to the harbor 2) Protected water quality by relocating public parking away from the harbor 3) Enhanced the property's public accessibility and aesthetic character, and, 4) Modeled environmental building strategies by utilizing pervious paving systems as well as stormwater treatment techniques.
In a related project, several entities collaborated to build a covered bridge for over a landscaped drainage/ infiltration basin. The bridge was built by high school students as a collaborative effort between Northshore Folk school and the public school. The drainage area slows the infiltrates the flow, retains sediments, from street stormwater runoff. The drainage used to flow largely unimpeded into the lake shore. The swale is vegetated with deep-rooted native plants that provide both storm water mitigation and a visual amenity. The covered bridge connects the walking trail in the campground to the plaza in the Folk School, and then to the public bike/ped trail leading into the downtown and harbor area.

Crystal Waters Project is a Lake Crystal-based organization whose goal is improving the water quality in the city's lakes. Reducing the amount of runoff that makes its way to the lakes is one of the group's goals. Rain gardens and natural shorelines reduce the amount of debris, chemicals and organics that end up in the lakes. With this in mind, Crystal Waters Project launched the "Landscaping for Crystal Waters" program in May of 2019. This project was designed to assist city residents in planting rain gardens and restoring or preserving their shorelines. It was modeled after Dakota County's "Landscaping for Clean Water" program. The components of the program were:
• Raise awareness of the program through social media and a newspaper campaign.
• Host an introductory class designed to explain the program and the designing/planting process.
• Host a design class with qualified instructors for both rain gardens and lakeshore preservation.
• Provide guidance as the projects were undertaken.
• Assess compliance with project guidelines after project completion.
• Provide signage for the project area.
• Reimburse homeowners for a portion of the expenses incurred.

Details for each component:
• Raise awareness of the program through social media and a newspaper campaign.
The program was explained and advertised on Facebook, the Crystal Waters Project's website and in the local newspaper.

• Host an introductory class designed to explain the program and the designing/planting process.
During this session, participants learned about the need for rain gardens and lakeshore preservation. They also got a general idea of how to design and create these plantings. The reimbursements offered, and the steps needed to be eligible for them, were also explained. Most of this information was transmitted through a PowerPoint presentation with experts available to answer questions. Seventeen city residents attended this session.

• Host a design class with qualified instructors for both rain gardens and lakeshore preservation.
During this session, participants were divided into two groups based on their goals. The group interested in planting rain gardens made up one group and those interested in restoring lakeshore were the other. Each group had an instructor who is an expert on those topics. They went through a series of PowerPoint slides and then were given the opportunity to actually put their designs on paper. Each participant also received a book to use as a reference when installing their projects.

• Provide guidance as the projects were undertaken.
The class instructors and the project coordinator were all available to answer questions, inspect potential sites and provide support throughout the process.

• Assess compliance with project guidelines after project completion.
The project coordinator visited each site after it was completed to assess the project's compliance with guidelines. Where needed, suggestions were made for improving the effectiveness of the installation.

• Provide signage for the project area.
Each site was provided with a sign stating the nature of the project and the reason it was undertaken. Photos were also taken of each completed project.

• Reimburse homeowners for a portion of the expenses incurred.
Homeowners completed a grant application and were then reimbursed for a portion of the expenses incurred. Rain garden installations were eligible for up to $150 and lakeshore projects up to $500. Funds from the Crystal Waters Project were used for these stipends.

Other expenses: materials for classes (books, graph paper, brochures, copies, mailings). The class instructors volunteered their time, as did the project coordinator.

Rain gardens were installed at the city's golf course on Bass Lake Rd at 8130 Bass Lake Rd and on 49th Ave N near Little Acre Park. The 2015 infrastructure project includes a rain garden at Holiday Park at 47th Ave N & Flag Ave N and the option for residents to install rain gardens when the street is reconstructed.

The city constructed a 160,000-gallon underground water storage tank at Northwood Lake in 2016 that collects rainwater and is used to irrigate the nearby ball fields. Recent redevelopment projects with stormwater retention ponds include CVS on Bass Lake Rd, Compass Pointe apartments at 62nd Ave & West Broadway, and the Parkview housing development at 55th Ave N & Winnetka Ave N.

The parking lots planned for the new police station/city hall and Civic Center park include a proposed two-foot rock trench, which would serve as grade for the lots. Stormwater would be treated with a draintile system, filtering it before traveling to the pond northeast of the site.

