Hill Air Force Base Basewide Monitoring and Operations and Maintenance
As a key subcontractor, AEEC is a part of the Hill AFB Performance Based Remediation (PBR) team with EA and CH2M Hill. AEEC is providing Basewide Monitoring and Operations and Maintenance Services. AEEC is providing services for the required monitoring and operational reports for compliance with applicable Federal Facility Agreements (FFAs) and Records of Decision (RODs) for Hill AFB restoration sites. The work includes basewide groundwater monitoring (OUs 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12; A); all compliance monitoring of treated effluent from all remediation systems; underground storage tank (UST) monitoring including free product removal at sites 454 and 870; remediation system O&M at OUs 1, 2, 4, 5, 6, 8, and 12; CERCLA landfill cap O&M at OUs 3, 4, and 7; and management of the Soil Management Pad and Heavy Equipment Decontamination Pads. Project requires sample collection and reporting for monitoring points; sampling of media, extraction well rehabilitation, monitoring point maintenance, optimization of groundwater remediation systems treating LNAPL, DNAPL, and dissolved organic contaminants; monthly system performance reports, annual reports, compliance reporting, and updates to documents related to the project monitoring and measurement requirements for Operable Units 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and A.
Former Stead Air Force Base Solvent Site Operable Unit 1
Since 2004, AEEC has provided CERCLA Remedial Action Project Coordinator services to the Appropriate Parties of the Stead Solvent Site Operable Unit 1. The Stead Solvent Site is located on the premises of a former Air Force Base near Reno, Nevada, which is now being used as a municipal general aviation airport. The purpose of the Remedial Action is to address chlorinated solvents that have impacted the soil and groundwater of the site and threaten water production wells associated with the local drinking water supply. The remedial action technologies employed at the site include source area remediation by soil vapor extraction and dual phase extraction and plume containment by groundwater extraction and phytoremediation barrier.
AEEC is serving as the Project Coordinator of record on behalf of the site’s Appropriate Parties. As defined in the Consent Decree, the primary role of the project coordinator is to ensure that all day-to-day site activities and actions are compliant with the CERCLA process, the terms of the Consent Decree, and the site’s Record of Decision (ROD). The Project Coordinator is also to represent the Appropriate Parties to the primary governing regulatory body, consisting of the Nevada Division of Environmental Protection (NDEP).
AEEC is also providing ongoing engineering, investigative, O&M, long term groundwater monitoring, and environmental services related to the operation of the remedial action components, which were activated in 2005. System operational services require compliance with established regulations and permits including an air emission permit, a sewer discharge permit, and a water appropriations permit. Compliance with permits requires self-monitoring sampling, periodic system inspection by regulating entities, record keeping, data consolidation and calculations, and quarterly and annual reporting. Disposal of investigation derived waste and remedial action process wastes are managed in compliance with local, state, and federal waste disposal guidelines. All site activities are performed compliant to an NDEP-approved Field Sampling Plan and Quality Assurance Project Plan.
The Consent Decree, ROD, quality assurance plan, monitoring plans, permit requirements, and all other relevant requirements documentation were thoroughly reviewed to identify all site compliance requirements. The requirements were then summarized in the form of concise SOPs and sampling schedules to concisely list the operational and compliance requirements that are relevant to the day-to-day operations at the site. Project Coordination and O&M costs have decreased by an average of 8% annually due to system optimization and improved efficiency of service.