Used controlled substance

{
  "id": "MLC-T-ENV-029379",
  "term": "Used controlled substance",
  "field": "Environment",
  "term_source": "Used Controlled Substance",
  "definitions": [
    "Controlled substances that have been recovered from their intended use systems (may include controlled substances that have been, or may be subsequently, recycled or reclaimed).",
    "A used Class I or Class II compound that has been either recovered from its intended use systems (e.g., chiller, refrigerator, etc.) or has been recycled or reclaimed."
  ],
  "subject": [
    "Environmental events",
    "Air"
  ],
  "references": [
    "40 CFR 82.3 (CFR 2013)",
    "Ozone Layer Protection Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/used-controlled-substance/"
}