The chain under US law — from the nation's desk down to the county inspector on the forecourt. Pick your level.
The national desk — EPA Master signs with evidence, EPA Staff prepares (Office of Underground Storage Tanks, Washington HQ)
Master + Staff
All 10 regional offices — each oversees its states, funds their programs, reviews their data every 6 months
Master + Staff × 10 regions
All 51 state environmental agencies — the real workhorses: registrations, inspections, cleanup (FL DEP, CA EPA…)
Master + Staff × 51 states
PR · GU · VI · MP · AS — territory programs (PR runs its own under the 1988 regs; EPA-direct elsewhere)
Master + Staff × 5 territories
One unified county desk — delegated counties like Miami-Dade DERM inspect for the state; cleanup standards stay state
Master + Staff — one landing for every county
One unified city desk — city watchtower & referrals (FL partner model); full program where the city is the regulator
Master + Staff — one landing for every city