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Water: Stormwater

EPA's Electronic Construction General Permit Notice of Intent (eNOI) Home Page

Important eNOI Registration Information:

To submit a Notice of Intent (NOI) or Notice of Termination (NOT) under the 2012 CGP or to submit a Low Erosivity Waiver (LEW) form:

The electronic application for obtaining coverage under the 2012 Construction General Permit (CGP) and under the Low Erosivity Waiver (LEW) is accessed through a new program in EPA’s Central Data Exchange (CDX), which you must add to your CDX account profile. Note: the “SWENOI” program in CDX that was used for filing 2008 CGP NOIs and LEWs has been disabled for the CGP, and can only be used to obtain MSGP coverage.



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Click on the logo above to enter EPA's electronic Notice of Intent (eNOI) system.

EPA has updated and improved the electronic Notice of Intent (eNOI) system for construction sites that need to apply for coverage under EPA's 2012 Construction General Permit (CGP) or that need to submit a Low Erosivity Waiver (LEW) form. The eNOI system is a free online service. Please click the eNOI logo to start to file an electronic Notice of Intent or LEW waiver.

Applying for Coverage through the eNOI System

You are required to use the eNOI system to prepare and submit your NOI for coverage under the 2012 CGP. If you have a problem with the use of the eNOI system, contact the EPA Regional Office that corresponds to the location of your site. If you are given approval by the EPA Regional Office to use a paper NOI, and you elect to use it, you must complete the paper NOI form in Appendix J (8 pp, 320K, About PDF).

Note:

You may only submit an NOI for coverage under the 2012 CGP if your construction site is located in an area in which EPA is the permitting authority, which includes:

  • Idaho, Massachusetts, New Hampshire, New Mexico, District of Columbia
  • American Samoa, Guam, Johnston Atoll, Midway and Wake Islands, North Mariana Islands, Puerto Rico
  • Indian country lands within Alaska, Arizona, California, Colorado, Connecticut, Idaho, Iowa, Kansas, Louisiana, Massachusetts, Michigan, Minnesota, Montana, Nebraska, Nevada, New Mexico, New York, North Dakota, Oklahoma, Oregon, Rhode Island, South Dakota, Texas, Utah, Vermont, Washington, Wisconsin, Wyoming
  • Areas within Colorado, Delaware, Vermont, Washington subject to construction by Federal Operators
  • Limited areas of Oklahoma and Texas

See Appendix B (5 pp, 95K, About PDF) for a complete list of permit areas eligible for coverage.

Deadlines for Submitting Your NOI

You must submit your NOI according to the following deadlines, depending on the type of project:

Type of Construction Project Deadlines for Operators to Submit NOI Official Start Date for Permit Coverage
New project You must submit your NOI at least 14 calendar days prior to commencing earth-disturbing activities. You are considered covered under this permit 14 calendar days after EPA has acknowledged receipt of your NOI on the Agency’s website (www.epa.gov/npdes/stormwater/cgpnoisearch), unless EPA notifies you that your authorization has been delayed or denied.
Existing project Immediately. You are considered covered under this permit 14 calendar days after EPA has acknowledged receipt of your NOI on the Agency’s website (www.epa.gov/npdes/stormwater/cgpnoisearch), unless EPA notifies you that your authorization has been delayed or denied.
New operator of a new or existing project You must submit your NOI at least 14 calendar days before the date the transfer to the new operator will take place. You are considered covered under this permit 14 calendar days after EPA has acknowledged receipt of your NOI on the Agency’s website (www.epa.gov/npdes/stormwater/cgpnoisearch), unless EPA notifies you that your authorization has been delayed or denied.
Emergency-related projects No later than 30 days after construction commencement. You are considered provisionally covered under the terms and conditions of this permit immediately, and fully covered 14 calendar days after EPA has acknowledged receipt of your NOI, unless EPA notifies you that your authorization has been delayed or denied.

Terminating Coverage through the eNOI System

You are required to use the eNOI system to prepare and submit your Notice of Termination (NOT) under the 2012 CGP. If you have a problem with the use of the eNOI system, contact the EPA Regional Office that corresponds to the location of your site. If you are given approval by the EPA Regional Office to use a paper NOT, and you elect to use it, you must complete the paper NOT form in Appendix K (4 pp, 194K, About PDF).

Submitting an LEW Waiver Form through the eNOI System

You can use the eNOI system to prepare and submit your LEW form. To determine your eligibility for an LEW, visit: www.epa.gov/npdes/stormwater/lew.

eNOI Training

eNOI Search

Contact Information

Contact By Phone
CDX Registration Domestic Callers

(888) 890-1995
8:00 a.m. – 6:00 p.m. (EST)

Puerto Rico and Guam

(970) 494-5500

eNOI System Domestic Callers

(866) 352-7755
8:00 a.m. – 5:00 p.m. (EST)

International Callers

011 (970) 494-5500
1:00 p.m. – 11:00 p.m. (GMT)

Contact By Fax
CDX Registration (703) 227-4199
24 hours a day

Support Personnel Available to Respond
Monday – Friday
8:00 a.m. – 6:00 p.m. (EST)

Contact Online
CDX Registration CDX FAQs:
https://cdx.epa.gov/SSL/cdx/FAQ.asp
E-mail: (Send e-mail with “Technical Support" in the Subject line.)
helpdesk@epacdx.net (helpdesk@epacdx.net)
eNOI System E-mail:
noi@avanticorporation.com (noi@avanticorporation.com)
Online Form - Fill out this form to get more information about completing the NOI or to ask about the status of your NOI submission.
Construction General Permit (CGP) E-mail:
CGP@epa.gov (CGP@epa.gov)
EPA Regional Representative - Click here to see the contact information for your EPA regional representative.

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Click on the logo to enter EPA's Central Data Exchange (CDX) and start to file an electronic Notice of Intent (eNOI). Please make sure that the internet browser you are using is Internet Explorer 5.5 or higher; Netscape and Firefox are not compatible with eNOI.


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