STORMWATER MANAGEMENT PLAN
TEMPLATE
April 2012
Written by
Linsey Payne,
Masters Student Intern, University of Oregon
Contact:
Pamela Wright
C/o DEQ 165 East 7th Avenue, Suite 100
Eugene, OR 97401
Wright.pamela@deq.state.or.us
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Acknowledgments
The development of this template was a collaborative effort that benefited from the
insights, experience, and expertise of a number of professionals. We would like to thank the
following people for the time and attention to detail they expended to make this a
technically accurate and easy to use document.
Linsey Payne, University of Oregon
Derek Godwin, Extension Oregon Sea Grant
Megan Kleibacker, Extension Oregon Sea Grant
Maria Cahill, Green Girl Land Development Solutions
Amanda Ferguson, City of Cottage Grove
Ron Bradsby, City Engineer Cottage Grove
Denise Walters, City of Creswell
Roy Sprout, City of Creswell
Michael Adams, City of Sweet Home
Rob Emmons, City of Lebanon
Pamela Wright, Oregon Department Environmental Quality
Chris Bayham, Oregon Department Environmental Quality
Benjamin Benninghoff, Oregon Department Environmental Quality
Don Yon, Oregon Department Environmental Quality
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TABLE OF CONTENTS
Using this Template............................................................................................................................ III
Purpose ............................................................................................................................................................... IV
Integrating SWMP Template and TMDL Implementation Plan ...................................................... V
How to use this template ............................................................................................................................. VI
Stormwater Management Plan ......................................................................................................... 7
USING THIS TEMPLATE
This Stormwater Management Plan Template (SWMP Template) was developed through a
combined effort of the Oregon Department of Environmental Quality (DEQ), the University
of Oregon, the Oregon State Extension Sea Grant Program, the City of Cottage Grove, the
City of Creswell, and the City of Eugene. In addition to managing stormwater for flood
protection, this SWMP Template incorporates water quality measures to address Total
Maximum Daily Load (TMDL) pollutants, especially temperature, bacteria and mercury.
The intended audience is cities with populations between 10,000 and 50,000, not covered
by a MS4 permit forAPPENDIX B: Storm Water Phase II Regulations (Append E). Non-MS4
Phase II cities with populations fewer than 10,000 are intended to adopt applicable
portions of the template which apply to their stormwater goals.
TEMPLATE ORGANIZATION
This template is organized into two major sections. Section A, which includes 4 chapters,
outlines the conditions and context for why your watershed is regulated and helps you
clearly define appropriate regulations for your community. Section A “sets the stage” for
Section B, which contains 7 chapters and details the means and methods which a
jurisdiction intends to implement to meet the TMDL.
Once edited, Section A Supporting Information of the SWMP document is intended for
adoption by your city council as a refinement document to the comprehensive plan and
must go through a formal review process by the City Council to receive any changes. On the
other hand, Section B, which includes the Implementation Work Plan, Design Manual, and
Annual Reports to DEQ (Appendices A, B and C) may be updated by staff as needed. Section
B contains the information that, after some years of implementation, will need to be
adjusted to improve effectiveness as experience builds and conditions change.
Page III
PURPOSE
The purpose of this template is to assist Oregon’s small cities meet the DEQ’s stormwater
requirements for the Total Maximum Daily Load (TMDL) Implementation Plans. The
SWMP Template includes methods for meeting the six TMDL minimum stormwater control
measures required for cities with populations over 10,000 and an additional program
management measure. The six stormwater control measures are: (1) Public education, (2)
Public involvement, (3) Illicit discharge detection, (4) Sediment and erosion control, (5)
Post-construction control, and (6) Pollution prevention/good housekeeping.
To ensure compliance with DEQ’s TMDL Implementation Plan and Water Quality
Management Plan requirements, your SWMP must1:
(1) Identify the management strategies the City will use to achieve load allocations and
reduce pollutant loading;
(2) Provide a timeline for implementing management strategies and a schedule for
completing measurable milestones;
(3) Provide for performance monitoring with a plan for periodic review and revision of
the implementation plan;
(4) To the extent required by ORS 197.180 and OAR chapter 340, division 18, provide
evidence of compliance with applicable statewide land use requirements; and
(5) Provide any other analyses or information specified in the Willamette TMDL Water
Quality Management Plan.
Note: For pollutant sources subject to permit requirements in ORS 468B.050, waste load
allocations and other management strategies will be incorporated into NPDES permit
requirements.
If your city does not have system development charges or a stormwater fee here are some
things to consider when determining if stormwater-specific funding could benefit your
program.2

General fund revenues are derived primarily from a variety of sources which can be
significantly impacted by a struggling economy. As a result, stormwater programs
which are heavily dependent on general fund revenues will be similarly affected.
Stat. Auth.: ORS 468.020, ORS 468B.020, ORS 468B.030, ORS 468B.035 & ORS 468B.110
Stats. Implemented: ORS 468B.020, ORS 468B.110, Hist.: DEQ 18-2002, f. & cert. ef. 12-20-02; DEQ 10-2011, f.
& cert. ef. 7-13-11
2 Maintaining your Stormwater Management Program in a Struggling Economy. Robert B. Taylor, Jr., Hazen
and Sawyer, P.C., Boca Raton, Florida. StormCon 2011 Conference Paper.
http://www.stormcon.com/papers/sc11_papers/stormwater_program_management/Taylor_P11.pdf
1
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Alternative funding sources, such as stormwater utility user fees or special
assessments are far more insulated from swings in the economy, since these funds
are not based directly on property valuations or economic activity. Thus,
stormwater utility fees and/or special assessments may offer a more stable means
of funding a stormwater program, particularly if the responsibilities and activities of
the program are largely unrelated to economic conditions.
Review and inspection fees are not adequate as an effective strategy for addressing
the primary source of program funding, but they can be used as a supplemental
means of funding a program. These fees can also be related specifically to some of
the unique activities necessary to support development, and thus, the cost of the
service can be directly borne by the TMDL load allocations /reductions for mercury
and bacteria. If you have a utility, index (or at least periodically increase) your rates,
so as not to fall behind and find yourself “cash strapped”. Build some reserves which
can be used for difficult situations and/or to take advantage of favorable
construction market conditions.
If interest rates and/or construction market conditions warrant, consider shifting
from “pay as you go” on capital improvements to issuing debt to accelerate your
program. This will allow you to get construction done at those bargain prices while
paying the debt service out of those steady user-based revenues (if you have a
utility).
INTEGRATING SWMP TEMPLATE AND TMDL IMPLEMENTATION PLAN
The purpose of this template is not to increase your workload or require you to rewrite
your TMDL Implementation plan. If your city is close to, or anticipates reaching a
population over 10,000 in the next five to ten years, however, you should prepare to meet
the six minimum control measures for stormwater. The level of detail presented in this
SWMP Template is recognized by DEQ as the appropriate level of effort and provides
sufficient description to evaluate whether a management strategy will help a municipality
meet their load allocation.3. Your DEQ Basin Coordinator will work with you to integrate or
replace the 6 stormwater elements in your TMDL Implementation Plan with this Template.
Examples follow.
If your TMDL Implementation Plan_____________
Make this adjustment.
Has barely considered the 6 minimum control
measures,
Adopt the template in its entirety, and
implement one element per year or two until
you have addressed all six.
Has a detailed work plan for the 6 minimum
Make minor adjustments to your TMDL
Implementation Plan, ensuring the key points
3
ORS 340-042-0080
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control measures,
in the template have been included.
Has included most the 6 control measures and
excluded the ones which irrelevant to your city.
In your next annual report, explain why the
excluded elements are not of concern in your
jurisdiction
Considering the population of the Willamette Valley is predicted to double by 2050, we
assume all cities in the Valley are growing and need to manage stormwater as they expand
or increase density. Retrofitting stormwater facilities is extremely expensive.
If you are planning to develop or update your stormwater master plan or management
plan, this template guides jurisdictions toward the simplest and most cost effective means
of treating stormwater at the source.
HOW TO USE THIS TEMPLATE
Documents you may find helpful when editing this SWMP Template include:
Comprehensive Plan, Development Code, Storm Drainage Master Plan, Parks Master Plan,
Wetland Inventory, and any watershed water quality monitoring reports available.
The very first step is to replace the [jurisdiction] on the cover page with the name of your
city. Once changed, right click and select “update field” on all of the [jurisdiction] references
throughout this document to reflect the text on the cover page. Contact your DEQ basin
coordinator for template assistance.
All SWMP template text that does not need to be modified is found in this font. However, it
is always important to verify that the information is correct and accurate. Within this
standard text there are still individual words and sentences that may need to be changed.
These are indicated by [brackets] and this font.
Template directions are written in this font. These directions are placed directly underneath the
heading that the directions refer to.
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STORMWATER MANAGEMENT PLAN
For the
[JURISDICTION]4
4
Insert name of city here to be automatically referenced throughout the document.
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Stormwater Management Plan 10/14/2011
TABLE OF CONTENTS
Remember to update the fields in this table of contents when edits to the template have been
completed.
List of Tables....................................................................................................................................................... 2
List of Figures ..................................................................................................................................................... 2
SECTION A ................................................................................................................................................ 3
Chapter A.1 Introduction .................................................................................................................... 3
Objectives ............................................................................................................................................................ 3
Background ......................................................................................................................................................... 3
Authorization ..................................................................................................................................................... 4
Planning Horizon .............................................................................................................................................. 4
Document organization .................................................................................................................................. 5
Chapter A.2 Related Stormwater Regulations ............................................................................ 6
Total Maximum Daily Load ........................................................................................................................... 6
Endangered Species Act ................................................................................................................................. 7
National Flood Insurance Program of 1968 - Floodplain Management ...................................... 8
CWA Section 404 - Wetland Management .............................................................................................. 8
Statewide Planning Goals 5 and 6 .............................................................................................................. 9
Comprehensive Plan ..................................................................................................................................... 10
Chapter A.3 Study Area Characteristics ...................................................................................... 12
General Description ...................................................................................................................................... 12
Existing Effects of Urbanization ............................................................................................................... 14
Chapter A.4 Technical Data Background .................................................................................... 18
[jurisdiction] Drainage Basins .................................................................................................................. 18
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SECTION B ................................................................................................................................................ 1
Chapter B.1 Implementation Work Plan ....................................................................................... 1
Implementation Work Plan Organization ............................................................................................... 3
Minimium Measure #1 Public Education and Outreach (PE) ......................................................... 6
Minimum Measure #2 Public Involvement and Participation (PIP) ......................................... 10
Minimum Measure #3 Illicit Discharges Controls (IDDE) ............................................................. 14
Minimum Measure #4 Construction Site Runoff Control (CS) ..................................................... 18
Minimum Measure #5 Post-Construction Stormwater Management (PCSM) ....................... 22
Minimum Measure #6 Pollution Prevention and Good Housekeeping (PP) .......................... 28
Measure #7 Program Management (PM) ............................................................................................. 33
Annual TMDL Implementation Plan Reports .............................................................................. 1
Stormwater Design and Maintenance Manual ............................................................................ 1
LIST OF TABLES
Table 1 [[jurisdiction] Land Use Designations 2011 ........................................................................... 12
LIST OF FIGURES
Figure 1 [name] Watershed Sub-Basin ...................................................................................................... 12
Figure 2 [jurisdiction] Soil Distribution within UGB [year] ............................................................. 13
Figure 3 [jurisdiction] [year] Drainage Basin Boundaries ................................................................ 18
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SECTION A
CHAPTER A.1 INTRODUCTION
The Stormwater Management Plan (SWMP) outlines the goals, strategies and programs
formulated to improve water quality, address existing and future conflicts between
flooding and development, and preserve and enhance valuable natural resources. The
recommendations will directly affect the City's capital improvement and operating
programs. It describes the City’s responsibilities and authority regarding stormwater
management implementation, and provides detailed descriptions of stormwater
management BMPs.
OBJECTIVES
Finish the Objectives section with historically observed stormwater infrastructure issues that
will be addressed by this SWMP, or are a motivation for its creation. If available, this
information may be provided by a storm drainage master plan.
The objective of the Stormwater Management Plan (SWMP) is to guide stormwater
management activities. The objectives are to:
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Protect private and public property from stormwater and groundwater related damage.
Develop a stormwater management plan that will not adversely affect wetlands, creeks,
streams and rivers, while meeting the needs of the City.
Develop a plan that uses natural features to retain and filter stormwater on site,
supported by traditional conveyance systems when necessary.
Develop a stormwater management plan that identifies specific required improvement
and associated costs.
Limit negative storm water related impacts to the community
Implement a stormwater management program that satisfies current and future
regulatory requirements.
Protect or enhance the quality of life in the area, including aesthetics.
BACKGROUND
Protecting water quality in local lakes, streams, rivers, and wetlands is an essential part of
any stormwater management plan. Unchecked and untreated stormwater runoff results in
accelerated and extended stream flows, destruction of aquatic habitat, modified natural
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hydrologic patterns, and elevated pollutant concentrations, all of which negatively impact
the local drinking water sources, water recreation, and fishing industries of Oregon’s cities.
The City will incorporate green infrastructure (GI) and other water quality protection
techniques as part of its stormwater infrastructure to manage rain water as a resource. GI
helps urban communities manage stormwater, while also providing additional benefits
such as increased recreational space and improved pedestrian safety, through which
communities can become both more attractive and livable.5
AUTHORIZATION
Describe how and on what date the authorized department(s) received their authorization for
implementing the SWMP (e.g. City Council resolution).
The [authorized department]’s Program Manager is responsible for overall program
management, compliance reporting, policy development, and coordination within the
[jurisdiction]. [Authorized department]’s staff serve as leads for the BMPs contained in
the SWMP. Because the permit is citywide, City staff outside the [authorized department]
are also involved with stormwater program development, implementation, and reporting.
If your city coordinates your stormwater management program with any other jurisdictions list
them here. These may be local, regional, or state jurisdictions.
PLANNING HORIZON
As a refinement to the [Public Facilities] element of the Comprehensive Plan, the SWMP is
expected to have a similar planning horizon, and will be adjusted to reflect the City’s most
current planning documents. It is expected that the SWMP: Implementation Work Plan
(Appendix A) will be reviewed and updated every 5 years in tandem with the TMDL
implementation plan update. The status of all tasks should be included in the TMDL annual
report to DEQ.
The [jurisdiction] [Storm Drainage] Master Plan [2007] identifies and addresses
stormwater related problems throughout the City. It also identifies opportunities for
optimizing existing resources through improved prioritization, mission integration, and a
renewed commitment to the use of environmentally responsible, cost-effective and
sustainable solutions. The mission of the program is to [reduce the impact of flooding
and water pollution on the community in order to protect lives, property, and the
environment.]
EPA), A Strategic Agenda to Protect Waters and Build More Livable Communities Through Green
Infrastructure April 2011,
5
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DOCUMENT ORGANIZATION
SECTION A
Chapter A.1 Introduction—describes the objectives, how the document is organized,
and how it fits into the City’s Comprehensive Plan.
Chapter A.2 Related Stormwater Regulations—describes the main federal and State
regulations that are the legal framework for local stormwater management activities.
Chapter A.3 Study Area Characteristics—describes the City’s physical and temporal
characteristics, and summarizes known water quality studies, water quality concerns
and flood prone areas within the city.
Chapter A.4 [Optional] Technical Data Background—forms the basis for your
stormwater facility designs and sizing. Projects addressing storm drainage and water
quality issues are listed and prioritized according to urgency and feasibility.
SECTION B
Chapter B.1 Implementation Work Plan—identifies goals, strategies, programs, tasks,
and benchmarks the City will use to meet the six minimum stormwater control
measures and the program management measure.
Chapter B.2 Stormwater Design and Maintenance Manual (SWDMM)—is the technical
document that outlines the requirements which apply to all development and
redevelopment projects within the City on private and public property.
Chapter B.3 TMDL Annual Reports—tracks implementation to provide to DEQ
APPENDICES
Appendix A Total Maximum Daily Loads (TMDL) Regulations—provides the
requirements of the TMDL Water Quality Management Plan (WQMP), and defines who
are Designated Management Agency (DMAs).
http://www.deq.state.or.us/wq/tmdls/tmdls.htm
For watersheds outside the Willamette Basin, you may replace this information with the TMDL
regulations for your basin.
Appendix B Stormwater Phase II Regulations—addresses how a city is designated as a
NPDES Phase II MS4 community, if a city can be phased-in, and if waivers are available.
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CHAPTER A.2 RELATED STORMWATER REGULATIONS
The majority of the language in this chapter is standardized, requiring minimal edits. However,
continue to verify that each section is relevant to your city. For example, if your city does not
have any wetlands, then you should remove the Wetlands Management section. Additionally,
the “Complying with the ESA” subsection requires action by the city in order to be relevant to
the SWMP. Your city may not need this section. A great resource for models codes that relate
your comprehensive plan to water quality goals can be found on the DLCD’s website:
http://www.oregon.gov/LCD/waterqualitygb.shtml.
This SWMP provides the guiding framework and policy recommendations for managing
local watersheds and their associated waterways. These recommendations are tied closely
to the following federal and Oregon state regulations:
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Total Maximum Daily Load
Endangered Species Act
Floodplain Management
Wetland Management
Comprehensive Plan (primarily State Planning Goals 5 and 6, but other Goals may be
valuable)
TOTAL MAXIMUM DAILY LOAD
Through the Willamette Basin TMDL Water Quality Management Plan (WQMP) DEQ has
required municipalities to prepare a TMDL implementation plan that defines how water
bodies will meet load and wasteload allocations specified in a TMDL. See
http://www.deq.state.or.us/wq/assessment/rpt2010/results303d10.asp for the listed
water bodies in the [Watershed Name]. The plan must present management strategies for
controlling sources of TMDL pollutants. In addition, the plan must be prepared in
accordance with federal and State laws.
The Clean Water Act (CWA) requires that each state implement activities to protect the
quality of its rivers, streams, and other water bodies. DEQ has primacy for implementing
this law, including the responsibility for developing standards to protect the beneficial uses
that have been determined for each water body. DEQ developed the 303(d) list to identify
water bodies that do not meet current standards. Once a water body has been listed and/or
TMDLs have been established, local governments are responsible for working with DEQ to
develop and implement recovery plans to protect the beneficial uses.
DEQ develops TMDL levels for each stream on the 303(d) list within 10 years of its listing.
TMDLs define the quantity of the pollutant that can enter a water body without violating
water quality standards. TMDLs apply to both point (end of pipe) and non-point
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(stormwater runoff) sources, and include a factor of safety to account for uncertainty and
allow for some future discharges into the water body.
List the 303(d) listed streams and rivers in your jurisdiction and their TMDLs. This information
-can be found at: http://www.deq.state.or.us/wq/assessment/rpt2010/results303d10.asp
RELATIONSHIP OF THE SWMP TO ANNUAL COMPLIANCE REPORTS
The SWMP is a comprehensive plan that uses, at a minimum, the six TMDL measures and
the program management measure to express the overall intent and breadth of the City’s
stormwater management program. It includes implementation tasks and, where possible,
schedules. In many cases, however, it is difficult to determine implementation details years
in advance because so many variables are involved. For that reason, a greater level of detail
is included in the annual and five year review TMDL implementation plan compliance
reports the City submits to DEQ by [this date] each year. The annual compliance reports
provide information about BMP activities that have been implemented over the course of
12 months. The five year review is more comprehensive and also needs to address the
effectiveness of the plan over the course of the previous four years. They include reporting
on the measurable goals identified under each BMP, as well as other activities that are
essential elements of the stormwater management program. The annual compliance
reports also identify activities planned for implementation in the coming fiscal year.
ENDANGERED SPECIES ACT
The Endangered Species Act (ESA) was enacted to prevent extinction of certain species of
fish, wildlife, and plants that have seen significant declines in their populations within a
defined geographic range or Evolutionarily Significant Unit (ESU). The rules prohibit a
"take," which the ESA defines as "harass, harm, pursue, hunt, shoot, wound, trap, capture,
or collect, or attempt to engage in any such conduct." The rules go into effect immediately
upon listing by the government. The term "harass" is further defined as any intentional or
negligent act that creates the likelihood of injuring wildlife by disrupting normal behavior
such as breeding, feeding, or sheltering, whereas "harm" is an act that either kills or injures
a listed species. By definition, "take" and "harm" can include any habitat modification or
degradation that significantly impairs the essential behavioral patterns of fish or wildlife.
LISTED WILDLIFE AND PLANTS
Listings define the status of the species as endangered, threatened, or not warranted.
Endangered is defined as, "in danger of extinction throughout all or a significant portion of
its range," while threatened means, "likely to become endangered within the foreseeable
future throughout all or a significant portion of its range." (NOAA, NOAA Fisheries Office of
Protected Resources, 1973)
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List the streams and rivers in your jurisdiction that have critical habitat. This information can be
found at: http://www.nmfs.noaa.gov/pr/species/criticalhabitat.htm.
NATIONAL FLOOD INSURANCE PROGRAM OF 1968 - FLOODPLAIN MANAGEMENT
Congress initiated the National Flood Insurance Program (NFIP) in 1968 to control costs to
all levels of government due to flood disaster relief. The Federal Insurance Administration,
part of the Federal Emergency Management Agency (FEMA), administers the program.
Physical data developed as part of the SWMP's hydrologic/hydraulic modeling could be
used to update or develop FEMA maps. However, most master planning efforts do not
provide the level of technical analysis required to satisfy the FEMA requirements. As part of
a FEMA update, maps could be developed that account for planned improvements to the
stormwater drainage system. This could be advantageous to the community if the actual
100-year floodplain is less extensive than currently shown on FEMA maps, resulting in a
reduction in the area that is impacted by FEMA requirements.
NFIP insurance coverage is available only in communities that implement regulations to
reduce the likelihood of future flood damage. Zoning laws, building codes, and development
regulations serve to manage the floodplain by setting restrictions and requirements for
new construction within and contributing to flood-prone areas. Congress modified NFIP in
1973. Funds related to federal programs that involve structures within the 100-year
floodplain can be granted only if the structure is covered under a flood insurance policy
and the community participates in NFIP.
To enter the regular NFIP program, a community must adopt a completed technical study
of flood hazards performed by FEMA. A floodplain study determines the elevations of
floods of varying intensity and the floodway boundaries. This information is presented on a
Flood Insurance Rate Map and Flood Boundary and Floodway Map. The community adopts
and enforces regulatory standards based on these maps.
CWA SECTION 404 - WETLAND MANAGEMENT
The primary state regulation that affects development activities in and near wetlands is the
Removal-Fill Permit Program, ORS 196.800 through 196.990, administered by DSL. The
1987 USACE manual is used to delineate wetlands. The Removal-Fill Permit Program
regulates:
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The removal of 50 cubic yards or more of material from one regulated location in
any calendar year.
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The filling of a waterway with 50 cubic yards or more of material at one location at
any time.
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Any public or private project that involves filling or removing fill from wetlands included in
the City’s wetland inventory requires a DSL permit if the quantities exceed 50 cubic yards.
The City's National Wetland Inventory can be found on the City’s website. In addition, a
Local Wetland Inventory Report provides detailed information on wetland locations. The
absence of wetlands, streams, and drainage channels on inventory maps does not
automatically relieve the owner or developer of acquiring permits. Wetlands can be
present on a site and not appear on an inventory map. The owner or developer must
determine if wetlands are present and determine whether a DSL permit is required. DSL
also regulates irrigation ditches and intermittent streams if they are considered a source of
food for wildlife or provide habitat for game fish. Further, DSL regulates intermittent
streams if they meet federal wetlands criteria.
Section 404 of the CWA requires approval prior to discharging dredged or fill material into
the "waters of the United States." The U.S. Army Corps of Engineers (USACE) is responsible
for administering Section 404 of the CWA. "Waters of the United States" includes
essentially all surface waters such as all navigable waters and their tributaries, all
interstate waters and their tributaries, all "wetlands adjacent" to these waters, and all
impoundments of these waters. Typical activities requiring Section 404 permits are:

