Key Environmental, Inc.
Excavating Drums
 
Voluntary Cleanup - PA Act 2 Program
Investigation, Site Conceptual Model, Remedy Selection and Design, CM
Remediate Site
Project Activities
  • Site Investigation
  • Final Design of Soil Cover System
  • Bid Solicitation
  • Construction Management (CM)
  • Bid Solicitation and Review
  • As-Built Documentation and Reporting
  • Operations and Maintenance
  • Groundwater Clean-up Plan
An industrial client received correspondence from the Pennsylvania Department of Environmental Protection (PADEP) threatening enforcement action with regard to recently discovered drums at a property formerly used to dispose of the Client’s waste sludge in the 1970’s. PADEP was considering requiring the removal and off-Site disposal of the waste and impacted soils, with an estimated volume of roughly 50,000 cubic yards. KEY developed a project strategy to move the site and its associated issues into the Pennsylvania’s Land Recycling Program (Act 2). PADEP agreed with the approach and dropped the threat of enforcement action. Ultimately a soil surface cover, drainage channels, and infiltration basins were constructed at the Site, and institutional controls we emplaced.
A groundwater cleanup plan was developed to address several organic compounds that were identified in samples at concentrations that exceeded Act 2 Media-Specific Concentrations for non-residential, used aquifers.  Groundwater Fate and Transport modeling was conducted to demonstrate plume stability and also to identify the viable pathways.  The property owner agreed to Land-Use and Groundwater-Use Restrictions as an institutional control.  In addition, KEY worked with the city to implement a city-wide Groundwater-Use Restriction Ordinance, to eliminate potential pathway issues associated with the adjacent City-owned properties.  A groundwater monitoring program was implemented to demonstrate attainment of the site-specific standards.  Historically declining constituent concentrations in groundwater were compared to site-specific standards for the indoor air exposure pathway.  Monitored natural attenuation was selected as the most appropriate, protective, and cost-effective remedial alternative for groundwater.
Highlights
A Release of Liability was provided for site soils, and a Release of Liability for site groundwater is anticipated in the near future.
Monitored natural attenuation was selected as the groundwater remediation alternative, as opposed to active groundwater recovery and treatment.