F 

WYPDES Storm
Water Program

Bill DiRienzo, Program Manager
307-777-7081
bill.dirienzo@wyo.gov


Primary contacts:

 

Barb Sahl, Program Coordinator
307-777-7570
barb.sahl@wyo.gov

Kevin Wells, Inspection/Compliance Supervisor
307-777-
8669

kevin.wells@wyo.gov

John Gorman,
Permit Writer
307-777-5622

john.gorman@wyo.gov

 

Storm Water Quick Links

Large Construction General Permit - disturbances of 5 or more acres.
Small construction permit
- disturbance of at least 1 acre, but less than 5 acres.
Non-storm water permits for construction - other common Water Quality Division permits (not a complete list)
Mineral mining permit
Industrial permit
Municipal separate storm sewer systems (MS4s) permit

Storm water guidance documents 
Other storm water links
Wyoming Water Quality Rules and Regulations

 

Active Storm Water Authorizations (Excel files)

Authorizations Under the Large Construction General Permit (5 or more acres) - updated bimonthly (last updated:  9/3/14)

Authorizations Under the Industrial General Permit - updated quarterly (last updated:  7/1/14)

Authorizations Under the Mineral Mining General Permit - updated quarterly (last updated:  7/1/14)

Authorizations Under the Municipal Separate Storm Sewer System (MS4) Permit - updated as needed (last updated 12/30/09)

If issues are noted regarding the posted data, please contact Barb Sahl, 307-777-7570 or John Gorman, 307-777-5622.

 

Storm Water Program News (Last Updated 7/1/2014)

****  The WYPDES Program is working on a new electronic, online NOI for general permits.  Expected deployment is late summer/early fall of 2014.  More information will be posted as it is available.  (7/1/14)

****  All NOIs have been revised to allow project operators to renew existing coverage in cases where an early expiration date was selected, but the project does not meet the necessary conditions to end coverage early.  To renew these authorizations please check the appropriate box, provide the facility's current authorization number (WYRxxxxxx) and a check for the appropriate fee amount. (12/17/13)

 

Storm Water Permits and Forms

Permit FeesBeginning July 1, 2013 payment of permit fees for individual permits and general permit authorizations are required to be submitted with the permit application or NOI form.  All storm water authorizations have variable fees that must be calculated depending upon the NOI date.  The "Fee Calculator" should be used to determine the proper amount to be submitted with each NOI.  Checks should be made out to the "Dept. of Environmental Quality, Water Quality Division.

Large Construction General Permit (WYR10-0000)
Land disturbance of 5 acres or more

Construction projects that disturb five or more acres must be covered under the general construction permit. The five acres of disturbance does not have to be contiguous.
List of Consultants (2/08)

Wyoming Sage-Grouse Management:  Pursuant to the requirements of the Governor's Executive Order 2011-5, Greater Sage-Grouse Core Area Protection, the Wyoming Department of Environmental Quality (WDEQ) is working with the Wyoming Game and Fish Department (WGFD) to minimize the impact of development on the Greater Sage-Grouse population in Wyoming. To that end, operators of large construction projects must determine if any part of the project falls within a Greater Sage-Grouse Core Area (SGCA) before applying for coverage under the Large Construction General Permit (LCGP).  If any part of your project falls within a SGCA, the first point of contact for addressing sage-grouse issues is the WGFD.  Coordinate with the WGFD and obtain a letter confirming consistency with the Executive Order prior to applying for coverage under the LCGP. (8/11)

Map of Greater Sage-Grouse Core Areas (SGCAs).  This is the same map that is found on the Wyoming Game and Fish Department's Sagebrush/Sage Grouse Management webpage.  The map has a "zoom" tool that you can use to zoom to the township and range or to the relevant USGS quadrangle map where your project is located. (5/12)

Additional information can be found on the Wyoming Game and Fish Department's Sage-Grouse Management webpage.

 

Documents (last updated):

Formats

Construction General Permit, effective May 9, 2011. (including SWPPP guidelines in Part 8) (5/11)

 

SWPPP Template. This SWPPP template is a "fillable" PDF form.  You may complete it online and print it for signature.  Use of this template is optional and it is provided only for the convenience of the user.  It is an applicant's responsibility to ensure that their SWPPP meets the requirements of the LCGP.  If any glitches or issues are found with this form, please contact Barb Sahl or John Gorman. (5/11)

 

Response to comments document.  This document summarizes the comments received on the draft large construction general permit and provides the WDEQ response to each. (5/11)

 

Permit Fact Sheet (05/09/2011)

 

Notice of Intent (NOI) to request coverage under the general construction storm water permit. (10/13)

Permit Fee:  Varied (see Fee Calculator to detemine appropriate fee amount)

Occasionally we have gotten reports of a PDF/A error message when trying to use this form with Adobe Pro or Adobe Standard.  The linked work around has been provided by NOI users.

