DELAWARE LEAD ABATEMENT
CONTRACTOR EXAMINATION
Complete Practice Exam with 100+
Questions, ANSWERs & Rationales 2026
SECTION 1: REGULATORY FRAMEWORK & AGENCY JURISDICTION (Questions 1-15)
Q1. Lead-based paint is most commonly found in buildings constructed before which year?
A) 1950
B) 1978
C) 1990
D) 2005
Correct ANSWER: A
Rationale: While the U.S. federal ban on consumer lead-based paint was finalized in 1978, the highest
concentrations of lead paint hazards are most commonly associated with structures built before 1950
due to heavier use and multiple repaint layers. Contractors must prioritize pre-1950 buildings when
assessing potential lead hazards because deterioration in these older structures significantly increases
exposure risk.
Q2. Which agency is the PRIMARY federal regulator of lead-based paint activities?
A) OSHA (Occupational Safety and Health Administration)
B) EPA (Environmental Protection Agency)
C) DOT (Department of Transportation)
D) FEMA (Federal Emergency Management Agency)
,Correct ANSWER: B
Rationale: The Environmental Protection Agency (EPA) is the primary federal agency responsible for
regulating lead-based paint activities, particularly under the Renovation, Repair, and Painting (RRP) Rule
and lead abatement certification programs. OSHA regulates worker safety, but EPA governs
environmental exposure prevention and certification standards for contractors.
Q3. Which agency enforces worker safety standards on lead abatement sites?
A) EPA
B) HUD
C) OSHA
D) DOE
Correct ANSWER: C
Rationale: OSHA (Occupational Safety and Health Administration) enforces workplace safety standards,
including exposure limits, PPE requirements, and training protocols for workers handling lead hazards.
Q4. In Delaware, which state agency administers lead abatement certification?
A) Delaware Department of Labor
B) Delaware Division of Public Health (DPH)
C) Delaware Department of Natural Resources and Environmental Control (DNREC)
D) Delaware Solid Waste Authority
Correct ANSWER: B
Rationale: The Delaware Division of Public Health (DPH), under the Delaware Health and Social Services,
oversees enforcement of lead regulations and monitors compliance. Individuals and firms performing
lead-based paint activities in Delaware must be certified by the DPH.
,Q5. What is the minimum passing score for the Delaware Lead Abatement Contractor Exam?
A) 60%
B) 70%
C) 75%
D) 80%
Correct ANSWER: B
Rationale: Delaware requires passing the Delaware Lead Abatement Worker Exam with a minimum
score of 70%.
Q6. How long is a Delaware lead abatement certification valid?
A) 1 year
B) 2 years
C) 5 years
D) 10 years
Correct ANSWER: C
Rationale: Certification is valid for five (5) years. Individuals must submit an Application for Certification
to DPH and pay the required certification fee.
Q7. What is the OSHA Permissible Exposure Limit (PEL) for airborne lead averaged over an 8-hour work
shift?
A) 0.010 mg/m³
B) 0.050 mg/m³
C) 0.100 mg/m³
D) 0.500 mg/m³
Correct ANSWER: B
, Rationale: OSHA sets the permissible exposure limit (PEL) for airborne lead at 0.050 mg/m³ averaged
over an 8-hour work shift. Exceeding this limit requires engineering controls, respiratory protection, and
medical monitoring of workers.
Q8. A certified firm is hired to permanently eliminate lead-based paint hazards in a pre-1978 Delaware
residential dwelling. Based on Delaware DPH Lead-Based Paint Hazards Regulation (4459), which
classification is MOST ACCURATE for this work?
A) Renovation, Repair, and Painting (RRP)
B) Interim Controls
C) Abatement
D) Routine Maintenance
Correct ANSWER: C
Rationale: Abatement equals permanent elimination of lead-based paint hazards. RRP activities disrupt
paint as a consequence of repair, not with the primary intent of permanent elimination. Interim controls
are designed to temporarily, not permanently, reduce hazards. Routine maintenance does not target the
permanent elimination of hazards.
Q9. According to Delaware regulations, what is the notification deadline for submitting an abatement
project notification to the DPH Secretary prior to starting work?
A) 2 business days
B) 5 business days
C) 7 calendar days
D) 10 business days
Correct ANSWER: B
Rationale: The Delaware DPH Notification Clock requires that original or updated abatement project
notifications must be received by the Secretary 5 business days prior to commencement.