Depositing of fill or dredged material in waters of the U.S. or adjacent wetlands.

Site development/fill for residential, commercial, or recreational developments.
As defined in Section 404, wetlands are: “Those areas that are inundated or saturated with
surface or groundwater at a frequency and duration sufficient to support, and that under
normal circumstances do support, a prevalence of vegetation typically adapted for life in
saturated soil conditions.” In addition to the USACE, the Oregon Division of State Lands
(DSL) regulates activities on wetlands.
STATEWIDE PLANNING GOALS 5 AND 6
The SWMP fulfills portions of the planning and implementation guidelines outlined by
Goals 5 and 6 of the Statewide Planning Goals. Goal 5: Natural Resources, Scenic and
Historic Areas, and Open Spaces, states that “local governments shall adopt programs that
will protect natural resources and conserve scenic, historic, and open space resources for
present and future generations.” While Goal 6: Air, Water and Land Resources Quality,
states that “all waste and process discharges from future development, when combined
with such discharges from existing developments shall not threaten to violate, or violate
applicable state or federal environmental quality statutes, rules and standards. With
respect to the air, water and land resources of the applicable air sheds and river basins
described or included in state environmental quality statutes, rules, standards and
implementation plans, such discharges shall not (1) exceed the carrying capacity of such
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resources, considering long range needs; (2) degrade such resources; or (3) threaten the
availability of such resources.”
COMPREHENSIVE PLAN
The City’s Comprehensive Plan contains the requirements of the Statewide Planning Goals
and Guidelines and the community’s vision on land use. It defines how land will be used
and managed within the City. The Plan is organized around the topic areas defined by the
Statewide Planning Goals. Each topic area is in an article (chapter) that includes a
background discussion followed by findings and policies in support of the goals. The
findings provide statements of fact or conclusions, while the policies provide guidance for
actions required for meeting the community’s vision.
In addition to Goals 5 &6, water quality may be addressed in a variety of ways through a
variety of goals:
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Goal 4 Forest Management: Forests clean the air from which many stormwater
pollutants settle. Roots prevent soil erosion and provide habitat for numerous soil
animals that preserve the long-term permeability of our watersheds. Mature forests,
even in clay soils, have been found to reduce runoff to virtually nothing on an
average annual basis.
Goal 7, Areas Subject to Natural Disasters & Hazards: This Goal gives cities
jurisdiction over the carrying capacity of their air, water, and land resources and
may be used to limit or prohibit development in and contributing to areas subject to
natural disasters and hazards, such as areas that flood.
Goal 8, Recreational Needs: This goal requires jurisdictions to considering carrying
capacity of their natural resources and balance that with the recreational needs of
its citizens.
Goal 10, Housing: Site planning decisions strongly influence the extent of
impervious cover. Conservation development, skinny streets, and other “smart
development” techniques will protect water quality.
Goal 11, Public Facilities and Services: Drainageways – how, where, and when
stormwater is conveyed – area specifically addressed in this Goal.
Goal 12, Transportation: The extent to which a watershed is impervious is directly
related to transportation planning.
Goal 15, Willamette River Greenway: This Goal requires a city’s Department of
Transportation to protect, conserve, and maintain natural resources along the
Willamette. Possible inventories that might be included in the decision making
process are fish and wildlife habitat, hydrologic conditions, and ecologically
sensitive areas.
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Stormwater Management Plan 10/14/2011
Goal 16, Estuarine Resources: This goal recognizes the environmental, economic,
and social value of estuaries and aims to balance these goals. Areas upland that
drain to an estuary may be included in implementing regulations.
Goal 17, Coastal Shorelands: This goal recognizes the environmental, economic, and
social value of coastal shorelands and specifically includes water quality as one
metric in regulating development and other activities along these areas.
Goal 18, Beaches & Dunes: This Goal addresses groundwater quality specifically and
aims to do this by regulating aquifer draws that may destabilize vegetation, impact
water quality, and invite salt water intrusion into water supplies.
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CHAPTER A.3 STUDY AREA CHARACTERISTICS
This chapter provides a general description of the physical characteristics of the local watershed
and the city itself. Additionally, it describes the existing effects of urbanization using TMDL and
ESA data and then wraps up with descriptions of the individual drainage basins located within
the City’s UGB.
GENERAL DESCRIPTION
This section describes your City’s watershed subbasin – where it is in the larger basin context
(i.e. Willamette, Rogue, etc), what rivers flow through it, the size of the subbasin, and list any
drainage basins within the subbasin that are important for local drainage. The Oregon
Watershed Enhancement Board Watershed Assessments Website has watershed assessments for
watersheds throughout the State.6 Another resource may include the Willamette Basin
Restoration Priorities Watershed Summaries, December 21, 2005, by Willamette Watershed
Councils, Watershed Initiatives, and Biosystems Consulting.7
If land use, hydrologic soils, habitat, wildlife, and general characteristics information is not
readily available this information is not required.
F IGURE 1 [ NAME ] W ATERSHED S UB -B ASIN 8
Insert map of watershed here.
LAND USE
Continue to describe the primary land uses in your jurisdiction and any other land use
information that would influence your stormwater management program.
Land use information is an integral component in determining the amount of stormwater
generated within any City. The type of land use in an area will affect the volume and
character of the stormwater runoff generated from that area. For instance, higher average
daily traffic loads will contribute more pollutants to storwmater runoff than low traffic
roads and parking lots. Adequately estimating the generation of stormwater from various
land use types is important in sizing and maintaining collection system facilities.
T ABLE 1 [ JURISDICTION ] L AND U SE D ESIGNATIONS 2011
Using your most current land use analysis determine acreage of the various land uses within
your UGB and their percentages. Example land use categories are shown in the table below:
OWEB Watershed Assessments, http://www.oregon.gov/OWEB/MONITOR/watershedassessments_
linked.shtml
7 http://www.oregon.gov/OWEB/docs/pubs/Rest_Priorities/Willamette_Watershed_Council_
Summaries_Dec05.pdf?ga=t
8 Willamette Basin TMDL: Coast Fork Willamette Subbasin, September 2006
6
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SECTION B
Land Use
Stormwater Management Plan 10/14/2011
Acres
Percent
Residential
Parks and Open Space
Commercial
Other, Public and Semi-Public
Industrial
Mixed-Use (Commercial and
Residential)
Totals
100%
TOPOGRAPHY AND PHYSICAL CHARACTERISTICS
Describe the local topography including the miles of river channels and floodplain, elevation
highs and lows, soil types, and average slope. This information may already be available in your
stormwater master plan. The USDA Web Soil Survey website is a useful tool for determining the
general percentages of soil types within your UGB. Include a soils map here under the “Figure
2” heading below. Significant errors in soil infiltration rates can easily be made if published soil
maps and most available models utilize typically disturbed urban soils, as these tools ignore
compaction. Knowledge of compaction (which can be estimated based on expected activity on
grassed areas) can be used to much more accurately predict stormwater runoff quantity. 9 In the
long-run, the best way to understand soils in your city may be to require infiltration testing and
track those results logging test pit location (latitude and longitude), soil classification, testing
depth, and infiltration rate.
F IGURE 2 [ JURISDICTION ] S OIL D ISTRIBUTION WITHIN UGB [ YEAR ]
Insert soil distribution map here if available.
STORMWATER CONVEYANCE SYSTEM
This section describes your city’s existing stormwater conveyance system including types of
facilities, direction of flow, and outfalls. Conveyance runs that surcharge when others do not
should be noted. If this information is not available, it can be added later once the Illicit
Discharge Detection System minimum control measure is implemented or a storm drainage
master plan has been completed.
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SECTION B
Stormwater Management Plan 10/14/2011
EXISTING EFFECTS OF URBANIZATION
This section should include any TMDL report information about pollutants of concern in your
watershed and in rivers or streams located inside your city’s UGB. It also discusses drainage
and flood issues, non-point source issues, erosion and sediment concerns, and fish distribution
and habitat use in streams in and below your jurisdictional boundaries.
This section should provide information on local sensitive species (e.g. Chinook salmon, Trout,
and Western Pond Turtles) and identify locations and negative impacts. If your city has any
existing programs focused on protecting these species or any agreements with state or federal
agencies include descriptions of them here.
In urban areas, the impervious surfaces created by buildings and pavement cause
rainwater and snowmelt to flow quickly over the landscape, rather than soaking naturally
into the soil or being absorbed by plants. This can change stream flows, increase flooding,
endanger private and public infrastructure, erode stream banks and channels, and destroy
fish habitat. Runoff also carries pollutants such as oil, heavy metals, bacteria, sediment,
pesticides, and fertilizers into streams or groundwater. The combined impact of hydrologic
changes and water pollution can be disastrous for streams and rivers in urban areas.
DRAINAGE AND FLOOD ISSUES
This information can be gathered from any drainage master plans or city public works staff. This
section describes any historic drainage, flooding, or erosion problems and why they exist. If
possible, be specific about the sources of the drainage issues. If this information is not readily
available it can be included at a later date. Strategies to address flooding should consider not
only the flooded area but also any area – landscape or hardscape – that drains to an area that
floods. Consider incentivizing or requiring LID foundations (such as piers and post footings)
and any strategies that will create additional storage both above and below-ground for runoff and
floodwaters.
Flooding occurs when a large volume of water flows too fast through a watershed, but can
also be exacerbated by various development practices. Historically, in watersheds in
Oregon, subsurface flow through voids in the soil was the primary way that rainfall was
conveyed and cleansed before emerging as a seep in the headwaters or from the banks of a
waterway lower in the watershed. Development practices that compact soil (i.e. roads,
sidewalks) or exclude soil volume (i.e. basements, underground tanks) reduce the volume
of voids available to convey rainfall downhill.. Water still flows from the top of the
watershed to the bottom during, and well after, a rainfall event, but in fewer voids. This
causes soils to become prematurely over-saturated, raising groundwater tables above their
historic levels and generates runoff sooner than an undeveloped watershed.
TMDL WATER QUALITY ANALYSIS RESULTS
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SECTION B
Stormwater Management Plan 10/14/2011
Review the Basin TMDL for your subbasin. This report will provide you with the relevant
pollutants of concern, their load allocations, and causes for the Willamette Basin. This
information may already have been addressed in your TMDL implementation plan. This
information can be copied and pasted here. Information below relating to TMDLs in your
subbasin may be kept, while any irrelevant information should be deleted.
If your basin is not the Willamette Watershed, you may also copy information from the TMDL
documents found on the Oregon DEQ’s website. Use the Oregon basin map (found here:
http://www.deq.state.or.us/wq/tmdls/basinmap.htm) to navigate to documents available for your
basin.
Bacteria10: People can be affected by bacteria present in water when enjoying water
activities such as swimming, wading, wind surfing, water skiing, boating or fishing.
Ingestion or contact with water contaminated with bacteria can cause skin and respiratory
ailments, gastroenteritis and other illnesses in humans.
Bacteria comes from a variety of sources including failing septic systems, discharges of
untreated or poorly treated sewage resulting from sewer malfunctions or overflows, and
stormwater runoff that carries feces from pets, domesticated animals or wildlife from
urban, residential, and agricultural lands.
Mercur11y: The accumulation of mercury in fish is a wellrecognized environmental problem
throughout the United States. Mercury is a potent toxin that can cause damage to the brain
and nervous system. Small children and the developing fetus are most sensitive to
mercury’s toxic effects. The primary way that humans are exposed to mercury is through
the consumption of fish or seafood containing elevated levels of mercury.
Mercury is a naturally occurring element found in soils throughout the Willamette Basin.
Mercury is also found in trees and fossil fuels such as coal, natural gas, diesel and heating
oil. The mercury present in these fuels is released into the atmosphere upon combustion.
This mercury can be transported great distances and can later be deposited on the land
where storm water runoff can carry it into rivers and lakes. Mercury was mined
commercially in Oregon and used in many products including fluorescent lights,
thermometers, automobile switches and dental fillings.
Temperature12: At times, the Willamette River and its tributaries are too warm to support
healthy salmon and trout. Some of these cold water fish, including lower Columbia coho,
Copied from DEQ Fact Sheet: http://www.deq.state.or.us/wq/pubs/factsheets/willamette/bacteria.pdf
Copied directly from the DEQ Fact Sheet:
http://www.deq.state.or.us/wq/pubs/factsheets/willamette/mercury.pdf
12 Copied directly from DEQ Fact Sheet:
http://www.deq.state.or.us/wq/pubs/factsheets/willamette/07wq000_temperature.pdf
10
11
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SECTION B
Stormwater Management Plan 10/14/2011
spring Chinook, winter steelhead, and bull trout are threatened with extinction and
elevated stream temperatures have contributed to their decline. Warm water interferes
with adult salmon and trout migration and spawning. Warm water also decreases chances
of juvenile survival; it affects egg and embryo development, alters juvenile fish growth
rates, and decreases their ability to compete with temperature-tolerant fish species for
habitat and food. Salmon and trout are also more susceptible to disease when water
temperatures are warmest.
Stream temperatures are influenced by climate, elevation, geology, hydrology, stream side
vegetation and many other factors. Natural warming is greatest during late spring, summer
and early autumn when solar radiation levels are high and stream flows are usually at their
lowest levels of the year.
A legacy of past land use practices and current watershed management activities cause
many Willamette Basin streams to warm beyond natural temperatures. Throughout the
basin a principal cause of stream heating has been the removal of trees and other shadeproducing vegetation from stream banks. This loss of riparian vegetation allows more
solar energy to reach the water’s surface. This warming is most noticeable in small
tributaries which typically can be well shaded.
Water diversions also contribute to stream heating by reducing stream flow during critical
periods. This increases stream sensitivity to natural warming processes by diminishing
volume and slowing the movement of water downstream. The water that remains in the
stream channel has greater exposure to solar radiation and other sources of heat.
Reservoirs that store water for uses such as hydropower, recreation and flood control can
also affect stream temperature by releasing water that is colder than natural in the spring
and summer, but warmer than natural in the fall. Wastewater from industrial and
municipal treatment facilities may also be a source of heat when discharged to streams.
This is most apparent in smaller tributaries and the upper Willamette River which have
less flow than the lower river.
Activities that regulate or restrict river connectivity with its floodplain can affect water
temperatures and stream habitats. Channel dredging, bank armoring and other activities in
the stream channel and floodplain may degrade areas of cool tributary and groundwater
inflow. These areas of cool inflow provide small but important refuges that sustain salmon
and trout through periods of seasonally warm water temperatures.
Pollutants of Concern
List all of the pollutants of concern identified by the most recent TMDL Water Quality Analysis.
Include the sources of the pollutants both general and locally specific and the impacts of the
Page 16
SECTION B
Stormwater Management Plan 10/14/2011
pollutants on the local watershed. An appropriate narrative for pollutants of concern can be
found by visiting the DEQ’s Willamette Basin Total Maximum Daily Loads (TMDLs) – Fact
Sheets and Overview Maps: http://www.deq.state.or.us/wq/willamette/factsheets.htm. Click on
your subbasin and copy the information under “303(d) List and Pollutants of Concern” and
paste that here.
EROSION AND SEDIMENTATION
Erosion and sedimentation are naturally occurring processes that are unnaturally
accelerated by land development. The risks of erosion are highest in areas with fine soils,
on steep slopes, and areas undergoing active construction activities. Soils denuded of
vegetation and the resultant increased imperviousness are two potential effects of
development that contribute to greater peak flows, longer duration of high flows, and other
factors that increase erosion. This eroded material is often deposited downstream where it
decreases culvert and channel capacity and smothers natural habitat.
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SECTION B
Stormwater Management Plan 10/14/2011
CHAPTER A.4 TECHNICAL DATA BACKGROUND
This chapter provides the technical data that forms the basis for your stormwater facility designs
and sizing. If you plan to use bioretention facilities such as rain gardens or stormwater planters,
resources for sizing facilities at the OSU Extension Stormwater Solutions website at:
http://extension.oregonstate.edu/stormwater/lid-infiltration-facility-calculator-aka-rain-gardencalculator. If a storm drainage master plan is available, reference it here. Water quality
protection and water quantity management should be a top priority when analyzing the existing
stormwater infrastructure.
The following are some questions to consider:

Are there locations available for regional stormwater treatment facilities?

