Industrial Stormwater Compliance Update

California's New Stormwater TMDL Rules & It's National Effects

At the end of last year, California adopted the first-in-the-nation stormwater permit regulation incorporating TMDLs and NELs. There are several major changes in store for the approximately 10,000 industrial facilities that discharge stormwater into California waterways. Most notably, for the first time, exceeding a numeric effluent limitation (NEL) will be an automatic violation of the permit, subject to enforcement and plaintiff’s citizen suits.

During this webinar, hear Mapistry experts and our guest speaker from the California Water Board discuss the regulatory changes and discover how manufacturers are getting ahead of impending stormwater permit changes by putting in place better controls and technology.

What you need to know & how to prepare

Experts from Mapistry and the California State Water Resources Control Board (SWRCB) are co-hosting a 1-hour master class to help you understand and prepare for the new stormwater regulatory changes that go into effect next year. Also, learn how technology is becoming an essential ingredient for stormwater success — empowering facilities to identify and address compliance issues before they turn into violations, fines, or potential lawsuits.

Topics we’ll cover:

  • New stormwater requirements (TMDLs, NELs, etc.)
  • Regulatory impacts and new legal risks
  • Defensive “tech” strategies to stay in compliance


Laurel Warddrip, Stormwater Program Manager at California State Water Resources Control Boards

Laurel Warddrip is the industrial stormwater program manager for the SWRCB. Since 2008, she has been developing stormwater permits for them. She holds a BS in ecology and biology from UC Santa Cruz and is completing her associates degree in Geographic Information Systems.

Ryan Janoch, Founder of Mapistry

Ryan is the founder of Mapistry which provides stormwater services and online compliance software to industrial facilities. He is a professional engineer with nationwide experience in developing and implementing stormwater compliance programs for hundreds of industrial sites, including ready-mix concrete plants, metal recyclers and bulk marine terminals.

Ryan is a former member of the State of Virginia’s Stormwater BMP Clearinghouse Committee and a current member of the Bay Area Air Quality Management District (BAAQMD) Hearing Board. He has an MS in Civil Engineering from the University of Maryland and a BS in Biology and Geology from Tufts University.