HomeMy WebLinkAboutEnvironmental Quality Committee Packet 08-12-2020
CITY OF PLYMOUTH
AGENDA
Environmental Quality Committee
August 12, 2020, 7:00 PM
Virtual Meeting
1. CALL TO ORDER
1.1 Instructions to participate in virtual Environmental Quality Committee Meeting
2. PUBLIC FORUM – Individuals may address the Committee about any item not contained on
the regular agenda. A maximum of 15 minutes is allotted for the Forum. If the full 15
minutes are not needed for the Forum, the Committee will continue with the agenda. The
Commission will take no official action on items discussed at the Forum, with the exception
of referral to staff for future report.
3. APPROVE AGENDA – Environmental Quality Committee members may add items to the
agenda for discussion purposes or staff direction only. The Environmental Quality
Committee will not normally take official action on items added to the agenda.
4. CONSENT AGENDA – These items are considered to be routine and will be enacted by one
motion. There will be no separate discussion of these items unless a Committee member or
citizen so requests, in which event the item will be removed from the Consent Agenda and
placed elsewhere on the agenda.
4.1
4.2
Approve March 11, 2020 Environmental Quality Committee Meeting Minutes
Approve June 10, 2020 Environmental Quality Committee Meeting Minutes
5. GENERAL BUSINESS
5.1
MS4 Annual Public Hearing (Riegel)
- Accept Public Comments on the 2020 Storm Water Pollution Prevention
Program (SWPPP)
6. REPORTS AND STAFF RECOMMENDATIONS
6.1 2020 – 2022 Water Efficiency Rebate Program (Scharenbroich)
7. FUTURE MEETINGS
7.1 September 9, 2020
8. ADJOURNMENT
ENVIRONMENTAL
QUALITY COMMITTEE
August 12, 2020
Agenda
Number: 1.1
To: Environmental Quality Committee
Prepared by: Ben Scharenbroich, Water Resources Supervisor
Reviewed by: Chris LaBounty, City Engineer
Item: Instructions to participate in virtual Environmental Quality
Committee Meeting
1. ACTION REQUESTED:
The Chair provides instructions for the public to participate in the meeting by phone or online.
2. BACKGROUND:
Environmental Quality Committee meetings will be conducted virtually (via Zoom webinar/conference
call) due to the state of local emergency for the COVID 19 pandemic. Members of the Environmental
Quality Committee and staff will participate in this meeting via telephone/video conference.
Written comments may be submitted for inclusion in the Environmental Quality Committee packet by
emailing bscharenbroich@plymouthmn.gov. You may also request that comments of up to one page be
read into the record by the Water Resources Supervisor.
You may speak during the meeting via telephone or via Zoom Conferencing Service at no cost. Please
notify Water Resources Supervisor at bscharenbroich@plymouthmn.gov if you wish to speak to an item
at the meeting or if you have questions about connecting to speak during the meeting. We ask that
provide notification at least one hour prior to the meeting time to ensure message is received. The
password to the meeting will be provided to you at that time.
To join the Meeting:
• https://us02web.zoom.us/webinar/register/WN_nxyqash4RyGpfcsF8mNGuQ
For audio only: Call: (312) 626-6799
• Meeting ID: 854 2932 1246
• Password will be needed - obtain from staff at least one hour prior to meeting
3. BUDGET IMPACT:
N/A
4. ATTACHMENTS:
N/A
Proposed Minutes Page 1 of 3 Regular Meeting of March 11, 2020
Proposed Minutes
Environmental Quality Committee Meeting
March 11, 2020
Vice Chair Babcock called a Regular Meeting of the Plymouth Environmental Quality
Committee to order at 7:03 p.m. in the Medicine Lake Room of City Hall, 3400 Plymouth
Boulevard, on March 11, 2020.
COMMITTEE MEMBERS PRESENT: Vice Chair Babcock, Committee Members Spoonheim,
Prokop, Polzin, and Senne
COMMITTEE MEMBERS ABSENT: Chair Gregor and Councilmember Roehl.
STAFF PRESENT: City Engineer LaBounty, Interim Water Resources Manager Scharenbroich
and Graduate Engineer Dempsey
Plymouth Forum
There was no one present to address the Committee.
Presentations and Public Information Announcements
There were no presentations or public information announcements.
Approval of Agenda
Motion was made by Committee member Spoonheim and seconded by Committee member
Polzin to approve the agenda. With all members voting in favor, the motion carried.
Consent Agenda
Motion was made by Committee member Polzin, and seconded by Committee member Senne to
approve the Consent Agenda that included the following items:
4.1) Approve February 12, 2020 Environmental Quality Committee Meeting Minutes
With all members voting in favor, the motion carried.
General Business
5.1) Boat Launch Closure – West Medicine Lake Park
Interim Water Resources Manager Scharenbroich gave an overview of the proposal to
permanently close the boat launch at West Medicine Lake Park. The EQC listened to comments
Proposed Minutes Page 2 of 3 Regular Meeting of March 11, 2020
from two property owners in attendance:
Roger Meyerhoff, 11825 23rd Avenue North, expressed his opinions that he is against the
closure.
Jim Lauer, 2810 Evergreen Lane North, representing the Medicine Lake Homeowners
Association (AMLAC), expressed opinion in favor of the closure.
Items discussed with the closure included:
Move the closure
Explore access for residents and require
Explore low water access at West Medicine Park for when French Park is not accessible
Modify dates of the closure
Motion was made by Committee Member Spoonheim and seconded by Committee Member
Polzin to recommend closing the West Medicine Lake Park boat launch, and to direct city staff
to discuss the following items with Three Rivers Park District staff:
1. Allow residents who live on the lake access to the boat launch when launching and not
parking in the parking lot.
2. Explore enhancements to the French Regional park Boat Launch to address low water
launch concerns
3. Discuss expanded AIS monitoring in the early morning hours
4. Discuss the feasibility of the City opening the West Medicine Lake Boat Launch should
low water conditions prevent residents from utilizing the French Regional Park Boat
Launch
With all members voting in favor, the motion carried.
5.2) Chloride Educational Materials
Interim Water Resources Manager Scharenbroich discussed the various educational materials
currently used for chloride management. The committee gave feedback and offered additional
suggestions for education:
Request the City Council to support limited liability legislation
Require commercial property owners to be salt smart certified
Expand chloride monitoring
Provide education to elementary school students
Develop a Plymouth specific graphic and incorporate more graphics and use less text
Proposed Minutes Page 3 of 3 Regular Meeting of March 11, 2020
Reports and Staff Recommendations
6.1) 2020 Environmental Quality Committee Public Events
Interim Water Resources Manager Scharenbroich asked that the committee members each email
him for which events they will attend:
A. Discover Plymouth - Saturday, April 18th
B. Drop Off Day - Friday, April 24
C. Music in Plymouth - Wednesday, July 14
D. Adopt-A-Street – the dates will be determined at the April 8 EQC meeting,
Adjournment
Committee Member Babcock adjourned the meeting at 8:58 p.m.
Proposed Minutes Page 1 of 2 Regular Meeting of June 10, 2020
Proposed Minutes
Environmental Quality Committee Meeting
June 10, 2020
Chair Gregor called a Regular Meeting of the Plymouth Environmental Quality Committee to
order at 7:02 p.m. on June 10, 2020. All present participated remotely, per State Statute 13D.021.
COMMITTEE MEMBERS PRESENT: Chair Gregor, Vice Chair Babcock, Committee
Members Prokop, Polzin, Senne, and Niedermaier
COMMITTEE MEMBERS ABSENT: Committee Member Spoonheim
STAFF PRESENT: City Council Representative Roehl, City Engineer LaBounty, Interim Water
Resources Manager Scharenbroich, and Graduate Engineer Dempsey
Plymouth Forum
There was no one present to address the Committee.
Presentations and Public Information Announcements
There were no presentations or public information announcements.
Approval of Agenda
Interim Water Resources Manager Scharenbroich indicated Item 4.1, Approval of the March 10,
2020 meeting minutes, would be moved to the July meeting. Motion was made by Committee
member Babcock and seconded by Committee member Polzin to approve the agenda as
amended. With all members voting in favor, the motion carried.
Consent Agenda
There were no items on the Consent Agenda.
General Business
5.1) Organics Recycling
Interim Water Resources Manager Scharenbroich recapped the history of the committee’s review
of an Organics Collection program, prompted by the Hennepin County recycling ordinance new
requirements and the modified SCORE funding for cities.
Graduate Engineer Dempsey gave a presentation about organics and explained the different
methods other cities in the county are implementing to meet the new ordinance requirements.
Proposed Minutes Page 2 of 2 Regular Meeting of June 10, 2020
Committee Member Senne asked details about the opt-in option, and if the City would be
pursuing this model to satisfy the ordinance. Dempsey explained that the goal is to increase
participation in organics recycling for the benefit of the environment, but building a program
takes education and outreach. City Engineer LaBounty explained the SCORE funds distribution,
and that at the current time there is little being spent on organics education.
Committee Member Polzin asked Graduate Engineer Dempsey about his research of both the
mandatory opt-in method used by other cities. Dempsey gave details of Edina’s opt-in program
and explained that fees for residents increased by 200%. He also gave information about two
cities with public Drop-Off sites, Richfield and Minnetonka. The public site seems to be works
well for a more densely populated city such as Richfield, but not has not been as well-received
by the city of Minnetonka, which has a less dense population.
The EQC discussed backyard composting, and questioned if it would be considered towards the
ordinance requirement. Graduate Engineer relayed that currently residents doing backyard
composting is not tracked and is not taken into consideration by the county, but if desired, the
City could advocate to the county to include backyard composting to be recognized as organics
recycling.
Motion was made by Committee Member Babcock and seconded by Committee Member Prokop
to recommend the City of Plymouth require all licensed trash haulers to provide curbside
collection of organic material upon request of household subscribers, and city staff provide a
residential education plan to include composting education. With all members voting in favor,
the motion carried.
Reports and Staff Recommendations
6.1) Water Efficiency Rebate Program Update
Interim Water Resources Manager Scharenbroich gave an update of the rebate program. The
program started in March and currently 7-1/2% or about $2500 of the funds have been awarded.
25 devices have been purchased saving approximately 575,000 gallons of water per year.
Adjournment
Chair Gregor adjourned the meeting at 8:27 p.m.
ENVIRONMENTAL
QUALITY COMMITTEE
August 12, 2020
Agenda
Number: 5.1
To: Environmental Quality Committee (EQC)
Prepared by: Amy Riegel, Senior Engineering Technician
Reviewed by: Ben Scharenbroich, Water Resources Supervisor
Item: Storm Water Pollution Prevention Program (SWPPP)
1. ACTION REQUESTED:
Accept Public Comment on the Storm Water Pollution Prevention Program
2. BACKGROUND:
Annually the City of Plymouth is required to prepare an annual SWPPP report detailing
progress made in the previous year as required by the MS4 Permit issued through the
Minnesota Pollution Control Agency. As part of that process an annual meeting is
required to be held to accept public comment on this update and those comments would
be included with the annual report to the Minnesota Pollution Control Agency.
The Minnesota Pollution Control Agency (MPCA) requires the City of Plymouth obtain
coverage to discharge stormwater outside the City limits under the General Permit to
Discharge Stormwater Associated with Municipal Separate Storm Sewer Systems (MS4)
under the National Pollutant Discharge Elimination System/State Disposal System Permit
Program.
The permit requires the City to develop a Storm Water Pollution Prevention Program
(SWPPP) consisting primarily of required minimum control measures as well as specific
activities to address impaired waters with approved Total Maximum Daily Load studies.
The City is required to regularly review and update the SWPPP to determine whether
changes may be warranted to the SWPPP to meet the goals of approved Total Maximum
Daily Load Plans.
