Dry-Cutting Indoors With Eight Weeks to Go
Six laborers spend nine hours a day dry-cutting concrete block and tuckpointing mortar inside a partially enclosed parking structure. Two gas-powered saws run almost continuously; visible dust hangs in the air and coats the workers' shirts. The foreman hands out N95s but calls them optional because 'the dust settles.' There is no water feed on the saws, no vacuum shroud, and no air monitoring has ever been performed. One laborer, 14 years in the trade, reports a persistent cough and shortness of breath; he smokes a pack a day. Eight weeks remain on the job and the general contractor refuses to buy wet saws, saying a water hose would 'flood the deck.' The foreman asks whether he can just keep handing out respirators and finish the job.
1. Is Table 1 satisfied by handing out N95s? What does the employer actually have to do to control this exposure?
Read the worked answer
No. Table 1 is a package, not a respirator. Under §1926.1153(c)(1), Table 1 compliance means implementing the engineering controls, work practices, and respiratory protection specified for the task - and doing so relieves the employer of exposure monitoring.
For handheld power saws, Table 1 requires either an integrated water delivery system with continuous water flow at the manufacturer's rate, or a shroud with a HEPA vacuum, plus the specified respirator and work practices (no dry sweeping, no compressed air, saw not operated without the control in place). Table 1 also assumes tasks of roughly 4 hours per shift; nine hours of continuous cutting is outside that assumption and must be supplemented with exposure monitoring or upgraded respiratory protection.
This job fails Table 1 as written. The employer therefore has two lawful paths:
- Retrofit - wet saws, water suppression, or shroud-plus-HEPA, plus the correct respirator and a written exposure control plan with a competent person (§1926.1153(g)).
- Performance option (§1926.1153(d)) - a personal breathing-zone exposure assessment, then engineering and work-practice controls, then respirators, keeping the 8-hour TWA at or below the 50 µg/m³ PEL, with the 25 µg/m³ action level triggering further duties.
Hosing down a partially open deck is feasible; the GC's objection is a cost concern, not an infeasibility finding. Enclosed, visible dust with no controls is the classic citation posture.
2. Does the coughing laborer qualify for medical surveillance, and what must the employer do - and not do - about him?
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He qualifies, and the employer cannot use his smoking or his symptoms to avoid the obligation.
§1926.1153(i)(1) requires the employer to offer medical exams to employees who will be exposed at or above the action level for 30 or more days per year, or who are required to wear a respirator for 30 or more days per year. Eight weeks of dry indoor cutting with no controls almost certainly exceeds 25 µg/m³ as an 8-hour TWA, and these workers are relying on respirators daily. Both triggers are met.
The employer must:
- Offer the exam - baseline within 30 days of initial assignment, then periodic (generally every 3 years); the employer pays and provides it at a reasonable time and place.
- Ensure the exam includes work and medical history, a physical exam focusing on the respiratory system, chest X-ray read by a NIOSH-certified B Reader, and pulmonary function testing (spirometry), plus any other test the PLHCP recommends.
- Provide the PLHCP with the required information (description of duties, exposure levels, PPE used) and obtain the written opinion - which goes to the employer and the employee, and which contains no findings or diagnoses unrelated to occupational exposure.
- Retain the records and give the employee access.
What the employer must not do: treat the exam as a screening tool for removal, condition continued employment on the PLHCP's personal medical findings, or tell him his cough is 'from smoking' and close the file. The supervisor's job is to refer and abate, not diagnose.
3. The GC refuses to buy wet saws. What is the supervisor's defensible position, and what should be documented?
Read the worked answer
The foreman should not accept the choice between 'quit' and 'keep cutting dry.' There is a defensible middle position:
1. Bring the exposure down now. At minimum, a shroud with HEPA vacuum on each saw, respiratory protection with a medical evaluation and fit test (§1910.134), and prohibition on dry sweeping and compressed air. This is a stopgap, not Table 1 compliance.
2. Establish the dose. Put personal breathing-zone sampling on at least the saw operators and a helper. Without data, no one can say whether the performance option is met or whether the 30-day medical surveillance trigger applies - and the employer bears that burden, not the employee.
3. Document the control refusal. Record the date, who refused, the stated reason, and the fact that wet cutting was technically feasible. That record matters three ways: it supports a multi-employer 'controlling employer' analysis against the GC, it is powerful evidence if the employer later claims infeasibility, and it protects the foreman.
4. Escalate in writing. An internal memo to the GC and to the contractor's own safety lead, requesting a decision, is the practical move. A short email chain beats a verbal argument in every subsequent proceeding.
If nothing changes, the exposure continues and the employer is exposed on both the silica standard and the general duty clause for unrecognized hazards not covered by a specific standard.