Expert Verifed Ace the Test
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 - Anti-fungal - 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
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