Plymouth is one of roughly 220 entities in Minnesota covered through the NPDES Phase
II Permit Program. Phase II entities are those with populations ranging from 10,000 to
100,000. The MS4 permit application requires cities to develop a SWPPP and identifies
the minimum control measures (MCM) the SWPPP must address which include:
• MCM 1 – Public Education and Outreach
• MCM 2 – Public Participation and Involvement
• MCM 3 – Illicit Discharge, Detection and Elimination
• MCM 4 – Construction Site Storm Water Runoff Control
• MCM 5 – Post Construction Storm Water Management
• MCM 6 – Pollution Prevention and Good Housekeeping
This meeting and action on the SWPPP was noticed in the Sun Sailor Wayzata/Plymouth
July 30th and August 6th, 2020 to allow an opportunity for the public to comment on the
City’s SWPPP in accordance with the public participation and involvement requirement
of the MS4 Permit.
The published notice also linked directly to the SWPPP at his
link: www.plymouthmn.gov/index.aspx?page=263
As of August 7th, 2020 staff has not received feedback on the published SWPPP document
on the website.
3. BUDGET IMPACT:
Implementation of the Storm Water Pollution Prevention Program is primarily
supported through the Water Resources Fund which supports operations and capital
projects within the City.
4. ATTACHMENTS:
DRAFT Storm Water Pollution Prevention Program
-Public Notice Ad Proof-
Ad ID: 1062330
Copy LIne: SWPPP
PO Number: SWPPP
Start: 07/30/20
Stop: 08/06/2020
Total Cost: $94.50
# of Lines: 44
Total Depth: 4.889
# of Inserts: 2
Ad Class: 125
Phone # (763) 691-6000
Email: publicnotice@ecm-inc.com
Rep No: SE700
Date: 07/22/20
Account #: 412485
Customer: CITY OF PLYMOUTH, A/P
Address: 3400 PLYMOUTH BLVD
PLYMOUTH
Telephone: (763) 509-5080
Fax: (763) 509-5060
This is the proof of your ad scheduled to run on the dates
indicated below. Please proof read carefully if changes are needed,
please contact us prior to deadline at
Cambridge (763) 691-6000 or email at publicnotice@ecm-inc.com
Ad Proof
Enlarged
Publications:
SS Wayzata/Plymouth
Contract-Gross
CITY OF PLYMOUTHNOTICE OF PUBLIC INFORMATIONAL MEETINGSTORM WATER POLLUTION PREVENTION PROGRAM (SWPPP)
The City of Plymouth invites all
interested parties to attend an An-
nual Public Information Meeting on
Wednesday, August 12, 2020, at
Plymouth City Hall, at 3400 Plym-
outh Boulevard, at 7:00 p.m.
The purpose of the meeting is
to provide the public with infor-
mation regarding the City’s Storm
Water Pollution Prevention Pro-
gram (SWPPP). Information will
be available regarding the activities
the City has been and will be en-
gaging in as a result of implement-
ing the SWPPP. Items include:
the SWPPP, status of compliance
regarding permit conditions, prog-
ress toward achieving the measur-
able goals and planned activities
for next year.
A copy of the SWPPP is
available for review at the Plymouth
Engineering Department or
online at www.plymouthmn.gov/
index.aspx?page=263. Written
comments may be submitted at the
following address:
Water Resources
City of Plymouth
Engineering Department
3400 Plymouth Boulevard
Plymouth, MN 55447
Ben Scharenbroich
Interim Water Resources Manager
Published in the
Sun Sailor
July 30, August 6, 2020
1062330
NOTICE OF PUBLIC INFORMATIONAL MEETING
STORM WATER POLLUTION PREVENTION PROGRAM (SWPPP)
The City of Plymouth invites all interested parties to attend an Annual Public Information Meeting
on Wednesday, August 12, 2020, at Plymouth City Hall, at 3400 Plymouth Boulevard, at 7:00 p.m.
The purpose of the meeting is to provide the public with information regarding the City’s Storm
Water Pollution Prevention Program (SWPPP). Information will be available regarding the
activities the City has been and will be engaging in as a result of implementing the SWPPP. Items
include: the SWPPP, status of compliance regarding permit conditions, progress toward achieving
the measurable goals and planned activities for next year.
A copy of the SWPPP is available for review at the Plymouth Engineering Department or online
at www.plymouthmn.gov/index.aspx?page=263. Written comments may be submitted at the
following address:
Water Resources
City of P lymouth
Engineering Department
3400 Plymouth Boulevard
Plymouth, MN 55447
________
Ben Scharenbroich
Interim Water Resources Manager
\\fsch\pw\Utilities\Storm Sewer and Water Resources\Environmental Quality Committee\Packets\2020\8-12-2020\DRAFT SWPPP.docx
CITY OF PLYMOUTH
STORM WATER
POLLUTION PREVENTION PROGRAM
(SWPPP)
DRAFT
August 2020
SWPPP 2017 Page 2 of 67 City of Plymouth
TABLE OF CONTENTS
Introduction 3
History 3
Area Description 4
SWPPP Development 5
Funding Mechanism 5
Total Maximum Daily Load Implementation Plans 6
Minimum Control Measures Summary 9
Appendix A. BMP Summary Sheets 12
SWPPP 2017 Page 3 of 67 City of Plymouth
INTRODUCTION
Surface water resources such as lakes, wetlands, and creeks are an important component of the
quality of life for residents in the City of Plymouth. The Plymouth Storm Water Pollution
Prevention Program (SWPPP) promotes citizen involvement and provides a strategy for dealing
with the quantity and quality of the water resources in Plymouth.
The City of Plymouth has developed and will implement its SWPPP to reduce the discharge of
pollutants from its drainage system to the maximum extent practicable to protect water quality and
to satisfy the appropriate water quality requirements of the Clean Water Act. The City is
committed to sustainable management of its natural resources and minimum control measures are
listed which will assist the City in attaining its goals.
HISTORY
The first recorded settlement in Plymouth was on the east shoreline of Medicine Lake in 1853.
The first major storm drainage improvements were undertaken in Plymouth in the mid 1960s. This
initial Storm Drainage Program was subsequently updated with the 1973 Storm Drainage Plan
which presented an overall layout of major drainage facilities in Plymouth, including storm sewers,
ponding areas, and major drainageways. The main purpose of the 1973 plan was to provide an
adequate and economical means of conveying storm water runoff through Plymouth. The City
completed a revision to the 1973 plan in 1980. The 1980 revisions were based on recent platting
and development proposals, storm drainage improvements, and the Land Use Guide Plan. The
plan provided information on storm sewer and open channel sizes, storm water flows, pond storage
volumes, water levels, and costs.
A major undertaking began by the City of Plymouth in 1995 and 1996 to update its Storm Water
Management Plan to include integrated resource management. The focus of the new Plymouth
Water Resources Management Plan was to manage and protect both water quality as well as water
quantity. The 2000 Water Resources Management Plan established a clear view of existing
conditions, established goals for managing the City’s surface water resources, and set a new
process for public input in developing the plan. In 2008, the City expanded surface water
management to include new requirements such as the Minnesota Pollution Control Agency’s Total
Maximum Daily Load (TMDL) and Non-Degradation requirements. The 2008 Surface Water
Management Plan includes several major elements:
1. Goals and Polices
2. Official Controls
3. Watershed Assessments
Other efforts included Parkers Lake Watershed and Lake Management Plan (1993); Minnesota
Rules 8410, Metropolitan Area Local Water Management Plan (1992); Local Watershed
Management Plans; Plymouth Natural Area Survey (1994); Wetland Inventory and Ordinances,
(1994, updated in 2019); Hennepin County Ground Water Plan (1994); up-date of Erosion Control
and Shoreland Ordinances; Phosphate Free Fertilizer Use and Sale Restrictions (1995, up-dated in
2000), Land Resource Inventory (2006), Non-Degradation Report (2007), TMDL Reports, and
establishing and initiating continuous work on developing educational activities throughout the
City.
SWPPP 2017 Page 4 of 67 City of Plymouth
Since the submittal of the first SWPPP in 2003, the City has implemented and initiated many other
projects, such as:
1. The completion of the Phase I & Phase II of Medicine Lake Watershed Management and
Implementation Plans. The ultimate goals of these plans were to reduce at least 1000
pounds of phosphorous from the watershed and to implement an aquatic vegetation
management plan to reduce internal loading by at least 15%.
2. Establishing Aquatic Vegetation Management Plans for Medicine, Parkers, Bass, and
Schmidt Lakes.
3. Completed implementation of Parkers Lake Management and Implementation Plan
4. Developed and implemented Schmidt Lake Management Plan
5. Developed and implemented Gleason Lake Management Plan
6. Completion of the Hydrologic and Hydraulic study of the 2020 Urban Expansion Area
7. Establishing the Plymouth Pond Maintenance Policy
8. Expanding the Plymouth surface water monitoring program
9. Providing grant funds for area residents for projects that reduce turf grass, incorporate
native plants, or conserve water
10. Studied and adopted an alternative fuel policy
11. Expanded street sweeping program
12. Continued expansive Environmental Education Programs
13. Reviewed, up-dated, and expanded the City’s Goose management
14. Expanded the Purple loosestrife bio-control project
15. Established a Plants, Ponds, and Practices Tour
16. Completed the required Non-Degradation Report
17. Completed various flood protection/erosion repair projects
18. Assisted with development of TMDL and Implementation Plans
19. Participates on the Bassett, Elm, and Shingle Creek watershed technical advisory
committees.
20. Supported the Pike Lake Subwatershed Assessment through the Shingle Creek Watershed.
The City is also actively partnering and collaborating with its three watershed joint powers
organizations, one watershed district, the Metropolitan Council, the Minnesota Department of
Natural Resources, the Minnesota Board of Water and Soil Resources, and Hennepin County on a
variety of different grants, projects, and environmental education.
AREA DESCRIPTION:
Location. Plymouth is located in the western portion of the seven county metropolitan area in
central Hennepin County Minnesota. It is bounded on the north by Maple Grove, on the east by
Golden Valley and New Hope, the south by St. Louis Park, Minnetonka, and Wayzata, and on the
west by Orono, and Medina.
Topography. The topography of Plymouth can be described as rolling with isolated marsh lands,
swamps, lakes, and steep slopes. Approximately 150 feet in elevation changes varying from 1030
feet above sea level in the west central part of the city to about 880 feet above sea level in the
northeastern part of the city. Water drains naturally through most of the city. Approximately 20%
of the City is covered with water. Eight major lakes cover an area of about 1,542 acres with 2,857
acres of wetland areas.
SWPPP 2017 Page 5 of 67 City of Plymouth
Soils. The soil in Plymouth can be generally described as dense clay with few instances of lenses
of mixed sand and gravel. The three basic soil types encountered include sandy clay till from the
Des Moines Ice Slope of the Wisconsin Glaciations, natural sand and top soil and organic silt
deposits. Bedrock is found between elevations 700 and 800 feet.
Watersheds. Plymouth lies within the larger Mississippi River basin in east central Minnesota.
There are four local watersheds in the City, Shingle Creek, Bassett Creek, Minnehaha Creek, and
Elm Creek with 19%, 53%, 16%, and 12% of the city in these watersheds respectively.
Growth. Plymouth has experienced rapid but steady growth over the past three decades. In 2010,
the population of Plymouth was 70,576 per the U.S. Census. Both industrial and commercial
sectors have also been growing along with the population growth. The City is almost 85%
developed with land use of commercial, industrial, and residential land uses.
Climate. The climate is typical of the metro area. The mean annual temperature is 44 degrees
Fahrenheit and the mean monthly temperature varies from 12 degrees Fahrenheit in January, to 73
degrees Fahrenheit in July. The average annual liquid precipitation is approximately 30.5 inches,
of which annual average snowfall is 44 inches.
