Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System › Chapter NR 216 - Storm Water Discharge Permits › Subchapter II - Industrial Storm Water Discharge Permits › Section NR 216.27 - Storm water pollution prevention plan

Current through June 24, 2024
(1) APPLICABILITY.
				  Any person who owns or operates an industrial activity with a storm water
				  discharge subject to the applicability requirements of s.
				  NR
				  216.21(2) that does not qualify for a
				  no exposure certification under s.
				  NR
				  216.21(3) shall prepare and implement
				  an SWPPP under this section.
(2)
				  INCORPORATION BY REFERENCE. When plans are developed or activities conducted in
				  accordance with other federal, state or local regulatory programs that meet the
				  requirements of this section, the plans may be incorporated into the SWPPP by
				  reference.
(3) PLAN REQUIREMENTS.
				  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.
(c) The SWPPP shall include a drainage base
				  map depicting all of the following:
1. How
				  storm water drains on, through and from the facility to groundwater, surface
				  water or wetlands.
2. The facility
				  property.
3. A depiction of the
				  storm drainage collection and disposal system including all surface and
				  subsurface conveyances.
4. Any
				  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.
6. The
				  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
				  and woods.
8. Existing structural
				  storm water controls.
9. The name
				  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:
					 https://dnr.wisconsin.gov/topic/SurfaceWater/ConditionLists.html
					 .
10. The location of
				  activities and materials that have the potential to contaminate storm
				  water.
(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.
(e) The SWPPP shall identify all potential
				  source areas of storm water contamination including:
1. Outdoor manufacturing areas.
2. Rooftops contaminated by industrial
				  activity.
3. Industrial plant
				  yards.
4. Storage and maintenance
				  areas for material handling equipment.
5. Immediate access roads and rail
				  lines.
6. Material handling sites
				  including storage, loading, unloading, transportation, or conveyance of any raw
				  material, finished product, intermediate product and by-product or waste
				  areas.
7. Storage areas for raw
				  materials, finished and intermediate products including tank farms.
8. Disposal or application of
				  wastewater.
9. Areas containing
				  residual pollutants from past industrial activity.
10. Areas of significant soil
				  erosion.
11. Refuse
				  sites.
12. Vehicle maintenance and
				  cleaning areas.
13. Washing areas
				  for equipment, vehicles, containers or other material.
14. Shipping and receiving areas.
15. Manufacturing buildings.
16. Residual treatment, storage and disposal
				  sites.
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.
(g) The SWPPP
				  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.
				  NR
				  216.28. 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.
(h)
				  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:
1.
				  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.
(i) The SWPPP shall maintain best management
				  practices necessary to maintain compliance with the performance standards in s.
				  NR
				  151.12 for those areas that are described in s.
				  NR
				  151.12(2).
(j) 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
				  storm water:
1. Any pollutant for which an
				  effluent limitation is contained in any WPDES permit issued to the facility by
				  the department.
2. Any pollutant
				  contained in a categorical effluent limitation or pre-treatment standard to
				  which the facility is subject.
3.
				  Any section 313 water priority chemical for which the facility has reporting
				  requirements and which has the potential for contaminating storm
				  water.
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
				  program.
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.
6. Any
				  pollutant identified as contributing to the impairment if the facility
				  discharges to an impaired water.
(k) 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.
(l) The SWPPP shall include provisions for
				  complying with the monitoring requirements specified in s.
				  NR
				  216.28. The SWPPP shall include a checklist of
				  inspections to be made during the annual facility site inspection described in
				  s.
				  NR
				  216.28(2). 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
				  testing.
(m) The SWPPP
				  shall include an implementation schedule that is consistent with the compliance
				  schedule in the general storm water discharge permit.
(n) The SWPPP shall be signed in accordance
				  with s.
				  NR
				  216.22(7) prior to submittal to the
				  department.