OAR 340-122-0220: Cleanup Rules for Leaking Petroleum UST Systems: Initial Response

For a suspected or confirmed release from a petroleum UST system, the responsible person must perform the following initial response actions within 24 hours: (1) Report the following releases to the Department: (a) All below-ground releases; (b) All above-ground releases to the land surface in excess of 25 gallons, or releases of less than 25 gallons if the responsible person is unable to contain or clean up the release within 24 hours; and (c) All above-ground releases to surface water that result in a sheen on the water. (2) Take immediate action to prevent any further release of the petroleum into the environment. (3) Identify and mitigate fire, explosion, and vapor hazards.