SWPPP DEVELOPMENT:
City staff attended workshops organized by the League of Minnesota Cities to gather information
on how to develop the Storm Water Pollution Prevention Program in accordance with Minnesota
Pollution Control Agency’s requirements. The process of self assessment included a number of
components:
• staff attended the workshop organized by the League of Minnesota Cities and
the Minnesota Pollution Control Agency;
• the City conducted a review of existing ordinances;
• Review and up-date of the existing storm water pollution prevention policies
and practices currently in use;
• educational and training programs which focus on storm water pollution
prevention were evaluated and reviewed;
• regular internal staff meetings were conducted to discuss collaboration between
the existing programs, proposed new programs, to identify any gaps in meeting
the requirement of SWPPP, and finally selecting appropriate best management
practices to meet the plan’s objectives.
The internal staff meetings have been a major component of the self assessment part of the
Plymouth SWPPP. A number of City staff from different departments and divisions have all been
actively involved in this process. The group established and identified existing Best Management
Practices and looked for areas where the City could improve to maximum extent practicable to
meet the plan’s objectives and requirements.
FUNDING MECHANISM:
The City of Plymouth has established a Storm Water Utility fee that is assessed against utility bills.
The City’s Storm Water Utility Revenue is generated by fees according to land use. At present,
the rate is $7.34 per month per residential parcel, 3.32 times the residential rate for multi-family,
SWPPP 2017 Page 6 of 67 City of Plymouth
and 7.18 times the residential rate for commercial and industrial. Other land uses are evaluated
individually based on the amount of impervious coverage and parcel size. Details on the City’s
Storm Water Utility Fee can be found in Section 725 and Section 1015 of the City Code.
TOTAL MAXIMUM DAILY LOAD (TMDL)
The City of Plymouth is currently subject to 18 water quality impairments (excluding mercury)
and seven EPA approved TMDL plans. TMDL implementation plans are expected in the future
for each of the other impairments.
A. Shingle Creek Chloride TMDL
In 1998, Shingle Creek was listed on the Federal Clean Water Act’s 303(d) list of impaired
waters for exceeding the chloride standard for aquatic life. The listing of Shingle Creek as
impaired resulted from a limited sampling of chloride completed in 1996 by the US
Geological Survey (USGS) at their discharge monitoring station at the Queen Avenue
Bridge in Minneapolis. After reviewing the USGS data from Queen Avenue, the Shingle
Creek Watershed Management Commission (SCWMC) has been sampling routinely for
chloride in Shingle Creek. This TMDL was developed to address the 1998 listing for the
impairment of aquatic life and recreation based on chloride exceedances.
The City of Plymouth is a stakeholder in the Shingle Creek Watershed. The Shingle Creek
Chloride TMDL was prepared by the watershed. Stakeholders in the watershed agreed to
work collectively to achieve a 71% reduction in chloride use to achieve the standard
understanding that each stakeholder was working under unique financial, public safety and
perception, and feasibility limitations.
The SCWMC will be the lead on the implementation of the Chloride TMDL, however,
individual stakeholders (City of Plymouth) will be ultimately responsible for implementing
the identified BMPs. Implementation strategies can be found in Table 1.
TABLE 1. Shingle Creek Chloride Reduction Strategies.
Implementation Item SWPPP reference Progress
Product application, equipment, and decisions Appendix A 6.a.1 Ongoing
Deicer stockpiles Appendix A 6.b.4 Ongoing
Operator training Appendix A 1.c.1 Annually
Cleanup and snow stockpiling Appendix A 6.a.2 Annually
Ongoing research into salt alternatives Appendix A 6.a.1 Annually
SCWMC Activities Appendix A 1.c.1 SCWMC
Monitoring Appendix A 6.c.1 SCWMC
Street Sweeping Appendix A 6.a. 2 Annually
The City of Plymouth will continue to implement the Shingle Creek Chloride TMDL plan
and support the monitoring of the creek.
B. Schmidt, Pomerleau, and Bass Lakes Nutrient TMDL
In 2002, Schmidt, Pomerleau, and Bass Lakes were listed on the Federal Clean Water Act’s
303(d) list of impaired waters for aquatic recreation because the lakes exceed the water
quality standard for nutrients. The goal of this TMDL is to quantify the pollutant reductions
needed to meet the water quality standards for nutrients in Schmidt, Pomerleau and Bass
SWPPP 2017 Page 7 of 67 City of Plymouth
Lakes. The Schmidt, Pomerleau and Bass Lakes TMDL has been established in accordance
with Section 303(d) of the Clean Water Act. This TMDL provides waste load allocations
(WLAs) and load allocations (LAs) for these three lakes. Based on the State standard for
nutrients, the TMDL establishes a numeric target of 40 μg/L total phosphorus concentration
for Pomerleau Lake and 60 μg/L total phosphorus for Schmidt and Bass Lakes.
Implementation strategies to meet the goals of this TMDL can be found in Table 2.
TABLE 2. Schmidt, Pomerleau, and Bass Lakes Nutrient Reduction Strategies.
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Rain Gardens Appendix A IV.D-2 Complete (2008)
Shoreline Management and Restoration Projects Appendix A IV.D-2 Complete
Additional Development and Redevelopment Regulations Appendix A IV.D-2 Ongoing
Storm Drain Filters for Schmidt Lake Watershed Appendix A IV.D-2 Complete (2011)
Feasibility Study for ponding in the Bass Lake Watershed Appendix A IV.D-2 Complete (2012)
Schmidt Lake Wetland Restoration Appendix A IV.D-2 TBD
Schmidt Lake Neighborhood Rain garden Project Appendix A IV.D-2 Complete (2011)
Bass and Pomerleau Lakes Alum Treatment Project Appendix A IV.D-2 2019 & 2020
C. Cedar Island, Pike, and Eagle Lakes Nutrient TMDL
Of the three lakes identified in this TMDL (Cedar Island, Pike, and Eagle), only Pike Lake
lies within the City of Plymouth, however, surface water entering Pike Lake will eventually
drain into Eagle Lake. Meeting the goals for Pike Lake is anticipated to meet Plymouth’s
requirements for Eagle Lake. No drainage from Plymouth goes to Cedar Island Lake. In
2002, Pike Lake was listed on the Federal Clean Water Act’s 303(d) list of impaired waters
for aquatic recreation because the lakes exceed the water quality standard for nutrients.
Eagle Lake was added in 2008 for the same reasons. The goal of this TMDL is to quantify
the pollutant reductions needed to meet the water quality standards for nutrients in Cedar
Island, Pike, and Eagle Lakes. This TMDL has been established in accordance with Section
303(d) of the Clean Water Act and provides waste load allocations (WLAs) and load
allocations (LAs) for these three lakes. Based on the State standard for nutrients, the TMDL
establishes a numeric target of 40 μg/L total phosphorus concentration for Eagle Lake and
60 μg/L total phosphorus for Cedar Island and Pike Lakes. Implementation strategies to
meet the goals of this TMDL for Pike and Eagle Lakes can be found in Table 3.
TABLE 3. Pike Lake Nutrient Reduction Strategies.
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Development and Redevelopment Regulations Appendix A IV.D-3 Ongoing
Rough Fish Management Appendix A IV.D-3 TBD
Illicit Discharge Detection including City Record Review Appendix A IV.D-3 Ongoing
D. Medicine Lake Excess Nutrient TMDL
The Medicine Lake watershed is located in the metropolitan area of the Upper Mississippi
River Basin and includes portions of the cities of Plymouth, Medicine Lake, Minnetonka,
Golden Valley, New Hope, and Medina. The outlet of Medicine Lake is the
SWPPP 2017 Page 8 of 67 City of Plymouth
headwater of Bassett Creek. Medicine Lake is the second largest lake in Hennepin County
and is considered the most important recreational water body in the City of Plymouth. The
Medicine Lake watershed (nearly 12,000 acres) is fully developed. Runoff from the
watershed enters the lake from creeks, storm sewer outfalls, and culverts at various points
along the lakeshore. The volume and pollutant levels of storm water runoff from the
watershed, combined with releases of phosphorus from sediments and plants in the lake,
result in periods of poor lake water quality. Available data indicates that Medicine Lake
violates the State’s water quality standards. The combination of high phosphorus and high
chlorophyll-a (a measurement of algae growth) supports including Medicine Lake on the
Minnesota Pollution Control Agency’s (MPCA) impaired waters list.
The Clean Water Act and Environmental Protection Agency (EPA) regulations require
states to develop Total Maximum Daily Loads (TMDLs) for water bodies that are not
meeting water quality standards. The TMDL process establishes the allowable loading of
pollutants for a water body. By following the TMDL process, states can establish controls
to reduce pollution and restore and maintain the quality of the water resource. Therefore, a
TMDL was designed to allow Medicine Lake to meet water quality goals.
The primary water quality target for this TMDL is the average growing season total
phosphorus concentration in Medicine Lake. The State standard is 40 μg/L. The City of
Plymouth has established a goal of 38 μg/L for Medicine Lake. This TMDL has been
developed to meet the 38 μg/L target. The more conservative target of 38 μg/L is
considered an explicit Margin of Safety (MOS) for this TMDL.
TABLE 4. Medicine Lake Nutrient Reduction Strategies.
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Development and Redevelopment Regulations Appendix A IV.D-4 Ongoing
County Road 9/61 Erosion Repair Appendix A IV.D-4 Complete (2007)
Wood Creek Erosion Repair Appendix A IV.D-4 Complete (2009)
Timber Creek Erosion Repair Appendix A IV.D-4 Complete (2010)
Plymouth Creek Water Quality Ponds Appendix A IV.D-4 Complete (2011)
Plymouth Creek Stream Restoration Appendix A IV.D-4 Complete (2012)
Plymouth Creek Stream Restoration – Plymouth Creek Park Appendix A IV.D-4 Complete (2016)
Kilmer Park Street Reconstruction Project Appendix A IV.D-4 Complete (2018)
Neighborhood Drainage Improvement Project Appendix A IV.D-4 Complete (2019)
2020 Street Reconstruction Project Appendix A IV.D-4 In Progress(2020)
E. Shingle Creek & Bass Creek Impaired Biota and Dissolved Oxygen TMDL
The Shingle Creek & Bass Creek Impaired Biota and Dissolved Oxygen TMDL study
addresses the dissolved oxygen impairment in Shingle Creek and biotic integrity
impairments in Shingle and Bass Creeks, in Hennepin County, Minnesota. The goal of this
TMDL is to quantify the pollutant reductions needed to meet State water quality standards
for dissolved oxygen in Shingle Creek and State Index of Biotic Integrity standards in
Shingle and Bass Creeks.
The Shingle Creek watershed covers 44.7 square miles in east-central Hennepin County,
Minnesota. Shingle Creek begins at the junction of Bass Creek and Eagle Creek in the City
of Brooklyn Park, flows easterly, then southerly for a total of 11.3 miles before discharging
into the Mississippi River in Minneapolis. Bass Creek is the outlet of Bass Lake, and is
SWPPP 2017 Page 9 of 67 City of Plymouth
about 2.4 miles long. Bass Creek is formed at the weir that controls the level of Boulder
Ridge Pond, the last in a series of wetlands downstream of Bass Lake. The watershed is
fully developed with dense urban and suburban land uses
Shingle Creek has been substantially altered from conditions documented in the 1855
Public Land Survey. A portion was straightened and dredged in 1910 to serve as County
Ditch #13. Over time most of the rest of the stream has been channelized, widened and
dredged to better convey stormwater discharged to the stream. Bass Creek appears to be an
historically intermittent channel too small to be recorded on the Public Land Survey and
then later ditched to drain wetlands and/or provide agricultural drainage, or it was created
to provide those functions.
