Annual Average Concentration

{
  "id": "MLC-T-ENV-001712",
  "term": "Annual Average Concentration",
  "field": "Environment",
  "definition": "1. As used in the wastewater provisions, means the flow-weighted annual average concentration, as determined according to the procedures specified in § 63.144(b). [40 CFR 63.1082 (CFR 2013)][40 CFR 63.1101 (CFR 2013)]\n\n2. As used in the wastewater provisions in § 63.1256, means the total mass of partially soluble and/or soluble HAP compounds in a wastewater stream during the calendar year divided by the total mass of the wastewater stream discharged during the same calendar year, as determined according to the procedures specified in § 63.1257(e)(1) (i) and (ii).\n\n3. As used in the wastewater provisions, the flow-weighted annual average concentration, as determined according to the procedures specified in § 63.144(b), with the exceptions noted in § 63.1330, for the purposes of this subpart.\n\n4. Used in conjunction with the wastewater provisions, means the flow-weighted annual average concentration and is determined by the procedures in § 63.144(b), except as provided in § 63.1433(a)(2).\n\n5. As used in the wastewater provisions, means the flow-weighted annual average concentration, as determined according to the procedures specified in § 63.144(b), with the exceptions noted in § 63.501, for the purposes of this subpart.[40 CFR 63.482 (CFR 2018)]",
  "references": [
    "40 CFR 63.101 (CFR 2024)",
    "40 CFR 63.1251 (CFR 2013)",
    "40 CFR 63.1312 (CFR 2013)",
    "40 CFR 63.1423 (CFR 2013)",
    "40 CFR 63.482 (CFR 2024)"
  ],
  "url": "https://mlchart.com/terminology/environment/annual-average-concentration/"
}