CONTRACTOR EXAMINATION
Complete Practice Exam with 100+
Questions, ANSWERs & Rationales 2026
SECTION 1: REGULATORY FRAMEWORK & AGENCY JURISDICTION (Questions 1-15)
Q1. Lead-based paint is most commonly found in buildings constructed before which year?
A) 1950
B) 1978
C) 1990
D) 2005
Correct ANSWER: A
Rationale: While the U.S. federal ban on consumer lead-based paint was finalized in 1978, the highest
concentrations of lead paint hazards are most commonly associated with structures built before 1950
due to heavier use and multiple repaint layers. Contractors must prioritize pre-1950 buildings when
assessing potential lead hazards because deterioration in these older structures significantly increases
exposure risk.
Q2. Which agency is the PRIMARY federal regulator of lead-based paint activities?
A) OSHA (Occupational Safety and Health Administration)
B) EPA (Environmental Protection Agency)
C) DOT (Department of Transportation)
D) FEMA (Federal Emergency Management Agency)
,Correct ANSWER: B
Rationale: The Environmental Protection Agency (EPA) is the primary federal agency responsible for
regulating lead-based paint activities, particularly under the Renovation, Repair, and Painting (RRP) Rule
and lead abatement certification programs. OSHA regulates worker safety, but EPA governs
environmental exposure prevention and certification standards for contractors.
Q3. Which agency enforces worker safety standards on lead abatement sites?
A) EPA
B) HUD
C) OSHA
D) DOE
Correct ANSWER: C
Rationale: OSHA (Occupational Safety and Health Administration) enforces workplace safety standards,
including exposure limits, PPE requirements, and training protocols for workers handling lead hazards.
Q4. In Delaware, which state agency administers lead abatement certification?
A) Delaware Department of Labor
B) Delaware Division of Public Health (DPH)
C) Delaware Department of Natural Resources and Environmental Control (DNREC)
D) Delaware Solid Waste Authority
Correct ANSWER: B
Rationale: The Delaware Division of Public Health (DPH), under the Delaware Health and Social Services,
oversees enforcement of lead regulations and monitors compliance. Individuals and firms performing
lead-based paint activities in Delaware must be certified by the DPH.
,Q5. What is the minimum passing score for the Delaware Lead Abatement Contractor Exam?
A) 60%
B) 70%
C) 75%
D) 80%
Correct ANSWER: B
Rationale: Delaware requires passing the Delaware Lead Abatement Worker Exam with a minimum
score of 70%.
Q6. How long is a Delaware lead abatement certification valid?
A) 1 year
B) 2 years
C) 5 years
D) 10 years
Correct ANSWER: C
Rationale: Certification is valid for five (5) years. Individuals must submit an Application for Certification
to DPH and pay the required certification fee.
Q7. What is the OSHA Permissible Exposure Limit (PEL) for airborne lead averaged over an 8-hour work
shift?
A) 0.010 mg/m³
B) 0.050 mg/m³
C) 0.100 mg/m³
D) 0.500 mg/m³
Correct ANSWER: B
, Rationale: OSHA sets the permissible exposure limit (PEL) for airborne lead at 0.050 mg/m³ averaged
over an 8-hour work shift. Exceeding this limit requires engineering controls, respiratory protection, and
medical monitoring of workers.
Q8. A certified firm is hired to permanently eliminate lead-based paint hazards in a pre-1978 Delaware
residential dwelling. Based on Delaware DPH Lead-Based Paint Hazards Regulation (4459), which
classification is MOST ACCURATE for this work?
A) Renovation, Repair, and Painting (RRP)
B) Interim Controls
C) Abatement
D) Routine Maintenance
Correct ANSWER: C
Rationale: Abatement equals permanent elimination of lead-based paint hazards. RRP activities disrupt
paint as a consequence of repair, not with the primary intent of permanent elimination. Interim controls
are designed to temporarily, not permanently, reduce hazards. Routine maintenance does not target the
permanent elimination of hazards.
Q9. According to Delaware regulations, what is the notification deadline for submitting an abatement
project notification to the DPH Secretary prior to starting work?
A) 2 business days
B) 5 business days
C) 7 calendar days
D) 10 business days
Correct ANSWER: B
Rationale: The Delaware DPH Notification Clock requires that original or updated abatement project
notifications must be received by the Secretary 5 business days prior to commencement.
