Hazardous Waste Program
Kansas City International Airport (MCI) Maintenance Base
EPA ID# MOD043935048
- Former Company Name: American Airlines MCI Maintenance and Engineering Base, Trans World Airlines Inc., TWA Airlines LLC.
- Type of Facility: Hazardous Waste Storage and Disposal - closing.
- Wastes Handled: Aqueous wastes (treated wastewater).
- Treatment and Disposal Methods: Land disposal - closed.
- Location of hardcopies of hazardous waste permit application, Part I and Part II Permits, modification requests, reports, etc. and supporting documents:
The City of Kansas City is performing corrective action activities and long-term monitoring and maintenance for the surface impoundments and landfill at the Kansas City International Airport (MCI) Maintenance Base under two hazardous waste permits. The status of the post-closure and corrective action activities at the facility are described below. The public can review and copy paper copies of all permits, reports and supporting documents at the agency locations above.
The Kansas City International Airport (MCI) Maintenance Base is located at 9200 N.W. 112th St. in Kansas City, Mo. The facility is owned by the City of Kansas City and previously operated by American Airlines, formerly Trans World Airlines Inc. A variety of maintenance and overhauling activities performed on aircraft frames and engines have occurred at this facility since the facility’s original structures were built in 1956. Due to the facility’s size and the variety of processes necessary to clean, service and repair various aircraft, facility operations produced a variety of hazardous wastes. The specific quantity of hazardous wastes released to the environment at this facility are not known. Some areas of concern at the facility were used to stage scrap metal and other scrap materials before being picked up by a metals salvage company. These scrap metals including lead-acid automotive batteries and empty steel/plastic drums. Additionally, the storage of petroleum fuel products at the facility has resulted in several documented fuel spills.
The facility has two closed hazardous waste surface impoundments, which were used as a final step in treating wastewater produced during the maintenance activities. The impoundments were in operation from 1972 through 1987 and treated approximately 400,000 gallons of wastewater per day. The primary constituents of the wastewaters were hexavalent chromium, cyanide, oil and grease.
The facility also has one closed hazardous waste landfill. The Ravine Area Landfill is believed to have been used from the early 1960s through 1983. The landfill was used as a disposal point for approximately 51 million cubic yards of excavated soils, construction debris, industrial waste materials (including spent degreasing solvents and sandblasting oxides) paint strippings and possibly wastewater treatment sludges.
Post-Closure and Corrective Action Status
The approved remedy for the contaminated soil and groundwater monitoring program is already in place at the facility. The groundwater monitoring program is used to determine where the contaminated groundwater is located (horizontal and vertical extent of contamination) and how fast the contaminated groundwater is moving (rate of migration) in addition to determining the effectiveness of the corrective action measures implemented at the site.
The monitoring programs were modified in August 2010, changing from a compliance monitoring to a corrective action monitoring program and changing the existing groundwater monitoring program. The changes to the groundwater monitoring program included reducing the sampling frequency from twice a year to once a year, changing the indicator parameters being analyzed and changing the number of wells included in the groundwater monitoring program.
Hazardous Waste Permit Status
The City of Kansas City is currently performing corrective action activities and long-term monitoring and maintenance for the surface impoundments and landfill at the Kansas City International Airport (MCI) Maintenance Base under two hazardous waste permits, both effective Aug. 11, 2010. The department issued the Missouri Hazardous Waste Management Facility Part I Permit. EPA issued the Hazardous and Solid Waste Amendments Part II Permit. These permits require the City of Kansas City to continue corrective action activities at the facility and post-closure care activities for the surface impoundments and landfill.
American Airlines Inc. filed an appeal on the hazardous waste permits in September 2010. The department and EPA originally issued both permits to the City of Kansas City as the “owner” and American Airlines as the “operator.” American Airlines filed a Notice of Appeal with the Administrative Hearing Commission and EPA's Environmental Appeals Board, regarding being named as the “operator” on the permits. American Airlines spent several months negotiating with the City of Kansas City about another entity assuming the role of operator. American Airlines and the City of Kansas City reached an agreement where the City of Kansas City will assume the role of operator under the permits. American Airlines filed a Notice of Dismissal on Feb. 24, 2011, voluntarily dismissing their appeal petition. The Administrative Hearing Commission dismissed the appeal, effective Feb. 24, 2011.