Environmental Investigation Services, Inc.


Environmental Investigation Services, Inc. (EIS, Inc.) was formed in 1997 with the express purpose of providing thorough and cost-effective environmental investigations and compliance consulting for real estate transactions in Central and Northern California. We proudly celebrated our 25th anniversary in 2022.

We are an environmental consulting firm composed of a small team of environmental consultants, including Environmental Professionals, Professional Geologists, Geologists, an Environmental Assessor, and an Industrial Hygienist. Our clients range from large engineering firms to commercial property owners, commercial banks, realtors, developers, large hospitals and hotels, non-profit land trusts and housing corporations, cities, counties, and state government agencies.

EIS, Inc. has remote-based personnel conveniently located throughout the Greater Bay Area, allowing us to efficiently serve clients in 10 Greater Bay Area Counties as well as the central coast, central valley, and southern California.

Check out the map below to view some of our recent projects.

Our Services


Environmental Site Investigations

Phase I - Environmental Site Assessments: With a Cal/EPA certified Registered Environmental Assessor of 20 years experience on staff, EIS is qualified to conduct thorough and cost efficient Phase I Environmental Site Assessments (ESAs)…

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Soil, Soil Vapor, and Groundwater Investigations

Preliminary Site Assessment investigations may range from soil only to soil and groundwater investigations. All soil and groundwater investigations are performed under the guidance of a professional geologist or engineer…

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Underground Storage Tanks

EIS manages underground storage tank (UST) programs from initial tank location research, tank integrity assessment, tank removal and closure, soil and groundwater sampling and remediation, and monitoring well installations in compliance with local, state, and federal regulations…

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Remedial Action

EIS has over 8 years of experience designing and managing remedial action clean-up. When soil or groundwater remediation is required, we’ll design the best system…

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Groundwater Quality Monitoring

EIS professional staff oversees the installation of groundwater monitoring wells and conducts sampling and monitoring of the wells according to State RWQCB requirements…

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Air Quality Monitoring

EIS provides Indoor Air Quality (IAQ) services including indoor air surveys and fungal and bacteria inspections. Our Industrial Hygienist, with 20 years of experience, performs air quality inspections to determine the presence of air contaminants for compliance with applicable regulatory standards…

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Hazardous Materials Business Plans and Other Compliance Projects

EIS provides Spill Prevention & Control plans as well as wastewater compliance sampling…

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