EPA LEAD INSPECTOR 2023 QUESTIONS WITH VERIFIED SOLUTIONS GRADED A+

Lead-based paint (LBP) - CORRECT ANS Any varnish, shallac, or coating that contains either- 1.0 mg/cm2 - 0.5 % by weight - 5000 ppm - Older instruments could not read accurately at 0.7, so the lead standard was updated to 1.0 Dust sample clearance values - CORRECT ANS - 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 - CORRECT ANS - 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 - CORRECT ANS - AAS (Atomic Absorption Spectrometry) - Sample is placed into a furnace and vaporized ... light is shone through to give a quantitative result XRF - CORRECT ANS - 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 - CORRECT ANS ANY condition that causes exposure to lead LBP inspection - CORRECT ANS a surface-by-surface investigation to determine the presence of lead