A Stressor Identification study evaluated the potential causes of the impaired biotic
integrity of both streams. Potential candidate causes of the impairments that were ruled out
include: temperature, pH, nutrients, turbidity/TSS, and toxic chemicals. Five stressors that
are potential candidate causes were examined in more detail: low dissolved oxygen; altered
habitat; loss of connectedness; altered hydrology; and ionic strength, specifically chloride.
The evidence for altered hydrology is strongest followed closely by low dissolved oxygen
and lack of habitat. While the loss of connectedness and ionic strength are plausible
stressors and are likely contributing to the impairment, there is less direct evidence of their
role.
Hydraulic models for Shingle Creek were developed to assess the conditions resulting in
persistent low dissolved oxygen. A scenario assessment determined that the likely causes
were low-oxygen discharge from headwaters wetlands and excessive sediment oxygen
demand resulting from the overwide channel. Stream restoration on both Shingle Creek
and Bass Creek to create a low-flow channel, add reaeration structures, and enhance habitat
and improvements to headwaters wetlands would have the most impact in increasing
dissolved oxygen and improving biotic integrity.
TABLE 4. Shingle Creek & Bass Creek Impaired Biota and Dissolved Oxygen
Improvement Strategies.
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Development and Redevelopment Regulations Appendix A IV.D-5 Ongoing
Monitoring Appendix A IV.D-5 Ongoing
F. Lake Hiawatha Nutrient TMDL
A TMDL has been developed for Lake Hiawatha to address a nutrient impairment. Chlorophyll-a
or Secchi depth observations coupled with ambient water quality monitoring data indicate that
excess total phosphorus (TP) is causing the impairments in Lake Hiawatha. The City of Plymouth
has been allocated a reduction of 19.6 pounds annually.
TABLE 5. Lake Hiawatha Nutrient TMDL Improvement Strategies.
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
SWPPP 2017 Page 10 of 67 City of Plymouth
G. Upper Minnehaha Creek Watershed Nutrient and Bacteria TMDL
This Total Maximum Daily Load (TMDL) study addresses nutrient impairments in twenty lakes
and an E. coli impairment in Painter Creek within the Minnehaha Creek Watershed District
(MCWD), which is located within the Upper Mississippi River Basin. The City of Plymouth is not
affected by the E. coli impairment. The MCWD covers approximately 178 square miles in
Hennepin and Carver Counties, including parts of Minneapolis, Minnesota and its western suburbs.
The watershed drains to Minnehaha Creek and ultimately the Mississippi River. The water bodies
addressed in this study are located within a distinct hydrologic basin within the MCWD referred to
as the “Upper Watershed,” which drains through agricultural land and suburbs west of Minneapolis
to Lake Minnetonka, which outlets into Minnehaha Creek. The goal of this TMDL is to quantify
the pollutant reductions needed to meet State water quality standards for nutrients in the lakes and
E. coli standards in Painter Creek.
Fifteen of these lakes are defined as deep lakes for which the North Central Hardwood Forest
ecoregion numeric water quality standards are a summer average total phosphorus concentration of
40 μg/L, 14 μg/L chlorophyll-a, and greater than 1.4 meter in Secchi depth. The other six lakes are
shallow, for which the numeric water quality standards are a summer average total phosphorus
concentration of 60 μg/L, 20 μg/L chlorophyll-a, and greater than one meter in Secchi depth.
Nutrient budgets were developed for all twenty lakes along with lake response models to set the
TMDL and Load and Wasteload Allocations. A robust lake and stream monitoring dataset was
available and was the basis of the nutrient budget calculations. Wasteload reductions ranging from
no reduction to a 93 percent reduction and load reductions ranging from no reduction to 79 percent
reduction will be necessary to meet water quality standards.
TABLE 6. Gleason Lake TMDL Improvement Strategies (185lb reduction needed).
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
City View Acres Rain Gardens Appendix A IV.D - 6 Complete (2008)
City View Acres Storm Water Pond Appendix A IV.D - 6 Complete (2008)
Meadow Wood Drainage Improvement Project Appendix A IV.D - 6 Proposed (2020)
Maple Creek Stream Restoration Appendix A IV.D - 6 Proposed (2022)
Chelsea Wood Drainage Improvement Project Appendix A IV.D - 6 Proposed (2022)
19th and Dunkirk Storm Water Pond Enhancement Appendix A IV.D - 6 Proposed (2024)
TABLE 7. Holy Name Lake TMDL Improvement Strategies (5lb reduction needed).
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
TABLE 8. Mooney Lake TMDL Improvement Strategies (50lb reduction needed).
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Pond Maintenance Appendix A IV.D – 6 Complete (2014)
TABLE 9. Kreatz Lake (listed as Snyder in TMDL document) TMDL Improvement
Strategies (3lb reduction needed).
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
SWPPP 2017 Page 11 of 67 City of Plymouth
TABLE 10. Hadley Lake TMDL Improvement Strategies (21lb reduction needed).
Implementation Item SWPPP reference Progress
Annual Education Appendix A 1.c.1 Annually
Street Sweeping Appendix A 6.a.2 Annually
Hawthorne Ponds Rain Garden Appendix A IV.D - 6 Complete (2008)
Candlelight Terrace Street Reconstruction Project Appendix A IV.D - 6 Complete (2019)
MINIMUM CONTROL MEASURES SUMMARY:
This minimum control measures summary lists the existing Best Management Practices (BMP)
chosen by the City of Plymouth (see Appendix B for BMP Summary Sheets). The minimum
control measures outlined in this plan will be met through a variety of measurable goals such as
educational efforts, training programs, and development of ordinances and policies. Measurable
goals and implementation schedules are included in each minimum control measure sheet and
submitted with the annual report.
Minimum Control Measure #1: Public Education and Outreach:
Key to Unique
BMP ID
Numbers
Required BMP Title Permit
Reference
1a-1 Distribute Educational Materials V.G.1.a
1b-1 Implement an Education Program V.G.1.b
1c-1 Education Program: Public Education and Outreach V.G.1.c
1c-2 Education Program: Public Participation V.G.1.c
1c-3 Education Program: Illicit Discharge Detection and Elimination V.G.1.c
1c-4 Education Program: Construction Site Run-off Control V.G.1.c
1c-5 Education Program: Post-Construction Stormwater Management in
New Development and Redevelopment V.G.1.c
1c-6 Education Program: Pollution Prevention/Good Housekeeping for
Municipal Operations V.G.1.c
1d-1 Coordination of Education Program V.G.1.d
1e-1 Annual Public Meeting V.G.1.e
Minimum Control Measure #2: Public Participation and Involvement:
Key to Unique
BMP ID
Numbers
Required BMP Title Permit
Reference
2a-1 Comply with Public Notice Requirements V.G.2.a
2b-1 Solicit Public Input and opinion on the Adequacy of the SWPPP V.G.2.b
2c-1 Consider Public Input V.G.2.c
Minimum Control Measure #3: Illicit Discharge Detection and Elimination:
SWPPP 2017 Page 12 of 67 City of Plymouth
Key to
Unique BMP
ID Numbers
Required BMP Title Permit
Reference
3a-1 Storm Sewer System Map V.G.3.a
3b-1 Regulatory Control Program V.G.3.b
3c-1 Illicit Discharge Detection and Elimination Plan V.G.3.c
3d-1 Public and Employee Illicit Discharge Information Program V.G.3.d
3e-1 Identification of Non Stormwater Discharges and Flows V.G.3.e
Minimum Control Measure #4: Construction Site Stormwater Runoff Control:
Key to
Unique BMP
ID Numbers
Required BMP Title Permit
Reference
4a-1 Ordinance or other Regulatory Mechanism V.G.4.a
4b-1 Construction Site Implementation of Erosion and Sediment Control
BMPs V.G.4.b
4c-1 Waste Controls for Construction Site Operators V.G.4.c
4d-1 Procedure for Site Plan Review V.G.4.d
4e-1 Establishment of Procedures for the Receipt and Consideration of
Reports of Stormwater Noncompliance V.G.4.e
4f-1 Establishment of Procedures for Site Inspections and Enforcement V.G.4.f
4g-1 Erosion and Sediment Control Training
4h-1 Engineering Guidelines for Developers
Minimum Control Measure #5: Post Construction Stormwater Management in New Development
and Redevelopment:
Key to
Unique BMP
ID Numbers
Required BMP Title Permit
Reference
5a-1 Development an Implementation of Structural and/or Non-structural
BMPs V.G.5.a
5b-1 Regulatory Mechanism to Address Post Construction Runoff from
New Development and Redevelopment V.G.5.b
5c-1 Long-term Operation and Maintenance of BMPs V.G.5.c
5d-1 Ordinances
5e-1 NEMO
Minimum Control Measure #6: Pollution Prevention/Good Housekeeping:
Key to Unique
BMP ID
Numbers
Required BMP Title Permit
Reference
6a-1 Municipal Operations and Maintenance Program V.G.6.a
6a-2 Street Sweeping
6b-2 Annual Inspection of All Structural Pollution Control Devices V.G.6.b.2
6b-3 Inspection of a Minimum of 20 percent of the MS4 Outfalls, Sediment
Basins and Ponds Each Year on a Rotating Basis V.G.6.b.3
6b-4 Annual Inspection of All Exposed Stockpile, Storage and Material
Handling Areas V.G.6.b.4
6b-5
Inspection Follow-up Including the Determination of Whether Repair,
Replacement, or Maintenance Measures are Necessary and the
Implementation of the Corrective Measures
V.G.6.b.5
6b-6 Record Reporting and Retention of all Inspections and Responses to
the Inspections V.G.6.b.6
6b-7 Evaluation of Inspection Frequency V.G.6.b.7
SWPPP 2017 Page 13 of 67 City of Plymouth
6c-1 Monitoring
SWPPP 2017 Page 14 of 67 City of Plymouth
APPENDIX A
BMP SUMMARY SHEETS
SWPPP 2017 Page 15 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1a-1
*BMP Title: Distribute Educational Materials
BMP Description:
In conjunction with BMP 1c-1, educational materials will be prepared and distributed to
targeted audiences.
*Measurable Goals:
See BMP 1c-1
Specific Components and Notes:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of
the application due to incompleteness.
SWPPP 2017 Page 16 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1b-1
*BMP Title: Implement an Education Program
BMP Description:
In conjunction with BMP 1c-1, an educational program will be implemented to educate
targeted audiences in Plymouth. Target audiences include all residents and businesses in
the City of Plymouth. Current high-priority target audiences include K-12 students,
winter maintenance contractors, construction contractors, and business owners.
*Measurable Goals:
See BMP 1c-1
Specific Components and Notes:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of
the application due to incompleteness.
BMP Summary Sheet
SWPPP 2017 Page 17 of 67 City of Plymouth
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-1
*BMP Title: Education Program: Public Education and Outreach
Audiences Involved:
All City of Plymouth residents, property owners, local officials, contractors, City
employees, business owners and school children in grades K – 12.
*Educational Goals for Each Audience:
Increase public awareness and understanding of storm water issues within the City.
Inform and educate the public about the impacts on water quality of storm water run off.
Increase public participation in storm water best management practices. Increase public
support for best management practices instituted by the City and other units of
government. Implement the Shingle Creek Chloride, Schmidt, Pomerleau, and Bass
Lakes Excess Nutrient TMDL plan, Cedar Island, Pike, and Eagle Lakes Nutrient TMDL
plan and support the activities of the Shingle Creek Watershed Management
Commission.
