Your workers could be breathing dangerous levels of crystalline silica right now. Understanding your silica dust monitoring obligations under WHS Chapter 8A is the starting point. You can’t see it, smell it, or taste it — and by the time symptoms appear, the damage is done. Silica dust air monitoring is the only way to know for certain what your people are inhaling on site.
Our certified occupational hygienists conduct silica air monitoring across Australia, delivering NATA-accredited laboratory results and full compliance reports within seven working days of site attendance. Whether you’re on a construction site in Brisbane, an underground mine in WA, or a stone fabrication workshop in Melbourne, we bring the monitoring to you.
Not sure what monitoring costs? See our silica monitoring pricing guide.
What Is Silica Dust Air Monitoring?
Silica dust air monitoring — sometimes called silica air monitoring or RCS air monitoring — measures the airborne concentration of respirable crystalline silica in your workers’ breathing zones — using personal and area sampling methods validated under Australian standards — during actual work activities. It’s the legally required method for confirming that your dust control measures are keeping exposures below Australia’s workplace exposure standard of 0.05 mg/m³.
This isn’t a visual dust assessment or a general air quality check. It’s quantitative measurement using calibrated sampling equipment and laboratory-grade analytical techniques, conducted by trained professionals, producing a defensible legal record.
Our Silica Air Monitoring Process
1. Site Assessment and Work Planning
Before a single sample is taken, we review your work processes, materials, existing controls, and site layout. This ensures sampling is genuinely representative of your workers’ actual daily exposure — not a best-case snapshot.
2. Worker Selection and Briefing
We identify the workers in highest-exposure roles — those cutting, grinding, drilling, or operating closest to dust sources. Multiple workers across different tasks are typically monitored to build a complete exposure picture for your site.
3. Personal Sampling Setup
Each selected worker is fitted with a calibrated personal air sampling pump and cyclone at collar height — positioned within the breathing zone. Calibration is documented before the shift begins. Workers carry the equipment throughout their normal work activities.
4. Full-Shift Sampling
Sampling runs for a complete representative shift — typically eight to twelve hours — capturing the full range of tasks and dust-generating activities that occur on a normal working day. We don’t sample on a quiet day to get a favourable result. We sample on a day that represents how your site actually operates.
5. NATA-Accredited Laboratory Analysis
Collected filter samples are transported to our NATA-accredited partner laboratory under a documented chain of custody. Filters are analysed gravimetrically for total respirable dust mass, then by X-ray powder diffraction (XRPD) to determine crystalline silica concentration. Results are returned within seven working days.
6. Expert Report and Recommendations
Our occupational hygienist interprets the laboratory data in full context — comparing each worker’s exposure against the current WES and the incoming December 2026 WEL, calculating exposure percentages, and providing specific, actionable recommendations for any controls that need strengthening. The report is a legal compliance document — see what your monitoring report includes for a full breakdown of every required section.
What You Receive
Every silica dust air monitoring engagement delivers:
- Comprehensive written monitoring report — suitable for submission to WHS regulators
- Individual worker exposure data — TWA calculated for each monitored worker
- WES/WEL comparison — clear pass/fail assessment against the 0.05 mg/m³ limit
- Laboratory certificate of analysis — from NATA-accredited laboratory
- Calibration records — complete equipment documentation
- Control recommendations — specific, prioritised improvements where exposures are elevated
- Hygienist sign-off — by a qualified occupational hygienist for legal validity
Records must be retained for a minimum of 30 years under Chapter 8A of the WHS Regulations. We provide all documents in formats suitable for long-term storage.
Who Needs Silica Dust Air Monitoring?
Under Chapter 8A of the WHS Regulations (effective 1 September 2024), any PCBU whose workers process materials containing at least 1% crystalline silica must assess whether monitoring is required. In practice, if any of the following apply to your business, monitoring is almost certainly needed:
- Construction and civil work involving concrete cutting, grinding, drilling or demolition
- Mining, quarrying or tunnelling operations
- Stone fabrication or benchtop manufacturing
- Landscaping, civil earthworks or excavation in silica-bearing soils
- Ceramic, brick or refractory materials manufacturing
- Demolition of pre-existing concrete or masonry structures
[Internal link: See the full list of industries that require silica dust monitoring]
Serving All States and Territories
Our occupational hygienists conduct silica air monitoring assessments across:
- Queensland — construction, mining, quarrying under WorkSafe QLD and RSHQ requirements
- New South Wales — aligned with SafeWork NSW Chapter 8A obligations and Silica Worker Register requirements
- Victoria — compliant with WorkSafe VIC guidelines, including the recommended 0.02 mg/m³ target
- South Australia — under SafeWork SA crystalline silica regulations
- Tasmania — aligned with WorkSafe Tasmania’s 2024 crystalline silica requirements
- ACT — compliant with the ACT Code of Practice for Airborne Crystalline Silica 2024
[Internal link: Find state-specific silica monitoring requirements for your jurisdiction]
Frequently Asked Questions
How long does silica air monitoring take?
Personal sampling runs for a full work shift — typically eight to twelve hours. Combined with site assessment, travel, laboratory processing and report writing, most monitoring engagements are completed within two to three weeks from initial contact to final report. Laboratory results alone are returned within seven working days.
Is silica dust air monitoring the same as silica dust monitoring?
Yes. “Silica dust air monitoring”, “silica air monitoring” and “silica dust monitoring” all refer to the same process: measuring airborne respirable crystalline silica concentrations in the workplace to assess worker exposure. The terminology varies between regulators, industries and documents, but the underlying measurement methodology is identical.
How often does monitoring need to be done?
At minimum, every six months for workplaces with ongoing silica exposure risk. Additional monitoring is required at baseline, after process changes, after control updates, and following any significant incident. Full guide to silica monitoring frequency requirements
Do I need monitoring if we use wet cutting methods?
Yes, unless you can demonstrate through measurement that wet cutting controls reduce exposures below the action level. Wet suppression significantly reduces dust generation, but does not eliminate it — and the effectiveness of wet methods varies with water flow, nozzle condition, and operator technique. Monitoring confirms whether wet cutting is actually working at the required level on your site.
Can results be used across multiple regulatory jurisdictions?
Yes. Our monitoring reports are produced by certified occupational hygienists using NATA-accredited laboratories, making them valid and recognised by all Australian WHS regulators: SafeWork NSW, WorkSafe Victoria, WorkSafe QLD, SafeWork SA, WorkSafe Tasmania, WorkSafe ACT, and federal Comcare.
Book Your Silica Air Monitoring Assessment
Ready to confirm your site is compliant? Our occupational hygienists are available for rapid deployment across Australia.
We respond to all enquiries within 24 hours. NATA-accredited results guaranteed within 7 working days of sampling.
Contact us now for a fast, no-obligation quote tailored to your site size, industry, and location.
INTERNAL LINK SUGGESTIONS:
– “silica monitoring pricing guide” → /silica-dust-monitoring-cost-australia/
– “industries that require silica dust monitoring” → /silica-dust-monitoring/ (pillar)
– “silica monitoring frequency requirements” → /how-often-silica-dust-monitoring-required/
– “state-specific silica monitoring requirements” → relevant state legislation pages
– “December 2026 WEL” → /silica-wel-2026-australia-employer-guide/
IMAGE SUGGESTIONS:
– Feature image (1200×630): Clean professional banner — “Silica Dust Air Monitoring Services” with sub-text “NATA-Accredited · Certified Hygienists · 7-Day Results” on deep blue/teal gradient
– Image 2 (800×450): 6-step process infographic showing the monitoring workflow from site assessment to report delivery
