Section VSECTION V
• V. ESTABLISHMENT OF GOALS AND POLICIES
The City has developed a number of goals, strategies, and policies for the management of
storm water within the City. These goals and policies have been developed to complement any
county, regional, or state goals and policies. The goals of the City are as follows:
Goals
1. Minimize public capital expenditures needed to correct flooding and water quality
problems.
2. Identify and plan for means to effectively protect and improve surface and
groundwater quality.
3. Prevent erosion of soil into surface water systems.
4. Promote groundwater recharge.
5. Protect and enhance fish and wildlife habitat and water recreational facilities.
6. Secure the other benefits associated with the proper management of surface and
ground water.
In order to achieve the City's goals for managing storm water, four strategies were developed.
• These strategies will assist the City in targeting its main audiences for the purposes of storm
water management as follows:
Strategies
Cooperation with other agencies: This strategy recognizes that the City is not alone in
managing storm water within its boundaries. There are a number of other local, state,
and federal agencies that also have rules and regulations related to storm water
management. Through this strategy, the City has recognized these other agencies' role
in this endeavor and will cooperate and coordinate with these agencies as deemed
necessary by the City.
Education: This strategy includes educating various groups within the City about
proper storm water management. Education of residents, City Staff, City Council,
business owners, and developers is included in this strategy to assist in meeting the
City's goals.
Regulation: Much of storm water management comes in the form of regulations put on
new or redevelopment within the City. These regulations will also assist the City in
achieving their water management goals. Policies related to the management of storm
water are included in the regulation strategy.
Internal operations: The final strategy relates to the internal operations of the City. By
outlining policies related to how the City's operations will treat and manage storm water,
the City can work to achieve its storm water management goals.
40 The City has identified target audiences for the policies outlined in each strategy. The
target audiences and strategies are as follows:
City of Shorewood Section V — Page 1
WSB Project No. 1459 -23
November 2008
SECTION V
AUDIENCE
Public — Residents and Business Owners
City Staff and City Council
Developers
Review Agencies
STRATEGY
Education, Regulation
Cooperation, Education, Operation
Education, Regulation
Cooperation
Based on the target audience and the strategy, the City has developed a number of
policies. These policies are outlined below.
A. COOPERATION WITH OTHER AGENCIES
There are a number of other local, state, and federal agencies that have rules and
regulations related to storm water management. Through this strategy, the City
recognizes these other agencies' role in this endeavor and will cooperate and coordinate
with these agencies as necessary.
This Plan is in conformance with but does not restate all other agency rules that are
applicable to water quality and natural resource protection. The other agency rules and
policies include rules, policies, and guidelines associated with the following
organizations:
• Minnesota Department of Health www.health.state.mn.us
• Minnesota Pollution Control Agency www.pca.state.mn.us
• Board of Water and Soil Resources www.bwsr.state.mn.us and the Wetland
Conservation Act www.bwsr. state .mn.us /wetlands /wca /index.htmi
• Minnesota Department of Natural Resources www.dnr.state.mn.us
• US Army Corps of Engineers www.mvp.usace. army. mi
• Minnesota Department of Agriculture www.mda.state.mn.us
• US Fish and Wildlife Service www.fws.gov
• Minnehaha Creek Watershed District www.minnehahacreek.org
• Riley Purgatory Bluff Creek Watershed District
http:// www.rileypurgato[ybluffcreek.orq
• Lake Minnetonka Conservation District
http: / /www.Imcd.org
•
•
While these other agency rules, policies, and guidelines are not all restated in this Plan,
they are applicable to projects, programs, and planning within the City. The Minnesota
Stormwater Manual, which is a document intended to be frequently updated, is
incorporated by reference into this Plan and can be found at
www.pca.state.mn.us/ water / stormwater / stormwater- manual.html
City of Shorewood Section V — Page 2
WSB Project No. 1459 -23
November 2008
SECTION V
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•
B. EDUCATION
The purpose of the education strategy in meeting the City's goals is to foster responsible
water quality management practices by educating residents, business owners, City Staff,
City Council, and developers about proper storm water management. If these targeted
audiences recognize their role in responsible storm water management in their homes,
businesses, and practices, it is another means for the City to meet its goals. This
education strategy has also been designed to be in conformance with the NPDES
requirements.
