EPA Risk assessor WITH 100% CORRECT ANSWERS

At which of the following ages are children in the most danger of lead exposure and the health effects from that exposure? 1-3 years of age Lead may be absorbed through the intestines after it is ingested. What is the effect on the absorption of lead when people don't eat properly? More lead is absorbed Which of the following is a major source of lead exposure for infants and children? Lead contaminated surface dust and soil. For children that are exposed to low levels of lead, which of the following body systems is most affected? The central nervous system Dust sampling during a Risk Assessment may include all of the following except: The top step leading to the front door of the house. Where is lead stored in the body for the longest period of time? in the bones Which of the following is an example of a structural defect that can cause paint failure? Leaking roof Which of the following is an example of a substrate defect that can cause paint failure? Plaster that has separated from wood lath Which of the following is an example of a finish defect that can cause paint failure? Grease on a kitchen wall When should a risk assessor avoid recommending interim controls as a hazard control option? When the substrate or component is defective. Which activity is most likely to cause lead levels in the air to exceed the PEL? Heat guns operating at temperatures greater than 1100° When does a risk assessor perform air sampling? Never during a risk assessment. Which of the following abatement options is most likely to cause a dangerous lead exposure to lead abatement workers? Paint removal What is the best way to reduce lead hazards in the home? Use a combination of interim controls or removal, replacement, encapsulation, and/or enclosure of lead-based paint. Which of the following methods is best for cleaning-up lead dust? HEPA vacuuming and tri-sodium phosphate cleaning cycles. Which of the following types of environmental sampling is optional in a complete risk assessment? water When sampling multi-family housing, what information is used to select the "worst case" units? Visual assessment during a walkthrough of every unit. According to the EPA/HUD, what are considered acceptable levels of lead in soil for play areas? Lead concentrations less than 400 ppm. When is a lead hazard screen most appropriate? Housing in good physical condition. If some painted surfaces are not sampled during a risk assessment, which of the following is true. Paint should be considered lead-based paint until tested. Bare soil along the "drip line" with lead at 2,000 ppm can be treated by: Covering the bare soil with mulch, sod, or gravel. If a composite paint chip sample is made of four sub-samples, what is considered the critical level of lead in the sample as expressed in ppm? 1250 ppm What is the maximum number of paint chips that can be included in a composite, paint chip sample? 5 Which of the following information is not useful for risk assessments Geographical location of the property A Risk Assessment may include the following questions to the residents except Where do they go to Church? What is the maximum number of dust wipes that can be included in a composite dust wipe sample? 4 Interim controls may include all of the following except: Removal and replacement of windows A lead-based paint hazard, as defined in 40 CFR Part 745 Subpart D, includes which one of the following? Any "chewable" surface painted with LBP that has teeth marks Which of the following is an objective of a risk assessment? To establish hazard controls that may include abatement. What is necessary before using "targeted" sampling in multi-family Project information from the owner. When is paint classified as "intact"? When deterioration is less than the di minimis levels When could XRF test results be useful in a risk assessment report? When the XRF testing was performed according to proper protocol. What is the best way to determine if a laboratory can accurately measure the amount of lead in a wipe sample? Submit "blind", spiked samples with a known amount of lead dust On-going monitoring should include: Visual assessment of the property and dust wipe sampling. A Risk Assessor does not need to: Use an XRF instrument for a risk assessment. The primary goal of an Elevated Blood Level (EBL) investigation is to: Find the source of the lead poisoning. At what blood lead level in a child under age six does the CDC recommend an environmental evaluation? One test of 20 ug/dl or greater or repeated tests between15 ug/dl and 19 ug/dl For sampling in multi-family properties, what are the three methods of unit selection? Target, worst case, random. Unless state law provides otherwise, what is the risk assessor's role in educating occupants about the lead hazards of the property being evaluated? The risk assessor should provide the client information about lead poisoning and prevention and encourage him or her to share the information with occupants. 46. When does a risk assessor collect paint chip samples or perform XRF testing When the paint is deteriorated. When is clearance testing required? After abatement or when renovations may disturb lead-based paint Di minimis measurements for deteriorated paint are: 2 ft2 per interior room, 20 ft2 of exterior surfaces, 10% of component area. A moisture meter may be useful in a Risk Assessment because it can: Measure moisture in substrates. When selecting units for targeted and worst case sampling, how does the risk assessor treat units known to contain children with EBLs? Units with EBLs are added to the total number after communicating with the Health Department.