LEAD SUPERVISOR EXAM QUESTIONS
AND ANSWERS. VERIFIED 2026.
What is the lead dust clearance for Floors and carpet? - ANS 10 Micrograms per Square Foot
What is the lead dust clearance for interior window sills? - ANS 100 Micrograms per Square
Foot
What is the lead dust clearance for window troughs? - ANS 400 Micrograms per Square Foot
Abatements are designed to permanently eliminate lead-based paint hazards. What duration is
considered "permanent"? - ANS 20 Years
At what Blood Lead Level do you see increase in blood pressure, harmful effects on fetus; joint
and muscle aches - ANS 15 Micrograms per Deciliter
At what Blood Lead Level do you begin to see reproductive problems? - ANS 25 Micrograms
per Deciliter
At what Blood Lead Level do you see Kidney damage; damage to blood formation? - ANS 40
Micrograms per Deciliter
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,At what Blood Lead Level do you see Anemia; nerve damage; constipation; stomach pains;
irritability and fatigue; memory and concentration problems; clumsiness; drowsiness and sleep
problems? - ANS 60 Micrograms per Deciliter
At what Blood Lead Level do you see Blue line on gums; uncontrollable shaking of hands; wrist
and foot drop; hallucinations; brain damage; coma; death? - ANS 80 Micrograms per Deciliter
What is the lead dust clearance level for exterior concrete surfaces? - ANS 400 Micrograms
per Square Foot
What is the federal standard for paint (according to HUD) - ANS 1 Milligram per Square
Centimeter / 5,000 ppm / 0.5% by weight
What is the Federal Standard for Paint containing lead applied between 1978 and August 13,
2009? - ANS 0.06% (600ppm) by weight
What is the Federal Standard for Paint containing lead applied on or after August 14, 2009? -
ANS 0.009% (90ppm) by weight
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on floors
(carpeted and uncarpeted? - ANS 40 Micrograms per Square Foot
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on
interior window sills? - ANS 250 Micrograms per Square Foot
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on
window troughs (previously called window sills)? - ANS 400 Micrograms per Square Foot
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the Federal standard for lead dust levels for Hazard Screen Only on Floors? - ANS 10
Micrograms per Square Foot
What is the Federal standard for lead dust levels for Hazard Screen Only on Windowsills? -
ANS 125 Micrograms per Square Foot
What is the Federal standard for lead in bare residential soil for paving or removal? -
ANS 5,000 Micrograms per Gram / 5,000 ppm
What is the Federal standard for lead in bare residential soil for building perimeter and yard? -
ANS 1,200 Micrograms per Gram / 1,200 ppm
What is the Federal standard for lead in bare residential soil for play areas and high contact
areas for children? - ANS 400 Micrograms per Gram / 400 ppm
What is considered an elevated Blood Lead Level? Would cause CDC intervention level for
individual child. - ANS 10 micrograms per deciliter
What is the term for any US home built before 1978 - ANS Target Housing
What is considered a child occupied facility? - ANS Regularly visited by the same child 6 years
or younger, two days per week lasting 3 hours, or combined 6 hours per week, and provided
combined annual visits last at least 60 hours
What laboratory accreditation is required to test for lead? - ANS NLAP - National Lead
Laboratory Accreditation Program
What is the drinking water threshold? - ANS 15 ppb of Lead
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
AND ANSWERS. VERIFIED 2026.
What is the lead dust clearance for Floors and carpet? - ANS 10 Micrograms per Square Foot
What is the lead dust clearance for interior window sills? - ANS 100 Micrograms per Square
Foot
What is the lead dust clearance for window troughs? - ANS 400 Micrograms per Square Foot
Abatements are designed to permanently eliminate lead-based paint hazards. What duration is
considered "permanent"? - ANS 20 Years
At what Blood Lead Level do you see increase in blood pressure, harmful effects on fetus; joint
and muscle aches - ANS 15 Micrograms per Deciliter
At what Blood Lead Level do you begin to see reproductive problems? - ANS 25 Micrograms
per Deciliter
At what Blood Lead Level do you see Kidney damage; damage to blood formation? - ANS 40
Micrograms per Deciliter
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,At what Blood Lead Level do you see Anemia; nerve damage; constipation; stomach pains;
irritability and fatigue; memory and concentration problems; clumsiness; drowsiness and sleep
problems? - ANS 60 Micrograms per Deciliter
At what Blood Lead Level do you see Blue line on gums; uncontrollable shaking of hands; wrist
and foot drop; hallucinations; brain damage; coma; death? - ANS 80 Micrograms per Deciliter
What is the lead dust clearance level for exterior concrete surfaces? - ANS 400 Micrograms
per Square Foot
What is the federal standard for paint (according to HUD) - ANS 1 Milligram per Square
Centimeter / 5,000 ppm / 0.5% by weight
What is the Federal Standard for Paint containing lead applied between 1978 and August 13,
2009? - ANS 0.06% (600ppm) by weight
What is the Federal Standard for Paint containing lead applied on or after August 14, 2009? -
ANS 0.009% (90ppm) by weight
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on floors
(carpeted and uncarpeted? - ANS 40 Micrograms per Square Foot
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on
interior window sills? - ANS 250 Micrograms per Square Foot
What is the Federal standard for lead dust levels for Risk assessment by wipe sampling on
window troughs (previously called window sills)? - ANS 400 Micrograms per Square Foot
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, What is the Federal standard for lead dust levels for Hazard Screen Only on Floors? - ANS 10
Micrograms per Square Foot
What is the Federal standard for lead dust levels for Hazard Screen Only on Windowsills? -
ANS 125 Micrograms per Square Foot
What is the Federal standard for lead in bare residential soil for paving or removal? -
ANS 5,000 Micrograms per Gram / 5,000 ppm
What is the Federal standard for lead in bare residential soil for building perimeter and yard? -
ANS 1,200 Micrograms per Gram / 1,200 ppm
What is the Federal standard for lead in bare residential soil for play areas and high contact
areas for children? - ANS 400 Micrograms per Gram / 400 ppm
What is considered an elevated Blood Lead Level? Would cause CDC intervention level for
individual child. - ANS 10 micrograms per deciliter
What is the term for any US home built before 1978 - ANS Target Housing
What is considered a child occupied facility? - ANS Regularly visited by the same child 6 years
or younger, two days per week lasting 3 hours, or combined 6 hours per week, and provided
combined annual visits last at least 60 hours
What laboratory accreditation is required to test for lead? - ANS NLAP - National Lead
Laboratory Accreditation Program
What is the drinking water threshold? - ANS 15 ppb of Lead
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
