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Lead RRP cleaning verification and dust clearance practice questions

20 free practice questions from 40 CFR 745.85(b). Each answer is explained and linked to the rule it comes from.

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Lead RRP cleaning verification and dust clearance

20 questions across 8 topics. After each answer you see why it is right, with a link to the official source.

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Key terms and who performs verification

  1. 1. Which feature sets the 745.83 dry disposable cleaning cloth apart from the wet disposable cleaning cloth?

    • A. It is white
    • B. It is commercially available
    • C. It is electrostatically charged
    • D. It is designed for hard surfaces such as uncarpeted floors or counter tops
    Show answer

    Answer: C. It is electrostatically charged

    A dry disposable cleaning cloth is "a commercially available dry, electrostatically charged, white disposable cloth designed to be used for cleaning hard surfaces such as uncarpeted floors or counter tops." A wet one is "a commercially available, pre-moistened white disposable cloth designed to be used for cleaning hard surfaces such as uncarpeted floors or counter tops."

    Source: eCFR: 40 CFR 745.83, Definitions (as of Nov 4, 2026)

  2. 2. Under the 745.83 definition, who develops and distributes, or otherwise approves, the cleaning verification card?

    • A. EPA
    • B. The accredited training provider
    • C. The certified renovation firm
    • D. The test kit manufacturer
    Show answer

    Answer: A. EPA

    A cleaning verification card is "a card developed and distributed, or otherwise approved, by EPA".

    Source: eCFR: 40 CFR 745.83, Definitions (as of Nov 4, 2026)

Visual inspections, re-cleaning and signs

  1. 3. During interior cleaning verification, the certified renovator's visual inspection finds dust still present. What does 745.85(b)(1)(i) require next?

    • A. Wipe the windowsills with a dry disposable cleaning cloth
    • B. Have a certified risk assessor collect dust samples
    • C. Remove the warning signs and note the dust in the records
    • D. Remove the dust by re-cleaning and perform another visual inspection
    Show answer

    Answer: D. Remove the dust by re-cleaning and perform another visual inspection

    "If dust, debris or residue is present, these conditions must be removed by re-cleaning and another visual inspection must be performed."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  2. 4. For an exterior renovation, what must the area pass before 745.85(b)(2) directs that the warning signs be removed?

    • A. A wipe of the ground covering with a wet disposable cleaning cloth that matches the card
    • B. A walk-through by the building owner
    • C. The visual inspection by the certified renovator
    • D. A wipe of each exterior windowsill with a dry disposable cleaning cloth
    Show answer

    Answer: C. The visual inspection by the certified renovator

    For exteriors, if dust, debris or residue is present it "must be eliminated and another visual inspection must be performed. When the area passes the visual inspection, remove the warning signs."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  3. 5. After an exterior renovation, where does 745.85(b)(2) direct the certified renovator to look for dust, debris or residue still present?

    • A. On surfaces in and below the work area, including windowsills and the ground
    • B. On the interior floors and windowsills of the rooms nearest the work area
    • C. On the neighboring property, wherever the work was within 10 feet of the property line
    • D. Only on the plastic ground covering, before it is removed
    Show answer

    Answer: A. On surfaces in and below the work area, including windowsills and the ground

    "A certified renovator must perform a visual inspection to determine whether dust, debris or residue is still present on surfaces in and below the work area, including windowsills and the ground."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  4. 6. A painter returns after post-renovation cleaning verification has been performed to apply paint to walls that were already prepared. How does 745.85(d) treat this work?

    • A. It must be directed by a certified renovator who is on site
    • B. It requires a new round of cleaning verification
    • C. It is not regulated by Subpart E, because it does not disturb paint and comes after cleaning verification
    • D. It requires the warning signs to be posted again
    Show answer

    Answer: C. It is not regulated by Subpart E, because it does not disturb paint and comes after cleaning verification

    "Activities that do not disturb paint, such as applying paint to walls that have already been prepared, are not regulated by this subpart if they are conducted after post-renovation cleaning verification has been performed."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

Windowsill verification

  1. 7. What condition does 745.85(b)(1)(ii)(A)(1) set for the wet disposable cleaning cloth used for the first wipe of a windowsill?

    • A. It is soaked enough to drip
    • B. It is damp to the touch
    • C. It has been left to dry for 1 hour
    • D. It is folded in quarters
    Show answer

    Answer: B. It is damp to the touch

    The certified renovator must "Wipe the windowsill with a wet disposable cleaning cloth that is damp to the touch."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  2. 8. After re-cleaning a windowsill whose first cloth was darker than the card, which cloth does 745.85(b)(1)(ii)(A)(2) allow for the next wipe?

