Siting criteria for on-site and off-site hazardous waste treatment and storage facilities in the City shall be as set forth in Table 1.
TABLE 1
TUKWILA SITING CRITERIA FOR HAZARDOUS WASTE TREATMENT AND STORAGE FACILITIES
CRITERIA
ON-SITE
As defined in TMC § 18.06.420
OFF-SITE
As defined in TMC § 18.06.415
Structural Stability
 
 
Unstable slopes/soils
200 feet
X
Coastal flooding
X
X
Surface Water Quality Protection
 
 
Proximity to nearest surface water
M
1/4 mile
FEMA 100-year flood zone
X
X
Shorelines of statewide significance
M
1/2 mile
Protection of Domestic Water
 
 
Watersheds
1/2 mile
1/2 mile
Distance to ground water intake
1/4 mile
1/2 mile
Air Quality Protection
 
 
Ambient air quality
M
M
Sensitive Area Protection
 
 
Threatened and endangered species
X
X
Wetlands
X
1/4 mile
State shorelines
M
X
Parks and recreational areas
X
1/4 mile
Archaeological and historic areas and national monuments
X
1/4 mile
Transportation Routes
 
 
Traffic flow and capacity*
M
M
Safety standards for transport routes
M
M
Adjacent Land Use Considerations
 
 
Buffer zone
M
200 feet
Minimum distance
 
 
from residential zones/ residences
750 ft/
1/2 mile/
Motels and hotels
100 feet
500 feet
Minimum distance from occupied structures
100 feet
1/2 mile
Agricultural lands/ agricultural zone
500 feet
500 feet
Public gathering place
750 feet
750 feet
Host Community Considerations
 
 
Utilities and public services
M
M
Costs for emergency services
M
M
Key:
X
=
A proposed facility is prohibited from siting under this criterion. 
M
=
Mitigation measures required to site in this area.
*
=
Hazardous substance land uses shall be prohibited from using traffic routes which pass through residential zones. 
In the event that Tukwila’s hazardous waste siting criteria conflict with development criteria of specific zoning districts or siting criteria to be developed and adopted by the State of Washington, the more restrictive standard shall apply.
(Ord. 1489 § 4, 1988)