EPA Lead Inspector exam questions anda answers

EPA Lead Inspector Lead-based paint (LBP) - ANSWER 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 - ANSWER - 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 - ANSWER - 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 - ANSWER - AAS (Atomic Absorption Spectrometry) - Sample is placed into a furnace and vaporized ... light is shone through to give a quantitative result XRF - ANSWER - 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 - ANSWER ANY condition that causes exposure to lead LBP inspection - ANSWER a surface-by-surface investigation to determine the presence of lead CPSC - ANSWER - 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 - ANSWER True; only risk assessors take samples to determine likelihood of coming into contact with contaminants What kind of sampling must be done for inspections? - ANSWER Random ... repeats must be annotated then you move onto the next HUD Guidelines for abatement - ANSWER Must last 20 years. Includes the following procedures: - Removal - Enclosure - Replacement - Encapsulation Painting over is a temporary fix! Water standards for lead - ANSWER - 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 Why was lead used so much? - ANSWER - Durable - Colorful - Anti-corrosive - Antifungal - Drying agent What does RRP do? - ANSWER - Renovation, Repairing, and Painting program - Provided enforcement to Title X in 2010 ... $37,500 fines for violation - Dust sampling technicians can only sample for RRP projects What must you do if a pre-1978 site is not tested? - ANSWER Presume lead-based paint. Where is LBP still allowed? - ANSWER Commercial purposes/boats What are the major industrial u