Underground Injection

{
  "id": "MLC-T-ENV-029046",
  "term": "Underground Injection",
  "field": "Environment",
  "definition": "1. Subsurface emplacement of fluids through a bored, drilled or driven well; or through a dug well, where the depth of the dug well is greater than the largest surface dimension. (See also “injection well”.)\n\n2. Technology of placing fluids underground in porous formations of rocks, through wells or other conveyance systems. The fluids may be water, wastewater, or water mixed with chemicals. Regulations for disposing of waste this way vary depending on type of waste. RCRA hazardous waste is placed in highly regulated (Class 1) wells.\n\n3. Well injection.[40 CFR 270.2 (CFR 2018)][40 CFR 146.3 (CFR 2018)]\n\n4. The technology of placing fluids underground in porous formations of rocks, through wells or other conveyance systems. The fluids may be water, wastewater, or water mixed with chemicals. Regulations for disposing of waste this way vary depending on type of waste. RCRA hazardous waste is placed in highly regulated (Class 1) wells.",
  "subject": "General environmental",
  "references": [
    "40 CFR 260.10 (CFR 2013)",
    "Report on the Environment (ROE) Glossary",
    "40 CFR 144.3 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/underground-injection/"
}