STRATEGY. EDUCATION
No.
Policy
Tar et Audience
1.
The City will continue to implement its public education program
Residents, Business
as part of the NPDES Phase II program.
Owners, Developers,
City Staff and Council
2.
The City will develop and update its website for water resource
Residents, Business
management information.
Owners, Developers
3.
The City will develop and distribute annual newsletter and include
Residents, Business
information in other City mailings aimed at fostering responsible
Owners, Developers
water quality management practices. Topics may include, but not
be limited to:
• Wetland buffers
• Groundwater quality and protection
• Controlling invasive species
• Water conservation and the water cycle
• Proper hazardous waste disposal
• Yard waste management
• Pet waste disposal
• Illicit discharge
4.
The City will collaborate with MCWD, RPBCWD, and LMCD in
Residents, Business
storm water management education efforts.
Owners, Developers
5.
The City will provide annual training opportunities to City Staff
City Staff
regarding housekeeping and construction BMPs and the NPDES
permit requirement.
6. The City will conduct pre- construction meetings with contractors
City Staff,
to review erosion control methods and inspections for projects
Contractors,
that disturb one acre or more for City projects.
Residents
City of Shorewood
WSB Project No, 1459 -23
November 2008
Section V - Page 3
SECTION V
STRATEGY: EDUCATION
No.
Policy
Target Audience
7.
The City will encourage programs aimed at fostering responsible
Business Owners,
water quality management practices by its residents, including
Residents
educating residents on the proper use of fertilizer. Information on
the City's Public Education Program is included in the City's
NPDES Storm Water Pollution Prevention Plan at City Hall.
8.
The City will submit a public notice 30 days in advance and hold
Residents,
an annual public meeting to review the SWPPP, Surface Water
Developers,
Management Plan, and BMPs.
Business Owners
9.
The City will maintain a phone line and website link to report
Residents,
construction site erosion control concerns and waste disposal
Developers,
infractions. The phone number is (952) 474 -3236 and the City's
Business Owners
website is www.ci.shorewood.mn.us
10.
The City will work with landowners through public education
Residents,
efforts to reduce the amount of animal or pet waste entering local
Developers,
water bodies.
Business Owners
11.
Prepare and distribute information on pertinent water
Residents,
management issues to city residents a minimum of one time per
Developers,
year and as required as part of the NPDES Phase II program.
Business Owners
This information will be incorporated into the City's newsletters
and will provide an opportunity for residents to participate in
watershed management activities.
A copy of the description of the program to be implemented by
the City is in the NPDES Storm Water Pollution Prevention Plan
at City Hall.
C. REGULATION
The policies developed in this strategy outline specific storm water management
elements that are required to be implemented through the development and /or
permitting process. The regulation strategy is targeted at the public, developers, City
Staff, and City Council.
STRATEGY: REGULATION
No. I Policy
Target Audience
Overall Regulation Policy
1.
The Minnehaha Creek Watershed District is responsible for
implementing all of their rules within the City of Shorewood. In
addition, the City will verify adherence to policies outlined in this
Developers,
MCWD, City
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City of Shorewood Section V — Page 4
WSB Project No. 1459 -23
November 2008
SECTION V
•
STRATEGY: REGULATION
No.
Policy
Tar et Audience
section.
Rate Control
1.
Future discharge rates from new development and redevelopment
Developers
will not exceed existing discharge rates.
2.
Design calculations for the 1 %, 10 %, and 99% chance storm event
Developers
must be submitted to the City for review and approval. Discharge
rates must be based on pre - development conditions allowing for no
increase compared to existing rates.
3.
The design of major storm water storage facilities shall
Developers
accommodate a critical duration event with a 1 % chance of
occurrence.
4.
The design of new storm sewer systems shall be based on a critical
Developers
duration rainfall event having a 10% chance of occurrence in any
given year for local storm sewer.
5.
For collection systems not designed to meet rate control standards
Developers
(i.e. catch basins) a clogging factor of 50% will be utilized in sizing
intake structures.
6.
No orifice having a diameter less than 8" is allowed in the design of
Developers
rate control structures within the City.
7.
