Test method minor change

{
  "id": "MLC-T-ENV-027866",
  "term": "Test method minor change",
  "field": "Environment",
  "term_source": "Test Method Minor Change",
  "definition": "A modification to a federally enforceable test method that:(i) Does not decrease the stringency of the emission limitation or standard;(ii) Has no national significance (e.g., does not affect implementation of the applicable regulation in this part for other affected sources, does not set a national precedent, and individually does not result in a revision to the test method); and(iii) Is site-specific, made to reflect or accommodate the operational characteristics, physical constraints, or safety concerns of an affected source.(2) Examples of minor changes to a test method include, but are not limited to:(i) Field adjustments in a test method's sampling procedure, such as a modified sampling traverse or location to avoid interference from an obstruction in the stack, increasing the sampling time or volume, use of additional impingers for a high moisture situation, accepting particulate emission results for a test run that was conducted with a lower than specified temperature, substitution of a material in the sampling train that has been demonstrated to be more inert for the sample matrix; and(ii) Changes in recovery and analytical techniques such as a change in quality control/quality assurance requirements needed to adjust for analysis of a certain sample matrix.",
  "subject": "Research",
  "references": [
    "40 CFR 65.2 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/test-method-minor-change/"
}