OSHA Silica in General Industry: What 1910.1053 Requires (2026 Guide)

Which OSHA silica rule applies, and what does 1910.1053 require?

Short answer: construction work runs on 1926.1153 and everything else on 1910.1053. Both set a 50 µg/m³ PEL and a 25 µg/m³ action level. The construction rule offers Table 1, a list of eighteen tasks with prescribed controls that removes the need to assess exposure at all. General industry has no equivalent, so exposure assessment, a written control plan, and medical surveillance at 30 days a year above the action level are all unavoidable.

OSHA issued both silica rules together in March 2016, and they are usually discussed as one. They are not. The construction rule is famous for Table 1 and gets almost all the attention; the general industry rule covers foundries, brick and concrete products, glass, pottery, engineered stone countertop fabrication, abrasive blasting and railroad work, and it is the harder of the two to comply with precisely because it offers no shortcut.

Why this matters.
Silicosis is irreversible and it kills. The accelerated form seen in engineered-stone countertop fabrication can appear within a few years of first exposure, in workers in their thirties. The 2016 rule halved the effective limit and added surveillance that had never existed for this hazard, and the trigger for that surveillance is the action level — half the legal exposure limit — at thirty days a year. An employer watching only the PEL will miss it.

The routing question: which rule governs this job

The two numbers, and which one actually triggers the programme

Almost every compliance failure on this standard is the same failure: watching the PEL and missing the action level. Surveillance, assessment and periodic monitoring all key off 25, not 50.

What the general industry employer owes

1. Assess exposure for each employee who is or may reasonably be expected to be exposed at or above the action level — by the performance option, using any combination of air monitoring and objective data sufficient to characterise exposure accurately, or by scheduled monitoring with initial and then periodic sampling.
2. Control with engineering and work practices first. Where they cannot get exposure to or below the PEL, they must still be used to reduce exposure to the lowest feasible level and then supplemented with respiratory protection.
3. Establish regulated areas wherever exposure exceeds or can reasonably be expected to exceed the PEL, demarcated and signed, with access limited.
4. Write and maintain an exposure control plan describing the tasks, the controls and work practices for each, the respiratory protection used, and the housekeeping measures — reviewed and evaluated for effectiveness at least annually.
5. Restrict housekeeping methods. No dry sweeping or dry brushing where it could contribute to exposure and a wet or HEPA-vacuum method is feasible; no compressed air for cleaning unless paired with capture ventilation or no alternative is feasible.
6. Run a respiratory protection programme under 1910.134 wherever the standard requires respirator use.
7. Offer medical surveillance at no cost to every employee exposed at or above the action level for 30 or more days per year.
8. Train under 1910.1200 with silica addressed as a hazardous chemical, and ensure employees can demonstrate knowledge of the health hazards, the tasks that cause exposure, the controls, the contents of this standard and the purpose of the medical surveillance programme.
9. Keep records of air monitoring data, objective data and medical surveillance under 1910.1020.

The medical surveillance clock

Why construction gets a shortcut and you do not

Table 1 in the construction rule exists because construction silica work is dominated by a small number of highly repeatable tasks — a walk-behind saw, a handheld grinder, a jackhammer — whose exposure profile OSHA could characterise in advance. Specify the water or vacuum control, the operating conditions and the respirator, follow it fully, and no exposure assessment is required.

General industry silica exposure is not like that. A foundry, a glass plant and a countertop shop produce silica in different ways at different concentrations, and no generic control list would characterise them. So the general industry rule keeps the assessment duty and gives the employer two routes to discharge it. The practical consequence: a general industry employer cannot copy a construction contractor’s Table 1 compliance plan and expect it to work — and the OSHA 29 CFR 1926.1153 Silica Standard guide covers the construction side in its own right.

Frequently asked questions

What is the OSHA PEL for respirable crystalline silica?

50 µg/m³ as an 8-hour time weighted average, with an action level of 25 µg/m³. The same two numbers apply in general industry under 1910.1053 and in construction under 1926.1153. What differs is everything around them.

Which silica standard applies to my work?

1926.1153 if the work is construction; 1910.1053 for general industry and maritime. The general industry rule carves out construction tasks that appear on the construction Table 1 where the task will not be performed regularly in the same environment and conditions — so a one-off construction-type task inside a manufacturing plant does not pull you into the general industry rule by accident.

Is there a Table 1 in the general industry silica standard?

No, and that is the defining difference. Construction’s Table 1 pairs eighteen common tasks with specified controls; follow one fully and you owe no exposure assessment. General industry has no such list, so every employer who may have exposure at or above the action level must assess it, by performance option or scheduled monitoring.

What is respirable crystalline silica?

Quartz, cristobalite and tridymite, in the respirable size fraction — the particles small enough to reach the gas-exchange region of the lung. Silica is not hazardous as a bulk material; it becomes hazardous when cutting, grinding, crushing or drilling breaks it into respirable dust.

What is the difference between the performance option and scheduled monitoring?

