St. Louis, Missouri


HRP is the prime consultant for the design, coordination and implementation of demolition and environmental clean-up of a USEPA Superfund site known as the Carter Carburetor site in north St. Louis, Missouri. Automotive components were manufactured at the site from the 1920s until site operations ended in 1984.  The plant consisted of several multi-story manufacturing, testing, office, and warehouse buildings that covered more than 500,000 square feet of space and 10 acres within the City of St. Louis. Over the decades of use as a heavy industrial manufacturing plant, the structures and grounds at the site became contaminated with polychlorinated biphenyls (PCBs), trichloroethylene (TCE), asbestos, lead, chromium, and petroleum compounds. The United States Environmental Protection Agency (EPA), under the SUPERFUND Program, ordered demolition and contaminant removal activities of the Carter Carburetor Site. 

HRP has performed environmental investigations, including sampling of soil, groundwater, soil vapors, and building materials. HRP has prepared all work plans required for asbestos abatement, building demolition, excavation, engineered controls, and in situ remediation.

EPA Region 7 approved the work plans and health and safety plans for building demolition and all removal actions. The work plans and health and safety plans are specifically designed to minimize dust, protect on-site workers, and protect the public at the adjacent Boys & Girls Club, residents, and visitors in the surrounding neighborhoods.

HRP has provided Construction Remediation Management services for:

  • The selection, securing and management of specialty contractors (including preparation/enforcement of technical specification and contract documents);
  • Abatement of asbestos;
  • Removal of lead-based paint using dry-ice blasting;
  • Installation of a deep excavation shoring system;
  • Building demolition;
  • Removal of PCB contaminated soil through excavation and off-site disposal;
  • Design and installation of an engineered control;
  • Conceptual design and installation of an in situ thermal desorption and soil vapor extraction treatment system;
  • Stormwater and wastewater management; and
  • Remediation waste management.

To date, almost 60,000 tons of PCB contaminated soil and concrete debris have been transported off-site for disposal at an approved disposal facility in Kentucky.  An additional 4,600 cubic yards of asbestos impacted material, 150 cubic yards of hazardous material, and 1,260 cubic yards of special waste have also been removed from the Site.  Over 20,000 cubic yards of demolition debris containing low-level contamination, was reused on the site for backfill, which will be capped with an engineered control.

The EPA provides on site coordination of all work, and conducts real-time monitoring of airborne contaminants to provide further health and safety protection for workers and the public. Due to strict, safe on-site work practices, there have been no exceedances of airborne contaminants which would endanger the health of the public or the site workers.  As a result of the health and safety program, daily safety tailgate meetings, and close monitoring, over 200,000 hours have been logged on the Site with no lost time or recordable injuries.

Because of the close proximity to the local boys and girls club as well as local neighborhoods, HRP participated in a public outreach program where constant communication was delivered to the public.  Regular meetings were held to discuss project progress, mailers were sent out to local residents and a website was set up that provided updated project information.