Compliance

Air Emissions From Oil and Gas Operations: The Rules That Follow the Compressor

Air quality rules for oil and gas do not sit in one place. They are scattered across volatile organic compound standards, methane rules, greenhouse gas reporting, and state implementation plans. For operators and service companies, the practical question is simple: which sources count, what has to be reported or controlled, and how the inspector proves the numbers are honest.

The federal sources that apply

The Clean Air Act framework reaches well sites and compressor stations through multiple subparts. The oil and gas new source performance standards under 40 CFR Part 60 include Subpart OOOO and its successors, which set requirements for equipment leaks, pneumatic devices, and well completions. Greenhouse gas reporting under 40 CFR Part 98 requires large facilities and suppliers to report emissions each year, and the EPA compiles that data into a national inventory. Compressors, dehydrators, tanks, and pneumatic controllers all fall under these rules at different sites and thresholds. An operator who classifies the wrong source as exempt can face notice of violation and required re-reporting. The operator has to apply the correct emission factor, keep the operating data, and show the method in the event of a review.

What regulators measure and how compliance is shown

Emissions estimates are built from operating data: throughput, composition, counts of equipment, and run hours. Control devices such as flares, vapor recovery units, and enclosed combustors need operating parameters and inspection records. The operator has to be able to connect the number reported to the field record that supports it. A report without a meter reading, a pilot light log or a maintenance record is just a guess, and audits ask exactly that question. Maintenance tickets, meter logs and LDAR records are exactly the kind of structured field data tracked in OpsFlo, ticket, dispatch, timesheet, approvals and document software built for field crews.

The field records that hold the answer

Equipment inventories, inspection logs, LDAR surveys, and maintenance tickets are the raw material for a defensible air program. When those records live in different systems or do not exist in a searchable form, the audit becomes a scramble. A control room manager with real-time data and a service crew with current work records are the same system working in different places. The operator who connects those records before the audit has a stronger position than the operator who connects them during the audit.

Sources and further reading

• eCFR 40 CFR 98: GHG reporting
• eCFR 40 CFR 60.18: General compliance requirements
• eCFR 40 CFR 60.5415: Well completions and pneumatics
• EPA: Controlling air pollution from oil and gas