1.2 Supervisor Role, Responsibilities, and On-Site Presence

What a certified supervisor is allowed—and required—to do

Quick Answer: The certified supervisor supervises and conducts abatements and prepares occupant protection plans and abatement reports (40 CFR 745.223). The supervisor must be physically onsite during all work-site preparation and post-abatement cleanup. During other abatement work the supervisor may be off-site if reachable by telephone, pager, or answering service and able to arrive in no more than 2 hours (40 CFR 745.227(e)(2)). The supervisor cannot take clearance samples.

40 CFR 745.223 defines certified supervisor as an individual trained by an accredited program and certified by EPA under 745.226 to supervise and conduct abatements, and to prepare occupant protection plans and abatement reports. EPA's certification page adds the practical corollary: supervisors may also perform all of the abatement activities that may be performed by abatement workers. You are not a clipboard-only title. You can scrape, replace, enclose, and clean—but when you do, you are still the supervisor of record for 745.227(e)(2).

The certified supervisor and the certified firm employing that supervisor shall ensure that all abatement activities follow 745.227 and all other federal, state, and local requirements (40 CFR 745.227(e)(3)). Notification to EPA (or the authorized state) is a firm duty, and the notice must name the project supervisor and that person's EPA certification number (745.227(e)(4)(vi)(I)). If the individual is certified and the firm is not, or the reverse, the job is not legal.

Discipline boundaries you will be tested on

A project designer can write the occupant protection plan and the abatement report. A project designer is not a substitute for the certified supervisor who must be onsite for prep and cleanup. A certified worker cannot "act as supervisor" by radio. An inspector or risk assessor on site for clearance is a different visit after cleanup, not the 745.227(e)(2) supervisor.

Occupant protection plan and abatement report

A written occupant protection plan (OPP) shall be developed for all abatement projects. It shall be unique to each residential dwelling or child-occupied facility, developed prior to the abatement, and shall describe the measures and management procedures that will protect occupants from lead-based paint hazards during the work. A certified supervisor or project designer prepares it (40 CFR 745.227(e)(5)). Copy-paste OPPs that name the wrong address fail the uniqueness rule.

An abatement report shall be prepared by a certified supervisor or project designer after the job (40 CFR 745.227(e)(10)). It includes start and end dates, firm and supervisor names, the OPP, the name, address, and signature of each certified inspector or risk assessor who did post-abatement sampling, the dust (and soil, if any) results, a detailed description of methods and locations, and—on or after January 12, 2026—the dust-lead hazard statement when results are below action levels but at or above reportable levels. Writing the report is a supervisor duty. Collecting the clearance samples is not.

The supervisor cannot self-clear

40 CFR 745.227(e)(8) is blunt: the following post-abatement procedures shall be performed only by a certified inspector or risk assessor—visual inspection for remaining deteriorated paint, dust, debris, or residue; dust sampling at least 1 hour after final cleanup; and comparison to the action levels. If a sample fails, the represented components are recleaned and retested by that inspector or risk assessor. A supervisor who wipes the floors, bags the wipes, and then signs a "clearance" letter has performed work requiring a different discipline. Keep the sampler independent of the crew that created the dust; later chapters cover wait times and action levels. The exam trap in this chapter is role confusion, not the arithmetic of 5/40/100.

Supervisors do need to read inspection and risk-assessment reports well enough to choose methods and write the OPP—that is curriculum item (v) and a hands-on topic—but reading a report is not the same as performing an inspection or risk assessment.

The on-site rule is two clocks, not one

40 CFR 745.227(e)(2) has three sentences worth memorizing in order:

1. A certified supervisor is required for each abatement project.
2. The supervisor shall be onsite during all work site preparation and during the post-abatement cleanup of work areas.
3. At all other times when abatement activities are being conducted, the supervisor shall be onsite or available by telephone, pager, or answering service, and able to be present at the work site in no more than 2 hours.

Do not say the supervisor must be physically on-site for every minute of every abatement task. That overstatement fails items about mid-shift supply runs. Do not say the supervisor can cover prep by phone. That understatement fails items about containment.

Work-site preparation is the set-up that makes the regulated area: isolating rooms, building critical barriers, hanging warning signs, shutting HVAC, wrapping furniture, laying exterior sheeting, staging decontamination. If plastic is going up, the supervisor's body is on the site—not at the warehouse, not in the truck on the interstate.

Post-abatement cleanup of work areas is the final HEPA vacuum / wet-wash sequence (and the matching exterior pickup of paint chips and debris) that makes the unit ready for the inspector's visual. Cleanup is not "other times." Cleanup is a named onsite period.

Other times are the abatement methods themselves after prep is done and before final cleanup starts: wet scraping, chemical removal, heat gun below 1100°F, component replacement, enclosure, encapsulation, soil removal. During those methods the supervisor may leave if both availability tests are met: (a) reachable by telephone, pager, or answering service, and (b) able to be present in no more than 2 hours. An answering service that takes a message while the supervisor is 3 hours out in a dead zone fails the second test. Availability without a 2-hour arrival is not compliance.

Jobsite scenarios

Worked example — warehouse during wet scraping. Containment is up, signs are posted, and the crew is wet-scraping. The supervisor drives 45 minutes to pick up more chelant and keeps the cell phone on. That is legal if the supervisor can actually answer and can be back on site in no more than 2 hours. The same drive during containment build is not legal.

Worked example — warehouse during containment build. The crew starts hanging 6-mil without the supervisor because "we'll call if something goes wrong." That is a 745.227(e)(2) violation from the first strip of tape. Preparation is not a telephone job.

Worked example — lunch during replacement. Windows are already contained; workers are pulling sash. The supervisor walks 10 minutes to a lunch counter with the phone on. Legal. Walking off-site for lunch while the same crew is tearing down containment and starting the final wet wash is not.

A certified worker left "in charge" does not become the supervisor. The regulation requires a certified supervisor, not a competent worker with the supervisor's number in a notebook. OSHA's competent person under 29 CFR 1926.62 is a different hat (Chapter 16); it does not replace 745.227(e)(2).

What this section is not asking you to memorize yet

Restricted practices, 5-business-day notification contents, soil 400 ppm replacement, and the 2026 action levels are later chapters. Carry forward only the role map: supervisor = command + hands + OPP + report; inspector/risk assessor = inspection/assessment + clearance; worker = hands under a supervisor; project designer = plans and reports, not the onsite supervisor; firm + individual both certified.