Are there land acquisition opportunities for stormwater facilities and open space?
If you don’t have a master plan in place requiring controls is still important. For example,
providing post-development hydrology that mimics pre-development hydrology will limit
drainage/flooding issues identified in a stormwater master plan developed in the future.
Delaying these requirements until a master plan is available will only ensure that the flooding
issues are bigger. Postponing actions on controlling pollutants for too long will result in
developments that have no post-construction stormwater controls that will need retrofits to treat
TMDL pollutants. Retrofits are a substantial financial burden on municipalities and reducing
their need should be a priority.
[JURISDICTION] DRAINAGE BASINS
Describe any existing drainage master plan findings in this section. Specifically provide
information on the drainage basins the plan identified and how those basins were determined.
F IGURE 3 [ JURISDICTION ] [ YEAR ] D RAINAGE B ASIN B OUNDARIES
Insert map here if available.
PRIORITIZATION OF PROJECTS BY DRAINAGE BASIN
List your prioritized projects here for the immediate, short, and long-term future. You may want
to break them up based on type of project (capacity, flood, water quality, regulatory, and/or
programmatic) in addition to timeframe.
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Stormwater Management Plan
2/9/2016
Note: Section B is the action plan or the work plan. Your jurisdiction may want to keep this as
a separate section or make it an appendix, so it can be modified by staff without requiring council
approval.
SECTION B
CHAPTER B.1 IMPLEMENTATION WORK PLAN
The Implementation Work Plan is a living document. This document can be updated as
needed by City staff to ensure that programs, tasks, and benchmarks remain up-to-date and
reflect the most current status of the stormwater management system. The [responsible
department] reports on the progress made by each program to DEQ as part of the annual
TMDL report.
Goals
The goals identified in this document were developed using the Stormwater Phase II Final
Rule guidance section, published in December 1999, and the City of Portland Stormwater
Management Plan, published in April 2011. They describe the intended results the City
aims to achieve by the end of the SWMP’s planning horizon.
Goal Overviews
The goal overviews provide additional information about the goals and why they should be
addressed by the SWMP.
Strategies
The strategies are the methods by which the City will reach the SWMP goals. Each goal will
have one or more corresponding strategies. The strategies are more specific than the goal,
but broader than the programs and tasks.
Programs
The programs listed in the Work Plan provide the City with the means of putting their
strategies into action.
Tasks
To ensure each program is successfully implemented, a list of tasks has been developed to
identify the what, when, and where. These tasks are reviewed and updated annually by the
City’s [responsible department(s)] as part of the TMDL annual report process. During the
review each completed task is removed and new tasks are added or altered to fit the
current needs of the community.
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Stormwater Management Plan
2/9/2016
Benchmarks
Benchmarks are identified for each program. They define target levels of implementation
for the program and are quantifiable where possible. The City’s [responsible
department(s)] reviews and updates the benchmarks annually as part of the TMDL annual
report process. During the review each completed benchmark is removed and new
benchmarks are added to fit the current needs of the community.
Determining Your Benchmarks:
There are a number of different ways you can write your benchmarks. You can consider
developing benchmarks based on one or more of the following general categories:
1. Tracking implementation over time. Where a task is continually implemented over
the permit term, a benchmark can be developed to track how often, or where, this task is
implemented.
2. Measuring progress in implementing the task. Some tasks are developed over time,
and a benchmark can be used to track this progress until the task implementation is
completed.
3. Tracking total numbers of tasks implemented. Benchmarks also can be used to track
task implementation numerically, e.g., the number of wet detention basins in place or the
number of people changing their behavior due to the receipt of educational materials.
4. Tracking program/Task effectiveness. Benchmarks can be developed to evaluate task
effectiveness, for example, by evaluating a public education campaign's effectiveness at
reaching and informing the target audience to determine whether it reduces pollutants to
the MEP or the number of illicit discharge training sessions for City staff are held each
year. A benchmark can also be a stormwater facility design objective or a performance
standard.
5. Tracking environmental improvement. The ultimate goal of the stormwater program
is environmental improvement, which can be a benchmark. Achievement of
environmental improvement can be assessed and documented by ascertaining whether
state water quality standards are being met for the receiving waterbody or by tracking
trends or improvements in water quality (chemical, physical, and biological) and other
indicators, such as the hydrologic or habitat condition of the waterbody or watershed.
EPA strongly recommends that benchmarks include, where appropriate, the following three
components:
1. The activity, or task, to be completed;
2. A schedule or date of completion; and
3. A quantifiable target to measure progress toward achieving the activity or task.
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Stormwater Management Plan
2/9/2016
Benchmarks that include these three components and are easy to quantify will allow both you
and your TMDL authority to assess progress at reducing pollutants to the MEP.
TABLE OF CONTENTS
Minimium Measure #1 Public Education and Outreach (PE) ......................................................... 6
Minimum Measure #2 Public Involvement and Participation (PIP) ......................................... 10
Minimum Measure #3 Illicit Discharges Controls (IDDE) ..Error! Bookmark not defined.
Minimum Measure #4 Construction Site Runoff Control (CS) ..................................................... 18
Minimum Measure #5 Post-Construction Stormwater Management (PCSM)....................... 22
Minimum Measure #6 Pollution Prevention and Good Housekeeping (PP) .......................... 28
Measure #7 Program Management (PM) ............................................................................................. 33
IMPLEMENTATION WORK PLAN ORGANIZATION
This Work Plan is organized by the seven SWMP measures: Public education and outreach,
Public involvement, Illicit discharges control, Construction erosion and sediment control, Postconstruction runoff controls, Pollution prevention and good housekeeping, and Program
management. Under each measure, example programs are listed that correspond to the Strategies
from Chapter 5. Each program is followed by a description of that program and the proposed
tasks a city might undertake. Once all of the programs and tasks have been described, each topic
wraps up with the benchmarks used to indicate progress, some additional program options, and
some additional resources. The additional program options and additional resources should not
be included in your final Work Plan; they are merely for your own knowledge.
The EPA’s National Menu of Best Management Practices (Click here to browse by measure
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=browse) can
help you identify practices appropriate for your community the meet the six minimum
measures. Fact sheets, outreach materials, research, and other tools can all be found at
their website (http://cfpub.epa.gov/npdes/stormwater/menuofbmps/)
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Stormwater Management Plan
2/9/2016
Summarize the BMPs that you have chosen to implement here. This is an example from the City
of Cottage Grove.
T ABLE B. 1
BMP #
PE 1
PE 2
PE 3
PE 4
PIP 1
PIP 2
PIP 3
PIP 4
PIP 5
PIP 6
BMP Title
Minimum Measure #1 – Public Education and Outreach
PE-1.1: Stormwater Education and Outreach
PE-1.X: Riparian Education Program
PE-1.X: PetMeasure
Waste Management
Minimum
#2 – PublicProgram
Involvement and Participation
PE-1.X: Storm
Drain Plaque
PIP-1.1:
Partnership
with Local Non-Profits and Volunteer Organizations
Here are other strategies you may want to consider to help you meet your
PIP-1.X:PIP
Invasive
Removal
Goal orSpecies
you may
proposeProgram
your own. Remember to provide descriptions
PIP-1.X:and
Pilot
Projects
tasks in a manner similar to the example above.
PIP-1.X: Stormwater Advisory Team
PIP-1.X: Notice
Train Students
in River Enhancement, Assessment, and Monitoring
PIP-2.1:
of Hearings
Minimum Measure #3 – Illicit Discharge Detection and Elimination
Here are strategies you may want to consider to help you meet your IDDE
IDDE 1
IDDE 2
IDDE-1.X:
Implement
to prohibit
Non-Stormwater
Discharges
Goal
or you mayOrdinance
propose others.
Remember
to provide descriptions
and
Here
are
strategies
you
may
want
to
consider
to
help
you
meet
your
IDDE
IDDE 3
tasks in a manner similar to examples provided in other goal sections.
Here
are
strategies
you
may
want
to
consider
to
help
you
meet
your
IDDE
IDDE 4
Goal or you may propose others. Remember to provide descriptions and
IDDE-1.X:
Waste
Pick
Up
and
Removal
Services
IDDE 5
IDDE-3.X:
Illicit
Public
Program
Goal
or
may propose
others.
Remember
to provide
and
tasks
in you
aDischarge
manner
similar
toOutreach
examples
provided
in otherdescriptions
goal sections.
Minimum
Measure
#4
–
Construction
Site
Runoff
Control
tasks in a manner similar to examples provided in other goal sections.
IDDE-2.X:
Develop
and Update
Storm
Master
Plan
Here
are strategies
you may
wantDrainage
to consider
to help
you meet your IDDE
CS 1
IDDE-3.X:
Illicit
Discharge
Training
Program
CS 2
CS-1.X:Goal
Continue
Enforce
Hillside
Development
or youtomay
propose
others.
Remember toRegulations
provide descriptions and
CS 2
CS-1.X:tasks
NPDES
1200-C
Permit
in a manner similar to examples provided in other goal sections.
CS 3
CS-1.X: Development Code Surface Waters and Drainage
CS-1.X:Here
Develop
Code Erosion
and want
Sediment
Control
are strategies
you may
to consider
to Section
help you meet your IDDE
CS 2
Here
are
strategies
you
may
want
to
consider
to
help you
meet yourand
IDDE
CS 3
Goal or you may propose others. Remember to provide
descriptions
CS 3
CS-3.X:Goal
Trainor
Reviewers
and
Inspectors
you
may propose
others.
Remember
to provide
and
tasks
inPlan
a manner
similar
to Field
examples
provided
in otherdescriptions
goal sections.
Minimum tasks
Measure
#5
–
Post-Construction
Stormwater
Management
in a manner similar to examples provided in other goal sections.
CS-2.X:Here
Erosion
Prevention
and
Sediment
Booklet
are strategies
you
may
want to Control
considerManual
to help you
meet your PCSM
PCSM 1
CS-3.X:
Site
Design
Review
PCSM 2
PCSM-1.X:
Use
andpropose
Zoningothers.
Tools Remember to provide descriptions and
GoalLand
or you
may
PCSM 3
PCSM-1.X:
Park
and
Open
Space
Acquisition
and
tasks in a manner similar toLand
examples
provided
in Protection
other goal sections.
PCSM 4
PCSM-1.X: Stormwater Facility Land Acquisition
PCSM 5
PCSM-2.X: Stormwater Design and Maintenance Manual
PCSM 6
PCSM-3.X: Post-Construction BMPs Staff Training
PCSM 7
PCSM-3.X: Post-Construction BMPs Maintenance
Minimum Measure #6 – Pollution Prevention in Municipal Operations
Here are strategies you may want to consider to help you meet your PP
PP 1
Here
areyou
strategies
you may
wantRemember
to considertotoprovide
help you
meet yourand
PP
PP 2
Goal or
may propose
others.
descriptions
Goal
may propose
Remember
to provide
and
tasks or
in you
a manner
similarothers.
to examples
provided
in otherdescriptions
goal sections.
tasks in a manner similar to examples provided in other goal sections.
PP-1.X: Municipal Stormwater Operations and Maintenance Plan
4
PP-2.X: Municipal Stormwater Page
Operations
and Maintenance Training
Stormwater Management Plan
PM 1
PM 2
PM 3
Measure #7 – Program Management
PM-1.X: City Management and Coordination
PM-1.X: Partnership with Federal, State, and County Agencies
PM-1.X: TMDL Annual Compliance Report
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MINIMIUM MEASURE #1 PUBLIC EDUCATION AND OUTREACH (PE)
Ensure that the following goal, goal overview, and goal strategies are accurate for your city or
develop a different set.
Illicit Discharge Detection and Elimination (IDDE) programs do not necessarily need to require
expensive testing equipment and extensive staff time. The City of Medford, MA reported13 on its
experience and discovered that:
1. The City did not need to buy expensive sampling equipment to complete IDDE investigations
in a professional and accurate manner. Crews utilized EPA-approved field test kits for
surfactants, ammonia, and chlorine to save laboratory costs. All bacteria samples were sent to a
lab for analysis. The field test kits include the CHEMetrics kits for surfactants (K-9400),
ammonia (K-1510), and total chlorine (K-2504).
2. A city-wide prioritization protocol and color-coding system created the basis for quickly
establishing areas in which to focus follow-up investigations. Grouping investigations into
geographical areas in the same day, even if they were different types of dry weather
investigations, helped save time and money.
3. Private property owners, both large-scale and small residential neighborhoods, were generally
willing to work with the City to mitigate illicit discharges once they were educated on the subject
and given advanced notice that the City would be visiting their properties.
PE GOAL
To influence public behavior in ways that will improve stormwater quality through
educational programs for adults, children (schools), and businesses.
PE GOAL OVERVIEW
Effective programs provide a context that makes the information meaningful, a process that
is not burdensome on individuals and information that is compatible with the learner’s
attitudes.
Here are examples of strategies (make this blue) or put for example in parentheses.
PE-1 GOAL STRATEGY
Strategy PE-1: [For example:] Develop and implement a program to reach adults, children
and businesses that results in improved stormwater discharges on water bodies. Efforts
Catching the Culprit on a Limited Budget: Running a Successful IDDE Program in an Old, Urban City.
Kathryn Edwards and Lindsay McCarthy, Malcolm Pirnie/ARCADIS, Wakefield, MA, and Penny Antonoglou,
City of Medford, Medford, MA. StormCon 2011 Conference Paper.
http://www.stormcon.com/papers/sc11_papers/ stormwater_program_management/McCarthy_P21.pdf
13
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Stormwater Management Plan
2/9/2016
should target specific audiences, be sustainable given city resources, and include
benchmarks to evaluate its effectiveness so that the program can adapt and improve.
PE-1.1: STORMWATER EDUCATION AND OUTREACH PROGRAM
Provide description here. Include supporting organizations (i.e. your watershed council),
target audiences, and topics that will be covered by the program.
Tasks
Here are examples of tasks that would support the various components of the program
your city is proposing:
1. Identify staff members responsible for developing an outreach program to
commercial businesses, a second for residences, and a third for schools.
2. Target a specific audience and provide detailed guidance for each effort.
Example: How to disconnect downspouts (in areas where appropriate) or how
to plant a rain garden (download the Oregon Rain Garden Guide
http://seagrant.oregonstate.edu/sgpubs/onlinepubs/h10001.pdf). Include
pictures, drawings, and names and planting density for specific species.
Resources are available from Oregon Environmental Council, City of
Eugene,Oregon DEQ, and OSU Stormwater Solution.(
http://extension.oregonstate.edu/stormwater/)
3. Coordinate with local watershed council or Camas Education Network to identify
schools interested in participating and key topics related to stormwater and
water quality protection.
Here are other strategies you may want to consider to help you meet your PE Goal.
Remember to provide descriptions and tasks in a manner similar to the example above.
PE-1.X: RIPARIAN EDUCATION PROGRAM
PE-1.X: PET WASTE MANAGEMENT PROGRAM
PE-1.X: STORM DRAIN PLAQUE PROGRAM
PE-1.X: CLASSROOM EDUCATION
PE-1.X: OUTREACH FOR COMMERCIAL BUSINESSES
PE-1.X: PROMOTIONAL GIVEAWAYS SUCH AS “MOST STORMWATER QUALITY FRIENDLY
YARD OF THE WEEK ” WITH A REWARD OF STORMWATER FEE WAIVED FOR A MONTH.
PE-1.X: ALTERNATIVES TO PESTICIDES AND HERBICIDES
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PE-1.X: CHLORINATED WATER POOL AND HOT TUB DISCHARGE
PE-1.X: LANDSCAPING AND LAWN CARE
PE-1.X: PEST CONTROL
PE-1.X: PROPER DISPOSAL OF HOUSEHOLD HAZARDOUS WASTES
PE-1.X: RESIDENTIAL CAR WASHING
PE-1.X: TRASH AND DEBRIS MANAGEMENT
PE-1.X: WATER CONSERVATION PRACTICES FOR HOMEOWNERS
PE-1.X: AUTOMOBILE MAINTENANCE
PE-1.X: POLLUTION PREVENTION FOR BUSINESSES
PE-1.X: PROMOTING LOW IMPACT DEVELOPMENT
PE-1.X: ALTERNATIVES TO TOXIC SUBSTANCES
PE BENCHMARKS
The Benchmarks are the most important part of your city’s Implementation Work Plan. DEQ
expects that these benchmarks will be completed during the timeline provided. Edit these
benchmarks to reflect the strategies chosen for your jurisdiction.
1. Completion of targeted plans for outreach.
2. Number of residences that have inquired into and elected to disconnect
downspouts or put in rain gardens, planters or other detention devices.
3. Pet waste signage and stations (bags, trashcans) throughout City parks. Monitor
the number of bags used.
4. At least 90 percent of City storm drains receive stormwater no-dumping
plaques.
5. Website information of upcoming stormwater education and outreach events
and existing programs is current to within 3 months of the review date.
6. At least XX percent of school children receive education on stormwater or water
quality topics.
7. At least XXX volumnteers are involved in stream cleanup or other volunteer
activities.
8. Conducted a survey to assess the effectiveness of public outreach and education
efforts.
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Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
EPA’s National Menu of Best Management Practices – Public Outreach
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=1
LID: Protecting Oregon’s waters as we grow
http://www.oeconline.org/our-work/rivers/rivers-files/lid-oregon-fact-sheet
Oregon Environmental Council Stormwater Solutions Resources
http://www.oeconline.org/our-work/rivers/stormwater/low-impact-development/lid-practices
City of Boise Public Works Education Program
http://www.cityofboise.org/Departments/Public_Works/EnvironmentalResourceCenter/index.as
px
Water Education Foundation
http://www.water-ed.org/store/default.asp
The Terrene Institute
http://www.terrene.org/
Getting In Step: A Guide to Effective Outreach in Your Watershed
http://www.epa.gov/owow/watershed/outreach/documents/getnstep.pdf
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MINIMUM MEASURE #2 PUBLIC INVOLVEMENT AND PARTICIPATION (PIP)
Ensure that the following goal, goal overview, and goal strategy are accurate for your city.
Below we have provided examples of each.
PIP GOAL
To encourage active citizen participation in the stormwater program development and
implementation of pollution reduction strategies. Public participation may include serving
as citizen representatives on a local stormwater management panel, attending public
hearings, assisting in program coordination with other pre-existing programs, or
participating in volunteer monitoring efforts.
PIP GOAL OVERVIEW
Public involvement is an integral part of the City’s stormwater program. The public must be
involved in stormwater issues and solutions if the program is to be effective. The pollutants
addressed by the public involvement goal depend on the target audience. Many of the
involvement activities do not target specific pollutants, but instead promote environmental
stewardship, pollution prevention, and water quality protection.
PIP-1 GOAL STRATEGY
[For example:] Implement public involvement and stewardship activities that will raise
awareness, foster community stewardship, and promote pollution prevention.
PIP-1.1: PARTNERSHIP WITH LOCAL NON-PROFITS AND VOLUNTEER ORGANIZATIONS
Provide description here. Include supporting organizations (i.e. your watershed council,
soil and conservation districts, etc), target audiences, and topics that will be covered by
the program.
Tasks
1. Assist homeowners with stream bank and riparian habitat care along waterways
through grant funded projects.
2. Utilize citizen scientists (science classes, retired experts) to monitor water
quality and help find solutions.
3. Work with local group(s) to label stormwater drains to warn people not to dump
anything into storm drains.
Here are other strategies you may want to consider to help you meet your PIP Goal or
you may propose your own. Remember to provide descriptions and tasks in a manner
similar to the example above.
PIP-1.X: TRAIN STUDENTS IN RIVER ENHANCEMENT, ASSESSMENT, AND MONITORING
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PIP-1.X: INVASIVE SPECIES REMOVAL PROGRAM
PIP-1.X: PILOT PROJECTS INSTALLATION PROGRAM
PIP-1.X: STORMWATER ADVISORY TEAM
PIP 1.X: DEVELOP A STORMWATER SPEAKERS BUREAU
PIP 1.X: CREATE STORMWATER PUBLIC SERVICE ANNOUNCEMENTS
PIP 1.X: DESIGN A STORMWATER DISPLAY
PIP 1.X: CREATE A STORMWATER ADVISORY TEAM
PIP 1.X: HOLD GOVERNED BODY MEETINGS
PIP 1.X: ADOPT-A-STREAM PROGRAMS
PIP 1.X: REFORESTATION PROGRAMS
PIP 1.X: STREAM CLEANUP AND MONITORING
PIP 1.X: VOLUNTEER MONITORING
PIP 1.X: WETLAND PLANTINGS
PIP 1.X: ATTITUDE SURVEYS
PIP 1.X: STAKEHOLDER MEETINGS
PIP 1.X: WATERSHED ORGANIZATIONS
PIP-2 GOAL STRATEGY
[For example:] Comply with state, tribal and local public notice requirements when
implementing a public involvement/participation program.
PIP-2.1: NOTICE OF HEARINGS
PIP BENCHMARKS
The Benchmarks are the most important part of your city’s Implementation Work Plan. DEQ
expects that these benchmarks will be completed during the timeline provided. Edit these
benchmarks to reflect the strategies chosen for your jurisdiction.
