EPA Lead Inspector Questions and Correct Answers/ Latest Update / Already Graded

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EPA Lead Inspector Questions and
Correct Answers/ Latest Update /
Already Graded
Lead-based paint (LBP) M M




Ans: Any varnish, shallac, or coating that contains either- 1.0 mg/cm2 -
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0.5 % by weight - 5000 ppm - Older instruments could not read accurately at
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0.7, so the lead standard was updated to 1.0
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Dust sample clearance values
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Ans: - Floors: 40 μg/ft2 > 10 μg/ft2 (10 μg/ft2 in NY) - Windows: 250 μg/ft2
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> 100 μg/ft2 (50 μg/ft2 in NY) - Window wells (troughs): 400 μg/ft2 (100 μg/ft2
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in NY) - Samples must be at 1 sq ft > 2 sq ft (can be reduced to 1 sq ft if within 10
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μg)
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EPA Soil Regulations
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Ans: - 400 ppm for playgrounds/children's areas - 1200 ppm for rest of yard -
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M There must be 9 sq ft of soil to classify with soil testing - At 5000 ppm, MUST
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remediate/abate (remove & replace, paving, or bioremediation)
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Lab sampling technique
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Ans: - AAS (Atomic Absorption Spectrometry) - Sample is placed into a
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M furnace and vaporized ... light is shone through to give a quantitative result
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XRF


Ans: - X-ray fluorescence - Utilizes radioactive isotopes (unstable material
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M trying to reach stability) - Cobalt-57 (half-life of 9 months) and cadmium-
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M 109 (half-life of 15 months) are the two sources (where radiation originates) -
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M Emits gamma rays but will read X-rays (backscatters) - Ionizing radiation from
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the removal of electrons due to interactions with radiation
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LBP Hazard
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Ans: ANY condition that causes exposure to lead
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LBP inspection
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Ans: a surface-by-surface investigation to determine the presence of
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CPSC


Ans: - Consumer Product Safety Commission - Set a lead paint standard:
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M cannot contain 0.06% lead by weight ... updated to 0.009% - The
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M commission banned lead-based paint in 1978
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True/False: Dust sampling only done for hazard assessments
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Ans: True; only risk assessors take samples to determine likelihood of
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M coming into contact with contaminants
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What kind of sampling must be done for inspections?
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