*Activities Used to Reach Educational Goals:
Develop and implement an education plan in cooperation with the Bassett Creek, Elm
Creek and Shingle Creek WMOs, Plymouth’s Environmental Quality Committee and a
number of divisions within the City of Plymouth (as enumerated in 1b-1) to integrate
MS4, watershed plans, Plymouth’s Water Resources Management Plan and other water
resource education programs in the City of Plymouth. All six of the Minimum Control
Measures will be addressed in the education plan. Plan will include:
1. Training and outreach in collaboration with other government and non-government
organizations
a) Bassett Creek Watershed Management Organization, Elm Creek
Watershed Management Organization and Shingle Creek Watershed
Management Organization education committees
• West Metro Water Alliance (WMWA)
b) Watershed Partners’ Clean Water MN campaign
c) Street and parking lot salt management workshops through the SCWMC
d) Blue Thumb – PLANTING FOR CLEAN WATER committee and overall
participation
e) CLIMB Theater – Elementary School Education
2. Distribute articles and information on:
a) Stormwater management
b) Illicit discharges
c) Construction site erosion control
d) Post-construction erosion control
e) Salt application practices to protect water quality
f) Shoreline management
g) Composting
h) Pollution prevention
i) Low impact development
j) Landscaping for water quality
k) Storm drains lead to lakes and streams
3. Provide water quality information at City and community events including:
SWPPP 2017 Page 18 of 67 City of Plymouth
a) Environmental Quality Fair
b) Plymouth Home Expo
c) Family Eco-Footprint Learning Center at Plymouth Home Expo
d) City Sampler
e) Music In Plymouth
4. Utilize local media outlets to promote stormwater awareness and to encourage best
management practices.
5. Hold an MS4 public meeting.
6. Provide speakers and workshops for property owners on shoreline, landscaping and
yard care BMPs to protect water quality.
7. Work with area schools to incorporate information on stormwater management into
classroom learning.
8. Highlight stormwater issues through City sponsored community events and programs
that focus on public participation.
a) Volunteer Adopt-A-Storm Drain program
b) Volunteer Adopt-A-Street program
c) Volunteer pet waste clean up at City park
d) Volunteer pet waste station monitor
9. Provide grants to individuals and organizations within the City to promote rain
gardens.
10. Provide stormwater and water quality information to movie audience.
*Activity Implementation Plan
Activity #1
Years 1-5) Collaborate in planning and projects with the education committees of the
Bassett Creek, Elm Creek and Shingle Creek Watershed Management
Organizations.
Years 1-5) Participate in planning and support of metro-wide stormwater education
campaign with Watershed Partners. This includes ads on cable TV, radio and in
newspapers, among other stormwater education initiatives.
Years 2-5) Promote participation in salt application workshops to reduce the amount of
salt applied to streets and parking lots to all applicators in the City and staff.
Activity #2
Year 1-5) Address stormwater management at least once per year in the Environmental
Extra newsletter published one time each year.
Year 1-5) Publish illicit discharge regulations on City web site.
Year 1-5) Publish Requirements for Builders, Remodelers and Property Owners erosion
control brochure.
Year 1, 4) Publish Housekeeping and BMP Guide for Property Managers brochure.
Year 1-5) Publish A salt reduction guide for your business brochure.
Year 1-5) Publish Shoreline buffers protect property and your lake brochure.
Year 1-5) Publish Plymouth Yard Care Guide with sections on back yard composting.
Year 1-5) Publish pollution prevention articles in Environmental Extra.
Year 1-5) Produce engineering memos for each City-approved project that outline
requirements for low impact building and landscaping upon request.
Year 1-5) Publish articles in the Environmental Extra and brochures for workshops and
events on landscaping for water quality.
SWPPP 2017 Page 19 of 67 City of Plymouth
Year 1-5) Articles in Environmental Extra, brochures and lake association newsletters
address the issue that storm drains lead to lakes and streams.
Activity #3
Year 1-5) Include watershed and water quality lessons in classroom curricula of
Environmental Quality Fair host school, including aquatic invertebrate investigation
and watershed experiment. Invite exhibitors with stormwater best management
information to the event.
Year 1-5) Include stormwater, lawn care best management practices and landscaping for
clean water exhibits in the Plymouth Home Expo.
Year 1-5) Include stormwater, lawn care best management practices, streets to streams,
and landscaping for clean water presentations and exhibits in the Family Eco-
Footprint Learning Center at the Plymouth Home Expo and at the City Sampler.
Activity #4
Year 1-5) Submit press releases and news alerts to local media on water quality projects
and issues, including watershed clean up events and student action for water
quality. Schedule appearances on local cable TV channel to highlight water quality
issues, including landscaping for water quality and explanations of watersheds.
Activity #5
Year 1-5) Publish a 30-day notice of MS4 Public Meeting as legal notice in local
newspaper.
Activity #6
Year 1-5) Schedule at least one workshop to address landscaping for water quality for
property owners.
Activity #7
Year 1-5) Provide watershed and water quality lessons in classroom curricula of public
schools, including aquatic invertebrate investigation and watershed experiment.
Participate in Earth Day presentations and game to inform grade 3 students of water
quality issues and best practices.
Activity #8
Year 1-5) Recruit and train volunteers to inspect and clean debris from storm drains in
their neighborhood. Provide educational mailings to all volunteers six times a year.
Year 1-5) Recruit and train volunteers to remove litter from assigned length of City
streets. Place signs along the street to highlight the program and the individual.
Activity #9
Year 1-5) Award grants to property owners to incorporate landscape best management
practices like rain gardens, shoreline plantings, native plant gardens, pervious
pavers, and/or irrigation controllers on their property.
*Performance Measures
Activity #1
• Track number of meetings and joint projects undertaken by collaborators.
SWPPP 2017 Page 20 of 67 City of Plymouth
• Track number of TV, radio and newspaper ads produced and aired by Watershed
Partners’ media campaign.
• Track the number of “hits” on the Watershed Partners’ CleanwaterMN web site.
• Track number of participants in salt reduction workshops.
Activity #2
• Publish stormwater articles at least one time each year in the Environmental Extra
newsletter that is sent to all addresses in the City of Plymouth.
• Maintain and update stormwater information on the City’s web site, including
regulations on illicit discharge.
• Track number of erosion control brochures distributed.
• Track number of Housekeeping and BMP Guide for Property Managers erosion
control brochures are distributed.
• Mail salt management brochure to all addresses receiving commercial billing in
the City.
• Track number of shoreline brochures distributed.
• Distribute Plymouth Yard Care Guide to all new Plymouth residents in new
resident packets. Track number of new resident packets distributed. Mail
Recyclopedia to all addresses in the City every-other year. Track the use of the
City’s yard waste site for dropping off yard waste for composting and for picking
up finished compost.
• Publish pollution prevention articles at least one time each year in the
Environmental Extra newsletter that is sent to all addresses in the City of
Plymouth and in the Recyclopedia that is sent every-other year to all addresses in
the City.
• Track number of engineering memos establishing low impact components
generated.
• Track attendance at workshops and events promoted in the Environmental Extra.
• Track number articles, newsletters and brochures that address the issue of storm
drains leading to lakes and streams.
Activity #3
• Track number of students involved in classroom stormwater curricula.
• Track attendance at Environmental Quality Fair.
• Track attendance at Plymouth Home Expo.
• Track number of materials distributed and drawing entrees at Family Eco-
Footprint Learning Center.
• Track attendance at the City Sampler.
• Track number of requests from lake associations for materials and support.
Activity #4
• Track number of press releases submitted and number of TV appearances made.
Activity #5
• Track number of people attending MS4 public meeting.
Activity #6
• Track number of workshop attendees.
SWPPP 2017 Page 21 of 67 City of Plymouth
Activity #7
• Track the number of students participating in water quality lessons and number of
third grade students participating in Earth Day presentations.
Activity #8
• Track the number of Adopt-A-Storm Drain volunteers.
• Track the number of Adopt-A-Street volunteers.
Activity #9
• Track the number of grants awarded and conduct periodic reviews of completed
grant projects.
Activity #10
• Track number of presentations.
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of
the application due to incompleteness.
SWPPP 2017 Page 22 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-2
*BMP Title: Education Program: Public Participation
Audiences Involved:
See BMP 1c-1
*Educational Goals for Each Audience:
See 1c-1
*Activities Used to Reach Educational Goals:
The City will hold a public information meeting (in conjunction to the annual meeting on
the SWPPP) to update citizens on the City’s progress toward implementing the SWPPP
and to provide information on stormwater related issues.
Technical assistance, cost-share and BMP programs implemented by the City and
watershed organizations within the City will be coordinated with the MS4 SWPPP
activities
*Activity Implementation Plan
See BMP 1c-1
*Performance Measures:
Event and activity participation.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 23 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-3
*BMP Title: Education Program: Illicit Discharge Detection and Elimination
Audiences Involved:
See BMP 1c-1
*Educational Goals for Each Audience:
See BMP 1c-1
*Activities Used to Reach Educational Goals:
See BMP 1c-1
*Activity Implementation Plan
See BMP 1c-1
Performance Measures:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 24 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-4
*BMP Title: Education Program: Construction Site Run-off Control
Audiences Involved:
See 1c-1
*Educational Goals for Each Audience:
See BMP 1c-1
*Activities Used to Reach Educational Goals:
See BMP 1c-1
*Activity Implementation Plan
See BMP 1c-1
Performance Measures:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 25 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-5
*BMP Title: Education Program: Post-Construction Stormwater Management in New
Development and Redevelopment
Audiences Involved:
See 1c-1
*Educational Goals for Each Audience:
See BMP 1c-1
*Activities Used to Reach Educational Goals:
See BMP 1c-1
*Activity Implementation Plan
See BMP 1c-1
Performance Measures:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 26 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1c-6
*BMP Title: Education Program: Pollution Prevention/Good Housekeeping for
Municipal Operations
Audiences Involved:
See 1c-1
*Educational Goals for Each Audience:
See BMP 1c-1
*Activities Used to Reach Educational Goals:
See BMP 1c-1
*Activity Implementation Plan
See BMP 1c-1
Performance Measures:
See BMP 1c-1
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Plymouth Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 27 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1d-1
*BMP Title: Coordinating Educational Programs
*BMP Description:
The City of Plymouth is a party to three joint powers organizations and participates in the
Watershed Partners program. The City is represented on the Bassett Creek Watershed
Management Commission (BCWMC) and technical advisory committee (TAC), the Shingle
Creek Watershed Management Commission (SCWMC) and TAC, as well as the Elm Creek
Watershed Management Commission (ECWMC) and TAC. The City’s Environmental
Education Coordinator also participates on the BCWMC and SCWMC Education and Public
Outreach Committee (EPOC) where Three Rivers Park District is a participant.
The City of Plymouth has also historically coordinated educational mailings with the
Association for Medicine Lake Area Citizens, the Schmidt Lake Association, and the
Gleason Lake Improvement Association.
*Measurable Goals:
The number of area residents participating and attending events.
The number of workshops and events attended by City staff.
Educational brochures flyers
*Timeline/Implementation Schedule:
Years 1-5: Attend BCWMC, SCWMC, and ECWMC meetings and TAC meetings;
participate in EPOC; coordinate with AMLAC and the Schmidt Lake Association.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 28 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 1 – PUBLIC EDUCATION AND OUTREACH
Unique BMP Identification Number: 1e-1
*BMP Title: Annual Public Meeting
*BMP Description:
The City of Plymouth held its annual public meeting on our Storm Water Pollution
Prevention Plan on July 10, 2019. The meeting was advertised 30 days in advance in the
City’s official paper – the Sun Sailor, and on the City’s website.
*Measurable Goals:
The goal of the annual public meeting was to provide residents with an opportunity to review
the City’s SWPPP and offer comments, both verbal and written. One staff member, six
members of the City’s Environmental Quality Committee and no residents attended the
meeting. This BMP is measured by number of people attending.
*Timeline/Implementation Schedule:
Annually in May or June of each year.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 29 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 2 – PUBLIC PARTICIPATION/INVOLVEMENT
Unique BMP Identification Number: 2a-1
*BMP Title: Comply with Public Notice Requirements
*BMP Description:
The City of Plymouth holds annual public meetings in May or June of each year. This is an
opportunity for City residents to review and comment on the City’s Storm Water Pollution
Prevention Plan. The annual public meeting needs to be noticed 30 days prior to the meeting
date.
