Environment, Federal Government, North America, Water, United States
Visualizing Contamination Supports Sound Cleanup Decisions
Complex Horseshoe Road Site Staged for Cost-Effective Remedial Action
At the complex Horseshoe Road Superfund site, definition of the lateral and vertical extent of contamination was required to support funding decisions for the remedial action. Site contamination included volatile and semi-volatile organic compounds, pesticides, polychlorinated biphenyls, dioxins and inorganic substances in soil, groundwater and sediment.
CDM Smith developed a 3D environmental visualization systems model that conceptualized the extent of contamination, guided logical construction sequencing, and supported evaluation of various scenarios to assist EPA in planning the required annual funding during the remedial action. The model’s 3D graphics helped EPA’s funding managers to visually understand the various waste streams at the site, building their confidence in the remedial design and supporting their funding decisions.
CDM Smith also worked with the U.S. Army Corps of Engineers (USACE) to develop EPA Region 2’s first-ever cost-risk register, identifying scope, schedule and risk elements that had a potential cost impact and management strategies for mitigating risks if site conditions changed. The cost-risk register prototype implemented on the Horseshoe site became the standard for other sites prior to implementation of a remedial action.
Using this model and the risk register, CDM Smith demonstrated the potential cost savings of consolidating the construction schedule and worked closely with USACE, EPA Region 2 and EPA Headquarters throughout the design phase to update the overall construction cost. This continuous updating ensured a steady funding stream and promoted the best use of available funds for the cleanup.