Industrial Hygiene
When the OSHA Inspector Asks About Your Monitoring Data, What Do You Show Them?
An OSHA hexavalent chromium citation runs $16,550 per instance. An IH baseline assessment from iSi starts at $4,050 — fixed pricing, same-day quotes, and a defensible monitoring record for the next inspection. We handle silica, hex chrome, noise, solvent vapors, and the full PEL panel across 40 states.
Industrial Hygiene Services
Field-ready IH professionals. OSHA and NIOSH methods. Complete reports with actionable recommendations — not data dumps.
Exposure Assessments
Comprehensive workplace exposure evaluations for airborne contaminants, noise, chemical agents, and physical hazards. Results benchmarked against OSHA PELs and ACGIH TLVs.
Air Monitoring
Personal and area air sampling for silica, hexavalent chromium, lead, welding fumes, solvents, and particulates. All sampling follows OSHA and NIOSH analytical methods.
Noise Surveys
Noise dosimetry, area sound level surveys, and hearing conservation program support. Identify overexposures and engineering control opportunities before citations happen.
IH Program Development
Build or rebuild your industrial hygiene program from scratch — monitoring schedules, sampling strategies, record-keeping systems, and regulatory compliance documentation.
Mold & IAQ Assessment
Indoor air quality investigations, mold sampling, moisture assessments, and remediation support. Identify the source. Quantify the exposure. Fix it.
Asbestos & Lead Surveys
Building material surveys, bulk sampling, and laboratory analysis for asbestos-containing materials (ACM), lead-based paint, and other regulated materials. Pre-renovation and pre-demolition.
What Happens When Nobody Takes the Air Sample
A mid-size manufacturer runs a grinding operation. Silica dust is visible in the air most days, but production is steady and nobody has complained. The safety manager knows air sampling is on the to-do list — it has been for two years. There's always something more urgent.
Then OSHA shows up. Not because of an incident — it's a programmed inspection under the National Emphasis Program for silica. The inspector pulls out a sampling pump and clips it to a worker's collar. Results come back: exposure at four times the permissible exposure limit.
No air sampling records. No written exposure control plan. No respiratory fit-testing documentation. No medical surveillance baseline. Each gap is a separate citation.
This is a composite scenario based on published OSHA enforcement actions against manufacturing facilities cited for silica overexposure without monitoring programs. In 2024 alone, OSHA issued penalties exceeding $1 million against a single manufacturer that had never conducted air sampling. Three workers required lung transplants.
Compliance Gaps Most Facilities Miss
These scenarios look compliant on the surface. Underneath, they carry real exposure. We see them at nearly every facility we assess for the first time.
The "Safety Program" Without IH Monitoring
Your facility has an organized safety program. Lockout/tagout is documented. Incident tracking is current. Annual training happens. But has anyone ever done a formal industrial hygiene assessment? Not a walkthrough — an actual measured assessment of noise, dust, or chemical exposure?
Most facilities we work with have solid safety infrastructure but no formal IH baseline. If someone filed a hearing loss claim tomorrow, would you have baseline data showing what their exposure actually was?
OSHA citations for missing exposure monitoring run $10,000–$30,000 per violation. Occupational disease claims average $40,000–$80,000 each.
Is this happening at your facility?
PPE Program on Paper, Never Fit-Tested
Respirators are required in your paint department. PPE is issued and logged. But when was the last time you actually fit-tested those respirators? OSHA requires annual fit-testing for every employee in a respirator program.
Missing documentation means $13,000–$16,550 per serious violation — multiplied by every employee without records. If someone develops respiratory disease and fit-testing records don't exist, liability extends to negligence at $100,000+.
Is this happening at your facility?
Annual Noise Survey That Misses Night Shift
Your facility conducts annual noise monitoring. Results show you're under the OSHA action level. But was that survey done during day shift? Night shift often runs different equipment at higher noise levels.
