10 free CHMM practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CHMM Practice Test 10Tutor mode
Question 1 of 10
Planning for Materials with Hazards
A facility in an attainment area plans a change that is a major modification under the Prevention of Significant Deterioration (PSD) program. Under the federal regulations, when must the PSD permit be obtained?