Advance Terminal Planning Study Program Criteria Document

KANSAS CITY INTERNATIONAL AIRPORT
ADVANCE TERMINAL PLANNING STUDY
PROGRAM CRITERIA DOCUMENT
DRAFT
Storage: Currently, glycol-contaminated runoff from the terminal apron is initially
discharged into retention basins on the north side of the terminal apron adjacent to
Bogota Avenue. Additionally, a three-million gallon above-ground storage tank
(AST) is located west of the retention basins to collect glycol-contaminated runoff
from the cargo and general aviation aprons located along Taxiway B, north of the
terminal area. The runoff is stored in these facilities and analyzed for glycol
concentration to determine the proper discharge method based on the level of
glycol concentration.
A similar concept is necessary for storage of the runoff from the centralized deicing
facilities. Storage tanks are proposed to store the runoff and also assist in
maintaining higher concentrations of glycol in the runoff by preventing precipitation
from diluting the stored fluids.
Discharge: Since deicing/anti-icing fluids are chemical products that affect the
water quality of receiving waters and the aquatic communities that use those
waters, the runoff collected needs to be discharged to meet the MDNR permit
requirements and meet the requirements of Federal, state, and local environmental
jurisdictions.
There are multiple options to mitigate the higher concentrations of glycol runoff
anticipated with the centralized deicing operations, as discussed below. However, a
detailed benefit-cost analysis is necessary to identify a preferred alternative that
has the least impact on the environment and provides the most economic benefit to
the Airport.
The concentrated glycol runoff can be sold to vendors that will haul the highly
concentrated runoff directly from the storage tanks to the vendor’s facilities to be
repurposed in accordance with all environmental jurisdictions.
DRAFT
The concentrated glycol runoff can be discharged directly to the sanitary sewer
treatment plant for biochemical treatment. This would require the construction of a
dedicated line from the storage tanks to the sanitary sewer system or the
incorporation of haul trucks to transport the runoff to the treatment facility.
A pump station can be utilized to discharge metered runoff to receiving waters such
as Todd Creek. However, the higher concentrations anticipated would make
meeting the MDNR permit requirements for discharge very difficult.
On-airport anaerobic biochemical reactors can be incorporated to pre-treat runoff
prior to discharge. The bioremediation system generally consists of a glycol
contaminated stormwater collection and storage system, a bioreactor treatment
system, and a gas/heat recovery system. Many treatment plants will only accept
limited quantities of glycol-contaminated stormwater. Anaerobic systems,
depending on the airport’s discharge permit, can reduce BOD concentration levels
sufficiently to permit unrestricted disposal to a sanitary sewer treatment facility.
Landrum & Brown Page 29
April 2013