PHASE II ENVIRONMENTAL SITE ASSESSMENTS

A determination is made whether the integrity of the property has been impacted. This determination is made through sampling and laboratory analysis. The results are compared to an appropriate set of screening levels for contaminants in soil and/or groundwater using an appropriate risk-based method, such as: the OPS Risk-based Screening Levels based on residential or industrial land-use or CDPHE's Colorado Soil Evaluation Values (CSEVs) based on residential or worker exposure and Basic Standards for Groundwater. Often temporary groundwater and/or soil vapor wells are quickly and cost-effectively installed, sampled, and abandoned through the use of a mobile dual-method Hurricane rig as shown.

Based on the results, a No Further Action (NFA) request may be justified or the site status may require Site Remediation.