EPA Region IV
- National fast-track program that evaluated the potential for EPA contractors and research labs to work cooperatively
- Led the Ecological Risk Assessment for 15 separate AOCs (Areas of Concern)
- Multi-media Field Investigations
- Sediment Toxicity Testing
- Data Gaps Review
- Food Chain Models and Tissue Residue Assessments
Avatar led the ERA for the Cone Mills (CM) RI/FS in Greenville, South Carolina. The CM RI/FS evaluated the extent of contamination and potential impacts two Operable Units (OUs) comprised of 15 separate AOCs (Areas of Concern). Contamination from this former textile mill impacted two reservoirs, two streams, several landfills and multiple onsite disposal and spill areas. The primary contaminants of concern were arsenic, chromium, copper, lead, zinc PAHs and PCBs. This site was one of several locations selected by EPA headquarters for inclusion in a national fast-track program that evaluated the potential for EPA contractors and research labs to work cooperatively in assessing complex superfund sites.
The ERAs were separated into OU 1 (Onsite areas) and OU 2 (Offsite areas). The OU 1 ERA focused in potential impacts to the Reedy River, Langston Creek, the Reedy River Floodplain Landfill, the Northwest Reservoir, an Aeration Lagoon and a Forested Track disposal area. Small mammal, earthworm and frog tissue samples were collected to for use in food chain models and tissue residue assessments. Sediment toxicity testing (28-day Hyalella azteca) was also conducted to complete a sediment triad evaluation for Langston Creek and the Northwest Reservoir. Food chain models for both three avian and three mammalian receptors were evaluated.
Avatar provided a data gaps summary for determining site investigation needs and participated in multi-media field investigations for the site. Avatar provided support in the preparation of a Sampling and Analysis Plan and QAPP to ensure DQOs were being met.