Public Notice Dobbins Air Reserve Base (Arb) Marietta

PUBLIC NOTICE Dobbins Air Reserve Base (ARB) Marietta, Georgia Completes CERCLA Fourth Five-Year Review The United States Army Corps of Engineers, Savannah District and United States Air Force have completed the fourth Five-Year Review of environmental remedies implemented at Dobbins ARB in Marietta, Georgia. This statutory Five-Year Review was conducted in accordance with the Comprehensive Environmental Response, Compensation and Liability Act and was approved by the Georgia Department of Natural Resources Environmental Protection Division (GAEPD). The purpose of a Five-Year Review is to: evaluate the implementation and performance of remedies taken at installation restoration program (IRP) sites to clean up historical impacts; and to determine if these remedies remain protective of human health and the environment. Five-Year Reviews also identify issues discovered during the review, if any, and provide recommendations to address them. This Five-Year Review evaluated the following IRP sites and their remedies at Dobbins ARB: The Aviation Gasoline Sludge Burial Site A (DP005). Due to fuel contamination of soil and groundwater from leaking tanks, the AF removed soil from this site and installed a dual vapor extraction system to remove fuel from the groundwater. Site DP005 achieved No Further Action (NFA) status in 2011 under an industrial use scenario, and post-remediation monitoring and maintenance activities confirm that no migration of benzene has occurred. The NFA determination approved by GAEPD at site DP005 currently protects human health and the environment.. The Five-Year Review site inspection confirmed land use at DP005 remains industrial. However, for the determination to be protective in the long-term, the following action needs to be taken: · Internal Air Force Administrative Land Use Controls (LUCs) shall be annotated in the base Comprehensive Planning Platform and in the base GIS/geobase systems. The Aviation Gasoline Sludge Burial Site B (DP006). Investigation at this site did not identify any evidence of contamination from reported burial of tank sludge. No contaminants from aviation fuel have been detected in groundwater above MCL; however, groundwater continues to be monitored. The No Further Response Action is Planned (NFRAP) determination approved by GAEPD at site DP006 is protective of human health and the environment. Land use is restricted to industrial use and there is no evidence of any changes in land use. The Past Fire Training Pit Area (FT002). This site was a former fire fighting training area where aviation fuel was used during training. Soil and groundwater impacts were below MCL. The site is currently used as an engine test area. The NFRAP determination approved by GAEPD at site FT002 is protective of human health and the environment. Land use is restricted to industrial use and there is no evidence of any changes in land use. The Present Fire Training Area (FT003). This site was also a past fire fighting training area where aviation fuel was used during training. Soil and concrete were removed from the site as interim remediation actions, and a cap was placed over the site. Groundwater continues to be monitored at this site. The NFRAP determination approved by GAEPD at site FT003 is protective of human health and the environment. Land use is restricted to industrial use and there is no evidence of any changes in land use. Little Lake (OT007). This site receives surface water runoff from Air Force Plant 6, and the sediments in this lake show metal and other contaminants below MCL. The NFRAP determination approved by GAEPD at site OT007 is protective of human health and the environment. Land use is restricted to industrial use and there is no evidence of any changes in land use. Former Fuel Transfer Lines (ST008). This site was a train car offload site for aviation fuel where leaks occurred. Once rail ceased to be used, the underground fuel transfer lines were removed along with the soil around them. The NFA determination approved by GAEPD at site ST008 is protective of human health and the environment. Land use is restricted to industrial use and there is no evidence of any changes in land use. Long-Term Management (LTM) inspections and groundwater monitoring will continue at each of these sites under the Optimized Remediation Contract (ORC) in accordance with the LTM Plan, and inspection results will be reported in LTM Inspection reports. A copy of the fourth Five-Year Review Report is available for public review at the AFCEC Administrative Record: https://ar.afcec-cloud.af.mil/. Use the Administrative Record ID# 633914 to perform the search for this record. Should members of the community have questions or comments about this report, or are interested in additional information, please contact Gina Rose (AFCEC/CZOM Remediation Project Manager for Dobbins ARB and Air Force Plant 6), at gina.rose@us.af.mil. 3-31-24