HomeMy Public PortalAboutPhase II 2008-2013 PermitSTATE OF MISSOURI
DEPARTMENT OF NATURAL RESOURCES
MISSOURI CLEAN WATER COMMISSION
MISSOU STATE OPE TING PE
WATER POLLUTION CONTROL PROG
*
IT
General Operating Permit
in et impliamle with the Missouri Clean Water Law, (chapter 644 R.S. Mo. as amended, hereinafter, the Law), and the Federal
Water PoIlui ion Control Act (Public Law 92-500, 92nd Congress) as amended,
Permit No.: MO-R040005
Owner: Metropolitan St. Louis Sewer Dist.
Addams: 10 East Grand Avenue
St. Louis, MO 63147
Continuing Authority:
Facility Name:
Facility Address:
Legal Description:
lmitude Longitude
Receiving Stream
First Classified Stream- 1D#:
USGS # and Sub Watershed #
Same
MSD Small MS4
10 East Grand Avenue,
St. Louis, MO 63147
See Page 2
See Page 2
See Page 2
See Page 2
See Page 2
is authorized to discharge from the facility described herein, in accordance with the effluent limitations and monitoring
requirements as set forth herein.
FACILITY DESCRIPTION All Outfalls, SIC 9511
Discharges from Regulated Small Municipal Separate Storm Sewer Systems
This permit authorizes only wastewater, including stoma waters, discharges under the Missouri Clean Water Law and the National
Pollutant Discharge Elimination System, it does not apply to other regulated areas. This permit may be appealed in accordance
with Section 644.051.6 of the Law
June 13, 2008 June 23, 2008
Effective date Issue date
June 12, 2013
Expiration date
MO 780-1481 (7-941 DiJ7,clor of Staff, Clean water commission
Doyle Childers, Director, Department of Natural Resources
Executive Secretary, Clean Water Commission
t / A
'ZI111,1.,r.f Galbraith
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Permit No, MO-R040005
Table of Contents
1. Coverage Under this Permit
1.1 Permit Area
1.2 Eligibility
1.3 Limitations on Coverage
1.4 Obtaining Authorization
2. Application Requirements
2,1 Deadlines for Application
2.2 Additional designations afier the date of permit issuance
2.3 Submitting a [.ate application
3. Special Conditions
3.1 Discharges to Water Quality Impaired Water Bodies
3.2 Duty to Comply
3.3 Continuation of the Expired General Permit
3.4 Need to Halt or Reduce Activity Not a Defense
3.5 Permit Transfers
3,6 Procedures for Modification or Revocation
3.7 Requiring a Site -Specific or an Alternative General Permit
4. Storm Water Management Programs
4.1 Requirements
4.2 Minimum Control Measures
4.3 Sharing Responsibility
4.4 Reviewing and Updating Storm Water Management Programs
5. Monitoring, Recordkeeping and Reporting
5.1 Monitoring
5.2 Recordkeeping
5.3 Reporting
6. Standard Permit Conditions
7. Definitions
I. Coverage Under this Permit
1.1 Permit Area
1.2
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Permit No. MO-R040005
This permit covers all areas served by a municipal separate storm sewer system (MS4) for which the applicant is
identified as the continuing authority.
Eligibility
1.2.1 This permit authorizes discharges of storm water from regulated small MS4s, as defined in 10 CSR 20-6.200. The
permittee, or co-permittee, is authorized to discharge under the terms and conditions of this general permit if the
permittee:
1.2.1.1 Owns or operates a regulated small MS4 as defined in 10 CSR 20-6.200; located fully or partially within an
urbanized area as determined by the latest Decennial Census by the Bureau of Census or designated for permit
authorization by the department pursuant to 10 CSR 20-6.200; and
1.2.1.2 Submits a general permit application in accordance with Section 2 of this permit; and
1.2.1.3 Complies with the terms of this general permit.
1.2.2 The following are types of discharges authorized by this permit:
1.2.2.1 Storm water discharges. This permit authorizes storm water discharges to waters of the state from the regulated
small MS4s identified in Section 1.2.1, except as excluded in Section 1.3.
1.2.2.2 Nan -storm water discharges. The permittee is authorized to discharge the following non -storm water sources
provided that the permitting authority has not determined these sources to be substantial contributors of pollutants to
the permittee's MS4 that require a separate permit:
Landscape irrigation
Rising ground waters
Uncontaminated ground water infiltration (infiltration is defined as water other than wastewater that enters a
sewer system, including sewer service connections and foundation drains, from the ground through such means
as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished
from, inflow.)
Uncontaminated pumped ground water
Discharges from potable water sources
Foundation drains
Air conditioning condensate
Springs
Water from crawl space pumps
Footing drains
Lawn watering
Flows from riparian habitats and wetlands
Street wash water
Discharges or flows from emergency fire fighting activities
Individual residential car washing
Dechlorinated residential swimming pool discharges
1.3 Limitations on Coverage
This permit does not authorize:
1.3.1 Discharges that are nixed with sources of non -storm water unless such non -storm water discharges are:
1.3.1.1 In compliance with a separate NPDES permit; or
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Permit No. MO-R040005
1.3.1.2 Determined not to be a substantial contributor of pollutants to waters of the state.
1.3.2 Storm water discharges associated with industrial activities requiring separate NPDES permits as defined in 10 CSR
20-6.200.
1.3.3 Storrs water discharges associated with construction activities requiring separate NPDES permits as defined in 10
CSR 20-6,200.