The NOI has been revised to comply W.S. 35-11-312 which now requires upfront payment of permit fees..  More information on the change is provided above. (6/19/13)
This new NOI replaces all previous NOIs (previous versions will no longer be accepted).  After June 30, 2013 older versions of the NOI will not be accepted.  At this time the WDEQ must have an original signature so NOIs must be mailed or hand delivered.

NOTE:  Please be sure to complete item 3 of the NOI regarding the status of your project with respect to Sage Grouse Core Areas.


























Notice of Transfer and Acceptance (NOTA) to transfer permit coverage to a new operator. (8/06)

Notice of Termination (NOT) to discontinue coverage under the general permit. The construction site must be "finally stabilized" as defined in Part 5 of the permit. (8/06)

Interactive map showing water bodies in Wyoming that are listed on the state's 303(d) list as impaired due to, or that have an approved Total Maximum Daily Load (TMDL) for, sediment, suspended solids or turbidity.  Please see parts 3.5.11 and 8.2.2.8 in the permit for additional information.  [Note that this map does not include impairment or TMDL information for areas of the Wind River Indian Reservation where the state does not have jurisdiction and EPA is the permitting authority.]  (5/22/13)

Also shown for convenience are the state's class 1 waters as defined in Chapter 1 of the Wyoming Water Quality Rules and Regulations.

This map works best with a high-speed internet connection.  If you have difficulty with the map, please contact Barb Sahl or John Gorman.

   

2-year/24-hour storm event isopluvial map of Wyoming.  Storm water BMPs are required to withstand and function in storm events up to a 2-yr/24-hr storm.  This map provides storm depths in tenths of an inch.  Equivalent data from local municipalities may also be used. (9/06)

 

New Homeowner Guidance./  Guidance for home buyers of new construction.  Provides guidance to erosion and sedimentation from unlandscaped lots and basic erosion and sediment controls.

 

"Does Your Construction Site Need a Permit?Under revision (5/11)

   

Wyoming map showing:
    *  Surface waters (listed on the state's 303(d) list) as impaired due to sediment, total suspended solids or turbidity
    *  Surface waters with an approved TMDL for sediment, total suspended solids or turbidity
    *  Class 1 waters

This map is a self-extracting zipped PDF file.  Click on the icon and follow the directions to save the map to your computer.  The zipped map is still over 9 MB.  If you have difficulty downloading the map, please contact the storm water program.

The Division is developing an interactive GIS map that will replace the PDF map.  Please check back periodically for that updated map. (6/11)

 

 

How does enactment of the federal Energy Policy Act of 2005 (the “Energy Bill”) affect storm water permitting for oil and gas-related construction activities in Wyoming?


In Wyoming, where the Department of Environmental Quality is the permitting authority, Chapter 2, Section 6 of the Wyoming Water Quality Rules and Regulations requires permit coverage for storm water discharges from all construction activities disturbing one or more acres.  The type of facility being constructed does not change the requirement to obtain permit coverage.  As such, construction of oil and gas facilities still requires storm water permit coverage in the state of Wyoming.

However, passage of the Energy Bill does affect storm water permitting for the oil and gas industry in areas of the Wind River Indian Reservation where the state does not have jurisdiction and EPA is the permitting authority.  For more information contact Amy Clark at EPA Region 8 (303-312-6314).

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Small Construction General Permit   (WYR10-A000)
Land disturbance of at least 1 acre, but less than 5 acres

Small construction activities, those disturbing at least one acre, but less than five acres, now require coverage under a small construction general permit.  The WDEQ has issued a general permit for small construction activities.
List of Consultants (2/08)

Documents (last updated) Format

Small construction general permit
This general permit became effective 7/8/13 and expires 3/15/16.  (7/13)

No Permit Fee

SWPPP Template. This SWPPP template is a "fillable" PDF form.  You may complete it online and print it for signature.  Use of this template is optional and it is provided only for the convenience of the user.  It is an applicant's responsibility to ensure that their SWPPP meets the requirements of the SCGP.  If any glitches or issues are found with this form, please contact Barb Sahl or John Gorman. (7/13)

