HazCom Compliance for Concrete Contractors
Respirable silica is the deadliest hazard in concrete work — and it comes with caustic cement, hexavalent chromium, and solvent-based sealers. This page maps each chemical, its verified OSHA exposure limit, the standards that apply, and the path to a compliant program.
Reviewed against the eCFR and OSHA Table Z-1 · last verified July 2026
respirable crystalline silica PEL, 8-hr TWA (1926.1153)
action level that triggers periodic air monitoring (1926.1153(d)(2)(iii))
per serious violation (2026 federal maximum)
specified dust controls let you comply without air monitoring
Silica is the headline — but not the only hazard
Every cut, grind, and drill in concrete releases respirable crystalline silica, a cause of silicosis and lung cancer that OSHA targets with a National Emphasis Program (1926.1153). But the same pour brings caustic cement that burns skin, hexavalent chromium that sensitizes it, and solvent-based curing compounds and sealers.
The good news: OSHA's Table 1 lets you comply with the silica standard through specified dust controls instead of air monitoring. Below: the chemicals with their verified exposure limits, the standards that apply, and a six-step path to comply.
Chemicals on a concrete job
The regulated substances concrete crews meet most, with the OSHA permissible exposure limit for each — silica and Cr(VI) from 29 CFR 1926, dust and solvents against Table Z-1.
| Chemical | Hazard | PEL (8-hr TWA) | Source |
|---|---|---|---|
| Respirable crystalline silica — cutting, grinding, mixing | Silicosis; lung cancer | 50 µg/m³ (AL 25) | 1926.1153 |
| Portland cement dust | Alkaline; dermatitis; irritant | 15 mg/m³ total · 5 respirable | 1910.1000 Z-1 |
| Hexavalent chromium (in wet cement) | Allergic dermatitis; carcinogen | 5 µg/m³ (AL 2.5) | 1926.1126 |
| Form-release agents (Stoddard solvent) | Flammable; skin & eye irritant | 200 ppm (1,150 mg/m³) | 1926.55 Table 1 |
| Curing compounds & sealers (xylene) | Flammable; CNS depressant | 100 ppm | 1910.1000 Z-1 |
Estimate exposure with the Silica Exposure Calculator or read the Table 1 control plan guide.
A slab saw-cut, step by step
One saw cut is where the silica standard, cement burns, and flammable sealers all come together. Here is how to run it compliant.
- 1
Match the saw to a Table 1 control
For a handheld or walk-behind saw, Table 1 in 1926.1153 specifies integrated water delivery or a vacuum dust collector. Pick the listed control and you comply without air monitoring.
- 2
Wear the respirator Table 1 lists
Table 1 pairs each task and duration with a respirator requirement. Follow it — cutting more than four hours a day, or without the specified control, changes the answer.
- 3
Treat wet concrete as the caustic it is
Fresh concrete is highly alkaline (pH ~12–13) and causes serious burns on prolonged contact; the hexavalent chromium in cement (5 µg/m³) drives dermatitis. Waterproof gloves and boots, and prompt washing.
- 4
Ventilate form-release and curing solvents
Form-release agents (Stoddard, 200 ppm on a jobsite) and solvent-based curing compounds and sealers (xylene, 100 ppm) are flammable — ventilate and keep them off ignition sources.
- 5
Trigger medical surveillance where required
Any worker who must wear a respirator for silica 30 or more days a year needs the medical surveillance program (1926.1153(h)).
- 6
Document it
The written silica exposure control plan, the competent person, and training — the paper trail that answers an inspector.
The standards that apply to concrete work
Silica leads, but concrete answers to several standards — here is what each requires.
Respirable crystalline silica — 29 CFR 1926.1153
The governing standard for concrete. The PEL is 50 µg/m³ (8-hr TWA) with a 25 µg/m³ action level. Most contractors comply through the Table 1 specified controls — water or local exhaust on saws, grinders, and drills — instead of exposure monitoring. A written exposure control plan and a competent person are required.
Hazard Communication — 29 CFR 1910.1200
Silica, Portland cement, admixtures, form-release agents, and curing compounds are all hazardous chemicals — each needs an SDS, a label, a place in your written program, and worker training.
Respiratory protection — 29 CFR 1910.134
Where Table 1 controls aren't feasible or exposures exceed the PEL, a respirator program is required: medical evaluation, fit testing, and training. Medical surveillance is required for anyone who must wear a respirator 30+ days a year.
Skin protection (cement burns) — PPE & General Duty
Wet concrete is caustic (high pH) and causes serious chemical burns on prolonged contact. Waterproof gloves and boots, and prompt washing, are basic controls; cement dermatitis is also driven by the hexavalent chromium in cement.
Your 6-step compliance roadmap
The order to stand up an OSHA-defensible silica and HazCom program for a concrete crew — each step linked to the free tool that does it.
