EPA Lead Risk Assessor Exam Study Guide Latest 2024 Update With 125 Questions and Verified Correct Answers Guaranteed Success
- different dwellings
- different components
- different locations
- from carpet and hard surfaces - CORRECT ANSWER: composite samples should be
collected separately for:
- does not contain aloe
- yields between 80% - 120% recovery rates
- blank wipes are less than 5 ug/wipe - CORRECT ANSWER: Acceptable Dust Wipe
criteria: 3
-building history -painting history -maintenance and management history -similar construction - CORRECT ANSWER: similar dwellings have common:
-main child play room -kitchen -bedroom of youngest child over 6 months
-bedroom of next oldest child - CORRECT ANSWER: Rooms to sample when
composite wipe sampling at a minimum: 4
- for each dwelling unit or 1 blank / 50 samples. Whichever is least - CORRECT
ANSWER: How many dust wipe blanks are needed?
1 per 50 samples analyzed - CORRECT ANSWER: How many spike samples are
needed per # of samples?
1,000
up to 50,000 ug/m3 - CORRECT ANSWER: Protection Factor of SCBA, lead
concentrations of?
1,200 ppm - CORRECT ANSWER: EPA Soil lead hazard in general yard area
1,200 ppm - CORRECT ANSWER: EPA Soil other parts of yard clearance/hazard level
1: Loading
- mass concentration - CORRECT ANSWER: 2 ways to describe the amount of lead in
dust:
- Making lead sinkers for fishing 1 / 2
- Casting your own bullets in the backyard
3. Recycling old car batteries - CORRECT ANSWER: Common hobbies/tasks that may
lead to introducing lead into the home?
- Minimize or eliminate generation of dust/debris
- Contain dust/debris in regulated work area
- Collect debris on disposable sheeting
4. Clean using wet methods and a HEPA vacuum - CORRECT ANSWER: Lead-Safe
Work Practices
- Start at corner with wipe fully opened
2. First pass: side-to-side in s pattern, fold in half
3. Second pass: Top-to-bottom s pattern, fold
- *ASTM* Third pass: Wipe around perimeter - CORRECT ANSWER: Describe the
dust wipe sampling method in steps: 4
- Targeted
- Random
3. Worst case - CORRECT ANSWER: What are the three types of criteria a risk
assessor can select for assessment of a dwelling?
1.0 mg/cm2 0.5% by weight
5000 ug/g - CORRECT ANSWER: 5000ppm is the same as..
3 shots on the 1.02 standard - CORRECT ANSWER: How do you calibrate an XRF?
3-10 subsamples per composite collected roughly along a straight line - CORRECT
ANSWER: Number of sub-samples per soil composite sample?
4 per composite sample - CORRECT ANSWER: how many wipes per composite
sample are allowed?
5 ug/dL - CORRECT ANSWER: Lead blood Level requiring investigation in children
5,000 ppm - CORRECT ANSWER: HUD required Level for soil abatement
10
up to 500 ug/m3 - CORRECT ANSWER: Protection Factor of a 1/2 face NPR, lead
concentrations of?
10 units or 20% - CORRECT ANSWER: What is minimum # of dwellings to sample
when using targeted/worse case in a multi-family of 23 units?
13 - CORRECT ANSWER: How many dust samples are usually taken for a Risk
Assessment?
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