top of page

TEAM LEADERS

Sandi Clexton is president and CEO of Datum Environmental Consulting, Inc.

Sandi facilitates the day to day operations with a special emphasis on timely and quality-driven project completion. Sandi’s leadership, along with Datum's experience and teaming partners resulted in Datum's 1st federal project as a prime. Prior to founding Datum, Sandi spent 20+ years in business management while attending ongoing corporate leadership trainings. Degreed in marketing, Sandi understands and commits to the importance of aligning the best people, products and services to exceed the expectations of the client.

David Clexton is the lead geologist of Datum Environmental Consulting, Inc.

David is a California licensed Professional Geologist with 30 years experience in project management with NAVFAC Southwest, NAVFAC Northwest, Army Corps of Engineers, and various commercial and private clients. As a licensed P.G. since 2000, David’s hands on field experience and work ethic has gained him respect with federal customers and commercial prospects. This has trickled down to Datum’s growth within the private sector to include the construction industry. David’s vast work experience spans from Jet Propulsion Laboratory in Pasadena, CA to as far as Sierra Leone West Africa.

CAPABILITIES

DATUM Environmental Consulting, Inc. is based in Carlsbad, CA. We provide solutions to businesses facing issues with contaminated media including soil, soil gas, air, and groundwater. We provide full spectrum support including site investigation, assessment, monitoring, remediation, and site closure. Our customers range from local builders to the Federal Government, who have placed their trust in our technical expertise. Through the vast knowledge of our lead geologist, David Clexton, PG, and strategic teaming partners, Datum Environmental Consulting is here to take care of your environmental requirements so that you can proceed with your projects seamlessly. We pride ourselves in the professional and personalized approach our small business can provide, while maintaining the highest standard of technical performance.​ As a California Professional Geologist, David has over 30 years of environmental site management experience working on local, State, and Federal Government programs.

ABOUT US
OUR ADVANTAGE

Datum Environmental Consulting, Inc. provides expertise, integrity, and the personalized service that only an experienced business can offer.

  • Project Management

  • Preparations of Work Plans and Safety Plans

  • Collection, Assessment, and Interpretation of Complex Data

  • Underground Storage Tanks (USTs)

  • Chlorinated Solvent Releases

  • PFAS Investigations

  • Large or Scale Projects

  • Brownfield Redevelopment

  • Well Rehabilitation

  • WestbayTM Sampling

  • Enhanced Insitu Bioremediation

  • Insitu Chemical Oxidation

  • Excavation

  • Soil Vapor Extraction

  • Light and Dense Non-Aqueous Phase Liquids (LNAPL/DNAPL)

  • Best Management Practices (BMPs)

  • Soil Sampling

  • Groundwater Sampling

  • Air Sampling

  • Soil-Gas Sampling

  • RCRA-CERCLA Documentation

  • Regulatory Interface Support

IMG_1910.JPEG
IMG_2254.JPEG
bottom of page