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OHIO Lead Risk Assessor Final Exam Version 2 Newest 2025/2026 Actual Exam Complete 150 Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!
What are the three main reasons for using wipe samples to determine lead dust hazards? - ANSWER-Cheap, easy, and fast/effective
Why do we not use micro-vacuuming for dust? - ANSWER-Because results are unreliable and inconsistent
Why do we wear gloves when taking wipe samples? - ANSWER-So that our hands don't contaminate the sample
How often do we change gloves when sampling? - ANSWER-Before collecting each sample
When we put the gloves on, what surface may we touch with either hand? - ANSWER-The sample area, the template, and the sample tube
What type of gloves should we not use? - ANSWER-Powder gloves 1 / 3
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What type of wipe may we use? - ANSWER-Wipes developed under ASTM standards (Ghostwipe and Leadwipe)
What is the concept of recovery rates when selecting wipes? - ANSWER-How much of the sample can the lab get out of the tub to actually test
What type of container should we use for the wipe and why do we use this? - ANSWER-Non-rigid containers so that the lab doesn't have to transfer the sample to test it
We make three passes when performing wipe samples. What are they? - ANSWER-Top-to-bottom then side-to-side in "S" motion to cover entire sample area Around the perimeter of sample area
What is the minimum size of a dust wipe area? - ANSWER-0.10 ft^2
What if there are paint chips present where we sample during a risk assessment? - ANSWER-If it sticks to the wipe, include it, but if it doesn't, don't make an effort to
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What if we sample and there still appears to be dust present where we sampled? - ANSWER-You could use another wipe and put it in the same tube, but it is not required
We wipe a window sill that is 2"x20". The lab finds 60 ug for lead in the wipe we sent them. How many ug/ft^2 was on the sill that we wiped? - ANSWER-216 ug/ft^2
What laboratory method is used to analyze wipe samples? - ANSWER- Atomic absorption spectrometry
What accreditation must the lab have? - ANSWER-NLLAP (National Lead Laboratory Accreditation Program)
According to HUD guidelines, how often should we provide the lab with spiked samples or blanks? - ANSWER-Every home you sample
Where should we take soil samples? - ANSWER-In areas of bare soil
How many and how should we space soil sub-samples? - ANSWER- Collect 3-10 soil cores for one composite soil sample and space them evenly
How deep do we typically sample in the soil? - ANSWER-Top 5/8th inch
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