1.3.4 Storm water discharges currently covered under another permit.
1.3.5 Discharges that are likely to jeopardize the continued existence of any species that are listed as endangered or
threatened under the Endangered Species Act (ESA) or result in the adverse modification or destruction of habitat
that is designated as critical under the ESA.
1.3.6 Discharges that violate the National Historic Preservation Act.
1.3.7 Discharges that cause or contribute to a violation of instream water quality standards. The permittee's storm water
management program and plan (SWMP) document must include a description of the best management practices
(BMPs) that the permittee will use to ensure that violations will not occur. The department may require corrective
action or an application for a site -specific permit or alternative general permit if an MS4 is determined to cause or
create a significant potential for causing an instream exceedance of water quality standards.
1.3.8 Discharges of any pollutant into any water for which a Total Maximum Daily Load (TMDL) has been either
established or approved by the EPA unless the permittee's discharge is consistent with that TMDL. This eligibility
condition applies at the time the permittee submits an application for coverage. If conditions change after the
permittee has permit coverage, the permittee may remain covered by the permit provided the permittee complies
with the applicable requirements of Section 3. The permittee shall incorporate any limitations, conditions and
requirements required by the TMDL, including monitoring frequency and reporting required, into the SWMP
document in order to be eligible for permit coverage. For discharges for which the permittee is responsible but are
not eligible for coverage under this permit, the pennittee shall apply for and receive a site -specific or other
applicable general NPDES permit prior to discharging.
1.4 Obtaining Authorization
1.4.1 To be authorized to discharge storm water from regulated small MS4s, the applicant/permittee shall submit an
application and a written description of the permittee's SWMP in accordance with the deadlines presented in Section
2 of this permit.
1.4.2 The permittee shall submit the information required in Section 2 on the latest version of the application form (or
photocopy thereof). The permittee's application shall be signed and dated by an authorized signatory.
1.4.3 Where the operator changes, or where a new operator is added after submittal of an application under Section 2, a
new application shall be submitted in accordance with Section 2 prior to the change or addition.
2. Application Requirements
2.1 Deadlines for Application
If the MS4 is regulated pursuant to 10 CSR 20-6.200 then the operator is required to seek coverage under the Small
MS4 General Permit or a site -specific MS4 permit as follows:
2.1.1 Existing small MS4 permittees shall submit renewal applications 180 days prior to permit expiration unless an
extended due date has been granted by the department. If the MS4 permittee is submitting a renewal application for
a revised general permit, they may submit the updated SWMP document separately from the application up to 90
days following public notice of the revised permit. If the MS4 is applying for a site -specific permit, the SWMP plan
must be included with the application; and
2. 1.2 MS4 operators that become subject to 10 CSR 20-6.200 following the 2010 census shall submit permit applications
within 180 days following census publication.
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Permit No. MO-R040005
2.2 Additional designations after the dale cif permit issuance
If the small MS4 is specially designated by the department after the date of permit issuance, then the small MS4 is
required to:
2.2.1 Submit application for a site -specific MS4 permit or a small general MS4 permit (whichever applies) and a written
description of the permittee's SWMP to the department within 180 days of notice.
2.3 Submitting a Late application
The permittee is not prohibited from submitting an application after the dates provided in Section 2.1. The
department reserves the right to take appropriate enforcement actions for any unpermitted discharges.
3. Special Conditions
3.1 Discharges to Water Ouality impaired Waters
3.1.1 If discharges from the MS4 are upstream from a 303(d) listed (impaired) waterbody, the permittee shall, in
consultation with the department:
3.1.1.1 Determine whether storm water discharges from any part of the MS4 significantly contribute pollutants directly or
indirectly to a 303(d) listed (i.e., impaired) waterbody. If the permittee has discharges meeting this criteria, the
permittee shall comply with Section 3.1.2. If the permittee does not, Section 3.1 does not apply to the permittee.
3.1.1.2 Determine whether a Total Maximum Daily Load (TMDL) has been developed and approved by EPA for the listed
waterbody. If there is such a TMDL, the permittee shall comply with both Sections 3.1.2 and 3.1.3. If no TMDL
has been finalized, Section 3.1.3 will apply when the TMDL is finalized and approved by EPA.
3.1.2 Water Quality Controls for Discharges to Impaired Waterhodies. The permittee's SWMP document required under
Section 4 shall include a description of how the permittee's program will control the discharge of measurable
pollutants of concern and ensure the permittee's discharges will not cause or contribute to instream exceedances of
the water quality standards. This discussion shall specifically identify measures and BMPs that will collectively
control the discharge of the pollutants of concern.
3.1.3
3.1.3.1
3.1.3.2
3.1.3.3
3.1.3.4
Consistency with TMDL Allocations. If a TMDL has been finalized and approved by EPA for any waterbody into
which the permittee discharges, the pennittee, shall:
Determine whether the approved TMDL is for a pollutant likely to be found in storm water discharges from the
pennittee's MS4;
Determine whether the TMDL includes a pollutant wasteload allocation (WLA) or other performance requirements
specifically for storm water discharge from the permittee's MS4;
Determine whether the TMDL addresses a flow regime likely to occur during periods of storm water discharge;
After the determinations above have been made and if it is found that the permittee's MS4 shall implement specific
WLA provisions of the TMDL, assess whether the WLAs are being met through implementation of existing storrn
water control measures or if additional control measures are necessary;
3.1.3.5 Document all control measures currently being implemented or planned to be implemented. The permittee shall also
include a schedule of implementation for all planned controls and shall document the calculations or other evidence
that shows that the WLA will be met;
3.1.3.6 Describe a monitoring program to determine whether the storm water controls are adequate to meet the WLA; and
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Permit No. MO-R040005
3.1.3.7 If the evaluation shows that additional or modified controls are necessary, describe the measures to be taken and the
schedule for their implementation. The permittee shall continue meeting the requirements of 3.1.3.4 through 3.1.3.7
for this permit duration until the department determines WLAs are being met or that water quality standards are
being met.
