Eligible unlined CCR surface impoundment

{
  "id": "MLC-T-ENV-009245",
  "term": "Eligible unlined CCR surface impoundment",
  "field": "Environment",
  "term_source": "Eligible Unlined CCR Surface Impoundment",
  "definition": "Existing CCR surface impoundment that meets all of the following conditions: (1) The owner or operator has documented that the CCR unit is in compliance with the location restrictions specified under §§ 257.60 through 257.64; (2) The owner or operator has documented that the CCR unit is in compliance with the periodic safety factor assessment requirements under § 257.73(e) and (f); and (3) No constituent listed in Appendix IV to this part has been detected at a statistically significant level exceeding a groundwater protection standard defined under § 257.95(h).",
  "subject": "Built environments",
  "references": [
    "85 FR 53516; 40 CFR 257.53 (CFR 2021)"
  ],
  "url": "https://mlchart.com/terminology/environment/eligible-unlined-ccr-surface-impoundment/"
}