An emergency spillway (emergency outlet) from ponding areas shall
Developers
be installed a minimum of 1 foot below the lowest building opening
and shall be designed to have a capacity to overflow water at an
elevation below the lowest building opening at a rate not less than 3
times the 100 -year peak discharge rate from the basin or the
anticipated 100 -year peak inflow rate to the basin, whichever is
higher.
8.
As part of any new development or redevelopment within the City,
Developers
on -site retention and treatment for storm water runoff will be
required to conform to the policies outlined in this plan unless an
approved off -site regional facility is available to accommodate this
runoff.
Flood Control
1.
The 100 -year high surface water elevation will be derived from the
Developers
City's hydrologic /hydraulic model in Appendix A and information
from the FEMA Flood Insurance Study. For Silver Lake and the
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V - Page 5
SECTION V
STRATEGY: REGULATION
No.
Policy
Targ Audience
Silver Lake branch of Purgatory Creek, the 100 -year high water
elevation developed by the Riley Purgatory Bluff Creek Watershed
District will be used as shown also in Appendix A.
2.
Any new or redevelopment building construction within the City will
Developers
maintain a minimum building opening elevation 3 feet above the
projected 100 -year high water elevation for the area. If this 3 foot
building opening freeboard requirement is considered a hardship,
the standard could be lowered to 2 feet if the following can be
demonstrated:
• That, within the 2 -foot freeboard area, storm water storage is
available which is equal to or exceeds 50% of the storm water
storage currently available in the basin below the 100 -year
elevation.
• That a 25% obstruction of the basin outlet over a 24 hour period
would not result in more than 1 foot of additional bounce in the
basin.
• An adequate overflow route from the basin is available that will
provide assurance that one foot of freeboard will be maintained
for the proposed low building opening.
3.
Any new development or redevelopment in the City must set
Developers
minimum basement floor elevations to an elevation that meets the
following criteria:
• The basement floor will be four feet (4') above the currently -
observed groundwater elevations in the area (FHA policy).
• The basement floor elevation will be two feet (2') above the
elevation of any known historic high ground water elevations for
the area. Information on historic high groundwater elevations
can be derived from any reasonable sources, including
piezometer data, soil boring data, percolation testing logs, etc.
• For areas outside of the RPBCWD boundaries, the basement
floor elevation will be one foot (1') above the 100 -year high -
water elevation for the area unless it can be demonstrated that
this standard creates a hardship, and that the basement floor
will be one foot (1') above the highest anticipated groundwater
elevation that could result from high surface water elevations
elevating groundwater elevations in the area during the 100 -
year critical duration rainfall event. The impact of high surface
water elevation on groundwater elevations in the vicinity of the
structure can take into consideration the site's distance from the
floodplain areas, the soils, the normal water elevation of surface
depressions in the areas, the static groundwater table, and
historic water elevations in the area.
• For areas within the RPBCWD boundaries, t he low floor
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City of Shorewood Section V — Page 6
WSB Project No. 1459 -23
November 2008
SECTION V
•
•
STRATEGY: REGULATION
No.
Policy -- Target
Audience
elevation must be a minimum of 2 feet above the calculated
100 -year flood frequency elevation.
4.
No structure (temporary or permanent), fill (including fill for roads
Developers
and levees), deposit, obstruction, storage of materials or
equipment, or other uses may be allowed as a conditional use that
will cause any increase in the stage of the 100 -year flood or cause
an increase in flood damages in the reach or reaches affected.
5.
The City may allow an outlet to land locked basins, provided that
Developers
the discharge rate from these basins not exceed the 10 -day, 100 -
year average daily run -off rate and that it can be demonstrated that
this discharge will not significantly impact the downstream flood
profile.
6.
The City will require compensatory storage equal to storage losses
Developers
resulting from floodplain fill as part of any new development. This
compensatory storage must be provided in a suitable location so as
not to increase the 1 00- ear flood lain elevation for the area.
7.
The City will revise its subdivision ordinance to direct the developer
Developers, MCWD
to provide the MCWD with a copy of the preliminary plat.
Water Quality Treatment
1.
Treatment of storm water to NURP guidelines is required prior to
Developers
storm water discharge to a lake, stream, or wetland and prior to
discharge from the site as part of development. The NURP
guidelines for the design of storm water treatment basins are as
follows:
a. A permanent pool ( "dead storage ") volume below the
principal spillway (normal outlet) which shall be greater than
or equal to the runoff from a 2.5 -inch storm over the entire
contributing drainage area assuming full development.
b. A permanent pool average depth (basin volume /basin area)
which shall be > 4 feet, with a maximum depth of < 10 feet.