3.2
3.2.1
Duty to Comply
The permittee shall comply with all conditions of this permit. Any permit noncompliance constitutes a violation of
Missouri Clean Water Law and is grounds for enforcement action; permit termination, revocation and reissuance, or
modification; or for denial ofa permit renewal.
3.2.2 This permit authorizes only the activities described in this permit. Compliance with this permit may not be
considered a shield from compliance with any local ordinance, State Regulation or State Law.
3.3 Continuation of the Expired General Permit
3.3.1 If this permit is not reissued or replaced prior to the expiration date, it will be administratively continued in
accordance with 10 CSR 20-6.010 (10)(E) and remain in force and effect. Any permittee who was granted permit
coverage prior to the expiration date will automatically remain covered by the continued permit until the earlier of:
3.3.1.1 Reissuance or replacement of this permit, at which time the permittee shall comply with the application conditions
of the new permit to maintain authorization to discharge; or
3.3.1.2
3.3.1.3
3.3.1.4
Notice of Termination; or
Issuance ofa site -specific permit for your discharges; or
A permit decision by the Director not to reissue this general permit, at which time the permittee shall seek coverage
under an alternative general permit or a site -specific permit.
3.4 Need to Halt or Reduce Activity Not an Excuse
Actions by the permittee in an enforcement action to halt or reduce the permitted activity does not excuse
compliance with this permit or any provision of the Missouri Clean Water Law.
3.5 penult Transfers
This permit is not transferable to any other legal entity except after notice to the department. The department may
require modification or revocation and reissuance of the permit to change the name of the permittee and incorporate
such other requirements as may be necessary.
3.6 Procedures for Modification or Revocation
3.6.1 If at any time the Missouri Department of Natural Resources determines that the quality of waters of the state may
be better protected by requiring the owner/operator of the permitted site to apply for a site -specific permit, the
department may require any person to obtain a site -specific operating permit [10 CSR 20-6.010 (13) and 10 CSR 20-
6.200(5)].
3.6.2 The department may require the pennittee to apply for and obtain a site -specific or different general permit if:
3.6.2.1 The permittee is not in compliance with the conditions of this general permit; or
3.6.2.2. The discharge no longer qualifies for this general permit due to changed site conditions and regulations; or
3.6.2.3 Information becomes available that indicates water quality standards have been or may be violated.
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Permit No. MO-R040005
3.6.3 The permittee will be notified in writing of the need to apply for a site -specific permit or an alternative general
permit. When a site -specific permit or alternative general permit is issued to the authorized permittee, the
applicability of this general permit to the permittee will be terminated upon the effective date of the site -specific or
alternative general permit, whichever the case may be. The permittee shall submit the appropriate forms to the
department to terminate the permit that has been replaced.
3.7 Requiring a Site -Specific Permit or an Alternative General Permit
3.7.1 Decision by the department. The department may require any person authorized by this permit to apply for and/or
obtain either a site -specific NPDES permit or an alternative NPDES general permit [10 CSR 20-6.200(6)]. Any
interested person may petition the department to require a site -specific permit. Where the department requires the
permittee to apply for a site -specific NPDES permit, the department will notify the permittee in writing that a permit
application is required. This notification shall include a brief statement of the reasons for this decision, an
application form(s), a statement setting a deadline for the permittee to file the application, and a statement that on
the effective date of issuance or denial of the site -specific NPDES permit or the alternative general permit, coverage
under this general permit shall automatically terminate in accordance with Section 3.6. The department may grant
additional time to submit the application upon request of the applicant. lithe permittee fails to submit a site -specific
NPDES permit application in a timely manner as required by the department under this paragraph, then the
applicability of this permit to the permittee is automatically terminated on the day specified by the department for
application submittal.
3.7.2 Request by permitted. The permittee may apply for a site -specific permit in lieu of coverage under this general
permit. In such cases, the permittee shall submit an application for the alternate permit in accordance with the
requirements of 10 CSR 20-6,200, with reasons supporting the request. The request may be granted by issuance of
any site -specific pernuit or an alternative general permit.
