970-260-8468 [email protected]

Our Environmental Services

Learn about our history and work

Phase I Environmental Site Assessments

A Phase I Environmental Site Assessment (ESA) is a report prepared for a real estate holding which identifies potential or existing environmental contamination liabilities.

Phase II Envirnmental Site Assessments

If environmental contamination is discovered or suspected, a Phase II site assessment is often performed to determine the extent of contamination across the property.

Site Remediation

Avant Environmental Services can manage the removal or stabilization of discovered contamination following regulations and get you a No Further Action letter from the regulators.

Transaction Screens

If a property has a low probability of being contaminated, an Environmental Transaction Screen following ASTM Standard E-1528, which costs less than a Phase I ESA.  Call for a free consultation.

Where We Work

Experienced in western Colorado and eastern Utah with Hundreds of Phase I ESAs accomplished successfully.

Overseeing and managing your environmental projects

Our solutions are designed to work for you

Ed Baltzer has prepared hundreds of Phase I Environmental Site Assessments since 1990


Clean properties are confidently purchased and developed with a finding of no recognized environmental conditions or cleaned up with a Voluntary Cleanup and Remediation Plan, a No-Further Action Determination, and/or an Environmental Covenant as provided by Colorado or Utah statutes and regulations.


Avant Environmental has helped clients identify and remediate asbestos, solvent, petroleum, PCB, metal and other contamination in soil, soil vapor, groundwater, and buildings.


Specializing in overseeing and managing your environmental projects, starting and possibly ending with a Transaction Screen or a Phase I ESA to assure your real estate property is free from regulated environmental contamination.