This notice publicizes a justification for a sole-source contract awarded to Clean Harbors Environmental Services Inc. under unusual and compelling urgency. The award covers immediate containment, capture, and disposal of jet fuel and byproducts from a severe fuel spill at Joint Base Andrews, MD. Clean Harbors was selected for its instant mobilization capability, specialized equipment, certified personnel, and existing base access. The justification is posted post-award, and inquiries may be directed to the listed contracting officers.