4. Storm Water Management Programs and Plans
4.1 Requirements
4.1.1
4.1.2
4.1.3
4.1.4
4.1.4.1
4.1.4.2
The permittee shall develop, implement, and enforce a storm water management program and plan (SWMP)
designed to reduce the discharge of pollutants from the permittee's regulated small MS4 to the maximum extent
practicable, to protect water quality, and to satisfy the appropriate water quality requirements of the Missouri Clean
Water Law. The SWMP should include best management practices; control techniques and system, design, and
engineering methods; and such other provisions as the permitting authority determines appropriate for the control of
such pollutants. The permittee's SWMP document shall include the following information for each of the six
minimum control measures described in Section 4.2 of this permit:
A description of the best management practices (BMPs) that the permittee will implement for each of the storm
water minimum control measures;
The measurable goals for each of the BMPs including, as appropriate, the months and years in which the permittee
will undertake required actions, including interim milestones and the frequency of the action;
The person primarily responsible for the SWMP, and the person(s) responsible for each minimum control measure if
different from the primary responsible person; and
The permittee shall implement a program designed to protect water quality in potentially affected waters and ensure
that the permitted activities do not cause a violation of the Water Quality Standards:
Discharges to waters of the state shall not cause a violation of water quality standards rule under 10 CSR 20-7.031,
including both specific and general criteria; and
The following general water quality criteria shall be applicable to all waters of the state at all times including mixing
zones. No water contaminant, by itself or in combination with other substances, shall prevent the waters of the state
from meeting the following conditions:
4.1.4.2,1
4.1.4.2.2
4.1.4.2.3
4.1.4.2.4
4.1.4.2.5
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Permit No. MO-R040005
Waters shall be free from substances in sufficient amounts to cause the formation of putrescent, unsightly or harmful
bottom deposits or prevent full maintenance of beneficial uses;
Waters shall be free from oil, scum and floating debris in sufficient amounts to be unsightly or prevent full
maintenance of beneficial uses;
Waters shall be free from substances in sufficient amounts to cause unsightly color or turbidity, offensive odor or
prevent full maintenance of beneficial uses;
Waters shall be free from substances or conditions in sufficient amounts to result in toxicity to human, animal or
aquatic life;
There shall be no significant human health hazard from incidental contact with the water,
4.1.4.2.6 There shall be no acute toxicity to livestock or wildlife watering;
4.1.4.2.7 Waters shall be free from physical, chemical or hydrologic changes that would impair the natural biological
community; and
4.1.4.2.8 Waters shall be free from used tires, car bodies, appliances, demolition debris, used vehicles or equipment and solid
waste as defined in Missouri's Solid Waste Law, section 260.200, RSMo, except as the use of such materials is
specifically permitted pursuant to section 260.200-260.247.
4.1.5 For facilities under the control of the permittee good housekeeping practices shall be maintained to keep solid waste
from entry into waters of the state to the maximum extent practicable;
4.1.6 All fueling facilities under the control of the permittee shall adhere to applicable federal and state regulations
concerning underground storage, above ground storage, and dispensers, including spill prevention, control and
counter measures;
4.1.7 Substances regulated by federal law under the Resource Conservation and Recovery Act (RCRA) or the
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) that are transported, stored,
or used for maintenance, cleaning or repair by the permittee shall be managed according to the provisions of RCRA
and CERCLA;
4.1.8 All paint, solvents, petroleum products and petroleum waste products (except fuels) under the control of the
permittee shall be stored so that these materials are not exposed to storm water. Sufficient practices of spill
prevention, control, and/or management shall be provided to prevent any spills of these pollutants from entering a
water of the state. Any containment system used to implement this requirement shall be constructed of materials
compatible with the substances contained and shall also prevent the contamination of groundwater;
4.1,9 In addition to the requirements listed above, the permittee shall document the decision process for each minimum
control measure and include rationale statements for each BMP and measurable goal defined;
4.1,10 The permittee shall inspect any structures that function to prevent pollution of storm water or to remove pollutants
from storm water and the facility in general to ensure that all BMPs are continually implemented and effective, and
a monitoring schedule shall be specified in the SWMP document;
4.1.1 1 The SWMP document shall include interim milestones, measurable goals, an implementation schedule and measures
for success; and
4.1.12 The permittee shall develop and fully implement each minimum control measure within five (5) years of receipt of
its first MS4 permit. At each reissuance of this MS4 permit, the permittee shall comply with new or revised
standards as soon as practicable, but no later than 5 years from the date of reissuance.
4.2 Minimum Control Measures
The six (6) minimum control measures that shall be included in the perrnittee's SWMP document are:
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Permit No. MO-R040005
4.2.1 Public Education and Outreach on Storm Water impacts
4.2.1,1 Permit requirement. The permittee shall 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 steps the public can take to reduce pollutants in storm water runoff. As part of the SWMP, the public
education and outreach program shall include the following information, at a minimum:
4.2.1.1.1
4.2.1.1.2
4.2.1.1.3
4.2.1.1.4
4.2.1.1.5
4.2.1.1.6
The target pollutant sources the permttee's public education program is designed to address;
Identification of target audiences for the permittee's education program who are likely to have significant storm
water impacts (including commercial, industrial and institutional entities);
A plan to inform individuals and households about steps they can take to reduce storm water pollution;
A plan to inform individuals and groups on how to become involved in the SWMP (with activities such as local
stream and lake restoration activities);
The penmittee's outreach strategy, including the mechanisms (e.g., printed brochures, newspapers, media,
workshops, etc.) to reach target audiences, and how many people expected to be reached over the permit term; and
A plan to evaluate the success of this minimum control measure.
