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EPA LEAD RISK ASSESSOR EXAM AND STUDY GUIDE
2024-2025 ACTUAL EXAM 120 STUDY QUESTIONS
WITH CORRECT DETAILED ANSWERS. GRADED A
2 ways to describe the amount of lead in dust: - ANS1: Loading
- mass concentration 5000ppm is the same as.. - ANS1.0 mg/cm 0.5% by weight 5000 ug/g A certified Risk Assessor may conduct a Risk assessment on a property which is to be abated by the firm for which they work, if they... - ANSNotify the client in writing A child may be treated for lead poisoning by using... - ANSchelation therapy A parent is concerned that their child may have ingested lead-based paint and wants to check the property for additional lead hazards. The homeowner informs you that the house was built in 1963 and is in poor condition. What is the appropriate service to provide? A. Lead-based paint inspection B. Risk Assessment C. Lead Hazard Screen - ANSB. Risk Assessment
A wipe sample you took came back from the lab with a lead result of 800ppm. What should you do? A. This paint is lead-based paint, note in your report and let the client know they have a lead paint in their property. B. Resample the area where you took the sample from. C. Call the lab and tell them they must report the results in mg/cm D. This paint is not lead-based paint, note the results in your report and let the client know. - ANSD. This paint is not lead-based paint, note the results in your report and let the client know. (LBP is greater than 5000ppm) Acceptable Dust Wipe criteria: 3 - ANS- does not contain aloe
- yields between 80% - 120% recovery rates
- blank wipes are less than 5 ug/wipe advantages and disadvantages of composite wipe sampling: 2 each - ANSAdvantages: -lower cost per sample -increased surface area per wipe Disadvantages: -lead dust in a specific location info is lost
Describe the dust wipe sampling method in steps: 4 - ANS1. Start at corner with wipe fully opened
- First pass: side-to-side in s pattern, fold in half
- Second pass: Top-to-bottom s pattern, fold
- ASTM Third pass: Wipe around perimeter EPA action level criteria for lead in drinking water - ANSgreater than 15 ppb or 15ug/l or 0.015mg/l EPA Floor clearance/hazard level - ANS40 ug/ft EPA Soil lead hazard in general yard area - ANS1,200 ppm EPA Soil other parts of yard clearance/hazard level - ANS1,200 ppm EPA Soil play area/vegetable garden clearance/hazard level - ANS400 ppm EPA Window sill or stool clearance/hazard level - ANS250 ug/ft EPA Window trough or well clearance/hazard level - ANS400 ug/ft How do you calibrate an XRF? - ANS3 shots on the 1.02 standard
How do you make spike samples? - ANSSpiked samples are manufactured in a laboratory environment
- If it is necessary to prepare spiked wipe samples, use the same brand of wet wipes that will actually be used in the field.
- Obtain a NIST Standard Reference Material containing a certified concentration of lead, or a traceable secondary standard with a known amount of lead in dust.
- Weigh out between 50 and 500 μg of lead (not total dust) to the nearest microgram.
- Insert spiked sample randomly into sample set (1 for 50 samples) How does lead primarily enter children's bodies? - ANSIngestion of lead dust How long must lead abatement last? - ANS20 years How long should water sit motionless before being sampled? - ANSAt least 6 hours, best time to sample is first thing in the morning how many composite soil samples are needed? - ANSat least 2 samples How many dust samples are usually taken for a Risk Assessment? - ANS How many dust wipe blanks are needed? - ANS1 for each dwelling unit or 1 blank / 50 samples. Whichever is least
troughs = <100ug/ft HUD required Level for soil abatement - ANS5,000 ppm If a dust wipe has a recovery rate of 65% is it acceptable to use? - ANSNo, the acceptable recovery rate is 80% - 120% If there are fewer than 5 dwellings and they do not have similar histories, you should assess... - ANSassess each dwelling individually Labs used by risk assessors must be certified by one of these two agencies: - ANSA2LA - American Association for Laboratory Accreditation AIHA - American Industrial Hygiene Association LBP % level by paint chip analysis - ANSGreater than 0.5% by weight LBP per XRF - ANSEqual to or greater than 1.0 mg/cm lead based paint is primarily in this type of paint - ANSoil paint Lead blood Level requiring investigation in children - ANS5 ug/dL lead in dust: loading is measured by? - ANSwipe sampling or vacuum sampling
lead in dust: mass concentration is measured by... - ANSusually measured by vacuum sampling only Lead poisoned criteria - ANSA single LBL reading above 20 ug/dL or two consecutive readings between 15-19 ug/dL. (Consecutive readings must be taken at least 3 months apart) Lead-Safe Work Practices - ANS1. 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 Minimum # of dwellings samples in multi-family of 4 units? (targeted/worse case)
