EPA Lead Inspector (Actual Test 100% verified; correctly solved)

Lead-based paint (LBP) correct answers 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 answers - 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 answers - 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 answers - AAS (Atomic Absorption Spectrometry) - Sample is placed into a furnace and vaporized ... light is shone through to give a quantitative result XRF correct answers - 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 answers ANY condition that causes exposure to lead LBP inspection correct answers a surface-by-surface investigation to determine the presence of lead CPSC correct answers - 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 correct answers True; only risk assessors take samples to determine likelihood of coming into contact with contaminants What kind of sampling must be done for inspections? correct answers Random ... repeats must be annotated then you move onto the next HUD Guidelines for abatement correct answers Must last 20 years. Includes the following procedures: - Removal - Enclosure - Replacement - Encapsulation Painting over is a temporary fix! Water standards for lead correct answers - 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