    • A. Only a dry disposable cleaning cloth
    • B. Only the same side of the cloth used for the first wipe
    • C. Only a cloth rinsed in clean water
    • D. Either a new cloth or the used cloth folded so that an unused surface is exposed
    Show answer

    Answer: D. Either a new cloth or the used cloth folded so that an unused surface is exposed

    After re-cleaning, "either use a new cloth or fold the used cloth in such a way that an unused surface is exposed, and wipe the surface again."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  3. 9. An interior windowsill's first wet cloth is darker than the cleaning verification card. Which cleaning steps does 745.85(b)(1)(ii)(A)(2) direct the renovator to re-clean the windowsill with before wiping it again?

    • A. The wall cleaning in 745.85(a)(5)(ii)(A), from the ceiling down to the floor
    • B. Collecting paint chips and removing protective sheeting under 745.85(a)(5)(i)
    • C. The HEPA vacuuming in 745.85(a)(5)(ii)(B) and the damp-cloth wiping in 745.85(a)(5)(ii)(C)
    • D. Setting up the work area containment again under 745.85(a)(2)
    Show answer

    Answer: C. The HEPA vacuuming in 745.85(a)(5)(ii)(B) and the damp-cloth wiping in 745.85(a)(5)(ii)(C)

    If the cloth "does not match and is darker than the cleaning verification card, re-clean the windowsill as directed in paragraphs (a)(5)(ii)(B) and (a)(5)(ii)(C) of this section". Those paragraphs cover HEPA vacuuming and wiping with "a damp cloth."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

Uncarpeted floors and countertops

  1. 10. How does 745.85(b)(1)(ii)(B) require uncarpeted floors to be wiped for cleaning verification?

    • A. By hand, with the cloth folded in quarters
    • B. With a HEPA vacuum equipped with a beater bar
    • C. With a 2-bucket mopping method that keeps wash water separate from rinse water
    • D. Using an application device with a long handle and a head to which the cloth is attached
    Show answer

    Answer: D. Using an application device with a long handle and a head to which the cloth is attached

    "Floors must be wiped using an application device with a long handle and a head to which the cloth is attached." HEPA vacuuming and the 2-bucket method are cleaning steps in 745.85(a)(5)(ii), not the verification wipe.

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  2. 11. A section of an uncarpeted floor fails its first wet-cloth wipe during interior cleaning verification. After the section is re-cleaned, which cloth does 745.85(b)(1)(ii)(B)(1) say to use to wipe it again?

    • A. A new wet disposable cleaning cloth
    • B. The same cloth, folded so that an unused surface is exposed
    • C. A dry disposable cleaning cloth, without waiting
    • D. Any clean cotton rag that is damp to the touch
    Show answer

    Answer: A. A new wet disposable cleaning cloth

    If a floor section's cloth does not match the card, "re-clean that section of the surface as directed in paragraphs (a)(5)(ii)(B) and (a)(5)(ii)(C) of this section, then use a new wet disposable cleaning cloth to wipe that section again." The folded-cloth choice is written only for windowsills.

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  3. 12. After the waiting period for a floor that did not pass, which sections does 745.85(b)(1)(ii)(B)(3) say to wipe with a dry disposable cleaning cloth?

    • A. Every section in the work area, including those that already passed
    • B. Only sections larger than 40 square feet
    • C. Each section of the surface that has not yet achieved post-renovation cleaning verification
    • D. Only the first section that failed
    Show answer

    Answer: C. Each section of the surface that has not yet achieved post-renovation cleaning verification

    "After waiting for the entire surface within the work area to dry, wipe each section of the surface that has not yet achieved post-renovation cleaning verification with a dry disposable cleaning cloth."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

Optional dust clearance testing

  1. 13. Under 745.85(c), cleaning verification need not be performed if dust clearance sampling (meeting the conditions listed there) is required by what?

    • A. The certified renovator's own decision on site
    • B. The contract between the renovation firm and the person contracting for the renovation, or another Federal, State, Territorial, Tribal, or local law or regulation
    • C. A verbal request from an occupant during the job
    • D. A note in the firm's own written safety plan
    Show answer

    Answer: B. The contract between the renovation firm and the person contracting for the renovation, or another Federal, State, Territorial, Tribal, or local law or regulation

    "Cleaning verification need not be performed if the contract between the renovation firm and the person contracting for the renovation or another Federal, State, Territorial, Tribal, or local law or regulation requires" the items in (c)(1) to (3).

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  2. 14. For cleaning verification to be skipped under 745.85(c), at what point must the contract or applicable law require the renovation firm to perform dust clearance sampling?

    • A. At the conclusion of a renovation covered by Subpart E
    • B. Before the renovation begins, to record baseline dust levels
    • C. At the end of each work day while the renovation is under way
    • D. Only after the occupants have moved back into the work area
    Show answer

    Answer: A. At the conclusion of a renovation covered by Subpart E

    Cleaning verification need not be performed if the contract or another law or regulation requires, among other things, "The renovation firm to perform dust clearance sampling at the conclusion of a renovation covered by this subpart."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  3. 15. Under 745.85(c)(3), until what result is the renovation firm required to re-clean the work area?

