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About Us

We bring experience and efficiency to every project, and we strive to build effective, long-term working relationships. We build a responsive team designed specifically for your needs and focused on your requirements. You will always have a regular and trusted point of contact throughout the complete life cycle of your project.


Baseline’s staff includes professional geologists and environmental engineers. Read about our expertise and qualifications below.

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Patrick Sutton
Principal Environmental Engineer, PE
M.S., Civil and Environmental Engineering

Patrick is the Principal of Baseline Environmental Consulting and specializes in the assessment and remediation of hazardous materials released into the environment. He has managed numerous air quality and hazardous materials assessments for transportation, school, and in-fill development projects. His proficiency in a wide range of technical software allows him to thoroughly and efficiently assess and mitigate environmental concerns. 

William Scott

William Scott
Senior Field Geologist, PG, CHg, CEG
B.S., Geology

Bill has been with Baseline for more than 30 years and has managed field activities for more than 150 groundwater and hazardous waste investigations and remediation projects. He also has performed mitigation monitoring for large-scale construction projects and conducted environmental audits of public and industrial facilities. He has also managed and conducted numerous environmental investigations for soil-gas, soil, and groundwater.

Cem Atabek

Cem Atabek
Senior Environmental Engineer 

B.S., Environmental Engineering 

Cem Atabek is an Environmental Engineer with over 15 years of environmental consulting experience. He has managed numerous hazardous materials site assessments, investigations, and remediation, including soil gas mitigation. He also has experience conducting CEQA analyses of hazards and hazardous materials, hydrology and water quality, and geology and soils issues for a wide variety of land-use projects.

Bruce Abelli-Amen

Bruce Abelli-Amen
Principal Hydrogeologist, PG, CHg  

M.S., Geology

Bruce has been with Baseline for over 30 years and has been a managing Principal of the firm. He has managed numerous CEQA/NEPA projects (including large infrastructure and mining projects), conducted soil and groundwater quality investigations, and overseen remediation programs. He has extensive experience analyzing and resolving complex water quality and hydrogeologic challenges associated with new development and redevelopment.

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Yilin Tian
Environmental Engineer
PhD, Environmental Science and Engineering

Yilin is an Environmental Engineer, specializing in air quality, greenhouse gas emissions, and noise analysis. Prior to joining Baseline, she worked as a postdoctoral researcher at University of California, Berkeley for 4 years. Her areas of expertise include air quality, sources and transport of pollutants in the built environment, and human exposure assessment. She is familiar with air pollution models such as CalEEMod and AERMOD, and state/local environmental regulations.


Declan Gill
Environmental Scientist
MSc, Environmental Studies

Declan is an Environmental Scientist, specializing in hazardous materials and waste site assessments, investigations, and remediation projects. He has conducted numerous site investigations for soil, groundwater, and surface water monitoring. He has excellent technical environmental report writing skills which he has gained through his career. 

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