Improvements along Xylon Avenue in 2015 included the use permeable pavers.

During the planning of a 2 phase street reconstruction project in the Woodpecker Ridge neighborhood, the city decided to pursue a rain garden design for stormwater management vs. traditional curb and gutter stormwater management. Residents were involved in the project planning and implementation process. Volunteers were recruited to help plant the gardens over two days. The rain garden design ended up to cost less than the traditional curb and gutter design. The purpose of the rain gardens installation was to reduce runoff into the nearby Snake River and Cross Lake and improve water quality. The engineering firm that consulted on the project found that sediment run-off decreased as a result of the gardens. This rain garden project is the largest of its kind in greater MN.

The City of St. Cloud has design standards for rain gardens, green roofs, and green parking lots in the Development Code, Appendix F, Permanent Storm Water Design Checklist. These design guidelines were developed in accordance with MPCA's, Minnesota Stormwater Manual.

The City's Development Code requires adequate provision for managing the quantity and quality of storm water runoff. Subdivisions shall meet the adopted water management rules, standards and plan requirements of local watershed districts for
volume control, rate control and water quality.

The design of ponds and other stormwater Best Management Practices (BMPs) shall conform
to the requirements of the City’s Engineering Standards and to the standards and design
recommendations in the Minnesota Pollution Control Agency’s Minnesota Stormwater
Manual (2006 and subsequent revisions) and Minnesota Stormwater Best Management
Practices Manual.

South St. Paul, in partnership with the Soil and Water Conservation District (SWCD), is offering rebates to residents that install a rain barrel or rain garden for the cost of instillation. This rebate is through the "One Water" Grant Program. Any residents that took part in the Landscaping for Clean Water Workshop and installed a rain garden is eligible for the rain garden rebate. Residents that install a rain barrel did not need to take part in the Landscaping for Clean Water Workshop to be eligible to receive the grant.

Additionally, South St. Paul's Stormwater Runoff Design Standards encourages rain gardens, rain reuse, trees and tree planters and green roofs as a method of storm water volume control.

Chapter 27 of the city code, Environmental Management, states new development should first review the following site design and BMP options before designing the stormwater system:

(1) Preserving natural vegetation.
(2) Preserving and utilizing natural upland swales, depressions and upland storage areas in the post development condition to the degree that they can convey, store, filter, and retain stormwater runoff before discharge. Preservation requires that no grading or other construction activity occurs in these areas.
(3) Eliminating curb and gutter where practicable and using vegetated swales or equivalent.
(4) Minimizing parking facility size.
(5) Using shared parking facilities consistent with zoning requirements.
(6) Installing semi-permeable/permeable or porous paving.
(7) Maximizing open space while incorporating smaller lot sizes to conserve natural areas and reduce the amount of stormwater runoff generated at the site.
(8) Utilizing vegetated areas to filter sheet flow, remove sediment and other pollutants and increase time of concentration.
(9) Disconnecting impervious areas by allowing runoff from small impervious areas to be directed to pervious areas where it can be infiltrated or filtered.
(10) Increasing buffers around streams, steep slopes, and wetlands to protect from flood damage and provide additional water quality treatment.
(11) Installing green roofs.
(12) Using irrigation ponds/systems, cisterns, rain barrels and related BMPs to reuse stormwater runoff.
(13) Planting of trees as a stormwater BMP.
(14) Utilizing a soil amendment/decompaction process after site disturbance.

The city’s design guide includes design standards for infiltration areas/rain gardens. We have also provided guidance and examples for new developments that are interested in stormwater reuse, green roofs and porous pavers by the installation of example projects on city property.

The Shell Rock River Watershed District works with the City of Albert Lea to implement reasonable and necessary improvements to the water-related and other natural resources of the area. Projects include:
• Offering rain barrels for sale (including a $10 cost share for citizens living in Albert Lea), as well as instructions for proper use available on the website, in person, or as flyers available at the office.
• Assisted with installation of 3 rain gardens in Albert Lea (Lakeview, Fountain Lake Park, and at S 1st Ave and W Main St), and plans are underway for a large rain garden in a City lot. Information and guidelines for installing rain gardens is available on the website. Cost share incentives are available for rain gardens as well.
• Cost shares are also available for permeable pavement.
• During reconstruction of Broadway and Main St., tree boxes were installed.
• For all projects completed by the District, native plants are sourced if possible.