4.2.2 Public Involvement/Participation
4.2.2.1 Permit requirement. The permittee shall implement a public involvement/participation program that complies with
State and local public notice requirements, and involve the public in the development and oversight of the SWMP
policies and procedures. As part of the SWMP document, the public involvementiparticipation program shall
include the following information, at a minimum:
4.12.1.1 How the permittee has involved the public in the development and submittal of the application and SWMP
document;
4.2.2.1.2 The target audiences for the permittee's public involvement program, including a description of the types of ethnic
and economic groups engaged. The permittee is encouraged to actively involve all potentially affected stakeholder
groups, including commercial and industrial businesses, trade associations, environmental groups, homeowners
associations, and educational organizations, among others; and
4.2.2.1.3 The types of public involvement activities included in the permittee's program. Where appropriate, the permittee
must consider the following types of public involvement activities:
4.2.2.1.3.1 Citizen representatives on a storm water management panel;
4,2.2.1,3.2 Public hearings;
4.2.2.1.3.3 Working with citizen volunteers willing to educate others about the program; and
4.2.2. I.3.4 Volunteer monitoring or stream/lake clean-up activities.
4.2.2.1.4 The permittee's plan to actively involve the public in the development and implementation of their program; and
4.2.2.1.5 The method for evaluating success of this minimum control measure.
4.2.3 Illicit Discharge Detection and Elimination
4.2.3.1 Permit requirement. The permittee shall develop, implement and enforce a program to detect and eliminate illicit
discharges (as defined in 10 CSR 20-6.200) into the permittee's regulated small MS4. As part of the SWMP
document, the permittee's illicit discharge detection and elimination program shall include the development and
implementation of, at a minimum;
4.2.3.1.1
4.2.3.1.2
4.2.3.1.3
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Permit No, MO-R040005
A storm sewer map showing the location of all outfalls and the names and location of all receiving waters of the
state that receive discharges from those outfalls. The permittee shall describe the sources of information used for the
map(s), and how the permittee plans to verify the outfall locations with field surveys. If already completed, the
permittee shall describe how the map was developed and how the map will be regularly updated. The permittee shall
make the map information available to the department upon request;
To the extent allowable under State, or local law, effectively prohibit, through ordinance, or other regulatory
mechanism, non -storm water discharges into the permittee's storm sewer system and implement appropriate
enforcement procedures and actions. The pennittee shall identify the mechanism (ordinance or other regulatory
mechanism) the permittee will use to effectively prohibit illicit discharges into the MS4. If the permittee needs to
develop this mechanism, describe the permittee's plan and implementation schedule, If the permittee's ordinance or
regulatory mechanism is already developed, include a copy of the relevant sections with the permittee's program;
and
A plan and implementation schedule to detect and address non -storm water discharges, including discharges from
illegal dumping and spills, to the permittee's system. The permittee's plan shall include dry weather field screening
for non -storm water flows and field tests of selected chemical parameters as indicators of discharge sources. The
plan shall also address on -site sewage disposal systems that flow into the permittee's storm drainage system. The
permittee's description shall address the following, at a minimum:
4.2.3.1.3.1 Procedures for locating priority areas which include areas with higher likelihood of illicit connections (e.g., areas
with older sanitary sewer lines, for example) or ambient sampling to locate impacted reaches;
4.4.3.1.3.2 Procedures for tracing the source of an illicit discharge, including the specific techniques the permittee will use to
detect the location of the source;
4.2.3.1.3.3 Procedures for removing the source of the illicit discharge;
4.2,3.1.3.4
4.2.3.1.3.5
4.2.3.1.3.6
4.2.3.1.4
4.2.3.1.5
A plan to ensure through appropriate enforcement procedures, including fines, and actions that the permittee's illicit
discharge ordinance (or other regulatory mechanism) is implemented;
A plan to inform public employees, businesses, and the general public of hazards associated with illegal discharges
and improper disposal of waste. The permittee shall describe how this plan will coordinate with their public
education minimum measure and the pollution prevention/good housekeeping minimum measure programs; and
Procedures for program evaluation and assessment of this minimum control measure.
Address the following categories of non -storm water discharges or flows (i.e., illicit discharges) only if the permittee
identifies them as significant contributors of pollutants to the permittee's regulated small MS4: landscape irrigation,
rising ground waters, uncontaminated ground water infiltration (as defined in 10 CSR 20-6.200), uncontaminated
pumped ground water, discharges from potable water sources, foundation drains, air conditioning condensation,
springs, water from crawl space pumps, footing drains, lawn watering, flows from riparian habitats and wetlands,
and street wash water (discharges or flows from emergency fire fighting activities are excluded from the effective
prohibition against non -storm water and need only be addressed where they are significant sources of pollutants to
waters of the state).
The permittee may also develop a list of other similar occasional incidental non -storm water discharges (e.g. non-
commercial or charity car washes, etc.) that will not be addressed as illicit discharges. These non -storm water
discharges shall not be reasonably expected (based on information available to the permittees) to be significant
sources of pollutants to the MS4, because of either the nature of the discharges or conditions the permittee has
established for allowing these discharges to the permittee's MS4 (e.g., a charity car wash with appropriate controls
on frequency, proximity to sensitive waterbodies, BMPs on the wash water, etc.). The permittee shall document in
their SWMP any local controls or conditions placed on the discharges. The permittee shall include a provision
prohibiting any individual non -storm water discharge that is determined to be contributing significant amounts of
pollutants to the permittee's MS4.
4.2.3.1.6 The permittee should inventory, inspect and have enforcement authority for industries and commercial enterprises
within their boundary that may contribute pollutants via storm water to the MS4.
