Board Members

Picture Bio

Jimmy Dang, P.E.


Technical Services Manager
Oro Loma Sanitary District
Phone: (510) 481-6981

Jimmy Dang manages the laboratory, pretreatment compliance, and Capital and Renewal & Replacement programs related to the treatment facility.  He oversees the long-term planning for the treatment plant, prepares design documents, manages construction, and all other aspects of project management. Jimmy holds a B.S. in Civil Engineering from Cal Poly San Luis Obispo and a MPA from CSU Dominguez Hills. He is a registered Civil Engineer licensed in the State of California as well as a Construction Health and Safety Technician.


Bob Allen

Vice Chair

Managing Engineer for Water and Wastewater Infrastructure
Trident Engineering
Phone: 925-471-2124

Bob Allen is the Managing Engineer for the Water and Wastewater Infrastructure Group for Trident Environmental and Engineering, Inc. He manages the technical marketing support for projects involving infrastructure design and construction; manages the design document preparation for civil site development and improvements, yard piping design, and process pipeline design; and performs quality assurance reviews for site design and construction. Bob has a B.S. in Mechanical Engineering from New Mexico State University in Las Cruces, NM and an M.S. in Civil Engineering from the University of California in Berkeley, CA. He is a registered Civil Engineer in the State of California.


Amanda Cauble, P.E.

Chief Financial Officer

Associate Engineer
Central Contra Costa Sanitary District
Phone: (925) 229-7363

Amanda has experience in planning and design of water and wastewater infrastructure in the private and public sectors. At Central San she manages the design and construction of sewers as part of the annual replacement and rehabilitation program.


Nancy McWilliams, P.E.


Senior Civil Engineer
Solano Irrigation District
Phone: (707) 455-4018

Nancy’s role as Senior Civil Engineer for Solano Irrigation District includes providing engineering support for maintenance and operations, improvement plan preparation for in-house construction, development review, and CIP management.


Dustin La Vallee, P.E.

Communications Officer

Associate Engineer
East Bay Municipal Utility District (EBMUD)
Phone: (510) 287-1152

Dustin is an Associate Civil Engineer with EBMUD in Oakland where he works on the design and project coordination of various water distribution pipeline projects. He has experience in the private and public sectors and has worked on a variety of environmental and civil engineering related projects.


Alexandra Watson, E.I.T.

At-Large Representative

Associate Engineer
Hydroscience Engineers
Phone: 925.332.5221 ext. 208


Bill Chavez, P.E.

Past Chairman

Project Manager
Sacramento Regional County Sanitation District
Phone: (916) 876-6015

Bill has been employed by the Sacramento Regional County Sanitation District and the County of Sacramento for over 20 years.  He has worked on the design and construction of interceptors ranging from 36 inches up to 10 feet in diameter, involving both trenchless technology and conventional open trench installation.  He has also been on the Project Management Team for the construction of two sewer pumping station, 10 and 40 MGD, in the City of Folsom and Citrus Heights.  He is a Professional Civil Engineer registered with the State of California.  Bill enjoys traveling, biking, photography, and tennis.

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