Engineering design guidelines are in place for rain gardens.

Rain Gardens have been constructed at the Hormel Nature Center, Mower County Jail and Justice Center, and at the Mill Pond

Project 1: Impervious surface limitation for stormwater management are part of Bemidji Zoning Ordinances. Adopted March 15, 2007

http://www.jpbgba.org/vertical/sites/%7B134ED1DD-8F5D-4B72-9D00-AFD6CD25F943%7D/uploads/2014-04-09_Revised_JPB_Zoning_Ordinance.pdf

d) Erosion and Sedimentation Control ordinance adopted December 19, 2007.

https://www.municode.com/library/mn/bemidji/codes/code_of_ordinances?nodeId=PTIICOOR_CH14EN_ARTVIIERSECO

other: Prohibition of the use and sale of coal tar sealant products Adopted December 2, 2013.

Within the City of Burnsville's parking standards, landscape standards, and PUD zoning ordinance provide for pervious pavement/paver systems & rain water gardens.

The city recently adopted an ordinance allowing permeable pavement or pavers within the city.

Coon Rapids worked in partnership with Anoka Conservation District and Coon Creek Watershed District to install nine curb-cut rain gardens in a residential neighborhood. This area has large amount of runoff that flows into Sand Creek. Rain gardens function as a cost-effective best management practice for this area and also provide an educational opportunity for residents. This city continues to develop these partnerships and serve as a resource to the community. Know the Flow featured a story about the partnership in Coon Rapids highlighting the water quality improvement that resulted from the rain gardens. http://www.knowtheflow.us/2012/12/rain-gardens-are-improving-sand-creek/
The City uses the Minnesota Stormwater Manuel for the design of these stormwater Best Management Practices. Many of these stormwater BMPs have been implemented on private development projects over the past several years.

Boulevard rain gardens are installed, where appropriate and as requested by residnents, as part of local street reconstruction projects.
The City also has constructed several public rain gardens in parks and rights-of-way where appropriate.

All new construction is required to provide erosion control which is part of the building plan review and comment process.

In conjunction with the local water organization Hutchinson Waters, the City has passed out approximately 500 rain barrels to community members.

The City’s stormwater management ordinance allows for the use of rain gardens for stormwater management so long as the appropriate MPCA guidelines are followed and the City approves the plans.
The City installed a 0.25 acre raingarden in 2015 for the stormwater management of a newly built 75,000 sq. ft. City owned facility.

La Crescent completed section G (Incorporate compost and/or native plants into landscape design) of this action. There are native plants located in Veterans Park, Kistler Park, Vetsch Park and within the MnDOT Landscape Partnership.

The City has adopted design standards for rain gardens/infiltration practices through a standard specification included in the City's specification book. The City hosts two design workshops per year with the Dakota County Soil and Water Conservation District for residents to learn about the installation of rain gardens.

Stormwater Management: In 2010, we installed a large French Drain in our city park to allow for the return of storm water runoff from our parking lot in order return water to the ground as opposed to the prior practice of allowing the runoff water to enter the Missisippi/Prairie River. The design for stormwater runoff and new road construction includes the use of a large french drain which will gather the water and allow it to return to the aquifer.
In another section of the city near Glenwood Ave, we have storm water the drains to the prairie River. We have designed a new system that will infiltrate the water prior to reaching the river.

Green stormwater infrastructure, built a new stormwater system as part of a street reconstruction project that returns water to the ground through an infiltration pond and an infiltration ditch that protects runoff from reaching the river.

Rain garden implemented and proposed in all new construction projects. The first implemented rain garden is located at the Tribal Headquarters.

RAIN GARDEN/INFILTRATION PRACTICES-THESE WILL BE IMPLEMENTED IN THE NEW PARKS. WE ALSO HAVE A FEW RESIDENTS THAT CURRENTLY HAVE RAIN GARDENS IN THE YARD

a. The City of Mendota Heights offers a rain garden program to residents whose property is part of a street improvement project. For other residents, the city give suggestions for grant programs that can assist with deferring the cost of building a rain garden.
b. The city promotes the use of rain barrels to residents by participating as a pickup location for an annual rain barrel and compost bin sale. Residents can order a barrel online, take advantage of a 30% discount provided by Dakota County, and pick it up at the public works facility.
c. Mendota Heights incorporates native plantings in city property landscaping projects including at City Hall, Oheyawahe/Historic Pilot Knob, and the Par 3 Golf Course.