1. A record of dam impoundment locations and removal dates are kept - along with
notes about beaver relocation, if necessary.
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2. Local monitoring research underway with previous monitoring projects completed
and future projects prioritized with potential funding.
3. Complied with State law and Section 4.1.500 of the City’s Development Code
ensuring that sufficient public notice is provided.
Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
Adopt-A-Stream
http://www.streamkeeper.org/
EPA National Menu of BMPs, Public Involvement/Participation
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=2
Regional NPDES Phase II Stormwater Program Guide – Rogue Valley, Oregon
http://www.ashland.or.us/Files/NPDES%20Phase%202%20Stormwater%20Program.pdf
The Terrene Institute
http://www.terrene.org/
Water Education Foundation
http://www.water-ed.org/store/default.asp
Getting in Step: Engaging and Involving Stakeholders in Your Watershed
Provides the tools needed to effectively identify, engage, and involve stakeholders throughout a
watershed to restore and maintain healthy environmental conditions.
http://www.epa.gov/owow/watershed/outreach/documents/stakeholderguide.pdf
Community-Based Watershed Management
Describes the highly successful approaches to watershed management implemented by the 28
National Estuary Programs (NEPs).
http://www.epa.gov/neplessons/handbook.html
Stormwater case studies on public involvement – EPA
Includes case studies of how a Phase I or Phase II community has implemented the public
involvement requirements.
http://cfpub.epa.gov/npdes/stormwater/casestudiesRam.cfm?submissionType=1&minmeasure=2
EPA's Volunteer Monitoring Program
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Provides information on developing and implementing a volunteer monitoring program.
http://www.epa.gov/owow/monitoring/volunteer/
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MINIMUM MEASURE #3 ILLICIT DISCHARGES CONTROLS (IDDE)
Ensure that the following goal, goal overview, and goal strategies are accurate for your city.
Below we have provided examples of each.
IDDE GOAL
To identify, investigate, and, if appropriate, control/eliminate illicit discharges and nonstormwater discharges to the storm water system.
IDDE GOAL OVERVIEW
Illicit discharges are generally any discharge into a storm drain system this is not
composed entirely of stormwater. Illicit discharges may be the result of illegal activity (i.e.
dumping materials into a storm drain or connecting a wastewater pipe into the storm drain
system) or ignorance (i.e. a car washing fundraiser held in a public parking lot). These illicit
discharges are prohibited under various state and local laws. The exceptions include water
from fire fighting activities and discharges from facilities already approved by DEQ.
Illicit discharges are a problem, because unlike wastewater which flows to a wastewater
treatment plant, stormwater generally flows to waterways without any additional
treatment. Illicit discharges often include pathogens, nutrients, surfactants, and various
toxic pollutants. The best way to prevent illicit discharges is to prevent material from
entering the storm drain system. This is done through education, enforcing dumping
ordinances, and controlling spills.
The City’s activities under the illicit discharges controls goal address most pollutants
commonly found in urban runoff. The type and amount of pollutants addressed depend on
the pollutant source(s). For example, eliminating an illicit wash water discharge would
address detergents (surfactants, phosphorous and nitrogen), solids, and oil and grease.
Pollutants addressed by controlling non-stormwater discharges (such as discharges from
flushing of water systems, pumped groundwater, or air conditioner condensate) include
chlorine, phosphorus, and metals.
IDDE-1 GOAL STRATEGY
[For example:] Identify, investigate, control, and/or eliminate illicit discharges (illicit
connections, illegal dumping, and spills) to the storm water system.
Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
IDDE-1.X: WASTE PICK UP AND REMOVAL SERVICES
IDDE-1.X: IMPLEMENT ORDINANCE TO PROHIBIT NON-STORMWATER DISCHARGES
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IDDE-1.X: DETECT AND ADDRESS NON-STORMWATER DISCHARGES
IDDE-1.X: CONDUCT FIELD INSPECTIONS
IDDE-1.X: SPILL RESPONSE PLAN
IDDE-1.X: PLAN FOR ENFORCEMENT ACTIONS
IDDE-1.X: ILLICIT DISCHARGE DETECTION AND ELIMINATION PROGRAM DEVELOPMENT
IDDE-1.X: DEVELOPING A USED OIL RECYCLING PROGRAM
IDDE-1.X: ILLEGAL DUMPING CONTROL
IDDE-1.X: TRASH AND DEBRIS MANAGEMENT
IDDE-1.X: PREVENTING SEPTIC SYSTEM FAILURE
IDDE-1.X: SEWAGE FROM RECREATIONAL ACTIVITIES
IDDE-2 GOAL STRATEGY
[For example:] Maintain an up-to-date storm sewer system map, showing the location of
all outfalls and the names and location of all waters of the United States that receive
discharges from those outfalls.
Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
IDDE-2.X: DEVELOP AND UPDATE STORM DRAINAGE MASTER PLAN
IDDE-3 GOAL STRATEGY
[For example:] Inform public employees, businesses, and the general public of hazards
associated with illegal discharges and improper disposal of waste.
Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
IDDE-3.X: ILLICIT DISCHARGE TRAINING PROGRAM
IDDE-3.X: ILLICIT DISCHARGE PUBLIC OUTREACH PROGRAM
IDDE-3.X: COMMUNITY HOTLINES
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IDDE BENCHMARKS
1. Increased enforcement capacity of non-point source contamination and illegal
discharges into waterways.
2. Adoption of Ordinance to Prohibit Non-Stormwater Discharges.
3. Minimal to no illicit discharges into the municipal stormwater system.
4. Funded storm drainage master plan capital improvement projects.
5. Completed storm drainage master plan capital improvement projects
6. Continue to update drainage master plan updated as needed.
7. Funded storm drainage master plan capital improvement projects.
8. Continue to train staff and re-train as needed.
9. Tracked the visual monitoring of outfalls during dry and wet weather conditions.
10. Photographed the conditions of streams upstream and downstream of outfalls
periodically.
11. Tracked the number of spills or illicit connections found each year.
Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
EPA. 1993. Investigation of Inappropriate Pollutant Entries into Storm Drainage
Systems: A User’s Guide. EPA/600/R-92/238.
M. Lalor and R. Pitt. Use of Tracers to Identify Sources of Contamination in Dry
Weather Flow IN: Watershed Protection Techniques. 3(1): 585-592
EPA’s Menu of BMPs for stormwater Phase II
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=3
LA County Model Illicit Discharge Program
http://ladpw.org/wmd/NPDES/ICID_TC.cfm
Stormwater case studies on illicit discharge detection and elimination
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Includes case studies of how Phase I and Phase II communities have implemented the illicit
discharge requirements.
http://cfpub.epa.gov/npdes/stormwater/casestudiesRam.cfm?submissionType=1&minmeasure=3
EPA Region 5 Illegal Dumping Prevention Program
Was established to exchange information and establish partnerships to develop and implement
strategies to combat illegal dumping. Model Illicit Discharge Ordinance
Is available from EPA's Nonpoint Source Program.
http://www.epa.gov/owow/nps/ordinance/discharges.htm
Wastewater Education Materials
To help municipal officials educate citizens on important wastewater issues.
http://www.epa.gov/npdes/wastewatermonth
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MINIMUM MEASURE #4 CONSTRUCTION SITE RUNOFF CONTROL (CS)
Ensure that the following examples of goal, goal overview, and goal strategies are accurate for
your city.
CS GOAL
To control erosion, sediment, and pollutant discharges and other water quality impacts
from active construction sites associated with new development and redevelopment during
construction.
CS GOAL OVERVIEW
The design and construction of new development and redevelopment can have significant
impacts on water quality. If not properly managed, ground-disturbing construction can
result in erosion and the discharge of sediment and other pollutants into storm drains and
local water bodies.
The main pollutants addressed by the construction erosion and sediment control goal are
total suspended solids (TSS) and pollutants (such as metals and mercury) that bind to TSS.
Construction site controls also reduce the discharge of floatable litter and debris, concrete
washwater, bacteria, slurry, and paints and other toxic building materials into the
stormwater system.
CS-1 GOAL STRATEGY
[For example:] Enact an ordinance or other regulatory mechanism to require erosion and
sediment controls, as well as sanctions to ensure compliance.
Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
CS-1.X: DEVELOP CODE EROSION AND SEDIMENT CONTROL SECTION
CS-1.X: CONTINUE TO ENFORCE HILLSIDE DEVELOPMENT REGULATIONS
CS-1.X: NPDES 1200-C PERMIT
CS-1.X: DEVELOPMENT CODE SURFACE WATERS AND DRAINAGE
CS-2 GOAL STRATEGY
[For example:] Implement and refine stormwater management requirements for
construction site operators to implement appropriate waste, erosion and sediment control
BMPs.
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Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
CS-2.X: EROSION PREVENTION AND SEDIMENT CONTROL MANUAL BOOKLET
CS-2.X: RECEIVE INFORMATION FROM THE PUBLIC
CS-2.X: CONSTRUCTION SEQUENCING
CS-2.X: CONSTRUCTION SITE OPERATOR BMP INSPECTION AND MAINTENANCE
CS-2.X: LAND GRADING
CS-2.X: PRESERVING NATURAL VEGETATION
CS-3 GOAL STRATEGY
[For example:] Enhance procedures for site plan review, which incorporate consideration
of potential water quality impacts.
Here are strategies you may want to consider to help you meet your IDDE Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
CS-3.X: SITE DESIGN REVIEW
CS-3.X: TRAIN PLAN REVIEWERS AND FIELD INSPECTORS
CS-3.X: REVIEW SITE PLANS FOR EROSION AND SEDIMENT (E&S) CONTROLS
CS-3.X: CONSTRUCTION PHASE PLAN REVIEW
CS-3.X: CONTRACTOR TRAINING AND CERTIFICATION
CS-3.X: LOCAL ORDINANCES FOR CONSTRUCTION SITE RUNOFF CONTROL
CS-3.X: MUNICIPAL CONSTRUCTION INSPECTION PROGRAM
CS-3.X: TRAINING FOR PLAN REVIEWERS AND FIELD INSPECTORS
CS-3.X: INSPECT CONSTRUCTION SITES
CS-3.X: MUNICIPAL PROGRAM OVERSIGHT
CS BENCHMARKS
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1. Adopt and enforce erosion prevention and sediment control ordinance
2. Current records of erosion prevention and sediment control ordinance enforcement
with new computer program “ePermitting”14
3. Current records of hillside development requirements and building permits with
“ePermitting”.
4. Developed inspection timeline using “ePermitting” or other program.
5. Staff member identified as 1200-C permit as enforcing officer.
6. Erosion and sediment control BMPs are implemented at all new development and
redevelopment.
7. Train plan reviewers and inspectors; re-train as needed.
8. Track the number of plans that are reviewed for adequate erosion and sediment
controls.
9. Track the number of local construction operators who are training on proper
erosion and sediment controls.
10. Track the number of erosion and sediment control inspections at construction sites.
Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
EPA’s Menu of BMPs for stormwater
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=4
Oregon DEQ Erosion and Sediment Control Manual and Inspector Guidance Booklet
http://www.deq.state.or.us/wq/stormwater/escmanual.htm
Stormwater Management Manual for Western Washington
http://www.ecy.wa.gov/programs/wq/stormwater/manual.html
Construction Industry Compliance Assistance Web Site
Provides plain language information on environmental rules, including stormwater, for the
construction industry.
14
www.BuildingPermits.Oregon.gov
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http://www.cicacenter.org/
Urban Management Measures Guidance Chapter 5
Focuses on construction site erosion, sediment, and chemical control.
http://www.epa.gov/owow/nps/urbanmm/index.html
Stormwater Pollution Prevention Plans for Construction Activities
Describes the steps necessary for a designer or contractor to develop a stormwater pollution
prevention plan for construction activity.
http://cfpub.epa.gov/npdes/stormwater/swppp.cfm
Model Ordinances
Including erosion and sediment control ordinances, are available from EPA's Nonpoint Source
Program.
http://www.epa.gov/owow/NPS/ordinance/erosion.htm
Stormwater case studies on municipal construction programs
Includes case studies of how a Phase I or Phase II community has implemented the construction
requirements.
http://cfpub.epa.gov/npdes/stormwater/casestudiesRam.cfm?submissionType=1&minmeasure=4
Stormwater outreach materials for the construction industry
Including brochures in English and Spanish, and a poster are available for download.
http://cfpub.epa.gov/npdes/stormwatermonth.cfm
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MINIMUM MEASURE #5 POST-CONSTRUCTION STORMWATER MANAGEMENT (PCSM)
In developing a stormwater regulation, the following steps should be considered:
Step 1: Discuss and decide on water quality and quantity outcomes. Local communities need to
consider the importance of achieving certain outcomes, including water quality protection,
groundwater recharge, stream channel protection, conveyance, and flood control. All of these
outcomes can be achieved by mimicking pre-settlement hydrology.
Step 2: Adopt design standards that achieve desired outcomes. After determining the applicable
outcomes, the next step is developing standards for the community. The recommended criteria
presented in this chapter are designed to meet comprehensive water quantity (total volume and
peak rate) and water quality objectives. Other factors that should be discussed include waivers
for certain site considerations, how to address redevelopment, and the need to address flooding
concerns.
Step 3: Select the stormwater methodologies to meet the design standards. A final decision is
determining the acceptable calculation methodologies that can be used to meet the standards.
BMP site design based on no increase of the pre-settlement runoff condition for all storms up to
the two-year, 24-hour return frequency storm provides the most assurance that the stream
channel will be protected. If using the SCS/SBUH 24-hour design storm modeling approach, see
the OSU Extension Stormwater Solutions website for which size storms you might use for any
given goal (i.e. Flood prevention/attenuation, stream protection, etc):
http://extension.oregonstate.edu/stormwater/precipitation-maps.
Communities implementing a volume control standard may need to provide for alternatives from
the standard to account for constraints on certain sites. Site constraints may include but aren’t
limited to: poor draining soils, contaminated soils, bedrock, karst topography, high water table,
or other constraints where commonly used BMPs would either be impractical, pose a threat of
groundwater contamination, and stormwater reuse is not feasible. Some decision trees have been
developed by OSU Extension to help navigate when these constraints are problematic:
http://extension.oregonstate.edu/stormwater/decision-trees. Communities should require
documentation of the reason an alternative design standard is being used such as evaluation of
reuse alternatives or potential for evapotranspiration mechanisms such as green roofs. Since soils
are highly variable, communities should require infiltration testing on all development projects
following one of the methods outlines in the OSU ExtensionStormwater Solutions Fact Sheet
“Infiltration Testing”:
http://extension.oregonstate.edu/stormwater/sites/default/files/Infiltration%20Testing.pdf
A city may wish to identify an alternative standard to areas which have specific, known design
limitations. At a minimum for qualifying sites where low impact development has been ruled out
for reasons mentioned above, an alternative standard should be applied that requires detention of
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the one-year, 24-hour storm with release at the pre-settlement peak runoff rate. Detention alone
will not protect water quality or habitat on a watershed scale, so communities should not rely on
this as a default. Detention will also not provide water quality treatment, so a water quality
volume treatment requirement by some other means should also be specified. If the subbasin has
a TMDL for Temperature, special attention to detention design will be needed to ensure that
temperature pollution is not exacerbated.
A treatment standard such as “capture and treat 80% of the annual average runoff volume based
on documented local or regional rainfall frequency and intensity” in conjunction with the design
criteria for the pollutant removal efficiency for specific structural controls (e.g., 80% of TSS)
would ensure that the treatment came closer to many of the TMDL’s planning targets.
A post-construction stormwater control program should have some basic elements (i.e., triggers
for controls, site performance standard, treatment standards, sizing criteria, and design
specification) that will provide some level of assurance that the runoff generated from new
impervious surfaces is adequately treated. Additionally, given the recent evaluation of the
International Stormwater BMP database, the general stormwater management approach should
be: (1st) better site design/nonstructural controls to reduced runoff and (2nd) the use of LID
and (3rd) Detention of the Flood Storm and treatment of the Water Quality Storm.
PCSM GOAL
To protect water quality by addressing stormwater runoff from new development and
redevelopment projects as defined by the municipal code that discharge into the City’s
storm water system. Applicable controls could include preventive actions, such as
protecting or restoring sensitive natural resource areas or the use of structural controls
such as grassed swales or porous pavement or oil water separators that prevent pollutants
from entering into and discharging from the municipal storm water system.
PCSM GOAL OVERVIEW
Development alters the natural landscape by increasing impervious surfaces, compacting
soils in landscape areas, and introducing pollutants, which are then transported in
stormwater runoff. The natural stormwater management provided by vegetation includes:
filtering pollutants, slowing down flow, and providing shade. Preserving and restoring
vegetation, streamside buffers, and pervious areas can help restore these critical functions.
Land use changes impact stormwater in primarily two ways: by increasing stormwater
flow (quantity) and the pollutants available to be transported in stormwater runoff
(quality).
Increases in stormwater quantity can result in downstream flooding, stream bank erosion,
and decreases in infiltration or recharge of groundwater. The impacts on water resources
caused by increased impervious surfaces have been well documented, with a generally
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linear relationship between increased imperviousness and decreased water quality. Even
when runoff is treated on-site before being released, stream bank erosion downstream of
the site may make meeting TMDL goals challenging.
Development also impacts water quality by introducing pollutant loads into stormwater
runoff. Oils, grease, litter and toxic substances collect on impervious and semi-pervious
surfaces like lawns and run off into waters of the U.S. Studies have shown a direct
correlation between total impervious area and in-stream aquatic habitat for salmonid
species. Other studies have shown that up to 10 times more pesticides, herbicides, and
fertilizers may run off of lawns than farmland.
The main pollutants addressed by these BMPs are total suspended solids (TSS) and
pollutants (such as metals and bacteria) that bind to TSS. Post-construction site controls
also reduce the discharge of floatable litter and debris, concrete washwater, bacteria,
slurry, and paints. The main pollutants addressed by PCSM-4 are nutrients (phosphorous
and nitrogen), temperature, total suspended solids (TSS), and pollutants that bind to TSS,
herbicides, and pesticides.
PCSM-1 GOAL STRATEGIES
For example: Use ordinances or other regulatory mechanisms to require BMPs for postconstruction runoff from new development and redevelopment projects to reduce
pollutants in discharges into and from the municipal storm water system.
Here are strategies you may want to consider to help you meet your PCSM Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
PCSM-1.X: DEVELOPMENT CODE POST-CONSTRUCTION RUNOFF CONTROL SECTION
PCSM-1.X: LAND USE AND ZONING TOOLS
PCSM-1.X: PARK AND OPEN SPACE LAND ACQUISITION AND PROTECTION
PCSM-1.X: STORMWATER FACILITY LAND ACQUISITION
PCSM-2 GOAL STRATEGIES
For example: Develop and implement strategies which include a combination of structural
and/or non-structural best management practices (BMPs).
Here are strategies you may want to consider to help you meet your PCSM Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
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PCSM-2.X: STORMWATER DESIGN AND MAINTENANCE MANUAL (SWDMM)
PCSM-2.X: SITE PLAN R EVIEW FOR POST-CONSTRUCTION BMPS
PCSM-2.X: IMPLEMENT NON-STRUCTURAL BMP S FOR SITE PLANS
Examples of non-structural BMPs that will help you meet your TMDL goals follows;
however, not all practices provide the same degree of treatment. Recommendations for the
most simple, cost-effective, and effective practices can be found in the Stormwater
Management Manual. This list is not complete, so feel to propose different or additional
practices.
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Conservation Easements
Development Districts
Eliminating Curbs and Gutters/Narrower Residential Streets
Open Space Design/Protection of Natural Features
Redevelopment
Riparian/Forested Buffer
Street Design Standards
Parking Lot Design Standards
Urban Forestry
Compost Amendment of Disturbed Soils
PCSM-2.X: IMPLEMENT STRUCTURAL BMPS
Examples of structural BMPs that will help you meet your TMDL goals follows;
however, not all practices provide the same degree of treatment. Recommendations for the
most simple, cost-effective, and effective practices can be found in the Stormwater
Management Manual. This list is not complete, so feel to propose different or additional
practices.








