LDAR Services

Yes. EPA extended certain compliance deadlines under NSPS OOOOb and EG OOOOc in 2025 and amended flaring and net-heating-value provisions in April 2026, but fugitive monitoring, inspection, and work practice requirements remain in force. Only the provisions explicitly named in the extension rules were delayed.

OGI uses an infrared camera to visualize hydrocarbon plumes across many components quickly. Method 21 uses a portable detector to take a concentration reading at each individual component against a numeric leak-definition threshold. OGI is faster over a large site; Method 21 gives a component-level number. Which is required depends on the rule and the source type.

Frequency depends on the applicable rule, the site type, and in some cases the site's emissions profile. Well sites, compressor stations, and processing plants carry different requirements, and state programs may impose more. We confirm frequency during applicability review.

Record keeping. Missing operator qualification documentation, calibration gaps, repairs without verification resurveys, and delay-of-repair claims without contemporaneous justification. The leaks are usually found; the paperwork is usually where programs fail.

No. Detection depends on leak rate, wind, background, distance, and operator skill, and some emissions, through-valve leakage in particular, produce no external plume at all. A well-run program accounts for this rather than assuming full coverage.

Both. We design programs, execute surveys, and train operator crews to run their own.

Schedule a free consultation and IES will scope the engagement around your facilities, reporting obligations, and timeline.