If night shift workers are exposed at 89–91 dB without documented monitoring, you have no baseline data for those employees. A hearing loss claim from a night shift worker would show clear non-compliance — because the facility has no documented monitoring of that worker's actual exposure.
Is this happening at your facility?
Same-Day Quotes. Fixed Pricing. Field-Ready Team.
A single willful OSHA violation costs up to $165,514. An iSi industrial hygiene assessment that catches it before the inspector does costs $4,050. That's a 41:1 return on a phone call. iSi returns quotes in under 30 minutes — not 7–14 business days. On a mid-size project, that speed alone is worth $10,500–$21,000 in avoided holding costs.
What You Get: The IH Report
Every industrial hygiene project delivers a complete report — not a raw data file. The report includes sample methods utilized, on-site observations, exposure limit information, laboratory results, and specific recommendations your team can act on.
Reports are written for practitioners and operations leaders — clear findings, prioritized recommendations, and compliance context. No padding. No filler. Your team reads it once and knows exactly what to do.
IH Fast-Track: Same-Day Quotes
Need an industrial hygiene assessment? We quote same-day. Most competitors take 7–14 days. Fill out the form below and we'll have a fixed price back to you in under 30 minutes.
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Same-day response on industrial hygiene assessments. Most requests quoted within 30 minutes.
The Single-Person Dependency Trap
If all your environmental knowledge lives in one person's head — and that person gets sick, leaves the company, or is unavailable — what happens?
If the EPA comes in and asks for documentation, and that person isn't there to answer, you're exposed. Your legal liability doesn't disappear — it becomes company-wide.
iSi takes person-dependent knowledge and turns it into a documented, systematized program that any qualified person can execute. Protects your people. Protects your company. Makes you scalable.
Industrial Hygiene Audit
An IH audit examines your monitoring programs, exposure data, and compliance documentation to identify gaps before regulatory inspectors do. Most facilities discover missing components during an audit — exposure assessments that are outdated, sampling programs that lack documentation, or PPE protocols that haven't been reviewed in years.
iSi's industrial hygiene audit reviews five critical areas:
- Exposure assessments: Review documented exposure data against current OSHA PELs and ACGIH TLVs. Identify monitoring gaps.
- Sampling program: Audit historical sampling records, methodology, and lab analytical reports. Flag gaps in coverage or frequency.
- PPE program: Evaluate selection criteria, fit-testing records, training documentation, and storage procedures.
- Hearing conservation program: Review baseline and annual audiograms, threshold shift documentation, and corrective actions.
- Respiratory protection program: Verify fit-testing records, medical evaluations, training files, and equipment maintenance logs.
When audits are triggered: OSHA citation, new process installation, organizational merger, insurance requirement, or proactive gap identification.
What you receive: A documented gap report prioritizing non-compliance items by severity, plus a remediation roadmap with timelines. Learn more about our compliance audit services at the compliance-audit hub.
Real scenario: A manufacturing facility with a documented exposure assessment from 2018 — now eight years old with two new production lines added since. An audit reveals the original assessment no longer represents current exposure. Sampling strategy is misaligned. No documentation of interim assessments. The gap is real, and it's fixable before an inspector raises it.
Industrial Hygiene Assessment — Common Questions
Direct answers to the questions safety managers and ops leaders ask when scoping an industrial hygiene assessment. Each section is a standalone answer — pull what you need or read top to bottom.
What does an industrial hygiene assessment cost?
iSi's baseline IH assessment starts at $4,050. The price covers sample collection on up to ten employees or eight monitoring locations, lab analysis through an AIHA-accredited laboratory, and a written report comparing results to the relevant OSHA Permissible Exposure Limit (PEL) or Action Level. Larger or multi-day assessments scale based on sample count and analyte panel.
How long does hexavalent chromium testing take?
Hex chrome sampling itself is a single work-shift event per employee group. Lab turnaround through accredited methods (NIOSH 7600 or OSHA ID-215) runs 5–7 business days standard, with 48-hour rush available at premium pricing. iSi's full report — including PEL comparison, control recommendations, and the defensible monitoring record an OSHA inspector will ask for — ships within three business days of lab return.