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Permit No. MO-R040005
4.2.4 Construction Site Storm Water Runoff Control
4.2.4.1 Permit requirement. The permittee shall develop, implement, and enforce a program to reduce pollutants in any
storm water runoff to their regulated small MS4 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 shall be included in the program if that construction activity is part of a larger common plan of
development or sale that would disturb one acre or more. As part of the SWMP, the permittee's construction site
stone water runoff control program shall include the development and implementation of, at a minimum:
4.2.4.1.1 An ordinance or other regulatory mechanism:
4.2.4.1. 1.1 To require operators to implement erosion and sediment control BMPs at construction sites;
4.2.4.1.1.2 To include sanctions to ensure compliance, to the extent allowable under State or local law; and
4.2.4.1.1.3 If the permittee needs to develop this mechanism, the perrnittee shall describe the plan and scheduled
implementation. If the permittee's ordinance or regulatory mechanism is already developed, the permittee shall
include a copy of the relevant sections with the permittee's SWMP.
4.2.4.1.2 Requirements for construction site operators to control construction -site waste that may cause adverse impacts to
water quality, such as discarded building materials, concrete truck washout, chemicals, litter, and sanitary waste;
4.2.4.1.3 Procedures for the permittee to consider and review all pre -construction site plans for potential water quality
impacts.
4.2.4. 1.4 Procedures for the permittee to receive and consider information submitted by the public, including coordination
with the permittee's public education program;
4.2.4.1.5 Procedures for the permittee to inspect sites and enforce control measures, including prioritization of site
inspections;
4.2.4.1.6 A plan to ensure compliance with the permittee's erosion and sediment control regulatory mechanism, including the
sanctions and enforcement mechanisms the permittee will use to ensure compliance and procedures for when certain
sanctions will be used. Possible sanctions include non -monetary penalties (such a stop work orders), fines, bonding
requirements, and/or permit denials for non-compliance; and
4.2.4.1.7
4.2.5
4.2.5.1
4.2.5.1.1
A description of how the permittee will evaluate the success of this minimum control measure.
Post -Construction Storm Water Management in New Development and Redevelopment
Permit requirement. The permittee shall develop, implement, and enforce a program to address the quality of long-
term storm water runoff from new development and redevelopment projects that disturb greater than or equal to one
acre, including projects less than one acre that are part of a larger common plan of development or sale, that
discharge into the pennittee's regulated small MS4. The permittee's program shall ensure that controls are in place
that have been designed and implemented to prevent or minimize water quality impacts by reasonably mimicking
pre -construction runoffconditions on all affected new development projects and by effectively utilizing water
quality strategies and technologies on all affected redevelopment projects, to the maximum extent practicable. The
permittee shall assess site characteristics at the beginning of the construction design phase to ensure adequate
planning for storm water program compliance. The purpose for this approach is to arrive at designs and practices
that provide for most effective water quality treatment through infiltration, flow rates and similar site -design
opportunities. As part of the SWMP document, the post -construction runoff control program shall include the
following information, at a minimum:
A strategy to minimize water quality impacts, by reasonably mimicking pre -construction runoff conditions in
affected new development and incorporating water quality protection in affected redevelopment projects to the
maximum extent practicable, and include a combination of structural andlor non-structural 1MPs appropriate for the
permittee's community;
4.2.5,1.2
4.2.5.1.3
4.2.5.1.4
4.2.5.1.5
4.2.5.1.5.1
4.2.5.1.5.2
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Permit No. MO-R040005
An ordinance or other regulatory mechanism to address post -construction runoff from new development and
redevelopment projects to the extent allowable under State, or local law. If the permittee needs to develop a
mechanism, the permittee shall describe the plan and a schedule for implementation. if the permittee's ordinance or
regulatory mechanism is already developed, the permittee shall include a copy of the relevant sections with the
SWMP document;
A plan to ensure adequate long-term operation and maintenance of selected BMPs, including types of agreements
between the penmittee and other parties such as the post -development landowners or regional authorities;
Specific priority areas for this program; and
Any non-structural BMPs in the permittee's program, including, as appropriate:
Policies and ordinances that provide requirements and standards to direct growth to identified areas, protect sensitive
areas such as wetlands and riparian areas, maintain and/or increase open space (including a dedicated funding source
for open space acquisition), provide buffers along sensitive water bodies, minimize impervious surfaces, and
minimize disturbance of soils and vegetation;
Policies or ordinances that encourage infill development in higher density urban areas, and areas with existing storm
sewer infrastructure, and redevelopment of Brownfield sites or grayfields which may include abandoned malls or
similar properties:
4.2.5,1.5.3 Education programs for developers and the public about project designs that minimize water quality impacts; and
4.2.5.1.5.4 Other measures such as minimization of the percentage of impervious area after development, use of measures to
minimize directly connected impervious areas, site designs that provide for integration of a variety of infiltration
practices and source control measures often thought of as good housekeeping, preventive maintenance and spill
prevention.