- 1
Write your silica exposure control plan
Match each task (sawing, grinding, drilling, tuck-pointing) to a Table 1 control, and name a competent person to run it.
Silica Exposure Calculator - 2
Inventory the chemicals on the pour
Cement, admixtures, form-release, curing compounds, sealers — list them and pull an SDS for each.
Chemical Inventory Template - 3
Write your HazCom program
A written program per 1910.1200(e) that ties in the silica plan and the caustic-cement burn hazard.
HazCom Program Generator - 4
Label secondary containers
Decanted form-release, curing compound, and sealer each need a GHS workplace label.
GHS Label Generator - 5
Make SDS reachable on the pour
A QR code on each container opens its SDS, and the jobsite's SDS load onto the crew's phones before the pour, even where the signal drops.
SDS QR Code Generator - 6
Self-audit before OSHA does
Silica is a National Emphasis Program — run a mock audit and price your exposure before an inspector arrives.
HazCom Audit Checklist
Key takeaways
- Respirable silica is the governing hazard (50 µg/m³, action level 25) — and OSHA runs a National Emphasis Program for it.
- Table 1 in 1926.1153 lets you comply with specified dust controls instead of air monitoring.
- Wet concrete is caustic (pH ~12–13) and burns skin; the hexavalent chromium in cement (5 µg/m³) drives dermatitis.
- Medical surveillance kicks in for any worker wearing a silica respirator 30+ days a year.
- Form-release agents and solvent-based curing compounds and sealers are flammable — ventilate.
How HazComFast handles it
Built for the silica NEP, the pour, and the caustic-cement burn.
Table 1 silica controls
Match each cutting, grinding, and drilling task to its Table 1 water or exhaust control and document it — no air monitoring required.
Admixture & sealer SDS
Every admixture, form-release, and curing compound tracked with a current SDS and a GHS label.
SDS on the pour site
QR codes on silos, totes, and containers so a crew scans for the hazard before mixing or cutting.
Cement-burn readiness
Surface the caustic and Cr(VI) hazards of wet concrete and the PPE that prevents chemical burns and dermatitis.
Crew training records
Silica and HazCom training tracked for every worker, exportable for an inspector.
Inspection-ready program
Silica exposure control plan, written HazCom program, labels, and SDS access — all in one place.
Go deeper
Standards & references
Sources & verification
Written and maintained by HazComFast. Every figure here is verified against the primary source — last verified July 2026:
- ·29 CFR 1926.1153 — Respirable Crystalline Silica (Table 1)
- ·OSHA 1910.1000 Table Z-1 — Air Contaminant Limits
- ·29 CFR 1926.1126 — Hexavalent Chromium
- ·OSHA CPL 03-00-023 — Silica National Emphasis Program
General guidance, not legal advice. OSHA-approved State Plans may have requirements at least as effective as the federal standard — verify your state's rules.
Frequently Asked Questions
The 8-hour TWA PEL for respirable crystalline silica is 50 µg/m³, with a 25 µg/m³ action level (29 CFR 1926.1153). Cutting, grinding, drilling, and mixing all generate respirable silica, so it is the governing hazard for the trade.
Use Table 1 in 1926.1153 — it lists specified control methods (water delivery, local exhaust ventilation, enclosed cabs) for common concrete tasks. Follow the Table 1 control and the respiratory protection listed, and you comply without exposure monitoring.
Yes. Wet cement is highly alkaline (pH ~12–13) and causes serious chemical burns on prolonged skin contact — kneeling in fresh concrete is a classic injury. Waterproof PPE, prompt washing, and the hexavalent chromium content of cement all matter here.
OSHA requires medical surveillance for any worker who must wear a respirator for silica 30 or more days a year (29 CFR 1926.1153(h)). It includes a baseline exam, chest X-ray, and periodic follow-up.
Often, yes — Portland cement contains trace hexavalent chromium, a skin sensitizer and carcinogen (PEL 5 µg/m³, 29 CFR 1926.1126). It's a leading cause of cement dermatitis; some regions require low-chromate cement.
Yes. 1926.1153 applies whenever a task could expose a worker to respirable silica — there's no small-employer or short-duration exemption. Even a brief handheld cut needs the Table 1 control (or monitoring), and the written exposure control plan and competent person are required regardless of crew size.
Yes. Silica, cement, admixtures, form-release agents, and curing compounds are all hazardous chemicals, so you need a written HazCom program, chemical inventory, labels, accessible SDSs, and training (29 CFR 1910.1200 / 1926.59) — alongside the silica exposure control plan.
In 2026 a serious violation is up to $16,550 and a willful or repeat violation up to $165,514 — unchanged from 2025. See OSHA penalties by state for local context.
Get the Binder in Order Before the Inspector Arrives. Are You Ready?
OSHA does not give advance notice of inspections (29 CFR 1903.6). Get the binder in order before the opening conference, not during it.
Serious Violation
$16,550
per violation (max)
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