In 1985, the Hastings Groundwater Contaminated Site (HGWCS), which is divided into seven sub-sites for investigative and remediation purposes, was placed on the National Priorities List. Because of Black & Veatch’s trusted performance with U.S. Environmental Protection Agency (EPA) Region 7, the agency requested that Black & Veatch assist in the remediation of various contaminants of concern. These included multimedia impacts (i.e., soil and groundwater), and contaminants with difficult physical or chemical properties. To assist with remediation efforts, Black & Veatch has conducted design preparation, procurement of subcontractors and provided oversight of Remedial Action (RA) construction activities. It also has assisted with ongoing monitoring and implementation of RAs.
Two of the projects Black & Veatch supported were the Colorado Avenue sub-site and the Second Street sub-site. Through coordination with multiple stakeholders, Black & Veatch provided oversight and review of the Potentially Responsible Parties (PRPs) RA for installation of a Soil Vapor Extraction (SVE) system at the source area. Three ground water treatment systems were also built along a partial length of the plume at the Colorado Avenue sub-site. In support of the project, Black & Veatch developed an innovative alternative process for complying with unilateral administrative orders by using risk-based soil gas criteria for closure of soils remediation. The result was an economically feasible approach to assessing soil contamination, thus enabling the EPA to focus future efforts on true health and environmental risks.