Exam (elaborations)
2024 WI Lead Risk Assessor Exam Questions and Answers
- Course
- Institution
2024 WI Lead Risk Assessor Exam
[Show more]
Content preview
2024 WI Lead Risk Assessor ExamEPA and WI DHS Lead Based Paint Definition - answer≥0.5%
≥1.0 mg/cm2
Nationally houses built before 1978_______ have lead based pain - answer75%
XRF - answerX-ray fluorescence
Factors that should be considered for XRF: - answer- Substrate Correction
- inconclusive range
- measuring K & L shell reading
What year was lead based paint banned? - answer1978
Only _______ areas that are in the scope of work from the contractor - answer testing
areas
Sampling requirements for Inside a home - answer Visual inspection
Less than 4 rooms = sampling all rooms
More than 4 rooms = minimum of four rooms sampled
Each room should have sampled: Floor Alternate between the tough and window sill
_______% confident for room amount with big complexes, with lots of rooms -
answer95%
Wait how long after any cleanup has been done - answeran hour
Sampling requirements for outside a home - answer-Have to do a visual inspection.
-Doesn't specify dust wipe sampling outside
-No requirements to have porch floor dust wiped - HUD requires it for particular projects
so it is expected to be done
-Soil Samples
Sampling requirements for soil samples (and max levels) - answer3-10 composite
samples in drip line
400 ppm is the threshold for children areas
1200 ppm for all other areas
HUD paint chip recommended size - answerRecommended HUD paint chip size is 2" X
2"
, What type of investigations can Lead risk assessor do - answer- clearances
- full inspection
- lead partial inspection
- lead-free inspections
- EBL
- Hazard Screening
- Lead-safe Investigations
How often should a leak/wipe test be done, and why? - answerevery 6 months - this
checks to see if there are leaks in the radioactive source shield
How often should you calibrate the XRF machine? - answerAt the beginning, every
fours, and at the end
NIST - answer(National Institute of Standards and Technology)
Set the SRM
Performance Characteristic Sheet (PCS) - answerProvides important information on
how to use the specific XRF
SRM - answer(Standard Reference Material) closest to 1.0 mg/cm2 and used to
calibrate the machine
Should have calibration range (first and second reading) between 0.8 - 1.2 mg/cm2 (+/-
0.2 mg/cm2) for Heuresis model. Each model is different. If out of range then should not
use the samples taken.
substrate bias/correction - answerwhat's below the paint
Newer machines do not need to substrate correction
Take apparent lead concentration (APL) - substrate equivalent lead (SEL) = corrected
lead concentration
APL - SEL = corrected lead concentration
Older machines would have inconclusive ranges for certain substrates (in PCS). If your
sample falls in between the inconclusive range then you will have to take a paint chip
sample, or assume it is lead paint.
6 substrates - answerBrick, concrete, drywall, metal, plaster, and wood
What is Badge/Ring/badge? How often send to lab? What type of exposure does it
measure? - answerWarn to measure radiation exposure.
Recommended every 3 months to send into the lab to monitor exposure
This measures chronic exposure NOT acute exposure
Substrate - answermaterial underneath paint
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now