Board Members

Company: Tanner Pacific, Inc.

Mike is a Principal Co-Founder of Tanner Pacific, Inc., specializing in Construction Management and Owner Advisor services for all manner of Water Resource projects. Mike has over 40 years’ experience as a Construction Manager working for public agencies, contractors and consulting firms. Mike started his career working for several public agencies, including the City of Palo Alto, the City of Fremont and Union Sanitary District. Mike then moved into consulting working on a variety of water resource projects including treatment facilities, pump stations and over 50 miles of pipeline installation. The pipeline work included all methods of installation including open cut, microtunneling, HDD, auger bore and more. Mike also has experience as an Owner Advisor (OA) for various collaborative delivery systems (CMAR, Design-Build, Progressive DB) on award-winning projects. Mr. Jaeger obtained his Civil Engineering Degree from San Jose State University. In addition to being an Associate DBIA and QSD/QSP certified, he is a registered California Civil engineer. Additionally, Mike has over 20 years of experience as a Partnering Facilitator for all types of construction projects throughout California.

Company: Black & Veatch

David is a Senior Project Manager with Black & Veatch and has 30 years of experience in the water and wastewater market as a project engineer, construction manager and project manager.  His experience ranges from developing plans and specifications for conveyance and distribution systems to preparing environmental documentation and feasibility reports for large capital improvement projects.  David worked on projects ranging from rehabilitation of pipes, two-pass tunnel installations, microtunneling, to large diameter tunneling.  He also has experience as both a consultant and an owner having worked for a large municipality in Los Angeles County for 19 years.

Company: Central Contra Costa Sanitary District

Sasha Mestetsky is a Senior Engineer in the Capital Projects Division at Central Contra Costa Sanitary District (Central San) in Martinez, California. He manages Central San’s Collection System Program, which carries an annual fiscal budget of approximately $40 million. Sasha oversees the design and construction management of all sewer system replacement and renovation capital improvement projects, most of which utilize trenchless technologies.
Sasha brings 30 years of experience in the design and construction of collection system projects. He holds a Bachelor of Science in Civil Engineering from California State University, Sacramento, and is a California-licensed Civil and Mechanical Engineer.
Sasha serves as Treasurer of the WESTT Chapter Board of Directors. He is a longtime member of the Water Environment Federation (WEF), the North American Society for Trenchless Technology (NASTT), and the Northern California Pipe Users Group (PUG). Passionate about all things trenchless, Sasha enjoys sharing his experiences and actively promotes trenchless technology education.

Company: Bennett Trenchless

Sandie Dudley is a registered professional engineer in the State of California with over 25 years of experience in the planning, design, and construction of water infrastructure projects with a focus on pipeline installation and rehabilitation utilizing trenchless technologies. Over the course of her career, Sandie has worked throughout the western region both as a civil pipeline and specialty trenchless design consultant leveraging her understanding of the nuance and interplay between the two disciplines to deliver successful projects. Sandie’s trenchless experience includes horizontal directional drilling, microtunneling, auger bore, pipe bursting, and rehabilitation utilizing cured-in-place pipe, slip lining, and spiral wound liner. Sandie has been actively involved in various professional organizations throughout her career, supporting their roles in the advancement of industry practices and providing development opportunities for professionals. She has served on the Northern California Pipe Users Group (Nor Cal PUG) Board of Directors and in California Water Environment Association (CWEA) committee leadership roles at both the local and state levels. Sandie has co-authored and presented multiple technical papers on trenchless topics at industry conferences and was a contributing author for the 5th edition of the NASTT HDD Good Practices Guidelines released in 2024. Sandie has served on the Annual NASTT No-Dig Conference Auction Committee since 2022, raising money for the NASTT Educational Fund. She is also currently on the WESTT Student Chapter Subcommittee, working to recruit and develop the next generation of trenchless professionals.

Company: National Plant Services

Michelle received a BS in Civil Engineering from Purdue University, and is a registered California PE with 33 years of water and wastewater experience. She has worked as a Project Engineer for Black & Veatch, as an Asset Management Engineer with the East Bay Municipal Utility District, she owned her own Engineering & Construction firm, and for the last 16 years has specialized in multi-sensor inspections and trenchless rehabilitation of sewer, storm, and water assets. She is currently the Regional Manager for National Plant Services, Inc., covering the 12 Western States, including Hawaii and Alaska.
Michelle is also active in many industry organizations. In addition to serving as a Board Member of WESTT, she serves on the NASSCO Technical Advisory Council (TAC), and led the workgroup in charge of NASSCO’s new PACP/MACP/LACP Version 8.

Company: The HDD Company Inc.