    • A. Until a wet disposable cleaning cloth matches the cleaning verification card
    • B. Until no reportable level of lead is found in any sample
    • C. Until the occupant signs off on the cleaning
    • D. Until the dust sample results are below the dust-lead action levels in 745.227(e)(8) or any applicable State, Territorial, Tribal, or local standard
    Show answer

    Answer: D. Until the dust sample results are below the dust-lead action levels in 745.227(e)(8) or any applicable State, Territorial, Tribal, or local standard

    The firm must "re-clean the work area until the dust sample results are below the dust-lead action levels in § 745.227(e)(8) or any applicable State, Territorial, Tribal, or local standard."

    Source: eCFR: 40 CFR 745.85, Work practice standards (as of Nov 4, 2026)

  4. 16. Dust clearance sampling replaced cleaning verification for a renovation in common areas of multi-unit target housing. What does 745.86(d)(3) require the renovation firm to post?

    • A. The certified renovator's course completion certificate
    • B. These dust sampling reports or information on how interested occupants of the housing being renovated can obtain a copy of the report
    • C. The firm's certificate of EPA certification
    • D. The number of wet and dry cloths used
    Show answer

    Answer: B. These dust sampling reports or information on how interested occupants of the housing being renovated can obtain a copy of the report

    Firms "must post these dust sampling reports or information on how interested occupants of the housing being renovated can obtain a copy of the report," in areas "likely to be seen by the occupants of all of the affected units."

    Source: eCFR: 40 CFR 745.86, Recordkeeping and reporting requirements (as of Nov 4, 2026)

Dust sampling technicians

  1. 17. Under 745.90(a)(1), where does EPA dust sampling technician certification allow the certified individual to perform dust clearance sampling under 745.85(c)?

    • A. Only in the State where the individual took the course
    • B. In any State or Indian Tribal area that does not have a renovation program that is authorized under subpart Q
    • C. Only in child-occupied facilities
    • D. Only on projects where a certified risk assessor is also present
    Show answer

    Answer: B. In any State or Indian Tribal area that does not have a renovation program that is authorized under subpart Q

    "EPA dust sampling technician certification allows the certified individual to perform dust clearance sampling under § 745.85(c) in any State or Indian Tribal area that does not have a renovation program that is authorized under subpart Q of this part."

    Source: eCFR: 40 CFR 745.90, Renovator certification and dust sampling technician certification (as of Nov 4, 2026)

  2. 18. When performing optional dust clearance sampling under 745.85(c), what does 745.90(c)(2) require a certified dust sampling technician to have at the work site?

    • A. A copy of the renovation contract signed by the owner
    • B. Copies of their initial course completion certificate and their most recent refresher course completion certificate
    • C. The firm's cleaning verification card
    • D. A letter from the laboratory that will analyze the samples
    Show answer

    Answer: B. Copies of their initial course completion certificate and their most recent refresher course completion certificate

    The technician "Must have with them at the work site copies of their initial course completion certificate and their most recent refresher course completion certificate."

    Source: eCFR: 40 CFR 745.90, Renovator certification and dust sampling technician certification (as of Nov 4, 2026)

Action levels and their dates

  1. 19. How does the floor action level in 745.227(e)(8)(viii) differ before January 12, 2026 and on or after that date?

    • A. 40 µg/ft2 before, 10 µg/ft2 on or after
    • B. 10 µg/ft2 before, 40 µg/ft2 on or after
    • C. 10 µg/ft2 both before and on or after
    • D. 10 µg/ft2 before, 5 µg/ft2 on or after
    Show answer

    Answer: D. 10 µg/ft2 before, 5 µg/ft2 on or after

    "Before January 12, 2026, the action levels for lead in dust are 10 µg/ft2 for floors" and "On or after January 12, 2026, the action levels for lead in dust are 5 µg/ft2 for floors".

    Source: eCFR: 40 CFR 745.227, Work practice standards for conducting lead-based paint activities: target housing and child-occupied facilities (as of Nov 4, 2026)

Records and emergency renovations

  1. 20. In the certified renovator's certification under 745.86(b)(6)(viii), what must the brief description of the cleaning verification results include?

    • A. The number of wet and dry cloths used
    • B. The name of the laboratory that analyzed the cloths
    • C. Photographs of each cloth next to the card
    • D. The dust-lead results in micrograms per square foot
    Show answer

    Answer: A. The number of wet and dry cloths used

    The certification states that "The certified renovator performed the post-renovation cleaning verification (the results of which must be briefly described, including the number of wet and dry cloths used)."

    Source: eCFR: 40 CFR 745.86, Recordkeeping and reporting requirements (as of Nov 4, 2026)