C. Basin side slopes above the normal water level should be
no steeper than 3;1, and preferably flatter. A basin shelf
with a minimum width of 10 feet and 1 foot deep below the
normal water level is recommended to enhance wildlife
habitat, reduce potential safety hazards, and improve
access for long -term maintenance.
d. To prevent short- circuiting, the distance between major
inlets and outlets shall be maximized.
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 7
SECTION V
STRATEGY. REGULATION
No.
Policy
Tar et Audience
2.
New storm water management ponds that are constructed as part
Developers
of private development shall be covered by drainage and utility
easements that are dedicated to the City.
3.
The City will cooperate with the MPCA and other outside
City, MPCA
organizations to develop Total Maximum Daily Load (TMDL) plans
for the listed impaired waters that receive storm water from the City.
4.
The City will require the inclusion of skimmers in the construction of
Developers
new pond outlets, and add skimmers to the existing system
whenever feasible and practical to prevent floatables from being
discharged downstream. Skimmer structures will have a minimum
four -inch (4 ") overlap and the maximum one -year storm event
discharge velocity should not exceed zero point five feet (0.5') per
second. The use of skimmer structures other than wood baffles will
be encouraged unless the baffle structure is properly designed.
5.
The City will include provisions for coarse sedimentation and
Developers
skimming floatable materials prior to storm water discharge to lakes
and DNR- protected wetlands. Skimmers will be designed to skim
the one -year storm event. This requirement will apply in all cases
except where it is deemed not feasible or not practical to do so.
Considerations for variance to this policy will only be made in cases
where the direct drainage area is limited in size and the probability
that a significant pollutant discharge from the area to areas outside
the City would be extremely unlikely. The use of skimmer
structures other than wood baffles will be encouraged unless the
baffle structure is properly designed.
6.
The City has adopted the RPBCWD water quality goals for Silver City Staff
Lake. These goals are as follows:
Water Quality: TSI =83
Recreation Goal: Canoeing and aesthetic viewing
Aquatic Communities: Preserve lake's wildlife habitat
Water Quantity: Manage for regional flood
Wildlife: Protect existing wildlife
These goals and information about the lake is included in the Silver
Lake Use Attainability Analysis (May 2003) which is available in the
Water Resource Library.
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City of Shorewood Section V — Page 8
WSB Project No. 1459 -23
November 2008
SECTION V
•
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•
Infiltration/Volume Control
1.
Abstraction via infiltration, evapotranspiration, capture, and /or reuse
Developers
of one inch of rainfall from the site or on a regional basis upon
development or redevelopment is required for projects that increase
storm water runoff volume, provided that past and existing land use
practices do not have a significant potential to contaminate the
storm water runoff and the soil characteristics are suitable for
infiltration.
2.
New development and redevelopment shall consider and
Developers
incorporate to the extent practical and feasible low impact
development (LID) techniques. The LID techniques must be
reviewed and approved by the City as part of the plan review
process. A maintenance plan for these features will be submitted to
the City for review and approval.
3.
The amount of allowable impervious surfaces within new
Developers
development will be regulated according to the City's ordinances.
4.
The City intends to use both designated and non - designated areas
City, MPCA
to store storm water runoff in the 100 -year event. These areas
include general depressions, low points, and streets where
structures and /or property are not damaged and any inundation will
only be temporary in nature.
Wetlands
1.
Wetlands will be protected within the City boundaries to assure that
Developers,
the value of wetlands in relation to their surface water quantity
Residents
benefits are not significantly impacted by development.
2.
The City will encourage land owners to maintain wetlands and open
Developers,
space areas for the benefit of wildlife. The City will utilize the
Residents
Planning Commission and Land Conservation and Environment
Committee members to promote this objective.
3.
Effective May 1, 2008, the MCWD is the Local Governmental Unit
Developers,
(LGU) for areas of the City within the Riley Purgatory Bluff Creek
Residents
Watershed District. The District will manage wetlands in
conformance with Minnesota Rules Chapter 8420 as developed by
the Board of Water and Soil Resources. Any redevelopment in the
City of Shorewood involving wetland alterations will be subject to
the MCWD procedures for such activities, including regulation,
monitoring, and control.