Erosivity Waiver Certification - Parts A and B
The erosivity waiver is only available for certain construction projects that will disturb between 1 and 5 acres.(2/08)

Fact Sheet for the 2013 general permit (7/13)

EPA Fact Sheet 3.1 -- Construction Rainfall Erosivity Waiver.  Use this fact sheet if you are applying for the Erosivity Waiver in Appendix B of the small construction general permit.  NOTE:  Wyoming counties on the Isoerodent Map of the Western US (Figure 3) in fact sheet 3.1 do not show up well.  This version of the isoerodent map, from a USDA publication (RUSLE, chpt. 2), shows the counties a little better.  If you're having trouble locating your project you may want to try using this map. (1/04)

Please note:  Unlike other Wyoming WYPDES storm water permits, the small construction general permit does not require (or even have) a Notice of Intent or application.  A construction site is considered authorized under the permit when all applicable provisions of the permit (for example: develop and implement a SWPPP and conduct and document required periodic inspections of BMPs) are completed and implemented by the construction site operator.  In other respects this permit is very similar to the permit for large construction activities.

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Non-storm water permits needed for
some construction projects.
This is only a list of more commonly needed non-storm water permits from the Water Quality Division.  Contact the Water Quality Division if you're not sure about what permits may be needed.
Other local, state or federal permits may be required.  Be sure to verify whether or not other permits are needed.


Construction Site Dewatering

Please note that both the WYPDES large and small construction storm water permits now cover discharges from construction dewatering if those discharges are accumulated storm water with only minor amounts of groundwater (see Part 7.13 of the large and small construction permits for more details).  Discharges that have a significant groundwater component and that are pumped or siphoned to a storm drain or may reach a surface water of the state, directly or by overland flow, are considered a process wastewater and must be covered under a separate WYPDES permit for wastewater discharges.
  1. Most short-term construction dewatering discharges to storm drains or surface waters may be covered under a general permit specifically written for short-term, temporary discharges (scroll down to "General Permits and NOIs").  Contact Marcia Porter, 307-777-6081, for more information on permitting temporary discharges.

  2. If you will be "land applying" construction site water to the land surface so that it will not run off to surface waters, contact your local District Engineer with the Water and Wastewater group to determine if a "Land Application" permit is required.

Both a WYPDES Temporary Discharge permit and a Land Application permit will take some time to obtain.  If you think you may need to dewater your site consider getting one of these permits early to avoid delays in your project. (8/05) (revised 12/06)


Temporary Turbidity Waivers
May be required for certain construction activities conducted in live waters

The Administrator of the Water Quality Division may authorize temporary increases in turbidity above the numeric criteria (described in Section 23, Chapter 1 of the Wyoming Water Quality Rules and Regulations) for certain short-term, construction-related activities.

If a project requires working in live waters and activities may cause an excursion above allowable turbidity levels, your project may qualify for a turbidity waiver.  This waiver is time-limited and project-specific.  To apply for a waiver use the application linked below.  Contact Cathy Norris, 307-777-6372, for more information.

Projects that cause excursions above the numeric criteria and that have not been authorized by a waiver are subject to a possible enforcement action.

Application for a Turbidity Waiver
Directions to Apply

 

Mineral Mining and Associated Activities (WYR32-0000)

Mineral mining and processing (SIC 14) and associated activities, such as mobile hot plants, concrete batch plants and stockpiles are covered by the mineral mining storm water permit. Non-mineral mining activities and fuels, such as coal, should use the general industrial storm water permit.

Please note that the general mineral mining storm water permit is not available to facilities where storm water runoff has the potential to discharge to class 1 waters. Facilities may apply for coverage under an individual storm water permit. Contact Barb Sahl at 307-777-7570 or John Gorman at 307-777-5622 for more information

Documents (last updated):

Formats

Mineral Mining General Permit (including SWPPP guidelines in Part 7) (3/12)

 

Fact Sheet (8/12)

 

Wyoming class 1 waters

 

Notice of Intent (NOI) to request coverage under the mineral mining general storm water permit. (revised 12/13)

Permit Fee:  Varied (see Fee Calculator to detemine appropriate fee amount)

This new NOI replaces all previous NOIs (previous versions will no longer be accepted).  It is a "fillable" PDF form that may be completed online and printed for signature and mailing.  At this time the WDEQ must have an original signature so NOIs must be mailed or hand delivered.

