The Underground Storage Tank (UST) Soil Contamination Project consists of 17 areas of concern (AOCs) and is located on Rickenbacker International Airport property, north of the existing runway. The property was formerly part of the Rickenbacker Air National Guard Base (formerly known as the Lockbourne Air Force Base) and was transferred to the Rickenbacker Port Authority during the mid-1980s for redevelopment of an airfield. The project is a Formerly Used Defense Site (FUDS) and is being investigated by the U.S. Army Corps of Engineers (U.S. ACE).
A remedial investigation (RI) has been conducted at the 17 AOCs. These AOCs were part of the fuel distribution system. Most of the jet fuel USTs were removed prior to Ohio EPA involvement. The Ohio Department of Commerce, Bureau of Underground Storage Tank Regulation (BUSTR) is the lead state agency because they have UST clean-up authority.
The RI Report for 11 AOCs requesting no further action has been approved for 10 of the AOCs. Subsequently, AOC 1 was given a no further action determination, too.
In 2005, BUSTR began taking a more active role in oversight of the remaining six AOCs. AOCs 3, 8/9, 10, 11 and 14 have completed the Tier 2 process.
U.S. ACE plans to conduct four quarters of ground water monitoring at all of the monitoring wells because past sampling has been sporadic.
Another 51 AOCs were identified as needing investigation. A total of 23 of these AOCs require no further action and were addressed in a report that was finalized in December 2006. UST (small tanks) removals were conducted at five of these AOCs and the reports have been finalized. A site investigation was conducted at 21 of these AOCs. Seven of the 21 AOCs require additional work. The remaining two AOCs involve ordnance.
Ordnance is being investigated under a separate initiative. A site investigation was conducted in 2006. In addition to the above two AOCs, there are a few other locations that are being investigated.
Along with the ordnance, another initiative has begun to address Chemical Warfare Materiel (CWM). Test kits were received on base during World War II. It is unknown what the disposition of some of the kits were at the end of WW II. No physical investigation will be conducted but training and a public awareness meeting will be held to address the possibility of encountering CWM and what to do should CWM be found.
In 2001, a pilot test was conducted at Area of Concern (AOC) 3 using a technology called Well Injection Depth Extraction (WIDE) to remove jet fuel and ground water contaminated with jet fuel from the subsurface. The WIDE project was completed in 2007 and the entire system was removed in 2009.
Photograph 1: Installation of the prefabricated vertical wells (PVWs) for the WIDE System.
Photograph 2: PVW being laid out prior to installation.
Photograph 3: PVW after installation.
Summary date: December 2009