EWA Phase II Compliance Table
Page 1
Disclaimer: The Compliance Table for the Eastern Washington MS4 Permit lists specific tasks and due
dates as guidance only. Any inadvertent discrepancies provided in this Table do not change the
requirements established by the 2019 Eastern Washington Phase II Municipal Stormwater NPDES
Permit.
Compliance with Standards
Permit Section
Deliverable
Due Date
S4.F.1
Notify Ecology in writing when becoming aware
that a discharge from the MS4 is causing or
contributing to a known or likely violation of
Water Quality Standards.
Within 30 days of becoming
aware of discharge.
S4.F.3
Review and revise Stormwater Management
Program to meet AKART, and submit a report to
Ecology.
Within 60 days of receiving
Ecology notice, or date
established by Ecology.
Stormwater Management Program
Permit Section
Deliverable
Due Date
S5.A.1
New Permittees – Develop and implement a
Stormwater Management Program, including the
SWMP Plan.
New Permittees – February 2,
2024. Annually, thereafter.
S5.A.4
Update Stormwater Management Program Plan
of required activities and actions for the
upcoming year.
Submit with Annual Report
by March 31.
S5.A.5.a.i
Track number of activities implemented for each
SWMP component.
Ongoing
New Permittees – August 1,
2021
S5.A.5.a.ii
Track estimated cost of development and
implementation of each SWMP component.
Provide to Ecology upon
request.
S5.A.6.b
Written description of internal coordination
process among departments.
Submit with Annual Report
by March 31, 2021.
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Public Education and Outreach
Permit Section
Deliverable
Due Date
S5.B.1
Implement Education and Outreach Program.
Ongoing
New Permittees – August 1,
2021
S5.B.1.b
Footnote 4
Measure understanding and adoption of targeted
behaviors for at least 1 target audience in at least
1 subject area. Use results of education and
outreach measurements to direct resources.
December 31, 2021
New Permittees – August 1,
2023
Public Involvement and Participation
Permit Section
Deliverable
Due Date
S5.B.2.a
Implement Program or policy for public input.
Document in SWMP.
Ongoing
New Permittees – August 1,
2020
S5.B.2.b
Post on website and make the latest version of
Annual Report and SWMP available to public.
Annually – May 31
Illicit Discharge Detection and Elimination (IDDE)
Permit Section
Deliverable
Due Date
S5.B.3
Footnote 6
Implement and enforce an IDDE Program to
prevent, detect, characterize, trace, and
eliminate illicit discharges into MS4.
Ongoing
New Permittees – August 1,
2021
S5.B.3.a
Footnote 7
Update map of MS4.
August 1, 2023
New Permittees – February 2,
2024
S5.B.3.a.v
Document connections to the MS4 authorized or
approved after August 1, 2019.
August 1, 2023
S5.B.3.a.ix
Electronic mapping format required with fully
described mapping standards.
August 1, 2021
S5.B.3.b.i,
Footnote 6
New Permittees – Implement ordinance or
regulatory mechanism to prohibit illicit
discharges and authorize enforcement actions.
New Permittees – August 1,
2021
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Permit Section
Deliverable
Due Date
S5.B.3.b.vii
Revise regulatory mechanism to meet
requirements of conditionally allowable and
prohibited non-stormwater discharges.
February 2, 2023
S5.B.3.c.iv
Footnote 9
Field assess at least 12%, on average, of MS4
within coverage area each year. Track total
cumulative percentage of MS4 assessed.
Ongoing. Beginning August 1,
2019.
New Permittees – December
31, 2023. Ongoing,
thereafter.
S5.B.3.c.vii
Footnote 10
Inform public employees, businesses, and
general public of hazards of illicit discharges and
improper disposal of waste.
August 1, 2019
New Permittees – August 1,
2022
S5.B.3.d
Footnote 11
Implement program, including procedures, to
address illicit discharges, illicit connections, and
spills into the MS4.
Ongoing
New Permittees – August 1,
2023. Ongoing, thereafter.
S.5.B.3.d.iv.(a)
S5.B.3.d.iv.(b)
S5.B.3.d.iv.(c)
S5.B.3.d.iv.(d)
Respond to all illicit discharges into the MS4,
determined to constitute a threat to human
health, welfare, or the environment, consistent
with G3.
Investigate or refer complaints, reports, or
monitoring information that indicates a potential
illicit discharge.
Investigate or report complaints, reports, or
monitoring information that indicates a potential
illicit connection. Initiate investigation to
determine source, ownership and volume of
discharge
Use compliance strategy to eliminate confirmed
illicit connection.
Immediately
Within 7 days.
Within 21 days.
Within 6 months.
S5.B.3.e
Train staff responsible for illicit discharge
response. Document and maintain records of
training provided and staff trained.
Ongoing. Follow-up, as
needed.
New Permittees – August 1,
2021. As needed, thereafter.
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Permit Section
Deliverable
Due Date
S5.B.3.f,
Appendix 7
Track and maintain records of IDDE activities.
