About North State Environmental

A Small Woman-Owned Business

Located in Chico, we understand and appreciate the technical and regulatory issues unique to the Central Valley and Northern California.  Our local focus means that we understand the geology, hydrogeology, climate, and regulations that affect local projects, as well as how economic and social parameters may influence those projects.  NSE's owner, Christine Brown, has worked extensively with the Central Valley Regional Water Quality Control Board and local regulatory agencies from San Joaquin County north.


Although we are a small firm, we can provide our clients with a broad range of services through a unique set of alliances forged with other professionals in the Sacramento Valley.  These services include remedial construction, site restoration activities, landfill engineering, hydrology, wetlands assessment, soil science, environmental planning, habitat restoration, ecological studies, and NPDES permitting. 

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Christine Brown, PG, CHG, CEG

Owner, Hydrogeologist

Owner Christine Brown has over 35 years of environmental consulting and regulatory experience, specializing in impacts to groundwater from landfills and fuel spills.  Ms. Brown has managed a wide variety of projects, ranging in size from leaking underground storage tanks (LUSTs) at small service stations to site characterization of a closed refinery.  She has successfully obtained No-Further-Action status for over 100 LUST sites in California.  More recently, Ms. Brown worked for Butte County Public Health Department following the Camp Fire, reviewing soil sampling results and issuing cleanup certifications to property owners.  Ms. Brown is a California licensed Professional Geologist, Certified Hydrogeologist, and Engineering Geologist.

Dr. David Brown

Principal Hydrologist

David Brown has over 36 years of applied research and environmental consulting experience. He has received and completed more than $1.6 million dollars in grants and contracts. This work focused on mined land reclamation, agricultural nonpoint source pollution, riparian restoration, groundwater-surface water interactions, watershed studies, and pesticide runoff prevention.  Dr. Brown has reviewed grant proposals for the National Science Foundation, and has served on several national grant program review panels.  He served as a member of the Technical Advisory Committee of the Butte County Water Commission for eight years.

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