Phase I, II and III Site Assessments

Tri-State Environmental has the knowledge, experience and industry contacts to assist in all phases of environmental site assessments.

 Phase I Environmental Site Assessment 

The Phase I Environmental Site Assessment (ESA) uses existing information to understand the property conditions by examining current and historical uses of the site and potential threats to human health or the environment. Environmental assessments must be completed or overseen by an environmental professional, which may include a licensed geologist, engineer or site professional.  

A Phase I Environmental Site Assessment also helps determine who is potentially liable for environmental contamination found on a property.

If evidence of known or potential contamination is found at the property, further investigation (a Phase II Environmental Site Assessment or additional assessment) is needed. 

Phase II Environmental Site Assessment 

The Phase II Environmental Site Assessment (ESA) is recommended if the Phase I Environmental Site Assessment results reveal known or potential contamination found on the property, sometimes called recognized environmental conditions (RECs). An environmental professional develops a sampling plan to evaluate the potential presence of contamination from hazardous substances and petroleum on the property and determines the sources and exposures. 

 While a Phase II Environmental Site Assessment typically follows a Phase I Environmental Site Assessment, the site assessment process is not always linear.  In some cases, an updated Phase I or Phase II  Environmental Site Assessment may be needed. 

 Phase III Environmental Site Assessment 

The Phase III Environmental Site Assessment determines the extent of contamination by expanding on the data from the previous ESA's when needed and uses the cumulative information to develop and conduct  remediation and monitoring plans. 

Environmental remediation is the removal of pollution or contaminants from water (both ground water and surface water) and soils. There are numerous remediation methods available today. The most efficient, safe and cost effective measures vary form site to site and will change due to site logistics, lithology and/or contaminated medias, specific contamination type, contamination concentrations.

Remediation is  generally subject to many regulatory requirements.