*Measurable Goals:
This BMP is measured by the number of residents attending. In 2019, zero residents attended
the Annual Public Informational Meeting.
*Timeline/Implementation Schedule:
Annual in May or June of each year.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 30 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 2 – PUBLIC PARTICIPATION/INVOLVEMENT
Unique BMP Identification Number: 2b-1
*BMP Title: Solicit Public Input and Opinion on the Adequacy of the SWPPP
*BMP Description:
A copy of the City’s SWPPP was available for review and comment, although no residents
attended the meeting. The SWPPP is also available during regular business hours at the
Public Works Department at Plymouth City Hall.
*Measurable Goals:
Zero comments were received from residents on the SWPPP in 2019.
*Timeline/Implementation Schedule:
On-going. The City of Plymouth is always willing to accept comments on the adequacy of
our SWPPP.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 31 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 2 – PUBLIC PARTICIPATION/INVOLVEMENT
Unique BMP Identification Number: 2c-1
*BMP Title: Consider Public Input
*BMP Description:
The City of Plymouth holds annual public meetings in May or June of each year. This is an
opportunity for City residents to review and comment on the City’s Storm Water Pollution
Prevention Plan. No comments were received at this time, however, the meeting was
attended by several staff members.
*Measurable Goals:
This BMP is measured by the number of residents commenting on the SWPPP. In 2019, zero
residents attended the Annual Public Informational Meeting and no comments were received
from residents on the plan in 2019. Minor comments were received from EQC.
*Timeline/Implementation Schedule:
On-going. The City of Plymouth is always willing to consider public input on the adequacy
of our SWPPP.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 32 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 3 – ILLICIT DISCHARGE DETECTION AND
ELIMINATION SYSTEM
Unique BMP Identification Number: 3a-1
*BMP Title: Storm Sewer System Map
*BMP Description:
The City has completed detailed mapping of its storm sewer system. The mapping includes
all pipes, outfall and outlet structures. Additionally, the map includes NURP ponds and
Natural Basins (wetlands).
*Measurable Goals:
The storm sewer map is continually update with new information from development plans
(utility plans), City projects, or regular inspections. The City purchased a GPS unit to
improve accuracy of the map.
*Timeline/Implementation Schedule:
This BMP is updated on a weekly basis and its implementation is on-going.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 33 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 3 – ILLICIT DISCHARGE DETECTION AND
ELIMINATION SYSTEM
Unique BMP Identification Number: 3b-1
*BMP Title: Regulatory Control Program
*BMP Description:
Public Works and Engineering staff regularly attend MPCA sponsored seminars on City’s
jurisdiction and responsibilities. Additionally, City staff works with developers and residents
to ensure compliance with water resources regulations at the local, regional, and state levels.
Plymouth City Code Section 725 regulates public and private sewers and drains. Ponds and
wetlands are inspected every 5 years as required by the MPCA. Discharges not consistent
with storm water are investigated. Illicit discharges are addressed through City Code Section
725.
*Measurable Goals:
The number of illicit discharges detected and rectified is measurable.
*Timeline/Implementation Schedule:
This BMP is on-going and is implemented on a daily basis.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 34 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 3 – ILLICIT DISCHARGE DETECTION AND
ELIMINATION SYSTEM
Unique BMP Identification Number: 3c-1
*BMP Title: Illicit Discharge Detection and Elimination Plan
*BMP Description:
At least 20% of all outfalls and ponds in the City are inspected each year through our Pond
Maintenance Program adopted in 2005. Additionally, each inspected outfall is also inspected
for evidences of any illicit discharge.
Evidence of illegal dumping is investigated and possibilities of hazardous wastes are referred
to the Minnesota Duty Officer at 651-649-5451.
The City is in the process of creating a program to remedy illegally dumped materials.
*Measurable Goals:
Staff will attend workshops or seminars on illicit discharge when available.
At least 20% of all outfalls will be annually inspected and investigated for illicit discharge.
This is documented in our Pond Maintenance Files in our Public Works Department. In
2019, approximately 10 square miles of the City’s drainage system was inspected.
A program to remove illegally dumped materials from the drainage system.
*Timeline/Implementation Schedule:
This BMP and potential program is implemented annually during the summer months (May-
Sept.).
Specific Components and Notes:
The City hires and intern to perform inspections and document with photos.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 35 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 3 – ILLICIT DISCHARGE DETECTION AND
ELIMINATION SYSTEM
Unique BMP Identification Number: 3d-1
*BMP Title: Public and Employee Illicit Discharge Information Program
*BMP Description:
Records of all documented illicit discharges are available through the City of Plymouth
Public Works Department during regular business hours. Illicit discharge detection is a part
of the City’s pond maintenance inspection program. City Code Section 725 address’s
discharges to the City’s sewers.
City Code Section 725 is available on the City website. Additionally, a city wide brochure
our article will educate employees, businesses and the general public the hazards associated
with illegal discharges of non-stormwater fluids and illegal dumping.
*Measurable Goals:
Staff will attend workshops or seminars on illicit discharge when available.
At least 20% of all outfalls will be annually inspected and investigated for illicit discharge.
This is documented in our Pond Maintenance Files in our Public Works Department.
City wide brochure or article will reach over 20,000 households and hundreds of businesses.
*Timeline/Implementation Schedule:
This BMP is implemented annually during the summer months (May-September).
Specific Components and Notes:
The City hires and intern to perform inspections and document with photos.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 36 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 3 – ILLICIT DISCHARGE DETECTION AND
ELIMINATION SYSTEM
Unique BMP Identification Number: 3e-1
*BMP Title: Identification of Non-Stormwater Discharge and Flows
*BMP Description:
The City of Plymouth identifies the following non-stormwater discharges as contributors of
pollutants to our small MS4:
1. Lawn watering
2. Individual residential car washing
3. Swimming pool discharges
Over watering lawns may contribute to excess nutrient loading into City ponds, streams,
wetlands, and lakes. The City of Plymouth enforces a sprinkling ordinance to reduce the
contribution of pollutants coming from excess lawn watering. City residents are encouraged
to wash vehicles on grass surfaces and not driveways. Lastly, swimming pool water
discharges are enforced through ordinance and require stilling of the water for 7 days prior to
discharge into the City’s storm drains.
*Measurable Goals:
City Ordinances
Seasonal fines for violations of the sprinkler ordinance
*Timeline/Implementation Schedule:
Annually
Specific Components and Notes:
The City hires and intern to perform inspections and document with photos.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 37 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 a 1
*BMP Title: Ordinance or other Regulatory Mechanism
*BMP Description:
Plymouth City Code (attached) requires an approved erosion control and grading plan for earth
disturbing activities prior to the issuance of grading or building permits (Section 425).
Additionally, subdivisions are required to be reviewed by staff and are subject to various erosion
control requirements including silt fence, rock construction entrances, inlet protection, seed and
mulch, street sweeping , temporary sedimentation basins and other best management practices
(Section 526).
*Measurable Goals:
Documentation of letters, project reviews and administrative fees for non-compliant projects.
Completion of the Erosion Control review and update through the City’s Environmental Quality
Committee.
*Timeline/Implementation Schedule:
Ongoing
Specific Components and Notes:
The City also works with local watershed management organizations to review, inspect, reduce
and/or eliminate erosion from construction sites.
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 38 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 b 1
*BMP Title: Construction Site Implementation of Erosion and Sediment Control BMP’s
*BMP Description:
City Code requires proposed construction develop and implement an onsite erosion control plan.
Additionally, the City requires the qualified developers to provide the City with their SWPPP.
*Measurable Goals:
Compliance by all developments that have an erosion control (or SWPPP) completed for their
project.
*Timeline/Implementation Schedule:
This is typically an on-going procedure.
Specific Components and Notes:
City staff inspects approximately 60 active development sites and numerous individual building
sites on a weekly basis.
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 39 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 c 1
*BMP Title: Waste Controls for Construction Site Operations
*BMP Description:
The City’s prohibits onsite disposal of any construction waste or washing of equipment. Concrete
washout areas are required, and must be properly maintained.
During the commercial site plan review process, drawings are noted to require specific wash out
areas on-site.
*Measurable Goals:
City staff prepares an annual report of all erosion control inspections and violations. This is an
ongoing procedure. The city is in the process of preparing a standard detail for concrete washout
stations.
*Timeline/Implementation Schedule:
Typically, this is an ongoing procedure however most activity takes place during the summer
months.
Specific Components and Notes:
Weekly inspections by staff.
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 40 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 d 1
*BMP Title: Procedure for Site Plan Review
*BMP Description:
The City of Plymouth has established a detailed process for all site plan reviews. All development
plans are submitted to the Community Development Department. They are routed to the Public
Works Department for review of erosion and sedimentation control measures. Reviews include:
erosion control, drainage concerns and implementation of Best Management Practices such as rain
gardens, infiltration basin and green roofs. Approved plans are subject to a pre-construction
meeting at which time staff reviews erosion and sediment control on the approved plan and City
policies. Prior to issuance of a grading permit, erosion and sediment controls such as silt fence and
rock construction entrances are inspected by staff to confirm they are in place. Once project
activity has begun, sites are subject to weekly inspections by City staff.
*Measurable Goals:
All development plans are reviewed (100%). Non-development construction is also reviewed when
staff has concerns.
*Timeline/Implementation Schedule:
This is typically an ongoing procedure, however, our Engineering Guidelines are updated annually,
most recently in January 2020.
Specific Components and Notes:
The City also has a policy to inspect lake front home sites where existing homes are torn down, and
new homes are built.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 41 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 e 1
*BMP Title: Establishment of Procedures for the Receipt and Consideration of Reports of
Stormwater Noncompliance
*BMP Description:
Possible violations of City erosion and sediment control policies are submitted to the City’s erosion
control inspector by other City staff, watershed management organizations, or citizens. All
complaints of possible violations are inspected by staff. If sites are found to be in violation, phone
calls and/or letters are used to contact the project manager (contractor or developer). Continued
non-compliance is subject to a $500.00 administrative penalty and/or stop work order.
*Measurable Goals:
City regularly receives calls from citizens concerned with a specific project. The City does keep
track of the number of calls received, letters sent, administrative penalties applied, and stop work
orders issued.
*Timeline/Implementation Schedule:
This is typically an ongoing procedure.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 42 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4 f 1
*BMP Title: Establishment of Procedures for Site Inspections and Enforcement
*BMP Description:
The City has established a strong inspection program. Annually, in addition to trained and certified
staff, the City has hired summer engineering interns to inspect construction sites biweekly during
the construction season. Violations will be re-inspected after contact is made with the contractor or
developer (i.e. responsible party). Continued violations are subject to a $500.00 administrative
penalty and/or a stop work order.
*Measurable Goals:
Number of all developments inspected and number of inspections during their active period.
Violations is not used as a measurable goal, since the goal is to minimize all violations.
*Timeline/Implementation Schedule:
This is typically an ongoing procedure.
Specific Components and Notes:
Additionally, staff can “flag” sites through the Community Development Department to ensure
follow-up inspections of construction sites.
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 43 of 67 City of Plymouth
Additional BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4-g-1
*BMP Title: Erosion and Sediment Control Training
*BMP Description:
Continued education in erosion and sediment control methods and requirements. Staff is trained, at a
minimum, as an Erosion and Sediment Control Specialist - Inspector/Installer through the University
of Minnesota Sediment and Erosion Control certification program.
*Measurable Goals:
Passing of state test and certification as Erosion and Sediment Control Specialist - Inspector/Installer.
*Timeline/Implementation Schedule:
Bi-annual certification.