Summarize all data for illicit discharges, illicit
connections, and spills found, reported, or
investigated during previous calendar year.
Document IDDE incidents in WQWebIDDE or
compatible spreadsheet according to Appendix 7.
Document IDDE incidents in WQWebIDDE or
submit data tracking system schema in a zipped
.xml according to Appendix 7.
Submit with Annual Report
by March 31.
March 31, 2021
March 31, 2022
Construction Site Stormwater Runoff Control
Permit Section
Deliverable
Due Date
S5.B.4
Implement and enforce a Construction Site
Stormwater Runoff Control Program to reduce
pollutants in stormwater from construction
activities that disturb one acre or more, or are
part of a common plan of development.
Ongoing
New Permittees – December
31, 2022
S5.B.4.a
Adopt and have an effective ordinance or
enforceable mechanism to ensure compliance
with construction site stormwater controls.
December 31, 2022
New Permittees – December
31, 2022
S5.B.4.b
Implement procedures for site plan review, which
incorporates consideration of water quality
impacts.
Ongoing
New Permittees – December
31, 2022
S5.B.4.b.i
Review SWPPPs prior to clearing and
construction.
Ongoing
S5.B.4.c
Implement procedures for construction site
inspection and enforcement on >80% of sites.
Qualified personnel to inspect:
(a) Prior to clearing and grading on sites with
high potential for sediment transport.
(b) During construction to verify proper ESC
BMP installation and maintenance. Follow
up, as necessary.
Ongoing
New Permittees – December
31, 2022
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Permit Section
Deliverable
Due Date
5.B.4.d
Train all staff involved with permitting, plan
review, construction site inspections, and
enforcement.
Ongoing. Follow-up, as
needed.
New Permittees – December
31, 2022. Follow-up, as
needed.
S5.B.4.e
Provide information on construction stormwater
training to construction site operators, staff, and
design professionals.
Ongoing
New Permittees – December
31, 2022
S5.B.4.f
Keep records of all training, site plan reviews,
inspections, and enforcement actions on
construction projects >1 acre or part of a
common plan of development.
Keep copies of information provided to
construction site operators.
Keep records of construction sites that apply for
the Erosivity Waiver.
For 5 years or until project is
complete, whichever is
longer.
Ongoing
Post-Construction Stormwater Management
Permit Section
Deliverable
Due Date
S5.B.5
Implement and enforce a Post-Construction
Stormwater Management Program to address
post-construction runoff to the MS4.
Ongoing
New Permittees – December
31, 2022
S5.B.5.a
Implement a regulatory mechanism that requires
post-construction stormwater controls at new
and redevelopment projects.
(See Permit for applicable submittal dates of
applications.)
December 31, 2022
S5.B.5.b.ii.(b)(3)
New Permittees – Develop criteria defining
infeasibility of meeting S5.B.5.b.ii.(b)(2) (retaining
10-year event runoff), if not already meeting
requirement.
New Permittees – Submit
with Annual Report by March
31, 2022.
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Permit Section
Deliverable
Due Date
S5.B.5.d.i-ii
Implement procedures for site inspection and
enforcement of post-construction structural
BMPs. Qualified personnel to inspect BMPs:
ï‚· At least once during installation.
ï‚· Upon final installation or project completion.
ï‚· At least once every 5 years.
Ongoing
New Permittees – December
31, 2022
S5.B.5.e
Provide training to all staff involved with
permitting, planning, review, inspection, and
enforcement.
Ongoing. Follow up, as
needed.
New Permittees – December
31, 2022. Follow-up, as
needed.
S5.B.5.g
Keep records of all projects >1 acre or part of a
common plan of development.
For 5 years or until project is
complete, whichever is
longer.
Municipal Operations and Maintenance
Permit Section
Deliverable
Due Date
S5.B.6
Footnote 15
Implement an Operations and Maintenance
Program to prevent or reduce pollutant runoff
from municipal operations.
Ongoing
New Permittees – December
31, 2023
S5.B.6.a
Implement a schedule of municipal Operation
and Maintenance activities (an O&M Plan).
Review and, if needed, update the Operations
and Maintenance Plan.
Ongoing. December 31, 2022.
New Permittees – December
31, 2023
S5.B.6.a.i.(h)
Implement site-specific SWPPPs for all material
storage areas, heavy equipment storage areas,
and maintenance areas.
December 31, 2022
New Permittees – December
31, 2023
S5.B.6.a.ii.(a)-(b) Inspect 95% of all stormwater treatment and flow
control facilities every 2 years. Inspect all catch
basins and inlets every 2 years.
Ongoing
New Permittees – December
31, 2023. Every 2 years
thereafter.
S5.B.6.a.ii.(c)
Spot check treatment and flow control facilities
for potential damage, and repair as soon as
practicable.
After 10-year/24-hour storm
event.
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Permit Section
Deliverable
Due Date
S5.B.6.b
Provide and document training for all employees
with primary construction, operations, or
maintenance job functions.
Ongoing. Follow-up, as
needed.