Scott’s journey in the trenchless industry began in the early 1990s with horizontal directional drilling (HDD) in Canada, where he developed and grew his skills in both the Canadian and US markets operating direction drilling guidance systems. His passion for the industry fueled his growth, as he expanded his expertise in operating guidance systems in both the Oil Field and HDD markets across North America. In 2011, Scott founded an HDD engineering company, leveraging his knowledge in engineering, geotechnical assessments, environmental evaluations, and construction supervision. This venture focused on growth and sustainability, and Scott’s ability to understand market needs and adapt to industry trends established the company as a leader in the field. While operating the engineering company Scott was on the Board of Directors for the NW chapter of the NASTT based out of Calgary, Alberta for 4 years. In 2022, Scott transitioned to President of Direct Horizontal Drilling (DHD), where he strategically focused on enhancing client relationships and expanding the client base to maintain DHD’s position at the forefront of the industry. As of fall 2024, Scott has embarked on a new chapter as President of The HDD Company in Casa Grande, Arizona. He is dedicated to supporting a talented team, tackling complex technical and commercial challenges, and promoting overall growth within The Crossing Group structure. By engaging directly with owners, municipalities and pipeline companies, he aims to foster relationships that lead to safe and successful projects.

Company: Sekisui SPR Americas, LLC

Jacquie Jaques is the Regional Manager for Sekisui SPR Americas for the Western US. Jacquie has over 25 years of industry experience working with manufacturers and contractors specializing in pipeline condition assessment and trenchless rehabilitation solutions. She started her career working for a technical services company specializing pipeline cleaning and CCTV condition assessment. During that time, she worked with municipalities, FEMA and OES on post-earthquake pipeline condition assessment inspection that enabled agencies to obtain federal funding for projects. With a high demand for cost effective solutions to repair our infrastructure, she became involved with cutting edge trenchless technologies that could meet stringent industry design and performance standards.

Jacquie has been actively involved in numerous industry committees over her career. Early on, she was a member and recording secretary for the “Green Book Pipeline Rehabilitation Task Force” which evaluated new trenchless technologies that were germane to public works construction. This task group wrote the first Part 5 of the “Green Book” “Pipeline System Rehabilitation”. Jacquie is still active on the committee today and works with the subcommittee to ensure that the specifications are current and still relevant to public works construction.

As a WESTT Board Member, she is the Education Liaison for the university members and conducts the outreach on behalf of the committee. Jacquie has also authored several industry papers and presented at national and regional conferences including NASTT, WESTT, Pipe Users Group and HWEA. She has also authored or contributed to several magazine articles including NASSCO and Trenchless Technology.

Company: Black & Veatch

Justin is a licensed professional engineer specializing in engineering and construction support for underground infrastructure projects. As a Senior Geotechnical Engineer and Tunnels Regional Business Lead, he has led the engineering of numerous trenchless pipeline installations, including horizontal directional drilling, pipe jacking, microtunneling, and horizontal auger boring. He is an active participant in industry organizations and conferences, including NASTT, WESTT, the Pipeline Users Group (PUG), and ASCE’s Geo-Institute. Justin is based in the San Francisco Bay Area and holds a BS in Civil Engineering from Cal Poly San Luis Obispo and an MS in Geotechnical Engineering from UC Berkeley.

Company: Sunbelt Rentals

Tiffanie Mendez is a 29-year career professional specializing in the construction and operation of temporary flow conveyance systems and temporary utilities for bypass pumping, power, HVAC and environmental remediation. Residing in San Pablo, CA, Ms. Mendez is currently the Western United States Regional Manager for Sunbelt Rentals Pump Solutions.
In addition to newly appointed board member duties at WESTT, Ms. Mendez chairs the student programs committee for the North American Society of Trenchless Technology and serves on the safety committee for the Canadian Underground Infrastructure Innovation Centre (CUIIC).
She holds a BSBA from Northern Arizona University and an MBA from Cal State University, East Bay.

Company: Carollo Enineers

Devin has over 25 years of geotechnical engineering experience in Hawaii, and has served as a geotechnical and trenchless engineer on projects requiring microtunneling, horizontal directional drilling, and guided bore methods, as well as shallow and deep foundations, rockfall mitigation, deep shaft excavations, and soil stabilization. He is a professional civil engineer licensed in Hawaii and California, and obtained his Bachelor and Master’s Degree in Civil Engineering from the University of Hawaii at Manoa. Currently a Principal Infrastructure Engineer at Carollo Engineers, he has published and presented two papers on trenchless pipe installation at the North American Society of Trenchless Technology No-Dig conferences.

Company: Delve Underground

Su Soe began her professional practice in 2016 and has since supported a wide range of geotechnical, civil, trenchless, and tunnel projects. She has extensive experience conducting subsurface investigations and preparing geotechnical engineering analyses and recommendations for underground structures and pipelines. Her design experience spans a broad range of trenchless installation methods, including Horizontal Directional Drilling (HDD), Microtunneling, Pilot Tube Method, and Guided Steerable Auger Boring, as well as shallow and deep foundations, utility and transit tunnels, and deep excavations. Her construction observation and inspection experience includes trenchless installations, pile and pier installation and testing, and utility tunnel construction.