EPA LEAD INSPECTOR
COMPLETE QUESTION SET WITH VERIFIED
SOLUTIONS GRADED A+
Question 1.
Define substrate
ANSWER
the material underneath the paint. Many substrates exist, but the HUD guidelines recommend
classifying into one of the 6 substrates:
1. Brick
2. Concrete
3. Drywall
4. metal
5. Plaster
6. Wood
Question 2.
Define dust-spiked sample
ANSWER
A dust-spiked sample is defined as a wipe or filter containing a known weight of lead-based
paint dust, measured to the NEAREST 0.1µg of lead dust. A dust-spiked sample is prepared in a
lab with the amount of lead-based dust present being between 50 to 1,000 µg.
If the lab fails to obtain readings within the QA/QC error limits (80-120%), TWO more spiked
samples should be sent immediately to the lab for analysis. If either of the 2 additional spiked
samples fail, the sample batch should be considered INVALID.
Question 3.
What is a reeevaluation?
ANSWER
The combination of a visual assessment and collection of dust and, as appropriate, soil
samples performed by a certified risk assessor to determine if the housing is free of lead-based
paint hazards, and determine whether previously implemented lead-based paint hazard
control measures are still effective.
,Question 4.
What does " exclusive use" category apply to?
ANSWER
USDOT has an "exclusive use" category that would apply to most portable XRF analyzers.
Exclusive use means that a single company or individual is responsible for transportation of
the device and has control during the transportation.
Question 5.
Interior window sill
ANSWER
The portion of the horizontal window ledge that protrudes into the interior of the room,
adjacent to the window sash when the window is closed; often called the window stool.
Question 6.
Target Housing
ANSWER
Any housing constructed before 1978 - except dwellings that do not contain bedrooms, or
dwellings that are designated specifically for the elderly or persons with disabilities, unless a
child younger than 6 resides or is expected to reside in the dwelling. In the case of jurisdictions
that banned the sale or use of lead based paint before 1978, the Secretary of HUD may
designate an earlier date for defining target housing.
Question 7.
What is a testing combination made up of?
ANSWER
1. room equivalent
2. component
3. substrate
,Question 8.
What is the MINIMUM number of components of a given type that must be tested in Multifamily
housing?
ANSWER
At least 40 components of a given type must be tested in order to obtain the desired level of
confidence in the results throughout the multifamily housing development. IF fewer than 40
combinations of a given component type are tested, additional combinations of that
component type will need to be tested.
Question 9.
What is the importance and process of laboratory analysis for lead?
ANSWER
In the case of analysis of samples of lead in paint, dust or soil in target housing or pre-1978
child-occupied facilities, the laboratory must be recognized by NLLAP.
Among the methods used by these laboratories for determining lead content are atomic
absorption spectroscopy (AAS), inductively coupled plasma emission spectroscopy (ICP), or
laboratory based K or L X-ray fluorescence, or an equivalent method.
Question 10.
On the multifamily housing -Component type report form, what should be recorded for each
component type?
ANSWER
Record the number and percentage of testing combinations classified as either
1. Positive for lead based paint
2. inconclusive and having XRF readings less than the midpoint of the XRF's inconclusive range
(low inconclusive)
3. Inconclusive range and having XRF readings equal to or greater than the midpoint of the
XRF's inconclusive range (high inconclusive)
4. negative for lead-based paint.
Question 11.
Milligram (mg) to gram conversion
ANSWER
Milligram; 1/1000 of a gram.
, Question 12.
Apron
ANSWER
Wood facing below the sill on windows, in the corner formed at the wall surface
Question 13.
Field Blank Sample
ANSWER
A clean sample of the matrix (e.g., filter, or wipe) that has been exposed to the sampling
conditions; returned to the laboratory; and analyzed as an environmental sample. Clean quartz
sand, air sampling filters and cassettes, and clean wipes can be used as field blanks. The field
blank, which should be treated just like the sample, indicates possible sources of
contamination.
Question 14.
If a development was built in 1962 with 522 similar units, how many units would be tested?
(reference table)
ANSWER
28 units
Question 15.
Research conducted by the national institute of standards and technology
(NIST) and HUD demonstrates that all XRF instruments exhibit substrate biases that depend upon...
ANSWER
1. the instrument used
2. the nature of the substrate
3. The level of lead in the paint
4. possible other factors such as source age, temperature and humidity
Question 16.
What does the abbreviation A2LA stand for?
