Advance Terminal Planning Study Program Criteria Document

KANSAS CITY INTERNATIONAL AIRPORT
ADVANCE TERMINAL PLANNING STUDY
PROGRAM CRITERIA DOCUMENT
DRAFT
2.5 Aircraft Deicing
Currently at KCI, aircraft are pushed back from the gate to deice. The glycol
contaminated runoff is collected in trench drains along the perimeter of each
terminal apron. Based on the apron pavement grades, the trench drains collect
runoff from a significant portion of the apron as well as the gate deicing areas.
Collection from a large area dilutes the concentration of the glycol-contaminated
runoff and also increases the capacity need of the retention basins used for initial
storage of glycol-contaminated runoff.
KCI operates in accordance with the requirements of a National Pollutant Discharge
Elimination System (NPDES) permit issued by the Missouri Department of Natural
Resources (MDNR). The NPDES permit imposes controls intended to ensure that
stormwater discharges at KCI meet applicable water quality standards. Conditions
of the permit are implemented at the Airport through a Storm Water Pollution
Prevention Plan (SWPPP). Under the terms of the permit, the Airport is responsible
to the State of Missouri for all industrial and stormwater discharges originating on
the property with the exception of the former American Airline Overhaul Base.
KCAD is currently in negotiations with the MDNR regarding the outfall permit.
The MDNR permit is a numerical limit-based permit focused on Biochemical Oxygen
demand (BOD), Chemical Oxygen demand (COD), Total Suspended Solids (TSS),
Oil and Grease (O/G), and Total Petroleum Hydrocarbons (TPH). Table 2.5-1,
MDNR Operating Requirements, summarizes the current KCI MDNR Operating
Permit.
DRAFT
In an effort to collect glycol-impacted stormwater during deicing operations at KCI,
KCAD has installed an underground drainage system that directs
glycol-contaminated runoff from the existing terminal aprons to a 2.4-million
gallon, concrete lined retention basin. At this basin the glycol concentrations are
measured to determine how the runoff should be discharged off of airport property.
Landrum & Brown Page 23
April 2013