We do not have incentive. But the City is working on guidelines for boulevard plantings and boulevard rain gardens. The rain gardens have to be designed by a Professional Engineer or Landscape Architect.
River Keepers puts on the rain barrel classes – the City uses them for our MS4 Public Education and Outreach program

City currently has the following standards in place:

- Street & Utility Design Standards
- Storm Water Pollution Prevention Program
- Engineering Design Standard for Stormwater Management

The City of North St. Paul implemented a rain garden policy and resident guide in October 2012. The rain garden policy outlines the guidelines for installing rain gardens in the city's right of way. The policy provides information to residents who are interested in installing rain gardens the benefits of rain gardens.The policy outlines guidelines as well as provides information on possible cost-share dollars that are provided by the local watershed districts. The policy additionally offers residents a 35% reduction in their storm water fee. To ensure that the rain gardens are functioning properly now and into the future residents have submitted maintenance agreements.

City of Northfield started providing incentives for city property owners to enhance stormwater collection and infiltration. The Rain Barrel Rebate program offers residents a $20 credit on their utility bill by installing a rain barrel to capture and reuse stormwater runoff. Rain Garden cost share program offers residents up to $250 credit on their utility bill by installing a rain garden.

The Oakdale Environmental Management Commission created technical standards and design examples for residential raingarden installation in the city. These standards included basic information on percolation tests, proper sizing and construction of the garden. There were also examples with plant lists a pollinator-friendly and native prairie gardens. The commission is currently evaluating locations in city parks for a demonstration raingarden location.

Rain gardens, compost, and native plantings are used to mitigate storm water events. An example of native plantings can be seen at the Admin Building.

The City of Red Wing has raingardens and has design standards for implementation for city and residents.

The City provides education to residents regarding the protection of our surface water by reducing stormwater runoff and reducing the introduction of pollutants.

The city has installed many rain gardens in the Walsh Lake area using guidelines and design standards for rain gardens to encourage infiltration and alleviate local flooding problems.

When the Royalton School District removed a building to install a parking lot, the City of Royalton specified thathree rain gardens be installed to handle the storm water runoff

Rush City does not require new developments to have rain gardens, but storm sewer holding ponds have been created to help treat rain water and minimize runoff into Rush Creek. In 2010, the City worked with the Soil & Water Conservation District to install six rain gardens during a street construction project on 7th St Circle and 7th St. Court. In the future, street construction projects will continue to install rain gardens where feasible.

The City of Saint Paul's Sustainable Building Policy requires stormwater infiltration. Furthermore, CRWD, RWMWD and MWMO offer grants for these practices. LWMO participates in the Blue Thumb program. The Ramsey Conservation District provides rain garden design assistance to Saint Paul Residents. A pervious/permeable pavement project is also in place at Hamline library. Tracking performance of the permeable pavement is part of the project.

Section 69.319 of the Saint Paul Ordiannce also guides parking lot stormwater landscaping work.

The city has adopted and implemented incentives for rainwater water harvesting. Citizens are encouraged to purchase rain barrel by providing a rebate. Purchase of one of the qualifying barrels entitles the utility customer to either a $25 rebate on their utility bill or a $10 rebate on the utility bill for the purchase of a rain barrel diverter and parts kit. The main goal of a rain barrel is to reduce the amount of stormwater runoff which enters the storm sewer system and ultimately enters the rivers and streams, thereby reducing pollution and erosion. It is an inexpensive way to conserve water with many economical and environmental benefits.

We do not have a rainwater harvesting system however we do have a backwash water harvesting system. Backwash water is the water that is pushed back through filters in our water treatment plant. That water is then recycled one more time to get as much water out of it as possible. This is instead of wasting it to the Minnesota river.

The City's Environmental Quality Committee hosts an annual Green Community Award program which recognizes private property owners for these stormwater infiltration or reuse techniques. This is one way the City promotes best management practices for stormwater.

When the City installs rain gardens, cisterns, or pervious pavement, we follow the Minnesota Stormwater Manual or the Urban Small Sites Manual for specifications.

The City has a coal tar ban in place. The City will consider green alley development when it does street reconstruction projects in the downtown area within the next few years.

Winona offers cost-sharing grants for residents to create their own rain gardens. Design standards are built into the application.

In 2018, the City funded the construction of 37 rainbarrels. The project included construction instructions so resident can build their own from reused 55 gallon drums.