Upset

{
  "id": "MLC-T-ENV-029255",
  "term": "Upset",
  "field": "Environment",
  "definition": "1. An exceptional incident in which there is unintentional and temporary noncompliance with the permit limit because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.\n\n2. An exceptional incident in which there is unintentional and temporary noncompliance with categorical pretreatment standards because of factors beyond the reasonable control of the IU. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.\n\n3. An exceptional incident in which there is unintentional and temporary noncompliance with technology-based permit effluent limitations because of factors beyond the reasonable control of the permittee. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation.",
  "subject": "Water",
  "references": [
    "National Pollutant Discharge Elimination System (NPDES) Glossary",
    "40 CFR 403.16(a)",
    "NPDES Permit Writers Manual Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/upset/"
}