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Lead IA Exam Practice Questions and
Answers
which federal agencies are actively involved in developing lead regulations and policies? - ✔ EPA, OSHA, HUD what role does OSHA play in the prevention of lead poisoning? - ✔ inspects job sites for worker safety and sets standards for worker protection Three are REQUIRED by OSHA for exposures over the lead PEL - ✔ - written compliance program
- respirators and protective clothing
- hygiene facilities (hand-washing/showers when feasible) In CA, what regulatory agency developed a certification program for lead-related construction work? - ✔ DHS T/F, the only requirement for DHS certification is that you pass the exam at the end of the DHS-approved training course -
✔ False Which is the primary agency regulating lead-contaminated waster disposal? - ✔ In CA, Division of Toxic Substances Control within Cal/EPA. Outside of CA, EPA. in general, before disturbing lead painted surfaces, a contractor will need to - ✔ - train workers
- develop a written respiratory protection program
- develop a compliance program specific to the job site ______________________ must be made available to employees covered by a medical surveillance program - ✔ medical examination by a physician Under OSHA, who must be in lead medical surveillance programs? - ✔ persons exposed >30 days above 30 ug/m the XRF analyzer was selected by HUD for lead based paint testing primarily because - ✔ it may be the most cost effective technique paint samples that test "inconclusive" by XRF should have confirmatory samples redone by - ✔ atomic absorption analysis
HUD wipe sampling procedure requires - ✔ - sample on horizontal surfaces only
- is possible, sample an area of approximately 1 ft
- submit at least one field blank with each sample new EPA requirements for clearance wipe sampling for floors, interior window sills and exterior window troughs - ✔ 40, 250, 200 ug/ft what is the HUD definition of lead-containing paint on painted surfaces by atomic absorption laboratory analysis (AA) and XRF? - ✔ lab=0.5% by weight; XRF=1.0 mg/cm why are field test kits such as sodium sulfide and rhodizonate controversial? - ✔ they produce false +/- and require color distinctions put lead dust wipe samples into - ✔ hard shelled container such as a centrifuge tube put lead paint chip samples into - ✔ centrifuge tubes (if results must be expressed in mg/cm2) or soft container like plastic baggie if results may be expressed in percent by weight or ppm
three steps in dust wipe sampling - ✔ - measure sample area exactly
- wear new gloves for every sample collected
- wash hands common in-place management program for controlling lead hazards - ✔ - plans to protect tenants when small repairs/maintenance projects are done that disturb lead surfaces
- education of tenants about lead hazards
- respirator training for some workers in-place management activities may be appropriate when - ✔ - all IDed lead-based paint is intact
- dust lead levels are below clearance levels
- no residents have EBBL at a minimum, what work practices must be used for interim control work? - ✔ - wet methods and HEPA vacuums, containment depends on amount and type of work in general, in what order would you conduct a lead dust cleanup? - ✔ start at the rear of a building and work forward and down cleaning the highest horizontal surfaces first, and move from clean to dirty areas
- interior window casings and mullions on the same window - ✔ - interior casings, stops, jambs, and aprons on the same window three of these are parts of a window. which is not?
- mullions
- stringer
- sash
- apron - ✔ stringer 3 steps listed in the HUD guidelines for conducting lead paint inspections - ✔ - inventory of painted surfaces
- perform calibration checking as part of XRF testing
- collect paint chip samples for areas inconclusive XRF results The XRF Performance Characteristics Sheet for a particular XRF will tell you - ✔ - what test readings indicate +/- and inconclusive results
- whether or not substrate corrections must be done and on which surfaces
- specific procedures for checking calibration at a minimum, when should you do XRF calibration check readings - ✔ - before the inspection begins
- after the inspection is completed or at least every 4 hours
There are 18 units in an apartment complex built in 1957. How many units would you need to inspect if there was lead paint in the units? - ✔ 100% bc under 20 units T/F when conducting a lead inspection in a multifamily housing, if you test 40 or more wood doors, you may use the sample results for that group of doors to determine whether all unsampled wood doors are positive or negative for lead - ✔ True what is meant by "high inconclusive" in XRF testing - ✔ the XRF reading is above the midpoint but within the inconclusive range for that XRF what may trigger an inspection of a private home for lead paint - ✔ - EBLL
- pending sale of the property
- public awareness of lead risk at a minimum, which should be discovered in a standard lead paint inspection?
- contaminated water source
- mothers bf works at a battery recycling plant
pregnant women who disturb lead-based paint - ✔ need to be very careful because they transfer lead to the developing infant once lead is stored in the bone, it - ✔ must be considered in evaluation the long-term health threat of lead In adults lead poisoning may cause - ✔ - reproductive problems which would be considered a normal blood lead level in an adult - ✔ 6 ug/dL how are most children poisoned by lead - ✔ ingestion of lead dust which blood test is currently preferred for screening for low level lead exposure - ✔ blood lead level the most important safety practice for lead inspectors - ✔ wash hands after taking samples the 2 key controls for radiation exposure are -
✔ shielding, exposure time, distance what type of radiation used in an XRF can pass through solid walls and door - ✔ gamma radiation the maximum annual full body dose of radiation allowed for adults over 18 yo - ✔ 5.0 REM the source of lead contamination in drinking water may be - ✔ faucets, solder on copper pipe connections, service lines a lab gives you a floor dust sample results of 0.65mg/ft2. does this example exceed HUD/EPA risk assessment levels? - ✔ No, since 0.65 mg/ft2 is way below risk assessment levels a 1 g sample of paint contains 100 mg of lead. what is the percent lead by weight - ✔ 10% respirators should be tested and approved by - ✔ National Institute for Occupational Safety and Health (NIOSH) and the Mine Safety and Health Admin. (MSHA) the primary advantage of a powered-air-purifying respirator (PAPR) is -
