Dust Management Plans

What is a dust management plan and when is it required?

A dust management plan is a structured document that identifies dust sources, sets out time-bound control measures and explains how you will handle complaints and, where required, dustfall monitoring. Under the National Dust Control Regulations, 2026 (GN R.7335), a plan must be submitted for approval by holders of prospecting, exploration, mining or production rights or permits, by anyone reclaiming historical mine dumps, by listed-activity operators whose atmospheric emission licence requires one, by controlled emitters with the potential to generate dust, and by anyone an air quality officer reasonably suspects of causing a dust nuisance. The first group had to submit by 30 May 2026, and operators with plans approved under the 2013 regulations had to submit revised plans by the same date. New operations need an approved plan before they start.

What must a dust management plan contain under the 2026 regulations?

The regulations prescribe the content: the person responsible for implementation, the surrounding land use within a 5 km radius, a description of the premises and every dust source, detailed and time-bound control measures (including for fugitive dust), a complaints procedure and complaints register, measures to prevent dust nuisance, and, where required, a dustfall monitoring programme using SANS 1137 with sampling points that cover sensitive receptors such as schools, hospitals, daycare centres, surface water and ecologically sensitive areas. Once approved, you also report monthly (or as the authority directs) on the controls implemented, complaints handled and monitoring results.

How does a dust management plan differ from an occupational hygiene survey?

An occupational hygiene survey measures worker exposure to airborne dust at the breathing zone and compares it to occupational exposure limits (OELs). A dust management plan is broader — it covers all dust sources on the site, their impact on workers, communities and the environment, and the control strategy for each. The hygiene survey data feeds into the plan's risk evaluation, but the plan is the management document, not the measurement document. We recommend both: the survey gives you the data, the plan gives you the strategy.

What dust sources do you typically identify on a mining operation?

Common sources include drilling (respirable silica dust), blasting (instantaneous high-volume dust), hauling on unpaved roads (the largest source of fugitive dust on most mines), crushing and screening (mechanical dust generation), conveyor transfer points, stockpile wind erosion, loading and tipping, and windblown dust from exposed areas. Each source requires a different control approach — water suppression on haul roads, dust extraction at crusher discharge, enclosure of transfer points, and chemical suppressants or revegetation on inactive stockpiles.

What controls does the plan typically recommend?

We apply the hierarchy of controls: elimination (e.g. scheduling dusty work during wet weather or low-wind periods), engineering controls (enclosure, local exhaust ventilation, water sprays, fogging systems, conveyor covers, road treatment with chemical suppressants), administrative controls (speed limits, work scheduling, housekeeping standards, training), and PPE (respiratory protection as a last resort for residual exposure). The plan specifies which control applies to which source, who is responsible, and how often it must be checked.

How does the plan address crystalline silica dust specifically?

Crystalline silica (quartz) dust is a particular concern because it causes silicosis, a progressive and irreversible lung disease. For workplaces under the OHS Act, the Regulations for Hazardous Chemical Agents, 2021 set an occupational exposure limit of 0.1 mg/m³ (respirable, 8-hour TWA) for crystalline silica as quartz or cristobalite. For mines, GN R.6053 of 28 March 2025 lowered the limit under the mine health and safety regulations to 0.05 mg/m³. The plan identifies sources of silica dust (drilling, crushing, dry cutting of concrete or stone), specifies wet methods or dust extraction as primary controls, and triggers medical surveillance (chest X-ray, lung function testing) for workers with significant exposure. Silica dust management is not just a compliance issue — it is a disease prevention priority.

Do you include community dust impact in the plan?

Yes, and under the 2026 regulations it is mandatory content. The plan must identify sensitive receptors, include a complaints procedure and register, and, where the authority requires it, a dustfall monitoring programme. Dustfall is measured with SANS 1137, which replaced the old ASTM D1739 method, and compared with 600 mg/m²/day in residential areas and 1,200 mg/m²/day in non-residential areas, averaged over 30 days, with no more than two exceedances a year in non-consecutive months. NEMA Section 28 still imposes a general duty of care on top of this. A plan that only addresses worker exposure and ignores the fence line is not defensible.

How often should a dust management plan be reviewed?

The plan should be reviewed at least annually, and whenever there is a significant change in operations (new equipment, new material, expanded footprint), after a dust-related incident or complaint, and after any monitoring data shows a control is not performing as expected. A plan that sits on a shelf for three years is not a management plan — it is a document. We build review triggers into the plan itself.

From reactive to proactive

Under the 2013 regulations, most operations only needed a dust management plan after a dustfall exceedance or a written notice from an air quality officer. That changed on 31 March 2026. The new regulations name who must have an approved plan regardless of their monitoring history: holders of prospecting, exploration, mining or production rights and permits, anyone reclaiming historical mine dumps, listed-activity operators whose atmospheric emission licence requires a plan, controlled emitters that can generate dust, and anyone an air quality officer reasonably suspects of causing a dust nuisance.

The first three groups had 60 days to submit, which set the deadline at 30 May 2026. Operators whose plans were approved under the 2013 regulations were not exempt; they had to submit revised plans aligned with the new rules within the same window. New operations now need an approved plan before they start.

What the plan must contain

The content is now prescribed. A plan must name the person responsible for implementation, describe land use within a 5 km radius, describe the premises and every source of dust, and set out detailed, time-bound control measures, including for fugitive dust. It must include a complaints procedure and complaints register and measures to prevent dust nuisance. Where the authority requires it, it must also include a dustfall monitoring programme with enough sampling points to cover sensitive receptors such as schools, hospitals, daycare centres, surface water and ecologically sensitive areas.

For listed activities, the approved plan is incorporated into the atmospheric emission licence, so a weakness in the plan becomes a licence condition you are measured against.

Monthly reporting and the SANS 1137 switch

Approval is not the end of it. Implementation reports are now due monthly, or at the interval the authority sets, and must cover the dust controls actually implemented, how complaints were handled and, where required, the dustfall monitoring results.

The measurement method has also changed. Dustfall is now collected and measured using SANS 1137 instead of ASTM D1739:1970, and operations with existing approved plans were given no more than six months from commencement to transition, which runs to the end of September 2026. The limits themselves have not moved: 600 mg/m²/day in residential areas and 1,200 mg/m²/day in non-residential areas, averaged over 30 days, with no more than two exceedances a year in non-consecutive months.

Fence-line dust and worker dust are different problems

The dust control regulations deal with dust leaving your site. They say nothing about what your workers breathe, which falls under different law. For workplaces under the OHS Act, the Regulations for Hazardous Chemical Agents, 2021 set a respirable crystalline silica limit of 0.1 mg/m³. For mines, GN R.6053 of 28 March 2025 lowered the equivalent limit to 0.05 mg/m³.

A plan built only around dustfall buckets can look compliant while crusher operators are overexposed to silica, and a plan built only around personal sampling can miss the complaint that brings an environmental inspector to the gate. We write plans that cover both, and link each control to the source it manages.

If you are late or unsure whether you are covered

If your operation falls into one of the named categories and you have not submitted a plan, or you are still relying on a plan approved under the 2013 regulations, treat it as an open compliance gap rather than waiting for a complaint or a notice. The practical order is: confirm which category you fall under and which authority your plan goes to (the municipal air quality officer, or your licensing authority for listed activities), build the plan to the prescribed content, set up the complaints register and reporting cycle, and move any dustfall monitoring onto SANS 1137. We can help with each step, and our accredited partners handle any sampling and analysis that needs an accredited provider.