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 9
SECTION V
4.
A 35 -foot buffer is required around all wetlands, watercourses, and
Developers,
lakes upon development as outlined in the City's wetland
Residents, City
development ordinance in Appendix F.
5.
Development within the City of Shorewood is required to conform to
Developers
the Wetland Development Ordinance in Appendix F.
6.
The Minnehaha Creek Watershed District has developed a
City Staff,
Functional Assessment of Wetlands report for the wetlands within
Developers
the City. This assessment information will be utilized on a case -by-
case basis as development is proposed.
7.
Based on the Minnehaha Creek Watershed District Functional
City Staff
Assessment of Wetlands report, wetlands that were identified as
having wetland restoration potential included the following and are
shown on the map in Appendix B:
PID # Wetland ID #
053 - 2511723220014 D- 117 -23 -25 -003
053 - 2511723220016 D- 117 -23 -25 -003
053 - 2511723220017 D- 117 -23 -25 -003
053 - 2511723220018 D- 117 -23 -25 -003
053 - 2511723220061 D- 117 -23 -25 -003
053 - 2611723140011 D- 117 -23 -26 -008
053 - 2611723140012 D- 117 -23 -26 -008
053 - 2611723140014 D- 117 -23 -26 -008
053 - 2911723340001 D- 117 -23 -29 -002
053 - 2911723340006 D- 117 -23 -29 -002
053 - 2911723340011 D- 117 -23 -29 -002
053 - 2911723340012 D- 117 -23 -29 -002
053 - 2911723430001 D- 117 -23 -29 -002
053 - 3211723120024 D- 117 -23 -32 -037
053 - 3211723120025 D- 117 -23 -32 -037
053 - 3211723120026 D- 117 -23 -32 -037
053 - 3211723120027 D- 117 -23 -32 -037
053 - 3211723120028 D- 117 -23 -32 -037
053 - 3211723120031 D- 117 -23 -32 -037
053 - 3211723140043 D- 117 -23 -32 -018
053 - 3211723340031 D- 117 -23 -32 -018
053 - 3211723340035 D- 117 -23 -32 -018
053 - 3211723340036 D- 117 -23 -32 -018
053 - 3211723340039 D- 117 -23 -32 -020
053- 3211723340051 D- 117 -23 -32 -020
053 - 3211723340056 D- 117 -23 -32 -020
053 - 3211723410003 D- 117 -23 -33 -029
053 - 3211723410003 D- 117 -23 -33 -040
053 - 3211723430004 D- 117 -23 -32 -018
053 - 3311723210024 D- 117 -23 -33 -018
053 - 3311723220035 D- 117 -23 -33 -018
053 - 3311723220036 D- 117 -23 -33 -018
053 - 3311723230018 D- 117 -23 -33 -031
053 - 3311723230021 D- 117 -23 -33 -031
•
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City of Shorewood Section V — Page 10
WSB Project No. 1459 -23
November 2008
SECTION V
•
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City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 11
053 - 3311723230023 D- 117 -23 -33 -031
053 - 3311723230024 D- 117 -23 -33 -031
053 - 3311723310006 D- 117 -23 -33 -031
053 - 3311723320015 D- 117 -23 -33 -031
PID # Wetland ID #
053 - 3311723320017 D- 117 -23 -33 -031
053 - 3311723320020 D- 117 -23 -33 -031
053 - 3311723330002 D- 117 -23 -33 -029
053 - 3311723330002 D- 117 -23 -33 -040
053 - 3311723330017 D- 117 -23 -33 -029
053 - 3311723330017 D- 117 -23 -33 -040
053 - 3311723330017 D- 117 -23 -33 -045
053 - 3411723230045 D- 117 -23 -34 -002
053 - 3511723430021 D- 117 -23 -35 -015
As grants or other funding becomes available, the City will
undertake projects to restore these wetlands. These wetlands
could also be restored as part of a development plan.
Although there is no funding source currently identified for this goal,
it is included as CIP No. 15 in Table VI -1.
8.
The City will complete a wetland functions and values assessment
City Staff,
for the wetlands within the RPBCWD.
