Q521. For a facility with equipment classified under 40 CFR 98.232(h)(5)-(8), is the correct methodology to conduct a leak detection survey as in 98.233(q) and use 98.233(r) to estimate emissions from sources determined to be leaking?

A521. For equipment in 40 CFR 98.232(h) other than vapor recovery compressors, the reporter should use methods in 40 CFR 98.233(q). For vapor recovery compressors if the reporter is required to or elects to conduct a leak survey of all components in gas service associated with a vapor recovery compressor, then use the LNG storage component methods in 40 CFR 98.233(q); otherwise, the reporter should use methods in 40 CFR 98.233(r) to estimate emissions from the vapor recovery compressor.