100+ Free EPA Lead Project Designer Practice Questions

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Under 40 CFR 745 Subpart L, which prerequisite training is required before taking the EPA Lead Project Designer course?

Lead Inspector course (24 hours)

Lead Abatement Supervisor course (32 hours)

Lead Risk Assessor course (16 hours)

HAZWOPER 40-hour course

to track

2026 Statistics

Key Facts: EPA Lead Project Designer Exam

8 hrs

Project Designer Course Length

40 CFR 745 Subpart L

10 μg/ft²

2021 Floor Clearance Standard

24 CFR Part 35

5 mg/L

RCRA TCLP Lead Hazard Threshold

40 CFR 261 (D008)

400 ppm

Soil Lead Hazard (Play Areas)

EPA 2021 Update

50 μg/m³

OSHA Lead PEL (Construction)

29 CFR 1926.62

$25,000

HUD Rehab Threshold for Full Abatement

24 CFR Part 35 Subpart J

The EPA Lead Project Designer credential (40 CFR 745 Subpart L) authorizes certified individuals to design lead abatement project specifications — selecting methods (replacement, enclosure, encapsulation, paint removal), designing containment and negative-pressure enclosures, preparing Occupant Protection Plans, writing waste management plans per RCRA, and specifying clearance criteria per 24 CFR Part 35 (10/100/100 μg/ft² post-2021 update). Prerequisite: Lead Abatement Supervisor certification. The 8-hour course and exam are administered by EPA or authorized state programs. Lead abatement designers work on federally assisted housing, public housing, schools, and privately owned pre-1978 properties across the country.

Sample EPA Lead Project Designer Practice Questions

Try these sample questions to test your EPA Lead Project Designer exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under 40 CFR 745 Subpart L, which prerequisite training is required before taking the EPA Lead Project Designer course?

A.Lead Inspector course (24 hours)

B.Lead Abatement Supervisor course (32 hours)

C.Lead Risk Assessor course (16 hours)

D.HAZWOPER 40-hour course

Explanation: 40 CFR 745 Subpart L requires that Lead Project Designer candidates have already completed and received certification as a Lead Abatement Supervisor. The Project Designer course is an 8-hour add-on that builds on the Supervisor's knowledge of abatement methods, containment, and regulatory requirements.

2A lead project designer is preparing an abatement scope document. Which clearance standard from 24 CFR Part 35 applies to floors in pre-1978 target housing as of the 2021 update?

A.10 μg/ft²

B.40 μg/ft²

C.100 μg/ft²

D.250 μg/ft²

Explanation: The 2021 update to 24 CFR Part 35 lowered dust-lead clearance levels to 10 μg/ft² for floors, 100 μg/ft² for interior window sills, and 100 μg/ft² for window troughs. The previous floor clearance standard was 40 μg/ft², which HUD replaced with the more protective 10 μg/ft² threshold to better protect children from lead dust exposure.

3Under the 2021 update to 24 CFR Part 35, what is the dust-lead clearance level for interior window sills in target housing?

A.10 μg/ft²

B.40 μg/ft²

C.100 μg/ft²

D.250 μg/ft²

Explanation: The 2021 update to HUD's dust-lead hazard standards (effective January 6, 2020) set clearance levels at 10 μg/ft² for floors, 100 μg/ft² for interior window sills, and 100 μg/ft² for window troughs. These replaced the previous 40/250/400 μg/ft² levels that had been in place since 2001.

4A project designer specifies encapsulation as the abatement method for painted window trim. Which product type qualifies as a liquid encapsulant under HUD guidelines?

A.Standard latex paint applied in two coats

B.A specially formulated penetrating or barrier coating proven effective per HUD 35.1330

C.Any paint with a mil thickness greater than 10 mils

D.Polyurethane varnish applied over intact lead paint

Explanation: HUD regulation 24 CFR 35.1330 defines encapsulation as the application of a liquid encapsulant — a specially formulated material proven to durably adhere over lead-based paint and resist deterioration. These products must meet performance criteria; not any paint qualifies. Encapsulants are evaluated using EPA/HUD performance criteria (ASTM E1 and related protocols).