o
o
o
o
Grassed Swales
Rain Gardens
Stormwater Planters
Infiltration Trench
Porous Pavement (i.e. Permeable Interlocking Concrete Pavement, Pervious
Concrete Pavement, Porous Asphalt Pavement)
Catch Basin Inserts
Vegetated Filter Strip
In-Line Storage
Stormwater Wetland
Green Roofs
Alum Injection
Manufactured/Proprietary Products for Stormwater Inlets
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PCSM-3 GOAL STRATEGIES
For example: Ensure adequate long-term operation and maintenance of BMPs.
Here are strategies you may want to consider to help you meet your PCSM Goal or you
may propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
PCSM-3.X: POST-CONSTRUCTION BMPS STAFF TRAINING
PCSM-3.X: POST-CONSTRUCTION BMPS MAINTENANCE
PCSM-3.X: INSPECTIONS OF STRUCTURAL POST-CONSTRUCTION BMPS
PCSM BENCHMARKS
1. Adopted post-construction runoff addition to development code
2. Keep record of enforcement using a computer program or other system
3. Adopted the SWDMM.
4. Revised SWDMM in concert with the 5 year TDML Implementation Plan review
5. Staff trained at least once per year on BMP design, maintenance, and inspection
6. All BMP facilities have signed maintenance agreements before construction.
7. Tracked the number of stormwater site plans and permanent stormwater control
plans that are reviewed.
8. Tracked the number of non-structural BMPs implemented.
9. Tracked the number of structural stormwater BMPs that are constructed and
maintained each year.
Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
EPA’s Menu of BMPs for stormwater Phase II
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=5
LID Academy Training Materials – OSU Extension Stormwater Solutions
http://extension.oregonstate.edu/stormwater/lid-academy
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Stormwater Home Page – OSU Extension Stormwater Solutions
http://extension.oregonstate.edu/stormwater/
“Infiltration Testing” Fact Sheet – OSU ExtensionStormwater Solutions
http://extension.oregonstate.edu/stormwater/sites/default/files/Infiltration%20Testing.pdf
Choose the Right Rain Garden Decision Tree – OSU ExtensionStormwater Solutions
Answer questions to determine whether infiltration is feasible and which type of rain garden
should be used. Fact sheets, construction & maintenance checklists, standard details and more
are available here.
http://extension.oregonstate.edu/stormwater/choose-right-rain-garden
Porous Pavement Siting Criteria Decision Tree– OSU ExtensionStormwater Solutions
Answer questions to determine whether porous pavement is feasible for a given location.
http://extension.oregonstate.edu/stormwater/porous-pavement-1
2008 Stormwater Management Manual – City of Eugene, Oregon
http://www.eugeneor.gov/portal/server.pt?space=CommunityPage&control=SetCommunity&CommunityID=689
&PageID=1795
2008 Stormwater Management Manual – City of Portland, Oregon
http://www.portlandonline.com/bes/index.cfm?c=47952
Stormwater Management Manual for Eastern Washington
http://www.ecy.wa.gov/biblio/0410076.html
2012 Draft Stormwater Management Manual for Western Washington
http://www.ecy.wa.gov/programs/wq/stormwater/wwstormwatermanual/2012draft/2012draftS
WMMWW.html
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MINIMUM MEASURE #6 POLLUTION PREVENTION AND GOOD HOUSEKEEPING (PP)
This section provides the goal, an overview, and the strategies of your pollution prevention and
good housekeeping SWMP component. Include any existing strategies your city has regarding
street sweeping, catch basin cleaning, etc.
PP GOAL
To prevent or reduce pollutant runoff from municipal operations.
PP OVERVIEW
It is important that a municipality’s own operations minimize contamination of stormwater
discharges and serve as a model for the entire regulated area. Preventing pollution is easier
and more cost-effective than cleaning up pollution “after the fact”. Municipal operations can
contribute significant amounts of pollutants to stormwater. Examples of municipal
operations that can negatively impact stormwater runoff – and ultimately water quality –
include:

