EPA Lead Risk Assessor Exam Study Guide Updated Version 2023 2024 100% Complete With Questions and Correct Answers
- 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
ANSWERHow many dust wipe blanks are needed?
- 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
- 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
- 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
4. *ASTM* Third pass: Wipe around perimeter - CORRECT ANSWER Describe the dust
wipe sampling method in steps: 4
- Targeted
- Random
- 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..
- 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 ANSWERNumber of sub-samples per soil composite sample?
- per composite sample - CORRECT ANSWER how many wipes per composite sample
are allowed?
- 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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