RPBCWD
This is identified as No. 4 on Table VI -3.
9.
The City adopts the MCWD MCRAM and the most recent BWSR
methodology for wetland classification.
Groundwater
1.
The City will promote and coordinate with other agencies the
City Staff
continuation of existing groundwater monitoring, inventorying or
permitting programs.
2.
The City will encourage the development of spill prevention, control,
City Staff,
and counter measure plans that are consistent with State and /or
Residents,
Federal regulations.
Developers
This is identified as No. 11 on Table VI -3.
3.
The City will provide assistance to State or other governmental
City Staff
agencies in resolving groundwater quality problems.
4.
The City will encourage preservation of wetlands, ponds and parks
Residents,
to encourage infiltration of precipitation in areas where land use is
Developers
not anticipated to adversely affect surface water runoff.
5.
The City of Shorewood will cooperate with Hennepin County
City Staff
Environmental Health Department to insure that all unsealed or
improperly abandoned wells within the watershed are properl
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 11
SECTION V
•
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City of Shorewood Section V — Page 12
WSB Project No. 1459 -23
November 2008
sealed. Technical requirements for the abandonment of these wells
will be in conformance with the Minnesota Department of Health
Water Well Code.
The costs for this are included in No. 11 on Table VI -3.
6.
The City of Shorewood will work with Hennepin County to develop a
City Staff
wellhead protection plan in accordance with State requirements.
The costs for this are included in No. 11 on Table VI -3.
Erosion and Sediment Control
1.
For activities that disturb one acre or more of land, the City shall
Developers
require the submission and implementation of a Storm Water
Pollution Prevention Plan (SWPPP) in conformance with the MPCA
NPDES rules to the City. These plans shall conform to the general
criteria set outlined in the Minnesota Pollution Control Agency
"Protecting Water Quality in Urban Areas ", Surface Water
Management Ordinance, and the NPDES Construction Site permit.
2.
For projects that disturb 5,000 sf of land or greater, excavate or fill
Developers
more than 50 cubic yards, or result in more than 300 linear feet of
trenching or earth disturbance, an erosion control permit from the
City is required.
3.
The City will conduct erosion control inspections in conformance
Developers, City
with the NPDES permit for all projects that require an NPDES
Staff
construction permit.
4.
The City of Shorewood will develop and adopt an erosion and
Developers,
sedimentation control ordinance to be consistent with State and
Residents
local rules. A copy of the City's erosion ordinance will be included
in Appendix F once it is available.
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City of Shorewood Section V — Page 12
WSB Project No. 1459 -23
November 2008
SECTION V
•
•
D. INTERNAL OPERATIONS
The City's internal operations can have a significant impact on storm water management. This
strategy is targeted primarily at the City with some areas targeted at the public and/or another
agency. These policies are aimed at operation and maintenance activities associated with
water resource management within the City.
Many of these policies are policies that are already in place through the previous Storm water
Management Plan. Other policies have been developed as part of the City's MS4 permit and
the subsequent SWPPP. This list may need to be modified once the MCWD finalizes their new
rules.
Policies that are new are identified with an asterisk ( *) in the list below. It is difficult to quantify
the effects these changes will have due to the large number of variables involved. The City
generally has policies and procedures in place to minimize negative impacts to water resources
within the City. It is likely the additional policies and procedures will further reduce negative
impacts to water resources within the City.
STRATEGY. INTERNAL OPERATIONS
No.
Policy
Source /Rationale
1.
The City will sweep the streets at least once annually and
City Staff
record the results. Areas that need more frequent sweeping
will be swept as needed.
2. *
The City will inspect 20% of its storm water treatment basins,
City Staff
structural pollution control devices, outfalls, and ponds every
year on a rotating basis. Maintenance will be conducted as
necessary.
The costs for this activity are included in No. 16 of Table VI -2.
3.
The City prefers to use regional detention and treatment areas
City Staff
rather than site specific detention areas where feasible. The
City recognizes that development of these areas will likely be
incorporated into development activity and not initiated
independently by the City.
4.
The City requires as- builts of all ponding areas and
City Staff,
designated emergency overflows.
Developers
5. *
The City will develop an ordinance to address illicit discharges
City Staff
and non -storm water discharge to the storm sewer system.
6. *
The City will develop a storm water management ordinance.