4.2.5.1.6 Any structural BMPs in the permittee's program, including, as appropriate:
4.2.5.1.6.1 Practices that provide infiltration, evapotranspiration or re -use such as grassed swales, bioretention cells, cisterns
and green roofs; and
4.2.5.1.6.2 Redevelopment practices such as planter boxes, street retrofits, parking -lot infiltration and green roofs.
4.2.5.1.7 How the permittee will evaluate the success of this minimum measure.
4.2.6 Pollution Prevention/Good Housekeeping for Municipal Operations
4.2.6.1 Permit requirement. The permittee shall 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, As part of the SWMP, the pollution prevention/good housekeeping program shall include the following
information, at a minimum:
4.2.6.1.1
A list of all municipal operations that are impacted by this operation and maintenance program. The permittee shall
also include a list of industrial facilities the permittee owns or operates that are subject to NPDES permits for
discharges of storm water associated with industrial activity that ultimately discharge to the permittee's MS4. The
permittee shall include the permit number or a copy of the industrial application form for each facility;
4.2.6.1,2 Maintenance BMPs, maintenance schedules, and long-term inspection procedures for controls to reduce floatables
and other pollutants to the permittee's regulated small MS4;
4.2.6.1.3 Controls for reducing or eliminating the discharge of pollutants from streets, roads, highways, municipal parking
lots, maintenance and storage yards, waste transfer stations, fleet or maintenance shops with outdoor storage areas,
and salt/sand storage locations and snow disposal areas the permittee operates;
4.2.6.1.4 Controls described in Sections 4.1.5 through 4.1.8 of this permit;
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Permit No. MO-R040005
4.2.6.1.5 Procedures for the proper disposal of waste removed from the permittee's MS4 and area of jurisdiction, including
dredged material, accumulated sediments, floatables, and other debris;
4.2.6,1.6 Procedures to ensure that new flood management projects are assessed for impacts on water quality and existing
projects are assessed for incorporation of additional water quality protection devices or practices;
4.2.6.1.7 A government employee training program to prevent and reduce storm water pollution from activities such as park
and open space maintenance, fleet and building maintenance, new construction and land disturbances, and storm
water system maintenance. The permittee shall describe any existing, available materials the permittee plans to use
such as those available from EPA, State or other organizations. The permittee shall describe how this training
program will be coordinated with the outreach programs developed for the public information minimum measure
and the illicit discharge minimum measure; and
4.2.6.1.8 How the permittee will evaluate the success of this minimum control measure.
4.3 Sharing Resnonsibilitv
Implementation of one or more of the minimum measures may be shared with another entity, or another entity
assume responsibility for the measure if:
4.3.1 The other entity, in fact, implements the control measure;
4.3.2 The particular control measure, or component of that measure, is at least as stringent as the corresponding permit
requirement; and
4.3.3 The other entity agrees to implement the control measure on permittee's behalf. Written acceptance of this
obligation is required. This obligation shall be maintained as part of the documented description of the pennittee's
stonn water management program. If the other entity agrees to report on the minimum measure, the permittee shall
supply the other entity with the reporting requirements contained in Section 5.3 of this permit. If the other entity
fails to implement the control measure on the permittee's behalf, then the permittee remains liable for any
discharges due to that failure to implement.
4.4
4.4.1
Reviewing and Updating Storm Water Management Programs and Plans
Storni Water Management Program and Written Plan (SWMP) Review: The permittee shall do an annual review of
the permittee's SWMP in conjunction with preparation of the annual report required under Section 5.3; and
4.4.2 SWMP Update: The permittee may change the SWMP during the life of the permit in accordance with the following
procedures:
4.4.2.1 Changes adding (but not subtracting or replacing) components, controls, or requirements to the SWMP may be made
at any time upon written notification to the department; and
4.4.2.2 Changes replacing an ineffective or unfeasible BMP specifically identified in the SWMP with an alternate BMP
may be requested at any time. Unless denied by the department, changes proposed in accordance with the criteria
below shall be deemed approved and may be implemented 60 days from submittal of the request. If request is
denied, the department will send the permittee a written response giving a reason for the decision. The permittee's
modification requests shall include the following:
4.4.2.2.1 An analysis of why the BMP is ineffective or infeasible (including cost prohibitive);
4.4.2.2.2 Expectations on the effectiveness of the replacement BMP; and
4.4.2.2.3 An analysis of why the replacement BMP is expected to achieve the goals of the BMP to be replaced.
4.4.2.3 Change requests or notifications must be made in writing and signed in accordance with Section 6.
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Permit No. MO-R040005
4.4.3 SWMP Updates Required by the Department: Changes requested by the department must be made in writing, set
forth the time schedule for the permittee to develop the changes, and offer the permittee the opportunity to propose
alternative program changes to meet the objective of the requested modification. All changes required by the
department will be made in accordance with 10 CSR 20-6.200. The department may require changes to the SWMP
as needed to:
4.4.3.1 Address impacts on receiving water quality caused or affected by discharges from the Municipal Separate Storm
Sewer System;
4.4.3.2 Include more stringent requirements necessary to comply with new federal or state statutory or regulatory
requirements; or
4.4.3.3 Include such other conditions deemed necessary by the department to comply with the goals and requirements of the
Missouri Clean Water Law.
4.4.4 Transfer of Ownership, Continuing Authority, or Responsibility far SWMP Implementation: The permittee shall
implement the SWMP on all new areas added to the permittee's portion of the municipal separate storm sewer
system (or for which the permittee becomes responsible for implementation of storm water quality controls) as
expeditiously as practicable, but not later than one year from addition of the new areas. Implementation may be
accomplished in a phased manner to allow additional time for controls that cannot be implemented immediately.
4.4.4.1 Within 90 days of a transfer of ownership, continuing authority, or responsibility for SWMP implementation, the
permittee shall submit a revised plan, if necessary, for implementing the revised SWMP on all affected areas. The
plan shall include revised schedules for implementation. Information on all new annexed areas and any resulting
updates required to the SWMP shall be included in the annual report.