Two routes to the same duty. The performance option lets the employer characterise exposure using any combination of air monitoring data or objective data sufficient to accurately characterise employee exposures. Scheduled monitoring requires initial monitoring, then periodic monitoring at intervals that depend on the result — more often as the result rises.

When must a regulated area be established for silica?

Where an employee’s exposure exceeds, or can reasonably be expected to exceed, the PEL. The regulated area must be demarcated, marked with the warning sign the standard prescribes, and access limited — the signage side is covered in OSHA safety sign requirements.

Does general industry silica require a written exposure control plan?

Yes. Under 1910.1053(f)(2) the plan must describe the tasks involving silica exposure, the engineering controls, work practices and respiratory protection used for each, and the housekeeping measures used to limit exposure. It must be reviewed and evaluated for effectiveness at least annually and made available to each covered employee.

When is silica medical surveillance required?

For each employee occupationally exposed at or above the action level for 30 or more days per year, at no cost and at a reasonable time and place. That threshold uses the action level of 25 µg/m³, not the PEL — so surveillance is owed at half the legal exposure limit.

What does a silica medical examination include?

A baseline examination within 30 days of initial assignment unless one meeting the standard has been given in the last three years, consisting of a medical and work history, a physical examination with emphasis on the respiratory system, a chest X-ray interpreted and classified under the ILO system, a pulmonary function test, testing for latent tuberculosis infection, and anything else the physician or licensed health care professional considers appropriate.

How often are silica medical examinations repeated?

At least every three years, or more frequently if the PLHCP recommends it. The periodic examination repeats the baseline procedures except the latent tuberculosis testing, which is an initial-examination item only.

Can I use dry sweeping to clean up silica dust?

Not where it could contribute to employee exposure, unless wet sweeping, HEPA-filtered vacuuming or other methods that minimise exposure are not feasible. The same paragraph bars compressed air for cleaning clothing or surfaces unless it is used with a ventilation system that effectively captures the dust cloud, or no alternative method is feasible.

Does the silica standard require respirators?

Only where engineering and work practice controls cannot keep exposure at or below the PEL, and during the periods the standard specifies. Where they are required, the employer must run a full programme under 1910.134 — medical evaluation, fit testing and a written programme. See best respirator for silica dust.

What is silicosis?

An irreversible fibrotic lung disease caused by inhaling respirable crystalline silica. It has chronic, accelerated and acute forms, and silica exposure also raises the risk of lung cancer, chronic obstructive pulmonary disease and kidney disease. The chest X-ray and pulmonary function testing in the surveillance programme exist to detect it early, because there is no treatment that reverses it.

Does the general industry rule have a competent person requirement?

Not in the same named form as construction, which requires a competent person to make frequent and regular inspections of job sites, materials and equipment. General industry places the equivalent duties on the employer through the written exposure control plan and its annual review rather than on a designated individual.

How long must silica records be kept?

Air monitoring data, objective data and medical surveillance records in accordance with 1910.1020 — medical records for the duration of employment plus 30 years. The monitoring record must include the date, task, sampling and analytical methods, the number and results of samples, the identity of the laboratory, and the type of respiratory protection worn.

Is engineered stone covered by 1910.1053?

Yes. Fabricating and finishing engineered or artificial stone countertops is general industry work, and the material can be far higher in crystalline silica content than natural stone. The cluster of accelerated silicosis cases in countertop fabrication is the clearest recent demonstration of what this standard is for.

Do abrasive blasting operations fall under the silica standard?

Where the abrasive or the substrate contains crystalline silica, yes — and 1910.94 adds its own ventilation and blasting-respirator requirements on top. Substituting a non-silica abrasive removes the silica duty but not the ventilation one; see how to sandblast safely.

How does the silica PEL compare to older limits?

It is a substantial tightening. Before the 2016 rule, general industry silica ran on a formula-based limit in Table Z-3 of 1910.1000 that worked out around 100 µg/m³ for most quartz exposures. The current 50 µg/m³ PEL halved it and added the programme requirements that had never existed — see how Table Z and the PEL math work.

Further reading on this site

• OSHA 29 CFR 1926.1153 Silica Standard — the construction rule and its Table 1, in full.
• best respirator for silica dust — filter and facepiece selection against the concentrations this work produces.
• dust extractor vs shop vac — why HEPA classification decides whether a vacuum is a control or a dispersal device.
• how Table Z and the PEL math work — the formula-based Table Z-3 limit this standard replaced.
• how to sandblast safely — abrasive blasting, where 1910.94 stacks on top of the silica rule.
• the four asbestos work classes of 1926.1101 — the other respirable-fibre standard, structured completely differently.
• when does OSHA require a respirator — the trigger test across Subpart Z.
• OSHA lead standards compared: 1926.62 vs 1910.1025 — the other pair of rules split the same way between the two parts.
• what is a dust mask — why a nuisance dust mask is not respiratory protection for silica.
• OSHA standards index — every 29 CFR section indexed, with the general industry vs construction crosswalk.