Occasionally we have gotten reports of a PDF/A error message when trying to use similar forms with Adobe Pro or Adobe Standard.  The linked work around has been provided by NOI users.

 

Notice of Transfer and Acceptance (NOTA) to transfer permit coverage to a new operator. (8/07)

Notice of Termination (NOT) to discontinue coverage under the general permit. (8/07)

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General Industrial Storm Water Permit (WYR00-0000)

Certain industrial facilities are required to seek coverage under the general industrial storm water permit. Facilities most commonly covered in Wyoming are most mines (mineral mines are covered under the mineral mining permit, see above), facilities that produce cement products, many wood product facilities, airports, junk yards, and scrap recycling facilities. Coverage is based on the facility's Standard Industrial Classification (SIC) code.

Please note that the general industrial storm water permit is not available to facilities where storm water runoff has the potential to discharge to class 1 waters. Facilities may apply for coverage under an individual storm water permit. Contact Barb Sahl at 307-777-7570 or John Gorman at 307-777-5622 for more information.

Documents (last updated) Formats

Industrial General Permit (including SWPPP guidelines in Part 8) (10/12)

 

SWPPP Template. This SWPPP template is a "fillable" PDF form.  You may complete it online and print it for signature.  Use of this template is optional and it is provided only for the convenience of the user.  It is an applicant's responsibility to ensure that their SWPPP meets the requirements of the IGP.  If any glitches or issues are found with this form, please contact Barb Sahl or John Gorman. (9/13)

 

Fact Sheet (10/012)

 

Response to Comments received (10/12)

 

Table of regulated SICs

 

Wyoming class 1 waters

 

Notice of Intent (NOI) to request coverage under the industrial general storm water permit. (revised 12/13)

Permit Fee:  Varied (see Fee Calculator to detemine appropriate fee amount)

This new NOI replaces all previous NOIs (previous versions will no longer be accepted).  It is a "fillable" PDF form that may be completed online and printed for signature and mailing.  At this time the WDEQ must have an original signature so NOIs must be mailed or hand delivered.

Occasionally we have gotten reports of a PDF/A error message when trying to use similar forms with Adobe Pro or Adobe Standard.  The linked work around has been provided by NOI users.

Outfall characterization table.  This table is only for facilities subject to federal effluent limits and covered under the general permit:  cement manufacturing, asphalt emulsion manufacture and coal pile runoff.  (5/12)





















 

Notice of Transfer and Acceptance (NOTA) to transfer permit coverage to a new operator. (10/07)

Notice of Termination (NOT) to discontinue coverage under the general permit. (10/07)

No Exposure Certification.  The No Exposure Certification may be used by any industrial facility, regulated under the storm water program, where industrial materials and activities are sheltered from storm water.  Submission of a No Exposure Certification constitutes notice to WDEQ that the facility does not require coverage under the industrial storm water general permit.  The certification is renewable every five years and is verifiable by WDEQ.

  1. No Exposure Certification guidance and certification. (9/05)

  2. No Exposure Change of Status form.  Use this form to assign the No Exposure Certification to a new operator, indicate a change in business activity on the site or provide information on the closure of the site. 5/09




















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Municipal Separate Storm Sewer Systems (MS4s)

Recent federal regulations require that storm water discharges from certain small MS4s be covered under a storm water permit.  At this time in Wyoming municipal, county, and other publicly-operated MS4s within the state's two Census Bureau-defined urbanized areas (see maps below) will be required to be covered under a general storm water permit.

New MS4 Guidance
State of Wyoming Phase 2 Municipal Guidance:  A Guide to Requirements and Program Development for Coverage Under Wyoming's Phase 2 Municipal Storm Water Discharge Permit (May 2010)

Casper Urbanized Area Map
Cheyenne Urbanized Area Map

The Wyoming MS4 permit was issued 2/1/05.

  1. MS4 Permit (11/08)

  2. Notice of Intent (NOI) to request coverage under the general permit (pdf) (Word Perfect) (2/05)
    Permit Fee:  Varied (see Fee Calculator to detemine appropriate fee amount)

  3. Fact Sheet (11/08)

    Response to Comments Received (11/08)

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Storm Water Guidance Documents

Storm Water Consultants List.  The linked list represents consultants who have indicated that they are are available for hire by the public to provide services relating to compliance with the Wyoming Large and Small Construction General Permits and who have requested to be on this list.  The Wyoming Department of Environmental Quality does not certify or recommend any consultants.  (List updated to September 4, 2014)

You may wish to contact more than one consultant to obtain a comparison of cost, qualifications and services.  Additionally, you may also wish to consult other sources of information such as telephone/business listings, internet search engines, etc.

