The SWPPP shall contain, at a minimum, the following items and provisions:
(a) The SWPPP shall identify by job title the
specific individual who has primary responsibility for all aspects of SWPPP
development and implementation and identify any other individuals concerned
with SWPPP development or implementation, and their respective roles. The
specific individual who has primary responsibility shall develop, evaluate,
maintain and revise the SWPPP; and carry out the specific management actions
identified in the SWPPP, including: maintenance practices, monitoring
activities, preparing and submitting reports and serving as facility contact
for the department.
(b) The SWPPP
shall contain a short summary of the major activities conducted at various
locations throughout the facility.
The SWPPP shall include a drainage base
map depicting all of the following:
storm water drains on, through and from the facility to groundwater, surface
water or wetlands.
2. The facility
3. A depiction of the
storm drainage collection and disposal system including all surface and
secondary containment structures.
5. The location of all outfalls that
discharge channelized flow to surface water, ground water or wetlands,
including outfalls recognized as permitted outfalls under another WPDES permit,
numbered for reference.
drainage area boundary for each outfall.
7. The surface area in acres draining to each
outfall, including the percentage that is impervious such as paved, roofed or
highly compacted soil, and the percentage that is pervious such as grassy areas
8. Existing structural
storm water controls.
and location of receiving waters. Also identify receiving waters, including
downstream waters, that are designated as ERW, ORW, or impaired waters.
Note: A list of outstanding resource waters
and exceptional resource waters may be found on the department website at:
https://dnr.wisconsin.gov/topic/SurfaceWater/orwerw.html. A list of Wisconsin
impaired waterbodies is updated every two years and may be found on the
department website at:
10. The location of
activities and materials that have the potential to contaminate storm
(d) The SWPPP
shall summarize any results of available storm water sampling data or other
observations that characterize the quality of storm water discharges or
identifying sources of storm water contamination. Available data that
characterizes the quality of storm drainage discharges under dry weather flow
conditions shall also be included, except when the data has been or will be
reported to the department under another WPDES permit.
The SWPPP shall identify all potential
source areas of storm water contamination including:
1. Outdoor manufacturing areas.
2. Rooftops contaminated by industrial
3. Industrial plant
4. Storage and maintenance
areas for material handling equipment.
5. Immediate access roads and rail
6. Material handling sites
including storage, loading, unloading, transportation, or conveyance of any raw
material, finished product, intermediate product and by-product or waste
7. Storage areas for raw
materials, finished and intermediate products including tank farms.
8. Disposal or application of
9. Areas containing
residual pollutants from past industrial activity.
10. Areas of significant soil
12. Vehicle maintenance and
13. Washing areas
for equipment, vehicles, containers or other material.
14. Shipping and receiving areas.
15. Manufacturing buildings.
16. Residual treatment, storage and disposal
17. Any other areas capable
of contaminating storm water runoff.
(f) Specific pollutants likely to be present
in storm water as a result of contact with source areas identified in par. (e)
shall also be listed.
shall identify all contaminated and uncontaminated sources of non-storm water
discharges to the storm sewer system and indicate which are covered by WPDES
permits. The SWPPP shall contain the results of the non-storm water discharge
monitoring required by s.
. If monitoring is not feasible due to the lack
of suitable access to an appropriate monitoring location, the SWPPP shall
include a statement that the monitoring could not be conducted and an
explanation of the reasons why.
The SWPPP shall rely to the maximum extent practicable, and to the extent it is
cost effective, on the use of source area control best management practices
that are designed to prevent storm water from becoming contaminated at the
site. Source area control best management practices that are either proposed or
in place at the facility shall be indicated on the facility drainage base map.
The SWPPP shall provide for the use of the following applicable source area
control best management practices:
Practices to control significant soil erosion.
2. Good housekeeping measures, preventive
maintenance measures, visual inspections, spill prevention and response
measures and employee training and awareness.
3. Covering or enclosing salt storage piles
so that neither precipitation nor storm water runoff can come into contact with
the stored salt; or, for facilities that use brine and have salt storage piles
on impervious curbed surfaces, a means of diverting contaminated storm water to
a brine treatment system for process use.