Landscaping and maintaining parks, golf courses, and other municipal open spaces
(e.g., sidewalks and plazas). These areas can contribute pesticides, herbicides,
fertilizers, litter, and sediment to the storm drainage system if they are not properly
maintained, or if municipal staff does not carry out maintenance activities in an
efficient manner.

Washing, repairing, and fueling municipally-owned vehicles and equipment. Spills
and leaks not contained during repairs and fueling can contribute gasoline, oil, and
grease to the storm drainage system.

Maintaining city surfaces, including streets, parking lots, and buildings. Roads and
other paved areas collect pollutants such as heavy metals, oil and grease, sediment,
leaves and other organic material, and litter from vehicles and motorists. Sand for
deicing operations can also enter the storm drainage system. Another avenue for
pollutants to enter the storm drainage system is from power washing or sand
blasting buildings. These materials collect and wash into the storm drainage system
during the “first flush” of a rain event. Many municipalities have street sweeping
programs in place for aesthetic, safety, and public health reasons. These programs, if
implemented properly, can reduce the amount of pollutants entering the storm
drainage system.

Waste and materials storage, particularly in uncovered areas. Given all the activities
that a municipality conducts, there is a vast array of materials and wastes stored
outdoors at municipally-owned facilities. If spills or leaks of these materials occur or
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where materials are exposed to rain, water is likely to scour pollutants and carry
them to the storm drainage system.

