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Municipal Separate Storm Sewer System (MS4) Overview and Annual Training Course

07.28.2025

DURATION 1 hour

In accordance with the Texas Pollutant Discharge Elimination System (TPDES) Phase II MS4 General Permit, all individuals who assist in implementing their municipality’s Stormwater Management Program (SWMP) are required to obtain annual training. This recorded webinar, led by Liz Stone, CESSWI, CPESC and Arnelle Gonzalez is provided to municipal employees, District Operators, and others looking to improve stormwater quality in their community. This training will enhance the attendee’s knowledge of the MS4 Program and stress the main goal, which is to eliminate the number of pollutants in stormwater runoff.

 

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Your Instructors

Liz Stone, CESSWI, CPESC is an esteemed expert in stormwater quality at Quiddity, simultaneously serving as the Project Manager for their MS4 Program. With a rich background, Liz has collaborated extensively with multiple municipalities, water districts, and governing bodies to conceive, execute, and oversee their stormwater quality strategies and mandates. Possessing an impressive career spanning over 20 years, Liz specializes in watershed analyses, stormwater administration, and adherence to stormwater permit requirements, particularly focusing on NPDES and TPDES guidelines.

Liz’s proficiency also extends to crafting comprehensive Phase I and Phase II Stormwater Management Programs (SWMPs), inclusive of implementation strategies and compliance evaluations. As a dedicated MS4 Engineer, Liz has taken on the role of primary program author and overseer for over 30 MS4 projects. Moreover, she has capably led as the project manager for more than 20 collaborative districts, further showcasing her adeptness in coordinating complex initiatives.

Arnelle Gonzalez is an Environmental Professional at Quiddity with a strong background in environmental investigations, regulatory compliance, and environmental and chemical research. She supports Quiddity’s MS4, stormwater, and wastewater programs through permit development and acquisition, SWMP implementation, industrial user pretreatment programs, and client coordination across Texas. Her work includes stormwater quality, permitting, and water use reporting, helping clients meet regulatory requirements while supporting environmental responsibility.

Arnelle’s attention to detail and focus on client service help deliver reliable, audit-ready environmental programs that support long-term compliance and community sustainability. She continues to grow in her role and looks forward to expanding her impact at Quiddity by providing dependable, responsive support for communities across Texas.

Arnelle Gonzalez  
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