From June 5-7, 2018, an authorized representative of the EPA conducted a compliance inspection of the subject facility (Respondent) to determine compliance with the Risk Management Plan (RMP) regulations promulgated at 40 CFR Part 68 under Section 112(r) of the CAA. Respondent's PHA was not revalidated at least every five years. This is a violation of the five-year requirement in 40 CFR 68.67(t).