Construction activities and other land disturbances. Like any other type of
construction activity, those initiated by the municipality can contribute sediment
and other pollutants associated with construction equipment to stormwater runoff.
By implementing pollution prevention procedures, employees can ultimately reduce
stormwater pollutants and save the municipality money over time. Preventing litter and
other debris from entering the system can reduce damage to the system and reduce the
need for expensive, time-consuming repairs and maintenance.
The main pollutants addressed by the pollution prevention and good housekeeping goal
are stream and river water temperature increases, total suspended solids (TSS) and
pollutants that bind to TSS, horticultural chemicals, metals, nutrients (phosphorous and
nitrogen), petroleum hydrocarbons, oil and grease, floatables (debris and litter), pathogens,
and chlorine from water system flushing. The goal’s strategies ensure that City staff have
the proper training to effectively implement the SWMP.
Municipal operations to be addressed:
•
Maintenance of Park and Open Space, Stormwater System, Roads, Highways, and
Parking Lots, and Vehicle and Equipment Washing
•
New Construction and Land Disturbances
•
Dust Control Practices
•
Open Channel and Structural Stormwater Controls
•
Flood Management Projects
•
Employee Training on O&M Plan Implementation
•
Stormwater Plans for Municipal Facilities
Note: This pollution prevention/good housekeeping program only applies to site and
facilities maintained within the municipality’s urban growth boundary.
PP-1 STRATEGY
For example: Develop and implement an operation and maintenance (O&M) plan with a
focus on pollution prevention that addresses municipal operations.
Here are strategies you may want to consider to help you meet your PP Goal or you may
propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
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PP-1.X: MUNICIPAL STORMWATER OPERATIONS AND MAINTENANCE PLAN
PP-1.X: ROADWAY AND BRIDGE MAINTENANCE
PP-1.X: STORM DRAIN SYSTEM CLEANING
PP-1.X: HAZARDOUS MATERIALS STORAGE
PP-1.X: MATERIALS MANAGEMENT
PP-1.X: SPILL RESPONSE AND PREVENTION
PP-1.X: INTEGRATED PEST MANAGEMENT
PP-2 STRATEGY
For example: Development and implement a training program for municipal employees.
Here are strategies you may want to consider to help you meet your PP Goal or you may
propose others. Remember to provide descriptions and tasks in a manner similar to
examples provided in other goal sections.
PP-2.X: MUNICIPAL STORMWATER OPERATIONS AND MAINTENANCE TRAINING
PP-2.X: MUNICIPAL EMPLOYEE TRAINING AND EDUCATION
PP-2.X: MUNICIPAL ACTIVITIES
PP-2.X: MUNICIPAL LANDSCAPING
PP-2.X: MUNICIPAL VEHICLE FUELING
PP-2.X: MUNICIPAL VEHICLE AND EQUIPMENT WASHING AND MAINTENANCE
PP-2.X: PARKING LOT AND STREET CLEANING
PP-2.X: ROAD GRAVEL APPLICATION AND STORAGE
PP BENCHMARKS
1. Complete development of an O&M Plan with specific goals, emphasizing the use of
integrated pest management, and implement the procedures described in the O&M
Plan during the TMDL 5 year update interim period.
2. Implement all pollution prevention/good housekeeping practices for park and open
space maintenance at all park areas and other open spaces maintained by the
jurisdiction.
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3. Conduct all vehicle and equipment washing in a self-contained covered building or a
designated wash area that meets the required criteria.
4. Implement dust control procedures on all public projects.
5. Inspect and maintain catch basins and other stormwater system facilities based on a
schedule described in the O&M plan.
6. Inspect structural stormwater controls on a schedule described in the O&M Plan or
as specified by the adopted Stormwater Design and Maintenance Manual or an
approved equivalent manual.
7. Implement required procedures on all roads, highways, and parking lots per the
O&M plan.
8. Prioritize all existing flood management projects to be identified and re-evaluated
with water quality considerations.
9. Train all employees involved in stormwater management or municipal maintenance
on the procedures in the O&M plan.
10. Submit permit application for municipal facilities that are required to be covered
under the NPDES Industrial Stormwater General Permit (1200-Z).
11. Tracked the number of pollution prevention plans developed.
12. Tracked the amount of deicing materials applied to roads.
13. Tracked the number of curb miles swept annually.
14. Tracked number of staff who attend low impact development workshops.
15. Tracked the number of employees trained on proper stormwater practices.
Additional Resources
The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
Pollution Prevention/Good Housekeeping for Municipal Operations – EPA Menu of
BMPs
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=min_measure&min_mea
sure_id=6
Vehicle and Equipment Wash water Discharges/Best Management Practices Manual
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http://www.ecy.wa.gov/biblio/95056.html
Recommended Practices Manual: A Guideline for Maintenance and Service of Unpaved
Roads, produced by Choctawhatchee, Pea and Yellow Rivers Watershed Management
Authority
http://www.epa.gov/owow/nps/unpavedroads.html
California Department of Transportation. 2003. Stormwater Training
http://www.dot.ca.gov/hq/construc/stormwater/swppp_training.html
City of Los Angeles Stormwater Program. No date. We Have a Mission& Preventing
Stormwater Pollution.
http://www.lastormwater.org/Siteorg/education/ctyemptrng.htm
City of Memphis. 2004. Stormwater Pollution Prevention Training For Industrial
Facilities in the City of Memphis.
http://www.cityofmemphis.org/images/Storm.ppt
Center for Watershed Protection. Urban Subwatershed Restoration Manual Series.
Manual 9, Version 1.0, September 2008. Municipal Pollution Prevention/Good
Housekeeping Practices.
http://www.cwp.org/store/free-downloads.html
North Central Texas Council of Governments. No date. Stormwater Pollution
Prevention: What We Can Do, Municipal Employees Training Resources.
http://www.nctcog.org/envir/SEEclean/stormwater/pubs/videos.asp
U.S. Environmental Protection Agency. 2005a. Stormwater Month Outreach Materials
and Reference Documents.
http://cfpub.epa.gov/npdes/stormwatermonth.cfm
U.S. Environmental Protection Agency. 2005b. NPDES Training Courses and
Workshops.
http://cfpub.epa.gov/npdes/outreach.cfm?program_id=0&otype=1
Stormwater case studies on good housekeeping
http://cfpub.epa.gov/npdes/stormwater/casestudiesRam.cfm?submissionType=1&minme
asure=6
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MEASURE #7 PROGRAM MANAGEMENT (PM)
PM GOAL
To ensure effective program management, coordination, and reporting.
PM OVERVIEW
A key focus of the City is to provide sound program management, coordination, and
reporting to ensure effective implementation of the Stormwater Management Plan (SWMP)
and compliance with permit conditions. This effort involves multiple City departments.
The program management goal does not in itself reduce pollutants; rather, it facilitates
pollutant reduction by ensuring that the SWMP is effectively implemented.
PM-1 STRATEGY
For example: Conduct program management, coordination, and reporting.
PM-1.X: CITY MANAGEMENT AND COORDINATION
PM-1.X: PARTNERSHIP WITH FEDERAL, STATE, AND COUNTY AGENCIES
PM-1.X: TMDL ANNUAL COMPLIANCE REPORT
a. The [jurisdiction] shall submit Annual Compliance Reports to DEQ by April
30th of each year. The purpose of the report is to convey clear, succinct
program information for the previous fiscal year (July 1 - June 30), in
compliance with the annual reporting requirements of the permit. The
reports also provide other interested parties with an overview of the SWMP’s
implementation status. In addition, the reports identify activities that are
planned for implementation in the coming fiscal year.
PM-1.X ADAPTIVE MANAGEMENT OF TMDL PROGRAM GOALS, STRATEGIES, AND BENCHMARKS
PM BENCHMARKS
1. Continue to provide overall program management through CDD and to work with
other City departments as necessary to implement the SWMP.
2. Continue to coordinate with federal, state, and county agencies as necessary to
implement the SWMP.
3. Continue to submit annual reports by April 30th of each year to DEQ’s Basin
Coordinator.
Additional Resources
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The following are resources and references for additional information to assist cities in
developing and implementing the model illicit discharge program. Delete these additional
resources from your template after completion.
Evaluating the Effectiveness of Municipal Stormwater Programs
A fact sheet for municipalities on how to evaluate the effectiveness of their municipal stormwater
programs.
http://www.epa.gov/npdes/pubs/region3_factsheet_swmp.pdf
Funding Stormwater Programs
A fact sheet for municipalities on alternatives for funding their stormwater program.
http://www.epa.gov/npdes/pubs/region3_factsheet_funding.pdf
Incorporating Environmentally Sensitive Development Into Municipal Stormwater
Programs
A fact sheet for municipalities on how to encourage or require low impact development practices
to meet stormwater goals.
http://www.epa.gov/npdes/pubs/region3_factsheet_lid_esd.pdf
Understanding Impaired Waters and Total Maximum Daily Load (TMDL)
Requirements for Municipal Stormwater Programs
A fact sheet for municipalities on how to determine if their storm drain system discharges to an
impaired waterbody and how to upgrade their stormwater management programs to address the
TMDL.
http://www.epa.gov/npdes/pubs/region3_factsheet_tmdl.pdf
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ANNUAL TMDL IMPLEMENTATION PLAN REPORTS
This appendix is a placeholder for all future TMDL annual reports submitted to DEQ. This
provides a quick reference for completed tasks, benchmarks reached, and programs used. The
annual report should include information used to evaluate program effectiveness and the
outcome of the evaluation.
This would also be a good place to report the US Census, and [population count] with a
population density of [density #] people per square mile (Appendix D)
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STORMWATER DESIGN AND MAINTENANCE MANUAL
The [jurisdiction]’s approach to stormwater management emphasizes the introduction of
vegetated surface facilities to treat and infiltrate stormwater on the property where the
stormwater runoff is created as part of a larger program that includes underground piping
of overflow on city streets, existing properties, etc. Infiltrating stormwater onsite with
vegetated surface facilities is a multi-objective strategy that provides a number of benefits,
including but not limited to pollution reduction, volume and peak flow reduction, and
groundwater recharge. These benefits play a critical role in protecting stormwater
infrastructure and improving watershed health. The SWDMM complements and supports
the City’s Stormwater Management Plan, [the Storm Drainage Master Plan,] and other
City standards and practices by defining best management practices and/or minimum
engineering criteria for the design of public infrastructure including stormwater collection,
treatment, and distribution systems. It also provides the guidelines for the maintenance
and operation of those systems.
There are many examples of design manuals available from cities like Portland, Gresham,
Florence, and Ashland. There is also a design manual template available from DEQ.
City of Gresham Water Quality Manual
http://greshamoregon.gov/city/city-departments/environmental-services/watershedmanagement/template.aspx?id=20715
City of Florence Stormwater Design Manual
http://www.ci.florence.or.us/sites/default/files/fileattachments/approved_stormwater_design_ma
nual_12_6_10.pdf
(City of Ashland) Rogue Valley Stormwater Quality Design Manual
http://www.rvss.us/Documents/Stormwater/DesignManual.pdf
Portland Stormwater Management Manual
http://www.portlandonline.com/bes/index.cfm?c=47952
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APPENDIX A: TOTAL MAXIMUM DAILY LOAD REGULATIONS
ORS 340-042-0080 – IMPLEMENTING A TOTAL MAXIMUM DAILY LOAD
(1) Management strategies identified in a WQMP to achieve wasteload and load allocations in a
TMDL will be implemented through water quality permits for those sources subject to permit
requirements in ORS 468B.050 and through sector-specific or source-specific implementation plans
for other sources. WQMPs will identify the sector and source-specific implementation plans
required and the persons, including DMAs, responsible for developing and revising those plans.
(4) Persons, including DMAs other than the Oregon Department of Forestry or the Oregon
Department of Agriculture, identified in a WQMP as responsible for developing and revising sectorspecific or source-specific implementation plans must:
(a) Prepare an implementation plan and submit the plan to the Department for review and
approval according to the schedule specified in the WQMP. The implementation plan must:
(A) Identify the management strategies the DMA or other responsible person will
use to achieve load allocations and reduce pollutant loading;
(B) Provide a timeline for implementing management strategies and a schedule for
completing measurable milestones;
(C) Provide for performance monitoring with a plan for periodic review and revision
of the implementation plan;
(D) To the extent required by ORS 197.180 and OAR chapter 340, division 18,
provide evidence of compliance with applicable statewide land use requirements;
and
(E) Provide any other analyses or information specified in the WQMP.
(b) Implement and revise the plan as needed.
(5) For sources subject to permit requirements in ORS 468B.050, wasteload allocations and other
management strategies will be incorporated into permit requirements.
Stat. Auth.: ORS 468.020, ORS 468B.020, ORS 468B.030, ORS 468B.035 & ORS 468B.110
Stats. Implemented: ORS 468B.020, ORS 468B.110
Hist.: DEQ 18-2002, f. & cert. ef. 12-20-02; DEQ 10-2011, f. & cert. ef. 7-13-11
Each TMDL is includes a water quality management plan that can be found at
http://www.deq.state.or.us/wq/tmdls/tmdls.htm
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The Willamette Basin TMDL Water Quality Management plan is provided below as an example.
These WPMPs vary somewhat from basin to basin and jurisdictions should familiarize
themselves with the one for their basin.
FOR EXAMPLE: WILLAMETTE BASIN TMDL CHAPTER 14 – WATER QUALITY
MANAGEMENT PLAN15
DMAS NOT COVERED BY A MS4 PERMIT
Because of the potential for storm water runoff to be a significant source of TMDL pollutants, ODEQ
will require DMAs with a population greater than 10,000 that are not covered under a MS4 permit
to address each of the storm water control measures described below.
1. Pollution Prevention in Municipal Operations
a. The DMA must develop and implement an operation and maintenance program that
includes a training component and has the ultimate goal of preventing or reducing
pollutant runoff from municipal operations; and
b. Using training materials that are available from ODEQ, USEPA, or other
organizations, the DMA’s program must include employee training to prevent and
reduce storm water pollution from activities including, but not limited to, park and
open space maintenance, fleet and building maintenance, new municipal facility
construction and related land disturbances, design and construction of street and
storm drain systems, and storm water system maintenance.
2. Public Education and Outreach on Storm Water Impacts
a. The DMA must implement a public education program to distribute educational
materials to the community or conduct equivalent outreach activities about the
impacts of storm water discharges on water bodies and the steps that the public can
take to reduce pollutants in storm water runoff.
3. Public Involvement/Participation
a. The DMA must at a minimum, comply with State, Tribal, and local public notice
requirements when implementing a public involvement/participation program.
4. Illicit Discharge Detection and Elimination
The DMA must:
a. Develop, implement and enforce a program to detect and eliminate illicit discharges
[as defined in 40 CFR §122.26(b)(2)] into the DMA’s system;
15
http://www.deq.state.or.us/wq/tmdls/docs/willamettebasin/willamette/chpt14wqmp.pdf
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b. Develop, if not already completed, a storm sewer system map, showing the location
of all outfalls and the names and location of all waters of the United States and/or
the State of Oregon that receive discharges from those outfalls;
c. To the extent allowable under State or local law, effectively prohibit, through
ordinance, or other regulatory mechanism, non-storm water discharges into the
DMA’s storm sewer system and implement appropriate enforcement procedures
and actions. Possible sanctions include non-monetary penalties (such a stop work
orders), fines, bonding requirements, and/or permit denials for non-compliance.
d. Develop and implement a plan to detect and address non-storm water discharges,
including illegal dumping, to the DMA’s system;
e. Inform public employees, businesses, and the general public of hazards associated
with illegal discharges and improper disposal of waste; and
f.
Address the following categories of non-storm water discharges or flows (illicit
discharges) if the DMA identifies them as substantial contributors of pollutants to
the DMA’s system: water line flushing, landscape irrigation, diverted stream flows,
rising groundwaters, uncontaminated groundwater infiltration (as defined at 40
CFR §35.2005(20)), uncontaminated pumped groundwater, discharges from potable
water sources, foundation drains, air conditioning condensation, irrigation water,
springs, water from crawl space pumps, footing drains, lawn watering, individual
residential car washing, flows from riparian habitats and wetlands, de-chlorinated
swimming pool discharges, and street wash water. Discharges or flows from fire
fighting activities are excluded from the effective prohibition against non-storm
water and need only be addressed where they are identified as substantial sources
of pollutants to waters of the United States and the State of Oregon.
g. The DMA must develop a process to respond to and document complaints relating
to illicit discharges.
5. Construction Site Storm Water Runoff Control
The DMA must develop, implement, and enforce a program to reduce pollutants in any storm
water runoff to the DMA’s system from construction activities that result in a land disturbance
of greater than or equal to one acre. Reduction of storm water discharges from construction
activity disturbing less than one acre must be included in the DMA’s program if that
construction activity is part of a larger common plan of development or sale that would disturb
one acre or more. The DMA’s program must include the development and implementation of, at
a minimum:
a. An ordinance or other regulatory mechanism to require erosion and sediment
controls, as well as sanctions to ensure compliance, to the extent allowable under
State or local law;
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b. Requirements for construction site operators to implement appropriate erosion and
sediment control best management practices;
c. Requirements for construction site operators to prevent or control waste that may
cause adverse impacts to water quality such as discarded building materials,
concrete truck washout, chemicals, litter, and sanitary waste at the construction
site;
d. Procedures for site plan review that incorporate measures to prevent or control
potential water quality impacts;
e. Procedures for receipt and consideration of information submitted by the public;
and
f.
Procedures for site inspection and enforcement of control measures.
6. Post-Construction Storm Water Management in New Development and Redevelopment
The DMA must:
a. Develop, implement, and enforce a program to ensure reduction of pollutants in
storm water runoff from new development and redevelopment projects that disturb
one acre or more, or less than one acre if they are part of a larger common plan of
development or sale, and discharge into the DMA’s system. The DMA’s program
must ensure that controls are in place that would prevent or minimize water quality
impacts.
b. Develop and implement strategies that include a combination of structural or nonstructural BMPs appropriate for the DMA’s community, and
i. Use an ordinance or other regulatory mechanism to address postconstruction runoff from new development and redevelopment projects to
the extent allowable under State or local law;
ii. Ensure adequate long-term operation and maintenance of BMPs; and
iii. Ensure adequate enforcement of ordinance or alternative regulatory
program.
The TMDL implementation plan for these DMAs shall include information as to the extent of the
problem related to storm water and the actions that will be taken to implement these control
measures to address it. The TMDL implementation plan, which must be submitted to ODEQ within
18 months following issuance of the TMDL, must include a timeline that demonstrates how these
measures will be implemented within five years unless otherwise agreed to by the Department.
Failure to adequately address these control measures may result in ODEQ requiring the DMA to
apply for a MS4 permit as authorized by the federal Phase II storm water regulations.
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MUNICIPAL STORM WATER REQUIREMENTS FOR NON-MS4 COMMUNITIES IDENTIFIED AS
DESIGNATED MANAGEMENT AGENCIES (DMA):

The TMDL Implementation Plans must include best management practices that control
stormwater and minimize soil erosion to reduce runoff of mercury and bacteria.

The DMA’s TMDL Implementation Plan is due to ODEQ 18 months following the issuance of
the TMDL
DMAs with populations under 10,000 will be expected to give consideration to the storm water
control measures in the process of developing their implementation plans. This should include a
description of the extent of the problem and the actions that will be taken to address it, as
appropriate. Requirements for these implementation plans are presented in DEQ’s Internal
Management Directive for developing Implementation Plans, available upon request from DEQ’s
regional offices.
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APPENDIX B: STORM WATER PHASE II REGULATIONS
EXCERPT: 40 CRF 122.34 STORM WATER PHASE II REGULATIONS
WHO IS AFFECTED BY THE PHASE II SMALL MS4 PROGRAM?
Use the following paragraphs under this heading to determine whether or not your city is a
candidate for a regulated small MS4 or if you are eligible for a waiver. The definition of an
MS4 and the distinction between small, medium, and large MS4s is provided below. This
section also attempts to clarify possible implementation issues related to determining one’s
status as an operator of a regulated small MS4.
WHAT IS A MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)?
What constitutes a MS4 is often misinterpreted and misunderstood. The term MS4 does not
solely refer to municipally-owned storm sewer systems, but rather is a term of art with a
much broader application that can include, in addition to local jurisdictions, state
departments of transportation, universities, local sewer districts, hospitals, military bases,
and prisons. A MS4 also is not always just a system of underground pipes – it can include
roads with drainage systems, gutters, and ditches.
WHAT IS A SMALL, MEDIUM, OR LARGE MS4?

EPA’s NPDES stormwater permitting program labels MS4s as either “small,”
“medium,” or “large” for the purposes of regulation.

A small MS4 is any MS4 that is not already covered by the Phase I stormwater
program. Small MS4s include federally-owned systems, such as military bases.