Stormwater Management Program for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.A.2-4
Develop and implement a Stormwater
Management Program; or,
Secondaries with a local MOU or agreement may
implement parts in accordance with their signed
MOU or Agreement with a local jurisdiction(s).
Ongoing or alternate
implementation schedule.
New Secondary Permittees –
4.5 years from initial
coverage date.
Public Education and Outreach for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.1
Implement stormwater education strategies.
Ongoing
New Secondary Permittees –
4.5 years from initial Permit
coverage date.
S6.D.1.a
Footnote 17
Label all inlets, “Dump no Waste – Drains to
Waterbody”. Relabel unreadable labels during
visual inspection and maintenance of drain inlets.
Ongoing. Within 90 days of
discovery.
New Secondary Permittees –
4 years from initial date of
Permit coverage. Within 90
days of discovery, thereafter.
S6.D.1.b
Distribute stormwater educational materials to
identified public.
Ongoing
New Secondary Permittees –
3 years from initial date of
Permit coverage.
Public Involvement and Participation for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.2.a-b
Make current Annual Report and updated SWMP
Plan available on website.
Annually – May 31
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Illicit Discharge Detection and Elimination for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.3.a
Comply with relevant ordinances, rules, and
regulations of local jurisdictions.
Upon initial date of Permit
coverage.
S6.D.3.b
Footnote 18
Implement policies prohibiting illicit discharges.
New Secondary Permittees – Develop and
implement policies prohibiting illicit discharges
and identify enforcement mechanisms.
Ongoing
New Secondary Permittees –
1 year from initial date of
Permit coverage.
S6.D.3.b
Footnote 19
Implement an enforcement plan to ensure
compliance with illicit discharge policies.
New Secondary Permittees – Develop and
implement an enforcement plan.
Ongoing
New Secondary Permittees –
18 months from initial date
of Permit coverage.
S6.D.3.c
Footnote 20
Maintain a storm sewer system map of known
storm drain outfalls and discharge points,
labeling receiving waters, and delineating
contributing areas.
Ongoing
New Secondary Permittees –
4.5 years from initial date of
Permit coverage.
S6.D.3.d
Footnote 21
Inspect at least 1/3 of known outfalls and
discharge points, and remove illicit discharges.
Keep records of field inspections.
New Secondary Permittees – Develop and
implement procedures to identify, inspect, and
remove any illicit discharges. Begin inspecting 1/3
of known outfalls and discharge points.
Ongoing
New Secondary Permittees –
2 years from initial date of
Permit coverage.
S6.D.3.e
Footnote 22
Implement a spill response plan.
Ongoing
New Secondary Permittees –
4.5 years from initial date of
Permit coverage.
S6.D.3.f
Provide staff training on BMPs for preventing
illicit discharges.
Ongoing. Follow-up, as
needed.
New Secondary Permittees –
2 years from initial date of
Permit coverage. Follow-up,
as needed.
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Construction Site Stormwater Runoff Control for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.4.a
Comply with all relevant construction stormwater
ordinances, rules, and regulations of local
jurisdictions.
Upon initial date of Permit
coverage.
S6.D.4.b
Where necessary, obtain a Construction
Stormwater General Permit (CSWGP) for
construction projects.
Upon initial date of Permit
coverage.
S6.D.4.c
Provide staff training on erosion and sediment
control BMPs and requirements.
Upon initial date of Permit
coverage.
Post-Construction Stormwater Management for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.5.a
Comply with all relevant post-construction
stormwater ordinances, rules, and regulations of
local jurisdictions.
Upon initial date of Permit
coverage.
S6.D.5.b
Coordinate with the local jurisdiction regarding
projects owned by other entities that discharge
into the MS4.
Upon initial date of Permit
coverage.
Pollution Prevention for Municipal Operations for Secondary Permittees
Permit Section
Deliverable
Due Date
S6.D.6.a
Footnote 23
Implement an Operation and Maintenance
(O&M) Plan for operations, activities, and/or
facilities.
New Secondary Permittees – Develop and
implement an Operation and Maintenance Plan.
Ongoing
New Secondary Permittees –
3 years from initial date of
Permit coverage.
S6.D.6.a.i
Regularly inspect and maintain all stormwater
facilities.
Ongoing
New Secondary Permittees –
3 years from initial date of
Permit coverage.
Page 10
Permit Section
Deliverable
Due Date
S6.D.6.a.i
Spot check treatment and flow control
stormwater facilities.
After 10-year/24-hour storm
event.
New Secondary Permittees –
3 years from initial date of
Permit coverage.
S6.D.6.a.vi
Prepare SWPPPs for material storage and heavy
equipment maintenance or storage yards.
Ongoing
New Secondary Permittees –
3 years from initial date of
Permit coverage.
S6.D.6.b
Obtain NPDES Permit coverage for all facilities
requiring an Industrial Stormwater General
Permit.
Upon initial date of Permit
coverage.
S6.D.6.d
Provide training for employees whose
construction, operations, or maintenance job
functions may impact…