5When designing enclosure of a lead-painted interior wall, a project designer must specify that the enclosure material:

A.Be at least 1/4-inch drywall and include a vapor barrier

B.Be a rigid, durable material that permanently covers the LBP surface and prevents access

C.Be painted with encapsulant over the existing lead paint before installation

D.Be labeled with a lead hazard warning under TSCA Title IV

Explanation: HUD 24 CFR 35.1330 defines enclosure as the installation of a rigid, durable construction material that is mechanically fastened to the substrate to permanently cover LBP and prevent access. The enclosure must be maintained and kept in good condition. Drywall, paneling, and cementboard are common examples.

6A project designer is selecting a paint removal method for exterior wood siding. Which method is explicitly prohibited by EPA for lead paint removal due to hazardous dust and fume generation?

A.Wet hand scraping with HEPA vacuum

B.Chemical stripping with methylene chloride-free stripper

C.Open-flame burning or heat guns above 1100°F

D.HEPA-vacuum-shrouded power sanding

Explanation: EPA and HUD regulations prohibit open-flame burning and the use of heat guns operating above 1100°F for lead paint removal, because these methods volatilize lead into toxic fumes. EPA's 40 CFR 745.65 and HUD guidelines list prohibited methods for abatement and renovation work. Heat guns below 1100°F with HEPA vacuum and wet methods are allowed alternatives.

7Under RCRA regulations, lead paint debris is classified as a hazardous waste if the TCLP leachate contains lead at or above:

A.1 mg/L

B.5 mg/L

C.15 mg/L

D.50 mg/L

Explanation: Under RCRA (Resource Conservation and Recovery Act), the Toxicity Characteristic Leaching Procedure (TCLP) threshold for lead is 5.0 mg/L (EPA D008). If lead paint debris produces a TCLP leachate of 5 mg/L or greater, the waste must be managed as a RCRA hazardous waste. This is critical for waste management plan design.

8A project designer is writing an Occupant Protection Plan. Which element is NOT typically required in an Occupant Protection Plan for a lead abatement project?

A.Relocation requirements and schedule for occupants

B.Procedures for notifying occupants of project start and completion

C.A structural engineering assessment of the building framing

D.Description of how the work area will be isolated from occupied spaces

Explanation: An Occupant Protection Plan addresses lead hazard protection for residents — relocation schedules, containment, notification, and re-occupancy criteria. A structural engineering assessment of building framing is not a component of the Occupant Protection Plan; it would be part of a separate building assessment if structurally modified.

9When designing a negative-pressure enclosure (NPE) for interior lead abatement, a project designer must specify negative air units with HEPA filtration. The primary purpose of maintaining negative pressure is to:

A.Increase humidity to suppress lead dust resuspension

B.Prevent contaminated air from escaping the work area into occupied spaces

C.Reduce worker lead exposure by increasing air turnover

D.Meet OSHA PEL for lead in air (50 μg/m³)

Explanation: Negative-pressure enclosures maintain a pressure differential so that air flows INTO the work area rather than out, preventing lead-contaminated air from migrating into occupied spaces. The negative air machines draw air out through HEPA filters, maintaining the pressure differential. This is the containment function distinct from worker air quality control.

10A project designer is specifying containment for exterior abatement on a multi-family building. Which element is essential for proper exterior containment under EPA guidelines?

A.Rigid steel scaffolding enclosing the entire building

B.Polyethylene sheeting extending at least 10 feet from the building to capture falling debris

C.Air filtration units at each window opening

D.A perimeter fence with a lead hazard sign posted every 50 feet

Explanation: EPA guidelines and HUD lead-safe housing rules require that exterior containment include ground protection — typically polyethylene sheeting (6-mil poly) extending outward from the building far enough to capture all falling debris. Twelve feet or more is common practice. The sheeting prevents soil contamination and allows debris collection.

About the EPA Lead Project Designer Exam

The EPA Lead Project Designer certification qualifies professionals to design lead abatement projects in pre-1978 target housing and child-occupied facilities under 40 CFR 745 Subpart L. Candidates must already hold Lead Abatement Supervisor certification before taking the 8-hour Project Designer course.

