EPA Region 10 Settles with Caldwell Industrial Airport, Caldwell, Idaho for CWA Violation
On February 1, 2021, Region 10 issued an administrative order on consent to City of Caldwell for its
Caldwell Industrial Airport in Caldwell, Idaho. The associated CAFO with a penalty of $15,000 is
currently in public notice, and will be signed final upon conclusion of the notice. Caldwell Industrial
Airport was in violation of the Industrial Stormwater General Permit. Violations include failure to
conduct quarterly inspections, failure to minimize erosion, failure to implement control measures to
miniize exposure of fueling operation to precipitation, and incomplete SWPPP. The discharge flow
from the facility travels through the following water bodies: East Caldwell Drain, Indian Creek, Boise
River, Snake River, Columbia River, Pacific Ocean. Significant portions of the discharge path is
through anodromous fish passage waters.
To return to compliance, the Respondent has made modifications to the facility to specifically address
the violations, and has agreed to modify its SWPPP. The estimated cost of implementing this
injunctive relief is $12,700. Actions taken by the facility will reduce amount of pollutants discharged
into the receiving waters. For example, total suspended solids will be reduced by about 2,170 pounds
per year.