POLICY ADVISORY

GEOLOGICAL AND OTHER
NON-ENGINEERING SERVICES

ENGINEERING SERVICES

Emergency Response/Temporary Abatement Measures:
Actions required to mitigate an actual or threatened release of a regulated substance in order to protect public health and safety or the environment from immediate harm. Examples: interceptor trenches, ventilation fans, excavation.

Site Assessment:
Any data acquisition and interpretation necessary to characterize the hydrogeological conditions at a site. This includes definition of the magnitude and extent of contamination, as well as contaminant fate and transport analysis. Examples: monitoring wells, direct push surveys, aquifer tests.

Engineered Wellhead Protection

Risk Assessment:
Use of risk concepts and procedures to determine target health based concentrations of contaminants in soil, water and air. Evaluations are based on PST/RBCA guidelines.

Remedial Action Plan Design:
Data evaluation or design for remedial action plan development. Examples: selection and evaluation of appropriate corrective action technology (ies) and preparation of plans and specifications.

System Installation:
Remediation system installed under engineering oversight.

Remedial Action Oversight:
System installation, operation and maintenance, under the observation and determination of general conformance with plans by a Professional Engineer.

Operation and Maintenance:
Qualified technicians perform regular and timely site visits to gather data about the remediation system. Examples: influent/effluent samples, pressure readings.

Remedial Action Evaluation:
Site data are evaluated to determine progress, efficiency and efficacy of the remediation system. Data are reviewed and system adjustments made to optimize performance.

Monitoring and Evaluation:
Data are acquired and evaluated to determine site status. Monitoring is done throughout a site's history Examples: monitoring prior to Site Assessment, monitoring to confirm closure.