4. Use of a combination of precipitation
control, containment, drainage controls or diversions to control section 313
water priority chemicals potentially discharged through the action of storm
water runoff, leaching or wind.
The SWPPP shall maintain best management
practices necessary to maintain compliance with the performance standards in s.
for those areas that are described in s.
The SWPPP shall identify pollutants that
are likely to contaminate storm water discharges to waters of the state
following implementation of source area control best management practices. Past
sampling data collected at the facility or at sufficiently similar outfalls at
other facilities may be used in making this determination. At a minimum, all of
the following pollutants shall be considered for their potential to contaminate
1. Any pollutant for which an
effluent limitation is contained in any WPDES permit issued to the facility by
2. Any pollutant
contained in a categorical effluent limitation or pre-treatment standard to
which the facility is subject.
Any section 313 water priority chemical for which the facility has reporting
requirements and which has the potential for contaminating storm
4. Any other toxic or
hazardous pollutants from present or past activity at the site that remain in
contact with precipitation or storm water and which could be discharged to the
waters of the state and which are not regulated by another environmental
5. Any of the following
parameters that might be present in significant concentrations: oil and grease;
acids or bases; total suspended solids; 5-day biological oxygen demand;
chemical oxygen demand.
pollutant identified as contributing to the impairment if the facility
discharges to an impaired water.
When source area control best management
practices are not feasible, not cost effective or are inadequate to control
storm water pollution, or when the department determines source area control
best management practices are inadequate to achieve a water quality standard,
the SWPPP shall prescribe appropriate storm water treatment practices as needed
to reduce the pollutants in contaminated storm water prior to discharge to
waters of the state. Proposed or existing storm water treatment practices shall
be shown on the facility drainage basin map. The SWPPP shall provide for the
following types of storm water treatment practices:
1. Storm water significantly contaminated
with petroleum products shall be treated for oil and grease removal by an
adequately sized, designed and functioning wastewater treatment device.
Coverage under an individual or general WPDES permit is required for discharges
of storm water from oil/water treatment devices.
2. Point source discharges of storm water
contaminated by significant amounts of sediment from eroding areas, including
bare earth industrial lots and ongoing industrial processes, shall be treated
by filtration or settling type practices.
The SWPPP shall include provisions for
complying with the monitoring requirements specified in s.
. The SWPPP shall include a checklist of
inspections to be made during the annual facility site inspection described in
. The SWPPP shall also
identify for each outfall the type of monitoring that will be conducted, such
as non-storm water discharge monitoring; storm water discharge quality
inspections; or chemical pollutant monitoring for facilities covered under a
tier 1 permit. The following are requirements for facilities covered under a
tier 1 permit:
1. A list of chemical
parameters proposed for testing at each outfall shall be included along with
the analytic sample testing procedures from ch. NR 219 that will be used to
determine pollutant concentrations.
2. The list of chemical parameters shall
include each of the residual pollutants identified in par. (j), or an
explanation of why the pollutant should not be included in the chemical
(m) The SWPPP
shall include an implementation schedule that is consistent with the compliance
schedule in the general storm water discharge permit.
The SWPPP shall be signed in accordance
prior to submittal to the
AMENDMENT. A permittee shall amend an SWPPP if any of the following
(a) When expansion,
production increases, process modifications, changes in material handling or
storage or other activities are planned which will result in significant
increases in the exposure of pollutants to storm water discharged either to
waters of the state or to storm water treatment devices. The amendment shall
contain a description of the new activities that contribute to the increased
pollutant loading, planned source control activities that will be used to
control pollutant loads, an estimate of the new or increased discharge of
pollutants following treatment and, when appropriate, a description of the
effect of the new or increased discharge on existing storm water treatment
(b) The facility finds
through its comprehensive annual facility site compliance inspection, quarterly
visual inspection of storm water quality, annual chemical storm water sampling
or other means that the provisions of the SWPPP are ineffective in controlling
storm water pollutants discharged to waters of the state.
(c) Upon written notice that the department
finds the SWPPP to be ineffective in achieving the conditions of the storm
water discharge permit applicable to the facility.