Anoxic limestone drain

{
  "id": "MLC-T-ENV-001764",
  "term": "Anoxic limestone drain",
  "field": "Environment",
  "term_source": "Anoxic Limestone Drain",
  "definition": "A type of passive treatment system consisting of a trench of buried limestone into which acid water is diverted. Dissolution of limestone increases pH and alkalinity.",
  "subject": "Environmental technologies",
  "references": [
    "EPA Abandoned Mine Site Characterization and Cleanup Handbook; Appendix A: Acronym List and Glossary of Mining Terms at http://www.epa.gov/superfund/policy/remedy/pdfs/appendix.pdf"
  ],
  "url": "https://mlchart.com/terminology/environment/anoxic-limestone-drain/"
}