Site Report: ADOTPF - McGrath Airport Maintenance Station
We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.
A 3,000-gallon diesel underground storage tank (UST) (Tank 1), a 500-gallon used oil UST (Tank 2), and a 1,000-gallon diesel UST (Tank 3) were removed in June 1999 by Shannon & Wilson, Inc. Samples collected from the Tank 1 and 3 excavations contained diesel range organics (DRO) up to 15,900 parts per million (ppm). Concentrations of benzene, toluene, ethyl benzene, and xylenes (BTEX) were below reporting levels. Samples also contained 4.05 ppm arsenic and 86 ppm naphthalene. Samples collected from the Tank 2 excavation contained DRO up to 21,400 ppm and residual range organics (RRO) up to 43,500 ppm, the stockpiled material contained up to 321 ppm DRO and 8.04 ppm arsenic and was used as backfill. Approximately 50 cubic yards of material were removed from the excavations of Tanks 1 and 3 and stockpiled in a storage cell constructed on-site. The stockpiled material contained above cleanup levels of gasoline range organics (GRO), DRO, benzene, and ethylbenzene. A drum of water and sludge that was extracted from the tanks is also temporarily stored on site. Tanks 1 and 3 were reportedly in fine condition with minimal corrosion, while Tank 2 was reported to have a split along one end, which was assumed to be the source of the associated contamination. The full extent of contamination is not known at this time and is likely to be migrating with the groundwater toward surrounding watersheds or the village water system, approximately one mile from the excavation site. Groundwater was not encountered in the excavation which was 12 feet below ground surface. The Village water system is about one mile from the site and is a surface water system. However, private wells may exist in the vicinity of the site. Associated piping for the UST were disconnected and left in place. The length of the piping was not investigated.
There are no documents for this site report.