ANSWER
American Association for Laboratory Accrediation
COMPLETE QUESTION SET WITH VERIFIED
SOLUTIONS GRADED A+
Question 1.
Define substrate
ANSWER
the material underneath the paint. Many substrates exist, but the HUD guidelines recommend
classifying into one of the 6 substrates:
1. Brick
2. Concrete
3. Drywall
4. metal
5. Plaster
6. Wood
Question 2.
Define dust-spiked sample
ANSWER
A dust-spiked sample is defined as a wipe or filter containing a known weight of lead-based
paint dust, measured to the NEAREST 0.1µg of lead dust. A dust-spiked sample is prepared in a
lab with the amount of lead-based dust present being between 50 to 1,000 µg.
If the lab fails to obtain readings within the QA/QC error limits (80-120%), TWO more spiked
samples should be sent immediately to the lab for analysis. If either of the 2 additional spiked
samples fail, the sample batch should be considered INVALID.
Question 3.
What is a reeevaluation?
ANSWER
The combination of a visual assessment and collection of dust and, as appropriate, soil
samples performed by a certified risk assessor to determine if the housing is free of lead-based
paint hazards, and determine whether previously implemented lead-based paint hazard
control measures are still effective.
,Question 4.
What does " exclusive use" category apply to?
ANSWER
USDOT has an "exclusive use" category that would apply to most portable XRF analyzers.
Exclusive use means that a single company or individual is responsible for transportation of
the device and has control during the transportation.
Question 5.
Interior window sill
ANSWER
The portion of the horizontal window ledge that protrudes into the interior of the room,
adjacent to the window sash when the window is closed; often called the window stool.
Question 6.
Target Housing
ANSWER
Any housing constructed before 1978 - except dwellings that do not contain bedrooms, or
dwellings that are designated specifically for the elderly or persons with disabilities, unless a
child younger than 6 resides or is expected to reside in the dwelling. In the case of jurisdictions
that banned the sale or use of lead based paint before 1978, the Secretary of HUD may
designate an earlier date for defining target housing.
Question 7.
What is a testing combination made up of?
ANSWER
1. room equivalent
2. component
3. substrate
,Question 8.
What is the MINIMUM number of components of a given type that must be tested in Multifamily
housing?
ANSWER
At least 40 components of a given type must be tested in order to obtain the desired level of
confidence in the results throughout the multifamily housing development. IF fewer than 40
combinations of a given component type are tested, additional combinations of that
component type will need to be tested.
Question 9.
What is the importance and process of laboratory analysis for lead?
ANSWER
In the case of analysis of samples of lead in paint, dust or soil in target housing or pre-1978
child-occupied facilities, the laboratory must be recognized by NLLAP.
Among the methods used by these laboratories for determining lead content are atomic
absorption spectroscopy (AAS), inductively coupled plasma emission spectroscopy (ICP), or
laboratory based K or L X-ray fluorescence, or an equivalent method.
Question 10.
On the multifamily housing -Component type report form, what should be recorded for each
component type?
ANSWER
Record the number and percentage of testing combinations classified as either
1. Positive for lead based paint
2. inconclusive and having XRF readings less than the midpoint of the XRF's inconclusive range
(low inconclusive)
3. Inconclusive range and having XRF readings equal to or greater than the midpoint of the
XRF's inconclusive range (high inconclusive)
4. negative for lead-based paint.
Question 11.
Milligram (mg) to gram conversion
ANSWER
Milligram; 1/1000 of a gram.
, Question 12.
Apron
ANSWER
Wood facing below the sill on windows, in the corner formed at the wall surface
Question 13.
Field Blank Sample
ANSWER
A clean sample of the matrix (e.g., filter, or wipe) that has been exposed to the sampling
conditions; returned to the laboratory; and analyzed as an environmental sample. Clean quartz
sand, air sampling filters and cassettes, and clean wipes can be used as field blanks. The field
blank, which should be treated just like the sample, indicates possible sources of
contamination.
Question 14.
If a development was built in 1962 with 522 similar units, how many units would be tested?
(reference table)
ANSWER
28 units
Question 15.
Research conducted by the national institute of standards and technology
(NIST) and HUD demonstrates that all XRF instruments exhibit substrate biases that depend upon...
ANSWER
1. the instrument used
2. the nature of the substrate
3. The level of lead in the paint
4. possible other factors such as source age, temperature and humidity
Question 16.
What does the abbreviation A2LA stand for?
ANSWER
American Association for Laboratory Accrediation
