The Chemical Hygiene Plan (CHP) is required under OSHA's Laboratory Standard (29 CFR 1910.1450). Every lab that handles hazardous chemicals needs one. Most life science sites have something called a CHP — usually a 30–100 page document someone adapted from a template five years ago. When we audit these plans, the same gaps show up over and over.
If any of these are missing from yours, it's not a real CHP — it's a binder that will fail you the moment a regulator asks a specific question.
1. A current chemical inventory that matches reality
The CHP should reference your chemical inventory and include the basic categories of chemicals used in the lab. We routinely find CHPs that list reagents the lab stopped using years ago and omit the ones currently on the bench. Your CHP is only as defensible as the inventory underneath it. Reconcile before every annual review.
2. Designation of a qualified Chemical Hygiene Officer (CHO)
29 CFR 1910.1450(e)(3)(iv) requires designation of a CHO with the experience and training to develop and implement the CHP. “By default our Head of Operations” is not a designation. You need a named person, their qualifications documented, and a clear description of their authority to stop work when a hazard is uncontrolled.
3. Standard operating procedures (SOPs) for hazardous work
The CHP must include SOPs relevant to safety and health for work with hazardous chemicals. Many plans we review cite generic categories (“use of flammable solvents,” “work with corrosives”) without site-specific SOPs. A real CHP links to — or contains — the SOPs for your actual processes: fume-hood use, pyrophoric handling, peroxide formers, HF exposure response, cryogenic handling, whatever applies to your chemistry.
4. Criteria for exposure control measures
The plan must describe the specific measures used to reduce employee exposure: engineering controls, PPE, hygiene practices. Generic language (“appropriate PPE will be worn”) is not enough. Define which chemicals require what level of PPE, when a fume hood is mandatory vs. optional, and when a respirator triggers medical clearance and fit-testing under the Respiratory Protection Standard (1910.134).
5. Provisions for particularly hazardous substances (PHS)
This is the most frequently missing section. The Lab Standard specifically calls out substances that require additional consideration: select carcinogens (per NTP/IARC/OSHA lists), reproductive toxins, and substances with high acute toxicity. If you work with any of them — and most biotech labs do — your CHP must include:
- Designation of specific areas for their use (a “designated area” posted as such).
- Written procedures for containment, decontamination, and waste handling.
- Approvals required before use.
- Medical surveillance where applicable (e.g., Methylene chloride, formaldehyde, ethylene oxide).
6. Information and training specifics
The plan must describe how you'll inform and train employees. Most CHPs just say “training will be provided.” A real plan specifies content (hazard identification, signs/symptoms of exposure, reference to applicable SDSs, emergency procedures), frequency (initial and whenever a new hazard is introduced), and documentation (signed roster with date, trainer, content covered).
7. Annual review and update mechanism
The CHP must be reviewed and evaluated for effectiveness at least annually. We rarely see a dated review log. A one-paragraph addendum at the front of the document — “reviewed on [date] by [CHO]; changes made: [list]” — is enough. Without it, you cannot demonstrate the plan has been kept current, and OSHA assumes (correctly) that it hasn't.
What to do about it
If you read through the above and found more than two gaps in your current CHP, you probably need a rewrite more than a revision. The good news is that a properly-scoped CHP for a typical life science site can be rebuilt in 3–4 weeks, including stakeholder review and rollout training.
If you'd like a second pair of eyes on your existing plan, send it over. We'll mark it up against 1910.1450 and tell you honestly whether it needs edits or a rewrite.