Lead Risk Assessor Questions and Answers Already Passed

Lead Risk Assessor Questions and Answers Already Passed True or False you should always include inconclusive lead results in a HUD report. False, never include inconclusive results True or False, at home test kit results can only be included in a report if they indicate that a home has lead. False, at home test kits can only be included in reports if the results are negative. Painted wall sockets, switches and plates, and walls are an example of what? Testing combination Risk Assessor conducts risk assessments, samples for the presence of lead in dust + soil for the purpose of abatement clearance testing. 2017 Clearance Levels (HUD) Interior Floors 10 ug/ft^2 Porch Floors 40 ug/ft^2 Sills 100 ug/ft^2 Troughs 100 ug/ft^2 Child occupied facility Anywhere a child spends a minimum 2 days a week, 3 days in a week, 6 hours a visit and 60 hours a year. Substrates wood, metal, plaster, concrete Dripline Area w/in 3 ft surrounding perimeter of building Impact surface an interior or exterior surface that is subject to damage from repeated impacts (parts of door frames) Lead Based Paint (check) paint or other surfaces that contain: 1. 1 ug/cm^2 2. 0.5% by weight 3. 5,000 mg/g Mid-yard Midway between the drip line of a residential building and nearest property boundary Permanently Covered Soil pavement or concrete, NOT grass, mulch or gravel Lead Hazard Screen purpose of screen is to determine if full risk assessment is needed. Includes a visual inspection, testing of deteriorated paint and at LEAST 2 dust samples Percentage of lead housing 90% of housing built 1940 80% of housing built 1959 62% of housing built 1972 Where is the greatest threat of lead contamination? Dripline What type of water is more corrosive for lead pipes? Hot "soft" water is more corrosive Symptoms of acute lead poisoning - abdomen pain - constipation - irritability - fatigue - weakness Title X (1992) Lead based paint hazard reduction act Adult EBLL Greater than or equal to 40 ug/dL Blood tests required every 2 months until 2 tests 40 ug/dL. Civil Liability Statutory law Administrative law common law Tort law - negligence True or False, HUD does not consider intact lead based paint as a lead-based paint hazard? True, as long as the paint is not deteriorated Soil lead hazard action level (HUD) 400 ppm What is considered bare soil? Area with more than 9ft ^2 of soil Abatement Any measure or set of measures designed to permanently eliminate lead-based paint hazards. Includes encapsulation and enclosure What are the EPA post abatement clearance standards? Uncarpeted floors 40 ug/ft^2 Window Sills 250 ug/ft^2 Window Troughs 400 ug/ft^2 Target Housing (according to HUD) Any house built prior to 1978 2017 Dust-Lead Action Levels (HUD) Floors = 10 ug/sf Window Sills = 100 ug/sf True or False, In Hawaii the lead risk assessor needs to be re-certified every 5 years? False, every 3 years. Action level for safe drinking water act. 15 ug/l OSHA action level for lead air contamination 30 g/m^3 as an 8-hour TWA At or above the action level for air, OSHA requires what to take place? - Training about the hazards of lead - make available medical surveillance - establish a monitoring program to determine who was exposed - recheck employee at least every 6 months Permissible Exposure Limit (PEL) the maximum legal limits established by OSHA for regulated substances. These are based on employee exposure that is time weighted over an 8 hour time waited average (TWA). When these limits are exceeded, employers must take proper steps to reduce employee exposure. For lead, the PEL is 50 mg/m^3 of air. If an employee exposure is at or above the PEL for lead in air what must their employer do? - provide employees with appropriate respiratory protection and personal protective equipment - provide areas for workers to change out of their work clothes - provide hand and face washing facilities - conduct biological monitoring - establish a written lead compliance program - post warning signs around the workplace How much medical removal protection must an employer given an employee to be removed for medical protection after each time an employee is placed on medical leave? 18 months after each exposure Consumer Product Safety Commission (CPSC) allowable lead level for children's products? .010% (100 ppm) as of 2011 What year did lead soder stop being used in canned food? 1970 How is lead eliminated from the bod? Very slowly through the kidneys and gastrointestinal tract. Which federal law governs waste disposal? Resource Conservation and Recovery Act (RCRA) of 1976 False negative failure to detect lead contamination when contamination exists False positive detection of lead contamination when no lead exists What are XRF Performance Characteristic Sheets used for? To correct for substrate bias What is the minimum number of samples needed to calculate substrate bias? 6 What is loading? The lead based paint surface concentration True or False, in a lead hazard screen or risk assessment, the certified risk assessor tests only painted surfaces in deteriorated condition for their lead content. TRUE, they only test deteriorated paint True or False, performing inspections by the sole use of lab paint-chip analysis is recommended because it is more accurate. False, it is not recommended because it is time-consuming, costly and requires extensive repainting. When is paint chip sampling recommended? When areas are inaccessible or building components have an irregular shape. How are laboratory paint chip samples reported? mg/cm^2 How to conduct random sampling. Housing Unit # = Random # * Total Number 9.92055 = 0.*50 --- round up to 10, 10th unit on the list of units. Three types of test results. Positive, negative, inconclusive. What is the correct size of a paint chip sample? 4 in^2 Surface-by-surface is in reference to what? Lead based paint HUD 2012 clearance standards Floors 40 ug/ft^2 Window Sills 250 ug/ft^2 Window Wells 400 ug/ft^2 According to HUD, the greatest number of dust wipe samples is recommended when... ...on site paint removal has occurred throughout the unit. The laboratory reports 0.08 mg of lead on a wipe taken from a window sill of area of 3 inches (.25 ft) by 2 ft. 6in (2.5 ft). What is the concentration of lead in the dust? 0.25 * 2.5 = 0.625 ft^2 0.08 * 1000 = 80 mg 80/0.625 = 128 mg/ft^2 3 sources of lead in soil 1. chalking or weathering 2. airborne contamination from leaded gasoline 3. contamination from point sources of airborne lead such as lead smelters What are the EPA limits concerning lead in soil? 400 ppm for in a child's play area and 1,200 for other bare soil on property. Sources of lead in water 1. Homes with copper plumbing or lead/tin sodder, especially homes less than 5 years old 2. Lead service lines which may leak into water 3. Lead is in the water itself. True or False, according to HUD a lead risk inspector is never has to test for lead in water. False, it's not required but it may be requested by the home owner. What type of respirators should be used when respiratory protection is needed? NIOSH/MSHA TRUE or FALSE the concentration of lead in the air determines what type of respirator should be used. TRUE, this is how it is decided which type of mask to use Atomic Absorption method of measuring elements such as lead. The four characteristics of hazardous waste Ignitability, corrosivity, reactivity and toxicity What performance criteria are used for dust wipes? ASTM E 1792 What's the smallest area a dust wipe can be used to sample? 0.1 sq ft or 4in x 4in TRUE or FALSE, dust sampling should never be done prior to paint chip sampling. FALSE, it should always be done prior True or False, a screened in porch is not considered a room? False, screened in porches are considered a room if used as a living area. Objective of a risk assessment To determine and then to report the existence, nature, severity and location of lead-based paint hazards in housing through an on-site investigation and the possible means of correcting any hazards identified.