City Staff
7. *
The City will maintain and update its storm sewer map, City Staff
including storm sewer pipes, outfalls, ponds, conveyances,
water bodies on an annual basis.
The costs for this activity are included in No. 7 of Table VI -2.
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 13
SECTION V
STRATEGY. INTERNAL OPERATIONS
No.
Policy
Source /Rationale
8.
The City will conduct visual inspections of storm water
City Staff
discharges on City -owned land annually and record results of
inspections in conformance with the City's MS4 SWPPP.
The costs for this activity are included in No. 16 of Table VI -2.
9.
The City will contact the MPCA State Duty Officer at 1 -800-
City Staff
422 -0798 to report any hazardous material spills or
discharges in conformance with the City's MS4 SWPPP.
10.
The City will annually inspect and maintain any exposed
City Staff
stockpiles and storage areas on City property to prevent
erosion and discharge into the storm sewer system or water
body in conformance with the City's MS4 SWPPP.
11.
The City will maintain and submit annual inspection reports,
City Staff
maintenance reports, and other needed documentation in
conformance with the NPDES permit and the MCWD
requirements. This will include annually reporting of the
progress towards meeting the MCWD goals for reduction in
annual phosphorus loading:
Lake Minnetonka Watershed 50 lbs.
Lake Virginia Watershed 4 lbs.
Christmas Lake Watershed 3 lbs.
12.
The City Staff will review and adjust as necessary mowing,
City Staff
fertilizing, and herbicide application practices to reduce
organic and pollutant discharges to the storm sewer and water
bodies.
The cost for this activity is included in No. 9 on Table VI -3.
13.
The City will review road salt application practices and
City Staff
consider alternative products as they become available.
The cost for this activity is included in No. 10 on Table VI -3.
14. *
The City will participate, to the extent deemed necessary by
City Staff
the City, in TMDL studies that affect land use within its
borders as these studies are completed.
15. *
The City will encourage homeowners with properties adjacent
Residents
to water resources to establish a vegetative buffer strip at the
shoreline. This strip should consist of native vegetation to
limit erosion and nutrient transport across the buffer strip.
•
s
City of Shorewood Section V — Page 14
WSB Project No. 1459 -23
November 2008
SECTION V
•
•
STRATEGY: INTERNAL OPERATIONS
No.
Policy
Source /Rationale
16. *
The City will implement its NPDES Storm Water Pollution
City Staff
Prevention Plan ( SWPPP). The SWPPP is incorporated by
reference and is available in the Water Resource Library at
City Hall.
The costs for this activity are included in No. 19 of Table VI -2-
17.
The City will work with the Minnehaha Creek Watershed
City Staff
District and Riley Purgatory Bluff Creek Watershed District to
assure adequate inspection, maintenance and repair of all
ditches under their jurisdiction within the City.
The costs for this activity are included in No. 16 of Table VI -2.
18.
The City of Shorewood prefers the development of municipal
City Staff,
drainage systems whenever possible to the development of
Developers
private drainage systems. Design of drainage systems shall
attempt to accommodate existing drainage systems including
the lines. Existing drainage systems will be protected and
drainage perpetuated.
19. *
The City will adopt the MCWD goal to reduce phosphorus
City Staff, MCWD
loading by 50 pounds annually within the City by a
combination of existing storm water treatment ponds that have
been constructed, exploring other options for additional ponds
that will exceed treatment standards, and implementing a fall
street sweeping program. The City will report annually to the
MCWD about the effectiveness of these BMPs and the
progress made by each to reduce phosphorus loading.
20.
The City will work with the MCWD to monitor shoreline
Residents
conditions on Christmas Lake.
21. *
Although the City is fully developed, the City will continue to
City Staff
look for opportunities to acquire additional open space and
enhance existing open space. The City will incorporate into
future park and open space improvement plans, water quality
protections consistent with MCWD rules. These activities will
be guided by the City's overall Comprehensive Plan which will
ado t the Surface Water Management Plan by reference.
22. *
In addition to zoning requirements, buffer requirements may
City Staff, MCWD
place additional restrictions on properties. The MCWD is
responsible for reviewing and enforcing wetland buffer
requirements,
City of Shorewood
WSB Project No. 1459 -23
November 2008
Section V — Page 15