What triggers an OSHA silica exposure assessment requirement?
OSHA 29 CFR 1910.1053 (general industry) and 1926.1153 (construction) require exposure assessment whenever an employee may be exposed to respirable crystalline silica above the Action Level of 25 µg/m³ as an 8-hour TWA. The Table 1 specified-exposure-control option in construction provides a compliance path without monitoring; outside Table 1 tasks, objective data or initial monitoring is required. iSi runs the initial assessment and builds the written Exposure Control Plan that the standard mandates.
How often should noise dosimetry be repeated?
OSHA's Occupational Noise Exposure standard (29 CFR 1910.95) requires noise monitoring whenever a change in production, process, equipment, or controls may result in exposures at or above the Action Level of 85 dBA TWA. For stable operations where exposures don't change, iSi recommends repeat dosimetry every two to three years. Any significant production change resets the monitoring clock.
What is a personal air monitoring sample plan?
Personal air monitoring places a sampling device in the employee's breathing zone throughout the workshift. A representative sample plan selects employees by job task, shift, and exposure group; uses NIOSH or OSHA validated sampling and analytical methods; and produces an 8-hour Time-Weighted Average exposure measurement comparable to the relevant PEL. iSi's sample plan documentation is the defensible audit trail OSHA expects to see during a compliance inspection.
What chemicals does iSi's IH program cover?
iSi runs the full OSHA PEL panel: respirable crystalline silica, hexavalent chromium, lead, cadmium, beryllium, manganese, welding fume, isocyanates, respirable combustible dust, solvent vapors (VOCs), noise (dB), and the heat-stress WBGT panel. For chemicals outside the standard PEL list — emerging contaminants, proprietary process compounds — iSi designs custom sampling protocols against ACGIH Threshold Limit Values or manufacturer-published exposure limits.
Is Your Plant Ready for a Noise Inspection?
For five years, OSHA's Chicago region (Region 5) ran a Regional Emphasis Program targeting noise hazards in manufacturing — 759 noise citations came out of that region's inspection data in the cycle leading up to it. The directive (CPL 04-00-27) reached its expiration on May 31, 2026, and OSHA has renewed it before. Renewed or not, the inspection playbook doesn't change: an inspector can arrive and ask to see your noise exposure data and your hearing conservation program. If the dosimetry is years old, or the program exists on paper but has not been checked against 29 CFR 1910.95, that is where citations come from — in Illinois, Indiana, Michigan, Minnesota, Ohio, Wisconsin, and everywhere else OSHA operates.
What a readiness check covers
iSi's industrial hygiene team measures noise exposure during your normal operations and checks your hearing conservation program against what an inspector actually reviews: personal noise dosimetry and area sound-level monitoring during real production; your audiometric testing protocol — baseline and annual testing, and how results are handled; engineering and administrative controls already in place, and the gaps; and the recordkeeping you would hand an inspector. You get a written report that tells you where you stand and what to fix — in plain terms, with the documentation to back it up.
What it costs to wait
A single willful OSHA violation costs up to $165,514. A serious violation is up to $16,550 per instance, and an inspection that finds no program in place rarely produces just one citation. An iSi industrial hygiene assessment that catches the exposure first costs about $4,050. That is a 41:1 return on a phone call. For the regulatory mechanics — threshold tables, audiometric baselines, and the 90 dBA PEL / 85 dBA Action Level framework — see our deep dive on OSHA noise and hearing conservation requirements for manufacturers.
Industrial Hygiene Questions
What is an industrial hygiene assessment?
An industrial hygiene assessment evaluates workplace exposures — airborne contaminants, noise levels, chemical hazards, and physical agents — to determine whether employees are protected within OSHA permissible exposure limits. iSi delivers a complete IH report with sample methods, observations, exposure limit data, and actionable recommendations.
How much does an industrial hygiene assessment cost?
The median iSi industrial hygiene proje