Questions

100 scored questions

Time Limit

3 hours (typical)

Passing Score

70% (varies by state)

Exam Fee

Varies by state ($25–$100) (EPA / State-Authorized Lead Programs)

EPA Lead Project Designer Exam Content Outline

20%

Regulations and Certification

40 CFR 745 Subpart L, state authorization, HUD Lead Safe Housing Rule, TSCA requirements, certification roles

20%

Abatement Methods

Replacement, enclosure (HUD 35.1330), liquid/adhesive encapsulants, paint removal (wet/HEPA/chemical), soil abatement

20%

Containment and Negative Pressure Design

6-mil poly, double-layer doorway curtains, HVAC sealing, negative air machines, ACH requirements

15%

Clearance Standards

24 CFR Part 35 2021 update (10/100/100 μg/ft²), soil lead hazards (400/1,200 ppm), clearance examination independence

15%

Waste Management and Worker Safety

RCRA D008 TCLP ≥ 5 mg/L, hazardous waste manifesting, OSHA 29 CFR 1926.62 PEL/action level, PPE, decontamination

10%

Occupant Protection and Project Coordination

Occupant Protection Plans, relocation of children under 6 and pregnant women, HUD rehabilitation tiers, phasing

How to Pass the EPA Lead Project Designer Exam

What You Need to Know

Passing score: 70% (varies by state)
Exam length: 100 questions
Time limit: 3 hours (typical)
Exam fee: Varies by state ($25–$100)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

EPA Lead Project Designer Study Tips from Top Performers

1Master the 2021 clearance standards: 10/100/100 μg/ft² for floor/sill/trough — these replaced the old 40/250/400 standards

2Know all four abatement methods and when each is appropriate — especially why encapsulation is inappropriate on deteriorated or friction surfaces

3Memorize the RCRA TCLP threshold for lead: 5 mg/L (D008) — determines hazardous waste classification for disposal

4Understand the HUD rehab tiers: <$5K interim controls, $5K–$25K interim + abatement, >$25K full abatement

5Know the OSHA PEL (50 μg/m³) and action level (30 μg/m³) for lead in construction — and which triggers biological monitoring vs. written compliance program

Frequently Asked Questions

What is the EPA Lead Project Designer certification?

The EPA Lead Project Designer certification (under 40 CFR 745 Subpart L) qualifies individuals to design lead abatement project specifications for pre-1978 target housing and child-occupied facilities. The credential requires completing an 8-hour Project Designer training course. Prerequisite: you must already be certified as a Lead Abatement Supervisor. The Project Designer writes abatement scopes, selects methods, designs containment, and prepares Occupant Protection Plans.

What are the prerequisites for the EPA Lead Project Designer course?

You must hold a current EPA (or state-authorized) Lead Abatement Supervisor certification before enrolling in the 8-hour Project Designer course. The Project Designer training builds on the Supervisor's knowledge of abatement methods, containment, and regulatory requirements. No other prerequisites are required.

What are the post-2021 dust-lead clearance standards under 24 CFR Part 35?

The 2021 update to 24 CFR Part 35 (effective for HUD-assisted housing) established: 10 μg/ft² for floors, 100 μg/ft² for interior window sills, and 100 μg/ft² for window troughs. These replaced the previous 40/250/400 μg/ft² thresholds. Project designers must cite these current standards in all specifications.

When is lead paint debris RCRA hazardous waste?

Lead paint debris is classified as RCRA hazardous waste (D008) when TCLP (Toxicity Characteristic Leaching Procedure) testing yields a leachate lead concentration at or above 5 mg/L. If TCLP testing is not performed, the debris should be managed as presumed D008 hazardous waste — containerized, manifested, and transported to a licensed TSDF.

What abatement methods can a Lead Project Designer specify?

EPA and HUD recognize four abatement methods: (1) Component replacement — removing and replacing LBP-containing components; (2) Enclosure — installing rigid, durable materials (HUD 35.1330) permanently covering LBP; (3) Encapsulation — applying a liquid or adhesive-backed encapsulant proven to adhere over LBP; and (4) Paint removal — using wet scraping, HEPA-shrouded power tools, or chemical stripping. Open-flame burning and dry unshrouded power grinding are prohibited.

Does the HUD Lead Safe Housing Rule apply to my project?

The HUD Lead Safe Housing Rule (24 CFR Part 35) applies to pre-1978 housing receiving federal assistance — including public housing, Section 8 voucher housing, and properties receiving HUD rehabilitation grants. Housing built after December 31, 1977 is exempt. The rule tiers requirements by rehabilitation investment: less than $5,000/unit requires standard interim controls; $5,000–$25,000/unit requires interim controls and hazard abatement; above $25,000/unit requires full abatement of all LBP hazards.