{"data":{"id":"us/40-cfr-410.42","jurisdiction":"us","citation":"40 CFR 410.42","heading":"Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).","body":"(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):\nPollutant or pollutant property BPT limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (or pounds per 1,000 lb) of product\nBOD5 6.6 3.3\nCOD 60.0 30.0\nTSS 17.8 8.9\nSulfide 0.20 0.10\nPhenol 0.10 0.05\nTotal Chromium 0.10 0.05\npH (1) (1)\n1 Within the range 6.0 to 9.0 at all times.\n(b) Except as provided in paragraph (e) of this section for commission finishing operations, the following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section and attributable to the finishing of woven fabrics through simple manufacturing operations employing a synthetic fiber or through complex manufacturing operations employing a natural fiber, which may be discharged by a point source subject to the provisions of this subpart, in addition to the discharge allowed by paragraph (a) of this section.\nPollutant or pollutant property BPT limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (or pounds per 1,000 lb) of product\nCOD 20.0 10.0\n(c) Except as provided in paragraph (e) of this section for commission finishing operations, the following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section and attributable to the finishing of woven fabrics through simple manufacturing operations employing a natural and synthetic fiber blend or through complex manufacturing operations employing a synthetic fiber, which may be discharged by a point source subject to the provisions of this subpart, in addition to the discharge allowed by paragraph (a) of this section.\nPollutant or pollutant property BPT limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (or pounds per 1,000 lb) of product\nCOD 40.0 20.0\n(d) Except as provided in paragraph (e) of this section for commission finishing operations, the following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section and attributable to the finishing of woven fabrics through complex manufacturing operations employing a natural and synthetic fiber blend, which may be discharged by a point source subject to the provisions of this subpart, in addition to the discharge allowed by paragraph (a) of this subpart.\nPollutant or pollutant property BPT limitations\nMaximum for any 1 day Average of daily values for 30 consecutive days\nKg/kkg (or pound per 1,000 lb) of product\nCOD 60.0 30.0\n(e) Additional allocations equal to the effluent limitations established in paragraphs (a), (b), (c), and (d) of this section are allowed any existing point source subject to such effluent limitations that finishes woven fabrics through “commission finishing” as defined in § 410.01.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 410—TEXTILE MILLS POINT SOURCE CATEGORY","Subpart D—Woven Fabric Finishing Subcategory"],"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":"5c054b82dda52cfc6095ef8f78263ba783b087fe655afb8249e9ed6cfc78beeb","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-410.41","next":"us/40-cfr-410.43"},"notice":"GroundRules: Original legal text. Not legal advice."}