LEAD INSPECTOR COMPREHENSIVE TEST
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
●● Dust sample clearance values. Answer: - Floors: 40 μg/ft2 > 10
μg/ft2 (10 μg/ft2 in NY) - Windows: 250 μg/ft2 > 100 μg/ft2 (50 μg/ft2
in NY) - Window wells (troughs): 400 μg/ft2 (100 μg/ft2 in NY) -
Samples must be at 1 sq ft > 2 sq ft (can be reduced to 1 sq ft if within
10 μg)
●● EPA Soil Regulations. Answer: - 400 ppm for playgrounds/children's
areas - 1200 ppm for rest of yard - There must be 9 sq ft of soil to
classify with soil testing - At 5000 ppm, MUST remediate/abate (remove
& replace, paving, or bioremediation)
●● Lab sampling technique. Answer: - AAS (Atomic Absorption
Spectrometry) - Sample is placed into a furnace and vaporized ... light is
shone through to give a quantitative result
●● XRF. Answer: - X-ray fluorescence - Utilizes radioactive isotopes
(unstable material trying to reach stability) - Cobalt-57 (half-life of 9
months) and cadmium-109 (half-life of 15 months) are the two sources
(where radiation originates) - Emits gamma rays but will read X-rays
(backscatters) - Ionizing radiation from the removal of electrons due to
interactions with radiation
,●● LBP Hazard. Answer: ANY condition that causes exposure to lead
●● LBP inspection. Answer: a surface-by-surface investigation to
determine the presence of lead
●● CPSC. Answer: - Consumer Product Safety Commission - Set a lead
paint standard: cannot contain 0.06% lead by weight ... updated to
0.009% - The commission banned lead-based paint in 1978
●● True/False: Dust sampling only done for hazard assessments.
Answer: True; only risk assessors take samples to determine likelihood
of coming into contact with contaminants
●● What kind of sampling must be done for inspections?. Answer:
Random ... repeats must be annotated then you move onto the next
●● HUD Guidelines for abatement. Answer: Must last 20 years.
Includes the following procedures: - Removal - Enclosure - Replacement
- Encapsulation Painting over is a temporary fix!
●● Water standards for lead. Answer: - 15 ppb under the Clean Water
Act (CWA) - 5 ppb under the FDA standard (bottled water) *These are
the ONLY instances where ppb is used
, ●● Why was lead used so much?. Answer: - Durable - Colorful - Anti-
corrosive - Anti-fungal - Drying agent
●● What does RRP do?. Answer: - Renovation, Repairing, and Painting
program - Provided enforcement to Title X in 2010 ... $37,500 fines for
violation - Dust sampling technicians can only sample for RRP projects
●● What must you do if a pre-1978 site is not tested?. Answer: Presume
lead-based paint.
●● Where is LBP still allowed?. Answer: Commercial purposes/boats
●● What are the major industrial uses of lead?. Answer: Present -
Electrical batteries - Chemical additives Past - Paint additive - Gasoline
additive (now in soil ... doesn't permeate quickly, so sample TOP
portions (12 in)) - Solder/pipes
●● What are the common pathways of contamination?. Answer: - For
children under 6, hand-to-mouth contact from DUST ... lead tastes sweet
(pica is the term for consumption of non-food items) - For adults,
occupational exposure (take-home lead ... pets can contribute too)
●● Chronic vs. acute exposure. Answer: - Chronic: low dose, long
period - Acute: high dose, short period
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
●● Dust sample clearance values. Answer: - Floors: 40 μg/ft2 > 10
μg/ft2 (10 μg/ft2 in NY) - Windows: 250 μg/ft2 > 100 μg/ft2 (50 μg/ft2
in NY) - Window wells (troughs): 400 μg/ft2 (100 μg/ft2 in NY) -
Samples must be at 1 sq ft > 2 sq ft (can be reduced to 1 sq ft if within
10 μg)
●● EPA Soil Regulations. Answer: - 400 ppm for playgrounds/children's
areas - 1200 ppm for rest of yard - There must be 9 sq ft of soil to
classify with soil testing - At 5000 ppm, MUST remediate/abate (remove
& replace, paving, or bioremediation)
●● Lab sampling technique. Answer: - AAS (Atomic Absorption
Spectrometry) - Sample is placed into a furnace and vaporized ... light is
shone through to give a quantitative result
●● XRF. Answer: - X-ray fluorescence - Utilizes radioactive isotopes
(unstable material trying to reach stability) - Cobalt-57 (half-life of 9
months) and cadmium-109 (half-life of 15 months) are the two sources
(where radiation originates) - Emits gamma rays but will read X-rays
(backscatters) - Ionizing radiation from the removal of electrons due to
interactions with radiation
,●● LBP Hazard. Answer: ANY condition that causes exposure to lead
●● LBP inspection. Answer: a surface-by-surface investigation to
determine the presence of lead
●● CPSC. Answer: - Consumer Product Safety Commission - Set a lead
paint standard: cannot contain 0.06% lead by weight ... updated to
0.009% - The commission banned lead-based paint in 1978
●● True/False: Dust sampling only done for hazard assessments.
Answer: True; only risk assessors take samples to determine likelihood
of coming into contact with contaminants
●● What kind of sampling must be done for inspections?. Answer:
Random ... repeats must be annotated then you move onto the next
●● HUD Guidelines for abatement. Answer: Must last 20 years.
Includes the following procedures: - Removal - Enclosure - Replacement
- Encapsulation Painting over is a temporary fix!
●● Water standards for lead. Answer: - 15 ppb under the Clean Water
Act (CWA) - 5 ppb under the FDA standard (bottled water) *These are
the ONLY instances where ppb is used
, ●● Why was lead used so much?. Answer: - Durable - Colorful - Anti-
corrosive - Anti-fungal - Drying agent
●● What does RRP do?. Answer: - Renovation, Repairing, and Painting
program - Provided enforcement to Title X in 2010 ... $37,500 fines for
violation - Dust sampling technicians can only sample for RRP projects
●● What must you do if a pre-1978 site is not tested?. Answer: Presume
lead-based paint.
●● Where is LBP still allowed?. Answer: Commercial purposes/boats
●● What are the major industrial uses of lead?. Answer: Present -
Electrical batteries - Chemical additives Past - Paint additive - Gasoline
additive (now in soil ... doesn't permeate quickly, so sample TOP
portions (12 in)) - Solder/pipes
●● What are the common pathways of contamination?. Answer: - For
children under 6, hand-to-mouth contact from DUST ... lead tastes sweet
(pica is the term for consumption of non-food items) - For adults,
occupational exposure (take-home lead ... pets can contribute too)
●● Chronic vs. acute exposure. Answer: - Chronic: low dose, long
period - Acute: high dose, short period