4.4.4.2 Only those portions of the SWMP specifically required as permit conditions shall be subject to the modification
requirements of 10 CSR 20-6.200. Addition of components, controls, or requirements by the permittee(s) and
replacement of an ineffective or infeasible BMP implementing a required component of the SWMP with an alternate
BMP expected to achieve the goals of the original BMP shall be considered minor changes to the SWMP and not
modifications to the permit.
5. Monitoring, Recordkeeping, and Reporting
5,1 Monitoring
5.1.1 The permittee shall evaluate program compliance, the appropriateness of identified best management practices, and
progress toward achieving identified measurable goals. If the permittee discharges to a water for which a TMDL
has been approved, the permittee will likely have additional monitoring requirements under Section 3.1.3.6.
5.1.2 When the permittee conducts monitoring at the permittee's regulated small MS4, the permittee is required to comply
with the following:
5.1.2.1 Representative monitoring. Samples and measurements taken for the purpose of monitoring shall be representative
of the monitored activity;
5.1.2.2 Test Procedures. Monitoring shall be conducted according to test procedures approved under 10 CSR 20-
7.015(9)(A).
5.1.3 Records of monitoring information shall include:
5.1.3.1 The date, exact place, and time of sampling or measurements;
5.1.3.2 The names(s) of the individual(s) who performed the sampling or measurements;
5.1.3.3 The date(s) analyses were performed;
5.1.3.4 The names of the individuals who performed the analyses;
5.1.3.5
5.1.3.6
5.1.4
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Pettit No. MO-R040005
The analytical techniques or methods used; and
The results of such analyses.
Discharge Monitoring Report. TMDL monitoring results shall be reported to the department on a Discharge
Monitoring Report form (DMR). Monitoring results collected as part of the routine illicit discharge detection and
elimination program shall be documented, retained on site and made available upon request by EPA, DNR and the
public.
5,2 Recordkeeping
5.2.1 The permittee shall retain records of all activities requiring recordkeeping by the SWMP and monitoring
information, including, all calibration and maintenance records and all original strip chart recordings for continuous
monitoring instrumentation, copies of all reports required by this permit, copies of Discharge Monitoring Reports
(DMRs), a copy of the NPDES permit, a copy of all ordinances, policies and formal procedures for all six minimum
control measures and records of all data used to complete the application for this permit, for a period of at least three
years from the date of the sample, measurement, report or application, or for the term of this permit, whichever is
longer; and
5.2.2 The permittee shall submit the permittee's records to the department only when specifically asked to do so. The
permittee shall retain a written description of the SWMP required by this permit (including a copy of the permit
language) at a location accessible to the department. The permittee shall make the permittee's records, including the
application and the description of the SWMP, available to the public if requested to do so in writing.
5.3 Reporting
The permittee shall submit annual reports, using the annual report form provided by the department, to the Director
by July 28 of each year of the permit term. The report shall include:
5.3.1 The status of the permittee's compliance with permit conditions, an assessment of the appropriateness of the
identified best management practices, progress towards achieving the statutory goal of reducing the discharge of
pollutants to the MEP, and the measurable goals for each of the minimum control measures;
5.3.2
5.3.3
5.3.4
5.3.5
6.
7.
Results of information collected and analyzed, if any, during the reporting period, including monitoring data used to
assess the success of the program at reducing the discharge of pollutants to the MEP;
A summary of the storm water activities the permittee plans to undertake during the next reporting cycle (including
an implementation schedule);
Proposed changes to the permittee's SWMP, including changes to any BMPs or any identified measurable goals that
apply to the program elements; and
Notice that the permittee is relying on another government entity to satisfy some of the permittee's permit
obligations (if applicable).
Standard Permit Conditions
This permit includes Standard Permit Conditions attached as Part 1 to this permit.
Definitions
All definitions contained in 10 CSR 20-6.200 shall apply to this permit and are incorporated herein by reference. For
convenience, simplified explanations of some regulatory/statutory definitions have been provided, but
in the event of a conflict, the definition found in the regulation takes precedence.
Control Measure as used in this permit, refers to any Best Management Practice or other method used to prevent or
reduce the discharge of pollutants to waters of the United States.
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Permit No. MO-R040005
Director refers to the Director of Staff, Water Protection Program, Department of Natural Resources.
Discharge when used without a qualifier, refers to "discharge of a pollutant" as defined at 40 CFR 122.2.
Illicit Connection means any man-made conveyance connecting an illicit discharge directly to a municipal separate
storm sewer.
Illicit Discharge refers to any discharge to a municipal separate storm sewer that is not entirely composed of storm
water, except discharges authorized under an NPDES permit (other than the NPDES permit for discharges from the
MS4) and discharges resulting from emergency fire fighting activities.
Maximum Extent Practicable refers to the technology -based discharge standard for Municipal Separate Storm Sewer
Systems to reduce pollutants in storm water discharges that was established by CWA §402(p), A discussion of how
it applies to regulated small MS4s is found at 40 CFR 122.34.
MS4 is an acronym for "Municipal Separate Storm Sewer System" and is used to refer to either a Large, Medium, or
Small Municipal Separate Storm Sewer System (e.g. "the Springfield MS4"),
Pcrmittee, as used in this permit refers to the holder of this general permit.
Site -specific permit, also means individual permit.
Storm Water, means storm water runoff, snow melt runoff, and surface runoff and drainage.
Storm Water Management Program and Plan (SWMP) refers to a comprehensive documented program and plan to
manage the quality of storm water discharged from the municipal separate storm sewer system.