Specific Components and Notes:
Staff also attends annual erosion and sediment control conferences and workshops
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works Department
Phone: 763-509-5500
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 44 of 67 City of Plymouth
Additional BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 4-CONSTRUCTION SITE STORMWATER
RUNOFF CONTROL
Unique BMP Identification Number: 4-h-1
*BMP Title: Engineering Guidelines for Developers
*BMP Description:
The City offers developers Engineering Guidelines and literature to assist with compliance of City
policies and to include with submittal of construction plans for review. Guidelines are available
through the Public Works Department or on the City website. Guidelines include:
ST-12 TYPICAL TREATMENT POND DETAIL
ST-16 TYPICAL RAIN GARDEN DETAIL
ST-18 SILT FENCE DETAIL
ST-19 ROCK CONSTRUCTION ENTRANCE DETAIL
*Measurable Goals:
Inclusion of all applicable Engineering Guidelines for sediment and erosion control onto construction
plans
*Timeline/Implementation Schedule:
2006 and ongoing. Evaluated and updated annually as needed.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 45 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 5-POST-CONSTRUCTION STORMWATER
MANAGEMENT IN NEW DEVELOPMENT
AND REDEVELEOPMENT
Unique BMP Identification Number: 5 a 1
*BMP Title: Development and Implementation of Structural and/or Non Structural BMP’s
*BMP Description:
The City of Plymouth has developed a list of potential BMP’s that can be utilized in the city for
development. Additionally, the City of Plymouth has incorporated several BMP’s into various
watersheds.
*Measurable Goals:
The number and type of BMP is used for documentation. The running total is as follows:
Ponds (161), Rain Gardens (63), Filtration/Infiltration Basins (60), Underground Stormwater
Systems (17), Water Quality Monitoring Stations (10), Canada Geese Removal (1000+), Shoreline
Restorations (36), Large Drainage/Erosion projects (6).
*Timeline/Implementation Schedule:
This BMP is part of annual work conducted by the City.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 46 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 5-POST-CONSTRUCTION STORMWATER
MANAGEMENT IN NEW DEVELOPMENT
AND REDEVELEOPMENT
Unique BMP Identification Number: 5 b 1
*BMP Title: Regulatory Mechanism to Address Post Construction Runoff from New
Development and Redevelopment
*BMP Description:
All development and re-development projects greater than 0.5 acres are subject to rate control
requirements and shall have no net increase in runoff for the 2, 10, and 100-year storm events. All
development or redevelopment projects adding or reconstructing an acre or more of impervious
surface shall meet Minimal Impact Design Standards (MIDS).
*Measurable Goals:
Reduction in TSS, phosphorous, and discharge rates leaving the City. Will be monitored as part of
the City’s non-degradation plan and load assessment.
*Timeline/Implementation Schedule:
This BMP is implemented with every plan review, approximately once a week throughout the year.
Specific Components and Notes:
The City of Plymouth contracts for water quality monitoring at over a dozen locations throughout
the city.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 47 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 5-POST-CONSTRUCTION STORMWATER
MANAGEMENT IN NEW DEVELOPMENT
AND REDEVELEOPMENT
Unique BMP Identification Number: 5 c 1
*BMP Title: Long-term Operation and maintenance of BMPs
*BMP Description:
The City has an established Pond Maintenance program and local surface water management plan.
Ponds, outfalls, and outlets are inspected every 5 years. The City budgets funds for maintenance of
previously constructed BMPs such as rain gardens, shoreline restorations, and water quality ponds.
Additionally, the City budgets for both routine water resources projects and long term capital
projects to ensure proper functionality.
The City also requires maintenance agreements for BMPs, both development and others, for long
term maintenance of such structures. Maintenance agreements may be required for rain gardens,
sump manholes, storm water vaults, street and/or parking lot sweeping, or others.
*Measurable Goals:
The City conducts dozens of maintenance projects annually to assess best management practices
associated with our drainage system. Maintenance includes restoring rain gardens and water quality
ponds to their designed condition, repairing stream bank erosion, and removing accumulated
sediments from sump manholes and hydrodynamic separators.
*Timeline/Implementation Schedule:
Maintenance to ensure the long-term operation of BMPs is done on an annual basis. Erosion repair,
pond dredging, removal of sediments from sump manholes, and maintenance of rain gardens and
shoreline restorations on an annual basis ensures the long term viability of these implemented
BMPs.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 48 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 5-POST-CONSTRUCTION STORMWATER
MANAGEMENT IN NEW DEVELOPMENT
AND REDEVELEOPMENT
Unique BMP Identification Number: 5 d 1
*BMP Title: Ordinances
*BMP Description:
The City is in the process of reviewing all related ordinances such as erosion control and lawn
fertilizer application, and preparing to implement new non-degradation policies for all new and
redevelopment.
*Measurable Goals:
This BMP will be measured by a reduction in TSS, phosphorous, and water volume.
*Timeline/Implementation Schedule:
This BMP is part of annual development/redevelopment plan review work conducted by the City.
Specific Components and Notes:
The City of Plymouth submitted a Non-degradation plan to the MPCA on October 1, 2007.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 49 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 5-POST-CONSTRUCTION STORMWATER
MANAGEMENT IN NEW DEVELOPMENT
AND REDEVELEOPMENT
Unique BMP Identification Number: 5 e 1
*BMP Title: NEMO
*BMP Description:
Non point source Education for Municipal Officials. NEMO is an educational program for local
land use officials and addresses the relationship of land use to natural resource protection. The goal
is to present this national program to as many of the City’s decision makers as possible. This
presentation has been made to various City leaders and staff.
*Measurable Goals:
This BMP is measured by changes in City policy that reflect the importance of natural resources.
One example is the City’s proposed non-degradation policy. Additionally, this BMP can be
measured by:
1. Number of NEMO presentations given
2. Number of NEMO presentations requested
*Timeline/Implementation Schedule:
This BMP is part of annual work conducted by the City.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 50 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 a 1
*BMP Title: Municipal Operations and Maintenance Program
*BMP Description:
The City will conduct or attend annual training based on US EPA educational materials on reducing
pollutant runoff from parks, open space, fleet, city-owned buildings, and city development.
In addition, to meet the goals of the Shingle Creek Chloride TMDL, the City will:
1. Annually calibrate spreaders
2. Use the Road Weather Information Service (RWIS) and other sensors such as truck
mounted or hand held sensors to improve application decisions such as the amount and
timing of application where feasible and cost effective.
3. Evaluate new technologies such as pre-wetting and anti-icing as equipment needs to be
replaced. These technologies will be adopted where feasible and practical.
4. Investigate and adopt new products (such as Clear Lane, a commercially available
pretreated salt) where feasible and cost effective.
5. Annually investigate salt application technologies.
*Measurable Goals:
Training provided to staff and number of new BMP’s adopted by the City.
*Timeline/Implementation Schedule:
On-going, at least one event per year.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 51 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 a 2
*BMP Title: Street Sweeping
*BMP Description:
The City of Plymouth has developed a strong Street Sweeping Program. Starting in 2006, all city
streets are swept three to five times (using vacuum street sweepers) during the spring/summer
months. Detailed records are kept of the areas and the amount of materials collected for each area.
The City expects street sweeping to help meet the goals of the following TMDLs:
1. Shingle Creek Chloride
2. Schmidt, Pomerleau, and Bass Lakes Excess Nutrient TMDL
3. Cedar Island, Pike, and Eagle Lakes Excess Nutrient TMDL
4. Medicine Lake Excess Nutrient TMDL
*Measurable Goals:
The quantity of all street sweeping material collected is recorded and tested. Goals are to reduce
these amounts and their phosphorous concentrations.
*Timeline/Implementation Schedule:
During after-spring thaw to mid September.
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works
Phone: 763-509-5992
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 52 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 2
*BMP Title: Annual Inspection of All Structural Pollution Control Devices
*BMP Description:
The City has identified, inventoried, and mapped all of its structural pollution control devices.
These devices are inspected on a regular basis and maintained annually.
*Measurable Goals:
To maintain these devices on a regular basis.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works
Phone: 763-509-5999
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 53 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 3
*BMP Title: Inspection of a Minimum of 20% of the MS4 Outfalls, Sediment Basins and Ponds
Each Year on a Rotating Basis
*BMP Description:
Since 2003, the City has adopted the Plymouth Pond Maintenance Policy which requires the
inspection of all outfall structures. At a minimum, 20% of outcall structures are inspected on an
annual basis.
The City inspected approximately 10 square miles of the drainage system in 2019.
*Measurable Goals:
To inspect at least 20% of all outfall structures.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
Water Resources Manager will hire seasonal interns or a permanent Water Resources Manager to
inspect storm sewer pipe and structures as well as NURP ponds and wetlands per the City of
Plymouth Pond Maintenance Policy.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works
Phone: 763-509-5999
Email: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 54 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 4
*BMP Title: Quarterly Inspection of all Exposed Stockpile, Storage, and Material Handling
Areas.
*BMP Description:
The City inspects all of its sites on a regular basis including the City’s salt stockpiles as required by
the Shingle Creek Chloride TMDL implementation plan and the General Permit Authorization to
Discharge Stormwater Associated with Small Municipal Separate Storm Sewer Systems Under the
National Pollutant Discharge Elimination System/State Disposal System (NPDES/SDS) Permit
Program (MNR040000).
The number of stockpiles or disposal sites is limited to one or two. The City’s salt stockpile is
located 14,900 23rd Avenue North. The remaining stockpiles, storage, and material handling areas
are located at the City Material Disposal Site (13825 Schmidt Lake Road) and the City
Maintenance Yard (14900 23rd Ave N).
The stockpiles, storage, and material handling areas are identified in the MS4Front inventory
system under the Municipal Facilities category.
*Measurable Goals:
Regular, at least quarterly, inspection of all stockpiles, storage, and material handling areas.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Amy Riegel, Senior Engineering Technician
Department: Public Works
Phone: 763-509-5999
E-mail: ariegel@plymouthmn.gov
SWPPP 2017 Page 55 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 5
*BMP Title: Inspection Follow-Up, Including the Determination of whether Repair,
Replacement, or Maintenance Measures are Necessary and the Implementation of
the Corrective Measures
*BMP Description:
In 2003, the City adopted a Pond Maintenance Policy. The Policy requires the City to inspect all of
the basins and structures, and to develop a maintenance schedule for all necessary repairs.
*Measurable Goals:
To comply with the City’s Pond Maintenance Policy.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
Water Resources Manager works in conjunction with maintenance division to determine
maintenance schedule.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 56 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 6
*BMP Title: Record Reporting and Retention of all Inspections and Responses to the Inspection
*BMP Description:
In 2003, the City adopted a Pond Maintenance Policy. The Policy requires that the City provide
regular reports of all inspections and their findings. All records are computerized and linked with
the City’s GIS for ease of reference. The City will follow the MPCA Inspection and Record
Keeping Guidelines.
*Measurable Goals:
A continuously updated data base and map of all inspected water resources facilities, ponds, basins,
and structures. In 2007, our data base was updated to include wetland mitigation areas.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 57 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 b 7
*BMP Title: Evaluation of Inspection Frequency
*BMP Description:
The inspection and evaluation of all of the city water quality ponds, natural basins, pipes, and
structures has been completed. It is expected than an inspection frequency of every five years will
be sufficient to maintain the City’s storm water conveyance system.
*Measurable Goals:
To continue an efficient and routine inspection program.
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 58 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Minimum Control Measure: 6-POLLUTION PREVENTION/GOOD
HOUSEKEEPING
Unique BMP Identification Number: 6 c 1
*BMP Title: Monitoring
*BMP Description:
The City of Plymouth monitors surface water quality at up to 13 sites in the Bassett Creek, Elm
Creek, and Shingle Creek Watersheds. Monitoring assists the City implementation of projects to
address impaired waters.
