FACT SHEET - Permit Name 2019 Multi-Sector General Permit (2019 MSGP) for Stormwater Discharges Associated with Industrial Activities

Sep 1, 2026

Fact Sheet describes Nevada’s 2019 Multi-Sector General Permit (2019 MSGP) under NAC 445A.236, governing stormwater discharges associated with industrial activity. It outlines the permit purpose, regulatory background under the NPDES program and CWA section 402(p), and identifies the permit scope across industrial sectors including non-metals mining. The document summarizes key changes from the 2008 ISGP, including the restructured permit organization and electronic reporting and application requirements for NOI, No Exposure, and notices.

LanguageEnglish

CategoryForms

FormatDOCX

Pages9

Reading Time3 min

AccessFree to download

Permit Overview

Background

Purpose and Coverage

Summary of Changes

Structure and Appearance of the Permit

Electronic Reporting Requirements

Electronic Application Requirements

FACT SHEET (Pursuant to NAC 445A.236) Permit Name: 2019 Multi-Sector General Permit (2019 MSGP) for “Stormwater Discharges Associated with Industrial Activities” Permit Number: NVR050000 Location: Currently, there are approximately 726 separate industrial facilities permitted statewide. Flow: In response to non-point source discharges from precipitation (rainfall and snowmelt) Description of Discharge: Stormwater runoff from industrial facilities. Typical pollutants are variable depending on the industrial facility. Receiving Water Characteristics: Variable depending on industrial facility. Background Prior to the Water Quality Act of 1987, there were numerous questions regarding the appropriate means of regulating stormwater discharges within the National Pollutant Discharge Elimination System (NPDES) program due to the serious water quality impacts of stormwater discharges, the variable nature of stormwater, and the large number of stormwater point sources. The United States Environmental Protection Agency (U.S. EPA) undertook numerous regulatory actions in an attempt to address these unique discharges. Congress, with the addition of section 402(p) of the Clean Water Act (CWA), established a structured and phased approach to address stormwater discharges and fundamentally altered the way stormwater is addressed under the CWA as compared with other point source discharges of pollutants. In 1990, pursuant to section 402(p), U.S. EPA promulgated the Phase I stormwater regulations. The Phase I regulations required NPDES permit coverage for discharges associated with industrial activity and from “large” and “medium” municipal separate storm sewer systems (MS4s). In 40 CFR 122.26(b)(14), U.S. EPA defined the term “stormwater discharge associated with industrial activity” in a comprehensive manner to cover a wide variety of facilities. The Nevada Division of Environmental Protection (the Division) received authorization to administer the NDPES program in Nevada on November 19, 1975. The NPDES permitting program applies throughout Nevada, except on Tribal lands, where U.S. EPA continues to be the permitting authority. Purpose The purpose of this Fact Sheet is to describe the permitting requirements of the 2019 MSGP for stormwater discharges associated with industrial activity, including the non-metals mining sectors. This Fact Sheet will also describe the details for significant changes from the 2008 Industrial Stormwater General Permit, hereinafter referred to as the 2008 ISGP. The following categories listed in 40 CFR 122.26(b)(14) are included for coverage under this permit: categories i, ii, iii (except for facilities defined with SIC code 10 (Metal Mining), iv through ix and xi. Table 1, in this Fact sheet shows the sectors covered by this permit. Additionally Appendix B of the permit presents more specific information about each sector. A separate NPDES general permit for industrial activity associated with Metals Mining (NVR300000) has been developed for sector G. The Division is issuing the 2019 MSGP (NVR050000) to replace the expired 2008 ISGP. The permit will have a five year term. The permit contains provisions that require industrial facilities in 28 different sectors to, among other things, implement control measures and develop a site-specific stormwater pollution prevention plan (SWPPP) to comply with the Division permitting requirements. In addition, the 2019 MSGP includes a 29th sector, allowing the Division to permit additional industrial activities which the Division has determined requires permit coverage for industrial stormwater discharges not included in the other 28 sectors. The Division’s 2019 MSGP is patterned after U.S. EPA’s MSGP 2015. Summary of Changes Structure and Appearance of the Permit The Division restructured the 2019 MSGP so that it would be better organized to present requirements in a more readable manner. It is the Division’s intent that this structure will enhance the Permittee’s unders

FAQs

What permit does the fact sheet cover and what is its scope?

The fact sheet covers Nevada’s 2019 Multi-Sector General Permit (2019 MSGP) for stormwater discharges associated with industrial activities, including non-metals mining sectors.

How does the 2019 MSGP relate to the expired 2008 ISGP?

The fact sheet explains that the 2019 MSGP replaces the expired 2008 Industrial Stormwater General Permit and highlights significant changes, including permit restructuring and reporting requirements.

What electronic reporting requirements apply under the 2019 MSGP?

Notice of Intent (NOI) and No Exposure Certifications must be submitted electronically through the Division’s online General Permits System, and Notices of Termination must be submitted electronically using the Division’s online form.

Sep 1, 2026

Upload by Aria Callaghan