The Environmental Protection Agency is reimbursing five local agencies in Colorado and Utah for a spill it caused in August 2015, releasing more than 3 million gallons of toxic sludge that sullied the waterways of three states.

The EPA announced Thursday that it will be giving $90,000 in “additional reimbursements” to five agencies in the two western states for the costs they incurred in responding to the disastrous spill at the Gold King Mine in Silverton, Colo.