Water Quality parameters include TSS, P, N, and others. Additionally, the City of Plymouth
supports implementation of the Shingle Creek Chloride TMDL implementation plan through the
Shingle Creek Watershed. The SCWMC monitors water quality at two stations in the watershed
(Zane Ave. and Humboldt Ave. near the outlet). Upon the initiation of the Shingle Creek Chloride
TMDL study, the SCWMC has increased monitoring at these two stations to include grab samples
of chloride and collection of conductivity at 15-minute intervals. The BCWMC and MCWD also
monitor selected water bodies in the City of Plymouth.
*Measurable Goals:
To continue an efficient and routine monitoring program. To implement the Shingle Creek
Chloride TMDL
*Timeline/Implementation Schedule:
On-going
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 59 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings
Unique BMP Identification Number: IV.D - 1
*BMP Title: Impaired Waters Review Process
*BMP Description:
The City of Plymouth will review all discharges from our MS4 system to impaired waters, as
defined by the current USEPA approved 303 (d) list. For this review the City of Plymouth will
utilize our updated Surface Water Management Plan to:
1. Identify the impaired waters that are likely to be impacted by stormwater discharge
2. Use a combination of storm sewer maps and field surveys to identify all potential
stormwater discharges to impaired waters.
3. Delineate the watershed area that contributes to the discharges
4. Evaluate the hydrology, land use and other characteristics of the watershed areas that may
impact the impaired water as a result of a stormwater discharge.
Based on the review above, the City of Plymouth will determine if any changes to the existing
stormwater system or BMPs are needed to minimize the impact of discharges from our MS4 to the
impaired waters. If modifications are necessary, the City of Plymouth will modify our SWPPP and
submit those modifications to the MPCA with the current year’s annual report. In our review, we
will consider timing and long and short term costs. All assumptions, reasoning, and justification
used to reach a conclusion on whether or not SWPPP revisions are necessary will be documented in
the decision making process. A narrative summary of this review will then be prepared, and
identify any associated SWPPP revisions that were made.
Location(s) in SWPPP of detailed information relating to this BMP:
*Measurable Goals:
1. Completion of updated Surface Water Management Plan
2. Prepare a written inventory of impaired waters within the jurisdictional boundaries of the City of
Plymouth
3. Map all impaired waters reasonably affected by discharges from the City of Plymouth.
4. Determine necessary revisions to SWPPP.
5. Prepare a schedule and timeline to incorporate changes to SWPPP
*Timeline/Implementation Schedule:
2008: Complete Surface Water Management Plan
2008: Identify impaired waters
2009: Delineate watersheds contributing to impaired waters
2009: Develop a map of discharges
2010: Complete and evaluation of hydrology, land use, and other characteristics of watershed areas
that may impact the impaired water as a result of storm water discharge.
2010: Include in annual report to MPCA the overview of the impaired waters review and any
changes to the SWPPP which are necessary.
SWPPP 2017 Page 60 of 67 City of Plymouth
Specific Components and Notes:
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.
SWPPP 2017 Page 61 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings and TMDL
Unique BMP Identification Number: IV.D - 2
*BMP Title: Schmidt, Pomerleau, and Bass Lakes Excess Nutrient TMDL
*BMP Description:
The City of Plymouth will review the adequacy of the SWPPP to determine if changes are required
to meet the goals of the Schmidt, Pomerleau, and Bass Lakes Excess Nutrient TMDL.
Location(s) in SWPPP of detailed information relating to this BMP:
*Measurable Goals:
1. Annual Education (see sheet 1.c.1)
2. Street Sweeping
3. Eight (8) Rain Gardens (3 Schmidt, 5 Bass)
4. Fourteen (14) Shoreline Management and Restoration Projects (4 Schmidt, 10 Bass)
5. Additional Development and Redevelopment Regulations
6. Fifty (50) Storm Drain Filters for Schmidt Lake Watershed
7. Feasibility Study for water quality ponding in the Bass Lake Watershed
8. Schmidt Lake Wetland Restoration
9. Schmidt Lake Neighborhood Rain garden Project
10. Bass & Pomerleau Lakes Alum Treatment Project
*Timeline/Implementation Schedule:
2010: Annual Education (see sheet 1.c.1)
2010: Eight (8) Rain Gardens (3 Schmidt, 5 Bass)
2010-2011: Schmidt Lake Wetland Restoration
2010-2011: Schmidt Lake Neighborhood Rain Garden Project
2010-2014: Additional Development and Redevelopment Regulations
2011: Fifty (50) Storm Drain Filters for Schmidt Lake Watershed
2011-2013: Street Sweeping – five (5) vacuum assisted sweeps (see sheet 6.a.2)
2012-2013: Fourteen (14) Shoreline Management and Restoration Projects (4 Schmidt, 10 Bass)
2013: Feasibility Study for water quality ponding in the Bass Lake Watershed
2019: Bass & Pomerleau Lakes Alum Treatment Project – Phase 1
2020: Bass & Pomerleau Lakes Alum Treatment Project – Phase 2
Specific Components and Notes:
Annual cost over 10 years to implement this BMP is estimated to be $300,000.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
SWPPP 2017 Page 62 of 67 City of Plymouth
E-mail: bscharenbroich@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings and TMDL
Unique BMP Identification Number: IV.D - 3
*BMP Title: Cedar Island, Pike, and Eagle Lakes Excess Nutrient TMDL
*BMP Description:
The City of Plymouth will review the adequacy of the SWPPP to determine if changes are required
to meet the goals of the Cedar Island, Pike, and Eagle Lakes Excess Nutrient TMDL.
Location(s) in SWPPP of detailed information relating to this BMP:
See below.
*Measurable Goals:
1. Annual Education (see sheet 1.c.1)
2. Street Sweeping (see sheet 6.a.2)
3. Development and Redevelopment Regulations
4. Rough Fish Management
5. Coordinate efforts with MnDOT, TRPD, and Maple Grove
6. Illicit discharge detection including City Record Review
7. Post official “15 mph” signage
*Timeline/Implementation Schedule:
2011: Annual Education (see sheet 1.c.1)
2011: Street Sweeping (see sheet 6.a.2)
2011: Development and Redevelopment Regulations
2012: Rough Fish Management
2011: Coordinate efforts with MnDOT, TRPD, and Maple Grove
2012: Illicit discharge detection including City Record Review
2012: Post official “15 mph” signage
Specific Components and Notes:
Annual cost over 10 years to implement this BMP is estimated to be $75,000.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 63 of 67 City of Plymouth
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings and TMDL
Unique BMP Identification Number: IV.D - 4
*BMP Title: Medicine Lake Excess Nutrient TMDL
*BMP Description:
The City of Plymouth has reviewed the adequacy of the SWPPP to determine if changes are
required to meet the goals of the Medicine Lake Excess Nutrient TMDL. Several projects have
been completed and are included in the SWPPP to meet the goals of the Medicine Lake TMDL
including education, street sweeping, regulations, erosion repair projects, stream restoration projects
and water quality ponding projects.
Location(s) in SWPPP of detailed information relating to this BMP:
See below.
*Measurable Goals:
1. Annual Education (see sheet 1.c.1)
2. Street Sweeping (see sheet 6.a.2)
3. Development and Redevelopment Regulations
4. Completion of County Road 9/61 Erosion Repair Project
5. Completion of Timber Creek Erosion Repair Project
6. Completion of Wood Creek Erosion Repair and Stream Restoration
7. Completion of Plymouth Creek Water Quality Ponds
8. Completion of Plymouth Creek Stream Restoration
9. Completion of Plymouth Creek Stream Restoration – Plymouth Creek Park
10. Completion of Kilmer Park Street Reconstruction Project
11. Completion of Neighborhood Drainage Improvement Project
12. Completion of 2020 Street Reconstruction Project
*Timeline/Implementation Schedule:
2011: Annual Education (see sheet 1.c.1)
2011: Street Sweeping (see sheet 6.a.2)
2011: Development and Redevelopment Regulations
2007: Completion of County Road 9/61 Erosion Repair Project
2009: Completion of Wood Creek Erosion Repair and Stream Restoration
2010: Completion of Timber Creek Erosion Repair Project
2011: Completion of Plymouth Creek Water Quality Ponds
2012: Completion of Plymouth Creek Stream Restoration
2016: Completion of Plymouth Creek Stream Restoration Project – Plymouth Creek Park
2018: Completion of Kilmer Park Street Reconstruction Project
2019: Completion of Neighborhood Drainage Improvement Project
2020: Completion of 2020 Street Reconstruction Project
Specific Components and Notes:
SWPPP 2017 Page 64 of 67 City of Plymouth
Annual cost over 10 years to implement this BMP is estimated to be $6,200,000.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.
SWPPP 2017 Page 65 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings and TMDL
Unique BMP Identification Number: IV.D - 5
*BMP Title: Shingle Creek & Bass Creek Biota and Dissolved Oxygen TMDL
*BMP Description:
The City of Plymouth has reviewed the adequacy of the SWPPP to determine if changes are
required to meet the goals of the Shingle Creek & Bass Creek Biota TMDL. Most of the
improvements are expected to come through the City’s regulatory program as properties develop
and redevelop.
Location(s) in SWPPP of detailed information relating to this BMP:
See below.
*Measurable Goals:
1. Annual Education (see sheet 1.c.1)
2. Street Sweeping (see sheet 6.a.2)
3. Development and Redevelopment Regulations
4. Monitoring
*Timeline/Implementation Schedule:
2011: Annual Education (see sheet 1.c.1)
2011: Street Sweeping (see sheet 6.a.2)
2011: Development and Redevelopment Regulations
2012: Monitoring (see sheet 6.c.1)
Specific Components and Notes:
Annual cost over 10 years to implement this BMP is estimated to be $500,000.
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.
SWPPP 2017 Page 66 of 67 City of Plymouth
BMP Summary Sheet
MS4 Name: City of Plymouth
Permit Condition: IV.D Section 303 (d) listings and TMDL
Unique BMP Identification Number: IV.D - 6
*BMP Title: Upper Minnehaha Creek Watershed Nutrient and Bacteria TMDL
*BMP Description:
The City of Plymouth has reviewed the adequacy of the SWPPP to determine if changes are
required to meet the goals of the Upper Minnehaha Creek Watershed Nutrient and Bacteria TMDL.
Most of the improvements are expected to come through the City’s regulatory program as properties
develop and redevelop.
Location(s) in SWPPP of detailed information relating to this BMP:
See below.
*Measurable Goals:
1. Annual Education (see sheet 1.c.1)
2. Street Sweeping (see sheet 6.a.2)
3. Development and Redevelopment Regulations
4. Monitoring
*Timeline/Implementation Schedule:
Annual Education Annually
Street Sweeping Annually
City View Acres Rain Gardens (Gleason) Complete 2008
Hawthorne Ponds Rain Garden (Hadley) Complete 2008
City View Acres Storm Water Pond (Gleason) Complete 2008
Pond Maintenance (Mooney Lake) Complete 2014
Candlelight Terrace Street Reconstruction Project Complete 2019
Meadow Wood Drainage Improvement Project (Gleason) Proposed 2020
Maple Creek Stream Restoration (Gleason) Proposed 2022
Chelsea Woods Drainage Improvement Project (Gleason) Proposed 2022
19th and Dunkirk Storm Water Pond Enhancement (Gleason) Proposed 2024
Specific Components and Notes:
Cost to implement this BMP is estimated to be $5,750,000
*Responsible Party for this BMP:
Name: Ben Scharenbroich, Water Resources Supervisor
Department: Public Works Department
Phone: 763-509-5500
E-mail: bscharenbroich@plymouthmn.gov
SWPPP 2017 Page 67 of 67 City of Plymouth
*Indicates a REQUIRED field. Failure to complete any required field will result in rejection of the
application due to incompleteness.