{"data":{"id":"us/40-cfr-415.302","jurisdiction":"us","citation":"40 CFR 415.302","heading":"Effluent limitations guidelines 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 and using the milk of lime process 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):\nSubpart AD—Calcium Carbonate Milk of Lime Process\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\nTSS 0.56 0.28\npH (1) (1)\n1 Within the range 6.0 to 9.0.\n(b) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart and using the recovery process from Solvay process wastes, 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):\nSubpart AD—Calcium Carbonate Solvay Recovery Process\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\nTSS 1.16 0.58\npH (1) (1)\n1 Within the range 6.0 to 9.0.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 415—INORGANIC CHEMICALS MANUFACTURING POINT SOURCE CATEGORY","Subpart AD—Calcium Carbonate Production 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":"7bd61bf876963ed79113372fc3f9c60e9d53dc269846f04c9e40066939012369","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-415.301","next":"us/40-cfr-415.310"},"notice":"GroundRules: Original legal text. Not legal advice."}