Contact
Contact Us
Contact
Contact Us

Service Area

Due Diligence

Minimizing Risks and Ensuring Informed Decision-Making

Providing Crucial Due Diligence To Residential, Commercial, Public Entity, and Industrial Clients

Three workers in hard hats watch the sunset over a construction site in the city skyline.

Terraphase prepares Phase I Environmental Site Assessments (ESAs) in accordance with the ASTM International (ASTM) E1527-21 Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, to assess for potential liabilities and to provide release of liability under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). Phase I ESAs are non-intrusive evaluations that achieve the following:

  • Risk Mitigation: Uncovers hidden environmental hazards, such as contamination from past industrial activities, which could lead to costly remediation efforts.
  • Legal Compliance: Offers protections under CERCLA, shielding property owners from potential liability for contamination.
  • Informed Decision-Making: Enables stakeholders to make well-informed decisions about purchasing, financing, or developing the property.
  • Financial Protection: Minimizes risks associated with financing potentially contaminated properties, safeguarding lenders investments.
Contact US

Representative Projects

See How We’ve Made A Difference Across Diverse Industries

Two aboveground cylindrical storage tanks.

Former Horse Training Facility Phase I ESA

Terraphase performed a Phase I Environmental Site Assessment (ESA) at a former horse training facility located in Southern California. The

Exterior view of high school building.

Northern California High School Facility Phase I ESA

Terraphase conducted a Phase I Environmental Site Assessment (ESA) for a major high school campus modernization project for a high

View of vineyard with town in background.

Duckhorn Winery Portfolio Environmental Assessment

Terraphase was engaged by a global, consumer-focused private equity client in 2016 to conduct environmental due diligence for its acquisition

View Full Project List

Meet Our

Due Diligence Senior Practitioners

Julie Lynne Welch

Julie Lynne Welch

Principal Engineer
Alice Hale Price, PE, ENV SP

Alice Hale Price, PE, ENV SP

Director of Bay Area Operations, Principal Engineer

Michael Potts

Michael Potts

Senior Principal Geologist
John Hildenbrand

John Hildenbrand

Principal Environmental Scientist
Meet Our Team

Back to the Environmental Landing Page

Explore More About Our Comprehensive Environmental Services

Let’s Connect

Join Us In Making A Difference

About

Markets

Services

Social

Linkedin-in

© TERRAPHASE ALL RIGHT RESERVED.

Christopher Alger, PG, CHG, CEG

Senior Principal Engineering Geologist

Christopher’s Profile

Christopher Alger, PG CHG, CEG, is a Principal Engineering Geologist at Terraphase and brings over 35 years of scientific investigation, design and consulting experience in a multidisciplinary problem-solving practice that spans contaminant hydrogeology and site remediation to geotechnical engineering for landslide and slope failure studies.

In his subsurface site characterization and remediation practice, Chris has developed creative solutions to accelerate remediation, regulatory closure, and redevelopment of impaired properties in California and throughout the United States.

Chris has designed and implemented a wide range of remediation technologies, including soil vapor extraction systems for volatile chemicals, in situ fixation injection for hexavalent chromium, in situ and ex situ bioremediation, air sparging, ozone injection, groundwater extraction and treatment, dewatering systems, and excavation programs.

Chris is routinely engaged to provide expert review and opinions in peer review and litigation projects for insurance and attorney clients involved with multi-party disputes nationwide. Chris continues to provide expert services for dry cleaner litigation and resolution, superfund defense, RCRA facility operations and closure, cost recovery, and CERCLA claims. His work in this capacity has included preparing declarations, expert reports, remedial cost estimates, depositions, and other expert witness services. Chris’s geotechnical engineering work has involved mapping of Landslides and rockfalls in the San Francisco Bay Area, Yosemite National Park, and Utah’s Wasatch Range. He has served as the engineering geologist responsible for pre-construction geotechnical investigations, oversight of client and third-party residential and commercial grading projects, and geologic hazard investigations.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.