This smog checklist is used by smog technicians to record the measured vehicle emissions and indicate if they are within acceptable levels according to regulations. Indicate measured Hydrocarbons (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx) to see if the vehicle passed or failed the smog check.
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About author
Mitti (by SafetyCulture) is the operations system for every site, shift and standard. Trusted by over 80,000 organisations, Mitti brings your people, operational data and workflows into one operating picture. From the frontline to the boardroom, it gives everyone a clear understanding of what's happening, highlights what needs attention and recommends what to do next. Every inspection completed, issue raised and action taken becomes intelligence your teams can use to improve every day.
Keep smog compliance consistent and avoid permit violations
Where emissions monitoring gaps create compliance violations
Without a consistent process, small inconsistencies in emissions tracking compound into serious compliance issues that are hard to resolve under inspection pressure.
Calibration gaps: Steps logged inconsistently between shifts create unreliable baseline data.
Undetected defects: Equipment faults go unnoticed until they trigger a compliance violation.
Scattered documentation: Audit records are hard to assemble under pressure without a standard format.
Slow response times: Inconsistent monitoring delays corrective action and raises compliance risk.
What this smog check checklist covers for EHS teams
This checklist gives EHS teams in manufacturing a consistent format for capturing emissions readings, verifying sensor calibration and logging corrective actions at every inspection point.
Each section covers pre-inspection setup, diagnostic scan results and corrective action assignment so your compliance record is complete and audit-ready.
Verified calibration: Confirm sensor accuracy and calibration status with every inspection.
Tracked corrective actions: Log issues on the spot and monitor them through to resolution.
Prepared documentation: Audit records are ready in advance so compliance checks don't catch you off guard.
Consistent diagnostic records: Capture scan results in a standard format so every inspection is comparable and traceable.
The compliance gains from a consistent smog check process
EHS teams that run structured smog check processes consistently report fewer compliance violations, faster audit preparation and more reliable emissions data across the facility.
When every technician follows the same inspection format, your monitoring record becomes a credible source of evidence rather than a fragmented collection of handwritten notes.
Your facility stays ahead of regulatory requirements, your team works with greater confidence and you reduce the risk of fines and unplanned downtime from emissions failures.
Build a consistent smog compliance routine and give your facility a repeatable process for emissions testing.