Primarily Engaged in Manufacturing Process

{
  "id": "MLC-T-ENV-022067",
  "term": "Primarily Engaged in Manufacturing Process",
  "field": "Environment",
  "definition": "Manufacturing, fabricating, or forging of one or more products listed in one of the nine metal fabrication and finishing source category descriptions in Table 1, “Description of Source Categories Affected by this Subpart,” where this production represents at least 50 percent of the production at a facility, and where production quantities are established by the volume, linear foot, square foot, or other value suited to the specific industry. The period used to determine production should be the previous continuous 12 months of operation. Facilities must document and retain their rationale for the determination that their facility is not “primarily engaged” pursuant to § 63.10(b)(3) of the General Provisions.",
  "references": [
    "40 CFR 63.11522 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/primarily-engaged-in-manufacturing-process/"
}