Continuous Emissions Monitoring Systems (CEMS) Solutions

Traditional CEMS generally refers to certified systems that continuously measure regulated pollutants in exhaust or stack applications. On this page, “CEMS-style” describes Well Checked's continuous field-monitoring workflow for upstream sites; it does not claim traditional stack-CEMS certification or automatic EPA approval. Zensory.ai™ combines long-wave infrared optical gas imaging, acoustic abnormal-sound detection, video, and edge computing to support methane-event detection, operational response, and documented reporting workflows.

COMS typically refers to Continuous Opacity Monitoring Systems, which measure opacity or visible particulate-related emissions in exhaust streams. CEMS is broader and measures specific pollutant concentrations, flow, duration, and related emissions data. In oil and gas applications, Well Checked Systems focuses on CEMS-style methane detection, validation, and quantification rather than simple opacity monitoring.

CEMS directly measures emissions using sensors and monitoring equipment, while PEMS, or Predictive Emissions Monitoring Systems, estimates emissions using process data, models, and operating parameters. CEMS is often preferred when operators need measurement-based, event-level records. Well Checked Systems combines continuous sensor data with AI validation and Zentinal IQ™ quantification to produce defensible emissions information from actual field observations.

Well Checked Systems' continuous methane monitoring workflow is built around Zensory.ai™, which combines high-resolution video, long-wave infrared optical gas imaging, acoustic equipment monitoring, and edge AI. Zentinal Core™ detects and validates fugitive events while suppressing false alarms. Zentinal IQ™ then quantifies duration, volume, and rate, creating documented event records for compliance logs, ESG reporting, state agency submissions, and operational decision-making.

Well Checked Systems structures data to support operator reporting under 40 CFR Part 60 Subpart OOOOb when the specific alternative method and monitoring plan are EPA-approved and applicable plan requirements are met. The platform also supports state emissions inventories and ESG frameworks by maintaining continuous records, high-resolution event reconstruction, and quantified methane duration and volume data.

Many deployments begin with a pilot program across a defined group of sites. The process includes site selection, hardware deployment, AI Site Learning for roughly two days per site, validated alert monitoring, and proof-of-value reporting. Pilot deliverables can compare current pumper-route or LDAR inspection costs against detected events, methane loss, response timing, and scale-up economics.

Validated fugitive-event alerts can be delivered through the Well Checked Dashboard, email, text, and SCADA integration via published API. Well Checked Systems also provides response-workflow templates, dispatch runbooks, and alert-tuning support. The goal is to help operators acknowledge, dispatch, and mitigate validated methane events within 24 hours where rapid response is operationally feasible.

Pricing is available on request and depends on site count, deployment scope, sensor configuration, reporting needs, and whether the operator begins with a pilot or full multi-site rollout. Cost evaluation often compares CEMS against quarterly LDAR programs, pumper-route site visits, methane loss, vehicle-mile exposure, EPA fine risk, and internal ESG reporting workload.