{"data":{"id":"us/40-cfr-761.395","jurisdiction":"us","citation":"40 CFR 761.395","heading":"A validation study.","body":"(a) Decontaminate the following prepared sample surfaces using the selected testing parameters and experimental conditions. Take a standard wipe sample of the decontaminated surface.\n(1) At least one uncontaminated surface. The surface levels of PCBs on the uncontaminated surface must be \u003c1 µg/100 cm 2.\n(2) At least seven contaminated surfaces.\n(b)(1) Select applicable method(s) from the following list to extract PCBs and determine the PCB concentration from the standard wipe sample collection medium: SW-846 Method 3540C, Method 3550C, Method 3541, Method 3545A, Method 3546, or Method 8082A (all standards incorporated by reference in § 761.19). Modifications to the methods listed in this paragraph or alternative methods not listed may be used if validated under subpart Q of this part.\n(2) Report all validation study surface sample concentrations on the basis of micrograms of PCBs per 100 cm 2 of surface sampled.\n(c) Following completion of the validation study, measurements from the contaminated surfaces must have an arithmetic mean of ≤10 µg/100 cm 2. If the arithmetic mean is \u003e10 µg/100 cm 2, then the validation study failed and the solvent may not be used for decontamination under § 761.79(d)(4) according to the parameters tested.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER R—TOXIC SUBSTANCES CONTROL ACT","PART 761—POLYCHLORINATED BIPHENYLS (PCBs) MANUFACTURING, PROCESSING, DISTRIBUTION IN COMMERCE, AND USE PROHIBITIONS","Subpart T—Comparison Study for Validating a New Performance-Based Decontamination Solvent Under § 761.79(d)(4)"],"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":"dd375680d79f3bafc597fa47a44c82cca3143f796b21ca314a48266d5d4990a0","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-761.392","next":"us/40-cfr-761.398"},"notice":"GroundRules: Original legal text. Not legal advice."}