Dust Monitoring
PM1, PM2.5, PM10 and TSP monitoring for construction, quarries, cement, ports and industrial fence-lines, with real-time alerts and compliance reporting.
Key benefit: Dust controlled on site before it becomes a compliance issue
Monitoring & Measurement
Air Quality Monitoring
Ambient and source emissions monitoring that shows clearly how your operations affect air quality and where you stand against applicable standards.
Clear evidence of air quality performance for permits and stakeholders
Overview
Air quality monitoring is the measurement of pollutant concentrations in ambient air and in emissions from point sources such as stacks, to determine compliance with applicable standards and permit conditions. It typically covers gases such as NO2, SO2, CO, O3, H2S and VOCs, particulate matter and meteorological parameters, using continuous stations or time-limited monitoring campaigns.
Air emissions are among the most closely reviewed aspects of an industrial or infrastructure facility in Saudi Arabia. Environmental permits issued by the National Center for Environmental Compliance (NCEC), and requirements within RCJY and MODON industrial cities, commonly include conditions on ambient air quality around the site and on emissions from stacks and other point sources. Authorities, neighbouring communities and lenders increasingly expect measured data rather than estimates, and expect it to be collected with recognised methods.
Our air quality monitoring service covers both ambient air and point-source emissions. For ambient air, we design monitoring networks, select analysers and samplers for gases such as NO2, SO2, CO, O3, H2S and VOCs, measure particulates and record wind speed, wind direction, temperature and humidity. Monitoring can run as continuous fixed stations or as campaigns for baseline studies, EIA support or periodic compliance checks. For stacks and process vents, we plan and carry out emissions measurements, including flow and gas concentration, and report results on a consistent basis.
The value for your business lies in reliable, interpretable data. We apply calibration, data validation and QA/QC procedures, link concentrations to meteorology to help distinguish your contribution from background sources, and report against the standards that apply to your site. Reports are structured for submission and for internal use, so operations and HSE teams can see trends, investigate peaks and plan improvements. Where dust is the main concern, our dedicated dust monitoring service provides a more focused particulate network.
When you need this service
You may need this service when:
- Your environmental permit requires periodic ambient air quality or stack emissions reporting.
- An EIA needs baseline air quality data for the project area before approval.
- Neighbouring communities have raised odour, smoke or air quality complaints.
- You are commissioning a new stack, flare, boiler or process unit with emission limits.
- Previous reports show peaks you cannot explain or attribute to a source.
- Lenders or shareholders request measured air quality data for ESG disclosure.
What we deliver
01
Monitoring network design
Selection of station locations, parameters and averaging periods based on emission sources, prevailing winds, receptors and permit conditions, documented in a monitoring plan.
02
Continuous ambient stations
Fixed stations with gas analysers, particulate monitors and meteorological sensors, including installation, calibration, routine maintenance and remote data collection.
03
Campaign monitoring
Time-limited ambient monitoring for baseline studies, EIA support or periodic checks, using portable analysers, samplers or passive diffusion tubes as appropriate.
04
Stack emissions measurement
Planning and measurement of emissions from stacks and point sources, including sampling port review, flow measurement and gas concentration determination.
05
Data validation and QA/QC
Calibration checks, removal of invalid data, completeness review and verification of averaging, so reported values reflect actual conditions on site.
06
Compliance reporting
Reports comparing results with applicable standards and permit limits, with trend analysis, wind-direction analysis of peaks and clear recommendations.
Our approach
Scoping
We review permit conditions, emission sources, site layout, receptors and previous data to define parameters and the right mix of ambient and source monitoring.
Network design
We select monitoring locations, equipment, methods and data averaging periods, and prepare a monitoring plan for your review.
Installation or mobilisation
We install fixed stations or mobilise campaign equipment, check power, communications and safety, and complete initial calibration.
Operation
We run monitoring, carry out scheduled calibration and maintenance, and perform stack measurements according to the agreed programme.
Data validation
We validate data, review completeness, correlate concentrations with meteorology and investigate unusual readings before results are reported.
Reporting
We issue reports against applicable standards and permit conditions, and review findings and any necessary actions with your team.
Deliverables
| Deliverable | Format | Stage |
|---|---|---|
| Air quality monitoring plan | Plan with locations, parameters and methods (PDF) | Before monitoring starts |
| Calibration and maintenance records | Instrument logs and calibration certificates (PDF) | Ongoing |
| Validated air quality dataset | Averaged data with meteorology (Excel) | Monthly or per campaign |
| Stack emissions test report | Measurement report with results per source (PDF) | After each test campaign |
| Periodic air quality report | Report with tables, charts and wind roses (PDF) | Per permit reporting cycle |
| Exceedance notification | Short technical note (PDF or email) | When a validated exceedance occurs |
Regulatory context
- Environmental Law and its Implementing Regulations, including the requirements applicable to ambient air quality and air emissions.
- National Center for Environmental Compliance (NCEC) environmental permit conditions on air quality monitoring and emissions reporting.
- Royal Commission for Jubail and Yanbu (RCJY) environmental regulations for facilities in Jubail and Yanbu industrial cities.
- Air quality baseline and monitoring commitments in approved environmental impact assessments (EIA).
- Internationally recognised measurement methods for ambient air and stack emissions, selected to match permit and project requirements.
Requirements vary by activity, location and permit conditions. We confirm the applicable requirements for your project at the start of every engagement.
Industries served
Frequently asked questions
Should we use a continuous station or periodic campaigns?
It depends on your permit conditions, the variability of your emissions and how the data will be used. Continuous stations capture short-term peaks and long-term trends and are often expected for larger facilities. Campaigns suit baseline studies, EIA support and smaller sites where periodic checks are sufficient. We review your obligations and risks and recommend the option that meets them without unnecessary cost.
Which pollutants do you monitor?
Ambient monitoring commonly covers nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO), ozone (O3), hydrogen sulphide (H2S), volatile organic compounds (VOCs) and particulate matter, together with wind speed, wind direction, temperature and humidity. The final parameter list is set by your permit, your processes and the pollutants likely to be emitted, so it differs between a refinery, a cement plant and a waste facility.
Can you measure emissions from our stacks?
Yes. We plan stack emissions measurements based on the source, the pollutants of interest and the permit conditions. This includes checking sampling port location and access, measuring flow, temperature and moisture, and determining gas concentrations. Results are reported on a consistent basis so they can be compared with emission limits and with previous tests.
How do you tell our contribution apart from background pollution?
We combine monitoring at upwind and downwind locations with continuous wind data. By analysing concentrations against wind direction and time of day, peaks can often be associated with specific sources or attributed to regional background such as dust events or traffic. This analysis is included in reports and is particularly useful when responding to complaints or unexplained peaks.
Can you take over an existing monitoring station?
Yes. We inspect the station, review the analysers, calibration history and data records, and identify any equipment or data quality issues. We then propose a maintenance and calibration routine and confirm reporting arrangements. Where equipment needs repair or replacement, we explain the options so that continuity of your data record is maintained.
Related services
Environmental Monitoring
Design and delivery of multi-media environmental monitoring programmes: sampling plans, field work, laboratory coordination, data QA/QC and periodic compliance reports.
Key benefit: Defensible environmental data that keeps permit reporting on track
Environmental Impact Assessment
Screening, scoping, baseline studies, impact analysis and mitigation, prepared as an EIA report ready for authority review and follow-up comments.
Key benefit: A defensible EIA that keeps your approval path predictable
Environmental Permitting
Construction and operating permits, renewals and modifications — from permit strategy and document preparation to submission and responses to authority comments.
Key benefit: Fewer resubmissions and a clearer path to permit decisions
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