{"data":{"id":"us/40-cfr-264.254","jurisdiction":"us","citation":"40 CFR 264.254","heading":"Monitoring and inspection.","body":"(a) During construction or installation, liners (except in the case of existing portions of piles exempt from § 264.251(a)) and cover systems (e.g., membranes, sheets, or coatings) must be inspected for uniformity, damage, and imperfections (e.g., holes, cracks, thin spots, or foreign materials). Immediately after construction or installation:\n(1) Synthetic liners and covers must be inspected to ensure tight seams and joints and the absence of tears, punctures, or blisters; and\n(2) Soil-based and admixed liners and covers must be inspected for imperfections including lenses, cracks, channels, root holes, or other structural non-uniformities that may cause an increase in the permeability of the liner or cover.\n(b) While a waste pile is in operation, it must be inspected weekly and after storms to detect evidence of any of the following:\n(1) Deterioration, malfunctions, or improper operation of run-on and run-off control systems;\n(2) Proper functioning of wind dispersal control systems, where present; and\n(3) The presence of leachate in and proper functioning of leachate collection and removal systems, where present.\n(c) An owner or operator required to have a leak detection system under § 264.251(c) must record the amount of liquids removed from each leak detection system sump at least once each week during the active life and closure period.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER I—SOLID WASTES","PART 264—STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES","Subpart L—Waste Piles"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"d1a2c5369fa36e665ef9d574aabe742306450f37769872db8fe1d44b7bef1de3","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-264.253","next":"us/40-cfr-264.255"},"notice":"GroundRules: Original legal text. Not legal advice."}