If your company would like to be included on this list please send a letter or e-mail with contact information to Barb Sahl at DEQ/WQD, 122 West 25th Street, 4-W, Cheyenne, WY  82002 (barb.sahl@wyo.gov).  (2/08)

These Power Point Presentations are from the February 20, 2013 Storm Water Refresher Training in Casper.  All four presentations are posted as PDF format.  If anyone would like the original Power Point format to incorporate into their own presentations please contact Barb Sahl. (2/13)

o
  Construction General Permit
o  Mineral Mining General Permit
o  Industrial General Permit
o  eDMR

The Minnesota Pollution Control Agency has produced two informative videos describing how to collect storm water samples from either sheet flow or as grab samples from concentrated flow.  If you have questions on sampling storm water please view these videos.  (2/12)
-Collecting grab samples
-Collecting samples from sheet flow

State of Wyoming Phase 2 Municipal Guidance:  A Guide to Requirements and Program Development for Coverage Under Wyoming's Phase 2 Municipal Storm Water Discharge Permit (May 2010)

Guidance for benchmark sampling and reporting under the Industrial General Permit (May 2010)

Reclamation Techniques for Northeast Wyoming.  This is a basic and easy-to-follow guide produced by the DEQ Land Quality Division for successful reclamation in northeast Wyoming.  (6/07)

Reclamation Techniques for Southwest Wyoming High Desert Sites.  This is a basic and easy-to-follow guide produced by the DEQ Land Quality Division for successful reclamation in southwest Wyoming.  (6/07)

WYPDES Storm Water Permits and the Oil and Gas Industry Including Coalbed Methane (10/06)

Permitting Requirements of the WYPDES Storm Water Program for Exploring by Drilling or by Dozing.  This document is applicable for individuals or organizations seeking coverage under a Land Quality Division permit to Explore by Drilling or Dozing.  This document is out of date.  It will be revised and reposted in the future - 8/31/11.

Storm Water Permits and the Ready-Mixed Concrete Industry:  An Operator's Guide to the Wyoming Storm Water Permit Program (2/06)

New Homeowner Guidance.  Guidance for home buyers of new construction.  Provides guidance to erosion and sedimentation from unlandscaped lots and basic erosion and sediment controls.

"Does Your Construction Site Need a Permit?"  To be revised

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Storm Water Links

These links are provided to guide users to information that may be useful to their program.  Please report any broken links or suggestions for new links to Barb Sahl at barb.sahl@wyo.gov.

Best Management Practices (BMPs)

City of Casper Storm Water Web Page The City of Casper has put together a web page with many resources for homeowners to contractors.  (12/07)

Stormwater Control:  Implementing Construction Site BMPs.  This Montana State University website offers many resources to assist contractors in developing and implementing storm water BMPs.  (12/06)

A Guide to Temporary Erosion-Control Measures for Contractors, Designers and Inspectors:  The state of North Dakota has produced this excellent and straightforward guidebook for temporary erosion controls on construction sites. (6/05)

Erosion and Sediment Control Best Management Practices for the City of Casper Wyoming.  Casper has published this manual for contractors working in Casper.  In addition to recommended BMPs the manual has information City ordinances addressing erosion control. (9/05)

This EPA site has fact sheets for many BMPs. They may be appropriate for construction, industrial, or municipal applications.

EPA's National Menu of Stormwater Best Management Practices is also a good source of information on BMPs.

National Stormwater Best Management Practices (BMP) Database - This database provides monitoring results measuring the effectiveness of structural and non-structural BMPs used around the country.  http://www.bmpdatabase.org/

Protecting Water Quality in Urban Areas - This document from the Minnesota Pollution Control Agency has a wealth of information on protecting surface waters in urban areas.

Phase II

Phase II fact sheets from EPA covering phase II changes in municipal, construction, industrial storm water regulations
http://cfpub.epa.gov/npdes/stormwater/swfinal.cfm?program_id=6

Model Ordinances

Storm Water Managers' Resource Center. Information on a wide range of NPDES storm water related issues including model ordinances.  http://www.stormwatercenter.net/test.htm

US EPA site with a number of model ordinances
http://www.epa.gov/owow/nps/ordinance/

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This page was last updted September 4, 2014