The Phase I stormwater program covers medium and large MS4s. Phase I MS4s were
automatically designated nationwide as medium MS4s if they were located in an
incorporated place or county with a population between 100,000 - 249,999 or as
large MS4s if located in an incorporated place or county with a population of
250,000 or greater. Many MS4s in areas below 100,000 in population, however,
have been individually brought into the Phase I program by NPDES permitting
authorities. Such already regulated MS4s do not have to develop a Phase II program.
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The following Oregon cities are already covered by MS4 Phase I permits:
Eugene, Gladstone, Happy Valley, Johnson City, Lake Oswego, Milwaukie, Oregon City,
Portland, Rivergrove, Salem, West Linn, Wilsonville, and all cities using the stormwater
system provided by Clean Water Services.
The following 13 Oregon cities are already by MS4 Phase II permits:
Ashland, Bend, Central Point, Corvallis, Keizer, Medford, Philomath, Phoenix, Springfield,
Talent, Troutdale, Turner, and Wood Village.
ARE ALL SMALL MS4S COVERED BY THE PHASE II FINAL RULE?
No. The universe of small MS4s is quite large since it includes every MS4 except for the
approximately 900 medium and large MS4s already regulated under the Phase I
stormwater program. Only a select sub-set of small MS4s, referred to as regulated small
MS4s, is covered by the Phase II Final Rule, either through automatic nationwide
designation or designation on a case-by-case basis by the NPDES permitting authority.
HOW IS A SMALL MS4 DESIGNATED AS A REGULATED SMALL MS4?
A small MS4 can be designated by the permitting authority as a regulated small MS4 in one
of three ways:
1. Automatic Nationwide Designation
The Phase II Final Rule requires nationwide coverage of all operators of small MS4s
that are located within the boundaries of a Bureau of the Census-defined “urbanized
area” (UA) based on the latest decennial Census. Once a small MS4 is designated into
the program based on the UA boundaries, it cannot be waived from the program if in
a subsequent UA calculation the small MS4 is no longer within the UA boundaries.
An automatically designated small MS4 remains regulated unless, or until, it meets
the criteria for a waiver.
Urbanized Areas
An urbanized area (UA) is a land area comprising one or more places – central
place(s) – and the adjacent densely settled surrounding area – urban fringe – that
together have a residential population of at least 50,000 and an overall population
density of at least 1,000 people per square mile. It is a calculation used by the
Bureau of the Census to determine the geographic boundaries of the most heavily
developed and dense urban areas.
EPA has developed a set of digitized maps for each urbanized area as defined by the
2000 U.S. Census. These maps are organized by state and are available at
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http://www.epa.gov/npdes/stormwater/urbanmaps. Additionally, information
about urbanized areas is available directly from the U.S. Bureau of the Census at
http://www.census.gov/geo/www/ua/ uaucbndy.html.
2. Potential Designation by the NPDES Permitting Authority – Required Evaluation
An operator of small MS4 located outside of a UA may have been designated as a
regulated small MS4 if the NPDES permitting authority determined that its
discharges cause, or have the potential to cause, an adverse impact on water quality.
The Phase II Final Rule required the NPDES permitting authority to develop a set of
designation criteria and apply them, at a minimum, to all small MS4s located outside
of a UA serving a jurisdiction with a population of at least 10,000 and a population
density of at least 1,000 people/square mile.
3. Potential Designation by the NPDES Permitting Authority – Physically
Interconnected
Under the final rule, the NPDES permitting authority was required to designate any
small MS4 located outside of a UA that contributes substantially to the pollutant
loadings of a physically interconnected MS4 regulated by the NPDES stormwater
program. The final rule did not set a deadline for designation of small MS4s meeting
this criterion.
Physically interconnected means that one MS4 is connected to a second MS4 in such
a way that it allows for direct discharges into the second system.
ARE WAIVERS FROM THE PHASE II PERMIT REQUIREMENTS POSSIBLE?
Yes, two waiver options are available to operators of automatically designated small MS4s
if discharges do not cause, or have the potential to cause, water quality impairment.
The first applies where:
(1) the jurisdiction served by the system is less than 1,000 people;
(2) the system is not contributing substantially to the pollutant loadings of a physically
interconnected regulated MS4; and
(3) if the small MS4 discharges any pollutants identified as a cause of impairment of any
water body to which it discharges, stormwater controls are not needed based on
wasteload allocations that are part of an EPA approved or established “total
maximum daily load” (TMDL) that addresses the pollutant(s) of concern.
The second applies where:
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(1) the jurisdiction served by the system is less than 10,000 people;
(2) an evaluation of all waters of the U.S. that receive a discharge from the system
shows that stormwater controls are not needed based on wasteload allocations that
are part of an EPA approved or established TMDL that addresses the pollutant(s) of
concern or an equivalent analysis; and
(3) it is determined that future discharges from the small MS4 do not have the potential
to result in exceedances of water quality standards.
The NPDES permitting authority is required to periodically review any waivers granted to
MS4 operators to determine whether any information required for granting the waiver has
changed. Minimally, such a review needs to be conducted once every five years.
ARE THERE ALLOWANCES FOR PHASING-IN PERMIT COVERAGE?
Yes. Small MS4s serving a jurisdiction with a population under 10,000 can be phased-in for
permit coverage, following establishment of a State watershed permitting approach. NPDES
permitting authorities that choose this option must establish a schedule to phase-in permit
coverage annually for approximately 20 percent of all small MS4s that qualify for such
phased-in coverage. Where this option is followed, all regulated small MS4s are required to
have permit coverage no later than March 8, 2007.
For additional information on MS4 designations review: Who's Covered? Designations and
Waivers of Regulated Small MS4s (Fact Sheet 2.1), http://cfpub.epa.gov/npdes/storm
water/swfinal.cfm.
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ABBREVIATIONS
BMP
Best Management Practices
CWA
Clean Water Act of 1977
DEQ
Oregon Department of Environmental Quality
DSL
Oregon Division of State Lands
EPA
U.S. Environmental Protection Agency
ESA
Endangered Species Act of 1973
F
Fahrenheit
FEMA
Federal Emergency Management Agency
GI
Green Infrastructure
LID
Low Impact Development
MS4
Municipal Separate Storm Sewer System
NEPA
National Environmental Policy Act
NFIP
National Flood Insurance Program
NMFS
National Marine Fisheries Service
NOAA
National Oceanic and Atmospheric Administration
NPDES
National Pollutant Discharge Elimination System
OAR
Oregon Administrative Rule
SDWA
Safe Drinking Water Act
SWMP
Stormwater Management Plan
SWDMM
Stormwater Design and Maintenance Manual
TAC
Technical Advisory Committee
TMDL
Total Maximum Daily Load
UGB
Urban Growth Boundary
UIC
Underground Injection Control
USACE
U.S. Army Corps of Engineers
USDA
U.S. Department of Agriculture
USFWS
U.S. Fish and Wildlife Service
USGS
U.S. Geological Survey
WPCF
Water Pollution Control Facility
WWTP
Wastewater Treatment Plant
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City of Cottage Grove
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Template Glossary
TEMPLATE GLOSSARY
Verify all glossary definitions corresponding to your city’s comprehensive plan and municipal
code definitions.
Base Flood - The flood having a one percent chance of being equaled or exceeded in any given year.
This is the regulatory standard also referred to as the "100-year flood." The base flood is the
national standard used by the National Flood Insurance Program and all Federal agencies for the
purposes of requiring the purchase of flood insurance and regulating new development. (See
"Floodplain, 100-Year" and "Flood, 100-Year.")
Beneficial Uses - The beneficial uses assigned by basin in the Oregon Administrative Rules for
water quality and for City streams are as follows: public and private domestic water supplies,
industrial water supplies, irrigation, livestock watering, anadromous fish passage, salmonids fish
rearing and spawning, resident fish and aquatic life, wildlife and hunting, fishing, boating, water
contact recreation, aesthetic quality, and hydropower, unless changed through a use attainability
analysis.
Best Management Practices – Schedules of activities, prohibitions of practices, maintenance
procedures, and other management practices to prevent or reduce the discharge of pollutants to
waters of the United States. BMPs also include treatment requirements, operating procedures, and
practice to control plant site runoff, spillage or leaks, sludge or waste disposal, or drainage from
raw material storage. For the purpose of this document, BMPs will refer to the structural measures
used to control pollutants at the source before they enter a stream such as:
Retention basins
Detention basins
Constructed wetlands
Infiltration practices
 Bioretention
 rain garden
 Stormwater planters
Filters
 Biofilters
 swales
 filter strips)
City Limits – Boundary line that identifies land within the City.
Detention Basin - A constructed pond designed to temporarily collect runoff from a development
to maintain the runoff rate to a specified pre-development flow.
Development – All improvements on a site, including: buildings; other structures; parking and
loading areas; landscaping; paved or graveled areas; areas devoted to exterior display, storage, or
activities; dredging, mining, grading and filling; and the partitioning or subdividing of land.
Development includes improved open areas such as plazas and walkways, but does not include
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natural geologic forms or unimproved land. Refer to the City’s Development Code for most up-to-date
definition.
Drainage way – An open linear depression, whether constructed or natural, that functions for the
collection and drainage of surface water. It may be permanently or temporarily inundated.
Endangered Species - Animals, plants, birds, fish, or other living organisms threatened with
extinction by man-made or natural changes in the environment.
Endangered Species Act – Under the Endangered Species Act (ESA), the government protects
endangered and threatened plants and animals (listed species) and the habitats upon which they
depend. The ESA requires federal agencies to ensure that any action they authorize, fund, or carry
out, will not likely jeopardize the continued existence of any listed species, or destroy or adversely
modify any critical habitat for those species.
Enhance – Augment into a more desirable condition.
Erosion – The wearing away of the earth’s surface as a result of the movement of wind, water, or
ice.
Flood, 100-year – A flood with a one percent chance of occurring in any given year. This is the
flood most commonly used for regulatory purposes and is called the base flood. This flood event
inundates the entire 100-year floodplain. (See "Base Flood.")
Floodplain – Area adjacent to a stream or a river channel that is covered by water when the river
or stream overflows its banks.
Floodplain, 100-year – Area adjacent to a stream or river channel that includes land with a range
of flooding frequency, from areas that flood frequently to the highest ground that has a one percent
chance of flooding in any given year. The 100-year floodplain is the area subject to base flood
regulations, and consists of the floodway and floodway fringe. (See "Base Flood" and "Flood, 100Year. ")
Floodway – The active flowing channel during a flood, as designated on flood maps for the City; the
channel of a river or other watercourse and the adjacent land areas that much be reserved in order
to discharge the base flood without cumulatively increasing the water surface elevation more than
a designated height.
Floodway Fringe – Area of the 100-year floodplain lying outside of the floodway.
Green Infrastructure – The protection and restoration of natural landscape features and the use of
natural systems (or systems engineered to mimic natural processes) to treat and detain stormwater
runoff. Often used interchangeably with the term “Low Impact Development”
Illicit Discharge – Illicit discharges are generally any discharge into a storm drain system this is
not composed entirely of stormwater. The exceptions include water from fire fighting activities and
discharges from facilities already under an NPDES permit. Illicit discharges are a problem because,
unlike wastewater which flows to a wastewater treatment plant, stormwater generally flows to
waterways without any additional treatment. Illicit discharges often include pathogens, nutrients,
surfactants, and various toxic pollutants.
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Impact – The consequences of a course of action; the effect of a goal, guideline, plan, or decision.
Intermittent Streams – An intermittent stream has flowing water during certain tunes of the year,
when groundwater provides water for stream flow. During dry periods, intermittent streams may
not have flowing water. Runoff from rainfall is a supplemental source of water for stream flow.
Low Impact Development - Methods that preserve natural resources and collect and
clean stormwater runoff on site to protect and improve water quality.
Maintain – Support, keep, and continue in an existing state or condition without
decline.
Non-Point Source –any source of pollution not associated with a distinct discharge point such as,
rainwater, runoff from agricultural lands, industrial sites, parking lots, and timber operations, as
well as escaping gases from pipes and fittings.
National Pollution Discharge Elimination System – Is the permitting system established by the
Environmental Protection Agency to administer the Federal Clean Water Act.
Permeability – Ability of the soil to absorb water.
Point Source – Any discernible, confined, and discrete conveyance, including but not limited to, any
pipe, ditch, channel, tunnel, conduit, well, discrete fissure, container, rolling stock concentrated
animal feeding operation (CAFO), landfill leachate collection system, vessel or other floating craft
from which pollutants are or may be discharged. This term does not include return flows from
irrigated agriculture or agricultural stormwater runoff.
Policy – Decision-making guideline for actions to be taken in achieving goals and the community's
vision.
Pre-development –land characteristics and habitat condition prior to manmade modifications.
This is generally described as “pre-Lewis and Clark times”, although there is a large body of
evidence that the land had been managed by fire and agriculture for many years prior to their
arrival.
Preserve – Save loss and reserve for a special purpose; the most strict non-degradation standard.
Protect – Save or shield from loss, destruction, or injury or to save for future intended use. After
"preserve," the next most strict non-degradation standard.
Redevelopment – Restoration or replacement of existing buildings, pavement, landscapes or other
infrastructure.
Restoration – intentional activity that initiates or accelerates the recovery of an ecosystem with
respect to its health, integrity and sus tainability16
Riparian areas – Lands adjacent to rivers, streams, lakes, ponds, and other water bodies. They are
transitional between aquatic upland zones, and as such, contain elements of both aquatic and
terrestrial ecosystems. They have high water tables because of their close proximity to aquatic
16
http://en.wikipedia.org/wiki/Restoration_ecology#Definition
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systems, soils that are usually made up largely of water-carrier sediments, and some vegetation
that requires free (unbound) water or conditions that are more moist than normal.
Sensitive Lands – Wetlands, significant trees, steep slopes, flood plains, Willamette River
Greenway and other natural resource areas designated for protection or conservation by the
Comprehensive Plan.
Shall - Expressing what is mandatory.
Should - Expressing what is desired, but not mandatory.
Significant Habitat Areas – A land or water area where sustaining the natural resource
characteristics is important or essential to the production and maintenance of aquatic life or
wildlife populations.
Significant Wetland – those wetland sites that provide functions or exhibit characteristics that
are pertinent to community planning decisions made at a local scale, for example within a UGB.
These wetland sites shall be identified by local governments according to the criteria and
procedures in sections 141-086-0340 and 141-086-0350
(http://arcweb.sos.state.or.us/pages/rules/oars_100/oar_141/141_086.html). A wetland should
be considered significant unless it was :
(A) Artificially created entirely from upland for the purpose of controlling, storing, or
maintaining stormwater, active surface mining, or active log ponds; or
(B) A ditch without a free and open connection to natural waters of the state (as defined in OAR
141-085-0010(9)) and which do not contain food or game fish (as defined in ORS 496.009);
or
(C) Less than one acre in size and created unintentionally as the result of:
a. Irrigation water overflow or leakage; or
b. Construction activity not related to compensatory mitigation for permitted wetland
impacts; or
(D) Of any size and created for the purpose of wastewater treatment, cranberry production,
farm or stock watering, settling of sediment, cooling industrial water, or as a golf course
hazard.
Stormwater – Water derived from a storm or conveyed through a storm sewer system.
Stormwater Facility – A facility design to manage stormwater runoff. Stormwater facilities include
vegetated swales and sand filters, wet or dry ponds, marshes, infiltration facilities, and structural
storm sewer devices.
Stormwater Functions - Includes sustaining aquatic habitats, cleansing, nutrient transfer, and
other beneficial functions.
Stormwater Management System – A collection of stormwater facilities (e.g. conveyance;
infiltration, evaporation, or treatment system or outfall).
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Stormwater Phase II Rules - Federal Clean Water Act regulations that require some jurisdictions
to address runoff water quality issues (See Appendix E for a summary of the Rules.)
Stream Channel –The depression between the banks worn by the regular and usual flow of the
water. The channel need not contain water year-round. This definition does not include irrigation
ditches, canals, storm or surface water runoff devices, or other manmade watercourses.
Stream System – The channel, subsurface flow, and adjacent corridor, including the floodplain.
Swale – A type of stormwater facility. Long, planted, open channel that carries, slows and absorbs
stormwater and filters out pollutants.
Topographic Constraint – Where existing slopes, landforms (e.g. streams, canals, rock
outcropping, etc.) or manmade feature (e.g. embankment or berm) make conformance with a Code
standard impracticable.
Urban Fringe – Area within the Urban Growth Boundary and outside the city limits.
Urban Growth Boundary - A line that circumscribes the urban fringe and the city limits and that is
intended by state and local regulations to contain the area available to urban development.
Water Bodies – Permanently or temporarily flooded lands which may lie below the deepwater
boundary of wetlands. Water bodies include rivers, streams, creeks, sloughs, drainage ways, lakes,
and ponds.
Watershed - Drainage area of a specific stream system. Small watersheds are components of larger
watersheds.
Waters of the United States – All waters that are currently used, were used in the past, or may be
susceptible to use in interstate or foreign commerce, including all waters subject to the ebb and
flow of the tide. Waters of the United States include all interstate waters and intrastate lakes, rivers,
streams (including intermittent streams), mudflats, sand flats, wetlands, sloughs, prairie potholes,
wet meadows, playa lakes, or natural ponds. [See 40 CFR 122.2 for the complete definition.]
Wetland – An area that is inundated or saturated by surface or groundwater at a frequency and
duration sufficient to support, and that under normal circumstances does support, a prevalence of
vegetation typically adapted for life in saturated soil conditions. Wetlands include swamps,
marshes, bogs, and similar areas.
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