Section 265.253 - ContainmentIf leachate or run-off from a pile is a hazardous waste, then either:
(a)(1) The pile must be placed on an impermeable base that is compatible with the waste under the conditions of treatment or storage;(2) The owner or operator must design, construct, operate, and maintain a run-on control system capable of preventing flow onto the active portion of the pile during peak discharge from at least a 25-year storm;(3) The owner or operator must design, construct, operate, and maintain a run-off management system to collect and control at least the water volume resulting from a 24-hour, 25-year storm; and(4) Collection and holding facilities (e.g., tanks or basins) associated with run-on and run-off control systems must be emptied or otherwise managed expeditiously to maintain design capacity of the system; or(b)(1) The pile must be protected from precipitation and run-on by some other means; and(2) No liquids or wastes containing free liquids may be placed in the pile.Comment: If collected leachate or run-off is discharged through a point source to waters of the United States, it is subject to the requirements of section 402 of the Clean Water Act, as amended.
45 FR 33232, May 19, 1980, as amended at 47 FR 32367, July 26, 1982