EPA RISK ASSESSOR FINAL PAPER EXAM 2026
COMPLETE QUESTIONS AND VERIFIED
SOLUTIONS
◉ False, XRF is most commonly used to determine LBP but not
hazards Answer: XRF analysis is the most common method for
determining lead hazards
◉ Performance Characteristic Sheet (PCS) supplied with the XRF
Answer: Where would you find operational data for an XRF?
◉ 13 Answer: How many dust samples are usually taken for a Risk
Assessment?
◉ Removal
Enclosure
Encapsulation Answer: What are the three forms of lead abatement?
◉ 3 shots on the 1.02 standard Answer: How do you calibrate an
XRF?
◉ Beginning
,End
Every 4 hours
Every time the device is powered down Answer: How often do you
calibrate an XRF?
◉ Equal to or greater than 1.0 mg/cm2 Answer: LBP per XRF
◉ Greater than 0.5% by weight Answer: LBP % level by paint chip
analysis
◉ 40 ug/ft2 Answer: EPA Floor clearance/hazard level
◉ 250 ug/ft2 Answer: EPA Window sill or stool clearance/hazard
level
◉ 400 ug/ft2 Answer: EPA Window trough or well clearance/hazard
level
◉ 50 ug/m3 Answer: OSHA lead PEL
◉ 30 ug/m3 Answer: OSHA lead Action Level
, ◉ 400 ppm Answer: EPA Soil play area/vegetable garden
clearance/hazard level
◉ 1,200 ppm Answer: EPA Soil other parts of yard clearance/hazard
level
◉ 5,000 ppm Answer: HUD required Level for soil abatement
◉ greater than 15 ppb or 15ug/l or 0.015mg/l Answer: EPA action
level criteria for lead in drinking water
◉ 5 ug/dL Answer: Lead blood Level requiring investigation in
children
◉ A single LBL reading above 20 ug/dL or two consecutive readings
between 15-19 ug/dL.
(Consecutive readings must be taken at least 3 months apart)
Answer: Lead poisoned criteria
◉ 50 ug/dL Answer: OSHA medical removal level for lead in adult
worker blood
-same as PEL
COMPLETE QUESTIONS AND VERIFIED
SOLUTIONS
◉ False, XRF is most commonly used to determine LBP but not
hazards Answer: XRF analysis is the most common method for
determining lead hazards
◉ Performance Characteristic Sheet (PCS) supplied with the XRF
Answer: Where would you find operational data for an XRF?
◉ 13 Answer: How many dust samples are usually taken for a Risk
Assessment?
◉ Removal
Enclosure
Encapsulation Answer: What are the three forms of lead abatement?
◉ 3 shots on the 1.02 standard Answer: How do you calibrate an
XRF?
◉ Beginning
,End
Every 4 hours
Every time the device is powered down Answer: How often do you
calibrate an XRF?
◉ Equal to or greater than 1.0 mg/cm2 Answer: LBP per XRF
◉ Greater than 0.5% by weight Answer: LBP % level by paint chip
analysis
◉ 40 ug/ft2 Answer: EPA Floor clearance/hazard level
◉ 250 ug/ft2 Answer: EPA Window sill or stool clearance/hazard
level
◉ 400 ug/ft2 Answer: EPA Window trough or well clearance/hazard
level
◉ 50 ug/m3 Answer: OSHA lead PEL
◉ 30 ug/m3 Answer: OSHA lead Action Level
, ◉ 400 ppm Answer: EPA Soil play area/vegetable garden
clearance/hazard level
◉ 1,200 ppm Answer: EPA Soil other parts of yard clearance/hazard
level
◉ 5,000 ppm Answer: HUD required Level for soil abatement
◉ greater than 15 ppb or 15ug/l or 0.015mg/l Answer: EPA action
level criteria for lead in drinking water
◉ 5 ug/dL Answer: Lead blood Level requiring investigation in
children
◉ A single LBL reading above 20 ug/dL or two consecutive readings
between 15-19 ug/dL.
(Consecutive readings must be taken at least 3 months apart)
Answer: Lead poisoned criteria
◉ 50 ug/dL Answer: OSHA medical removal level for lead in adult
worker blood
-same as PEL
