Executive Management

Executive Management


The Sacramento Area Sewer District’s executive management team is comprised of highly experienced professionals who are devoted to our core mission and vision.


Christoph Dobson

General Manager (District Engineer)

Christoph Dobson was appointed General Manager (District Engineer) in September 2021. In this role, Dobson oversees both the Sacramento Regional County Sanitation District (Regional San) and Sacramento Area Sewer District (SASD).

Prior to his role as General Manager, Dobson served for eight years as Director of Policy and Planning, where he oversaw long-range planning efforts, regulatory and legislative affairs, high-level policy development, and scientific research. Prior to that, he served for seven years as Director of SASD Operations, where he was responsible for maintenance and operations, safety and regulatory compliance, customer care, and engineering.


Rosemary Clark

Director of SASD Operations

Rosemary Clark was appointed Director of Operations for the Sacramento Area Sewer District (SASD) in 2013. As director, she oversees maintenance and operations, engineering, customer care, and safety and regulatory compliance.

Clark has more than 30 years of experience with the County of Sacramento, almost all of which have been with the Sanitation Districts. Clark began her career with Sacramento Regional County Sanitation District in 1992 as an Assistant Engineer. She was promoted to Associate Civil Engineer and later transferred to SASD in October 1999. She continued to promote within SASD and served as Principal Engineer from June 2007 until her appointment to Director in 2013.



Director of Policy and Planning


Matthew Doyle

Director of Internal Services

Matthew Doyle was appointed Director of Internal Services in February 2020. As director, he’s responsible for overseeing information technology, fiscal administration, purchasing, warehouse, and training for both Regional San and SASD.

Prior to joining the executive management team, Doyle served SASD for 12 years as Safety and Regulatory Compliance Manager. In this role, he was responsible for the safety and wellness of more than 300 employees, ensured compliance with environmental regulations, and managed the Ordinance Enforcement Program. During his tenure with SASD, he established a proven track record of lowering SASD’s incident rate by 60 percent. 


Nicole Coleman

Public Affairs Manager

Nicole Coleman was hired as the Public Affairs Manager in May 2018. In this role, she is responsible for managing communications, media relations, stakeholder awareness, community engagement, advertising, and social media for both the Sacramento Regional County Sanitation District (Regional San) and the Sacramento Area Sewer District (SASD).

Before joining the executive management team, Coleman served Regional San and SASD for 11 years in various Communications and Media Officer positions. In these roles, her responsibilities spanned managing multi-faceted and comprehensive communications campaigns, media relations, stakeholder engagement, and advertising.

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