- ANSall units if <5 units Minimum # of dwellings to sample in multi-family of 128 units? (targeted/worse case) - ANS Name three forms of lead abatement - ANSRemoval Enclosure Encapsulation
Paint Conditions for Interior Paint Quality: 3 of them - ANSIntact: entire surface intact Fair: <=2ft2 damaged Poor: >2ft2 damaged Protect Factor of a PAPR, lead concentrations of? - ANS up to 5,000 ug/m Protection Factor of a 1/2 face NPR, lead concentrations of? - ANS up to 500 ug/m Protection Factor of a full-face NPR, lead concentrations of? - ANS up to 2,500 ug/m Protection Factor of SCBA, lead concentrations of? - ANS1, up to 50,000 ug/m Random Sampling: # of units to sample in multi-family of 1,045 units? - ANS units Random Sampling: # of units to sample in multi-family of 25 units? - ANS Residential Lead-Based Hazard Reduction Act was enacted in what year? - ANSIn 1992 as Title X of the Housing and Community Development Act
Rooms to sample when composite wipe sampling at a minimum: 4 - ANS-main child play room -kitchen -bedroom of youngest child over 6 months -bedroom of next oldest child similar dwellings have common: - ANS-building history -painting history -maintenance and management history -similar construction spike samples contain this range of lead-containing dust - ANSbetween 50ug - 1000ug Surface area criteria where EPA regulations do not apply? - ANSDisturbed surfaces are less than: 20 sq. ft. for exterior surfaces 2 sq. ft. per room for interior surfaces 10% of surface area on any small component surface T/F: 8% of a window sill in the living room is deteriorated. This is classified as poor condition. - ANSFalse. (<10% is fair condition for components)
what are the first organs to be affected by lead ingestion? - ANSthe liver and kidneys What are the six LBP hazards defined by EPA? - ANSDust Friction Surface Impact Surface Chewable Surface Deteriorated Paint Soil What are the three forms of lead abatement? - ANSRemoval Enclosure Encapsulation What are the three types of criteria a risk assessor can select for assessment of a dwelling? - ANS1. Targeted
- Random
- Worst case What are the two categories of lead hazards in a risk assessment? - ANSMaterial hazard and surface hazard What conditions are necessary to have a chewable surface hazard? - ANSLBP and human teeth marks
What conditions are necessary to have a friction surface hazard? - ANSLBP, evidence of abrasion, and dust on nearby horizontal surfaces. What conditions are necessary to have a impact surface hazard? - ANSLBP, in contact with another building component, and evidence of damage. What does EBL mean? - ANSElevated Blood Level What does TSCA stand for and what is it relied upon to do? - ANSToxic Substance Control Act (TSCA) Relied upon to identify LBP hazards and identify management solutions What exterior soil areas need to be tested? - ANSWhere bare soil is present:
- Dripline of house
- Play areas and vegetable gardens
- Areas greater than 9 sq. ft. What Federal document serves as an overall guideline for performing inspections, risk assessments, and abatement activities? - ANSHUD Guidelines What is a Child Occupied Facility? - ANSANY building, or portion of building: Built before 1978; Visited by the same child who is less than 6 years old; On 2 separate days per week; For at least 3 hours per visit;
C. Father has a model airplane making hobby D. Mother is an airplane pilot - ANSB. Battery shop across the street What is the OSHA Action Level for lead? - ANS30 ug/m What is the purpose of blank samples? - ANSSubmitting blank samples is important to test the accuracy of your sampling techniques, the sampling media, and the laboratory's analysis. This can determine if you're sampling techniques are inadequate and contaminating samples. What is the purpose of lead inspections? - ANSTo identify the presence and locations of LBP What is the purpose of spike samples? - ANSSpiked samples help show to what extent the laboratory's analytical method is working, and help assess the accuracy of the method and/or the analyst. What paint deterioration will likely result in the most lead dust? - ANSChalking What six sampling methods do Risk Assessors use to identify lead hazards? - ANSVisual Dust Soil Paint Chip XRF Water
What tool is best to be used for soil sampling? A. A knife B. Tweezers/forceps C. A centrifuge tube D. Gloved hands - ANSC. A centrifuge tube (coring) What type of radiation does an XRF emit? A. microwave radiation B. ultraviolet radiation C. non-ionizing radiation D. ionizing x-ray radiation - ANSD. ionizing x-ray radiation What was the purpose of the Title X of the Housing and Community Development Act? - ANSTo regulate and educate home-buyers on the presence of lead paint in U.S. households built before 1978. What year was LBP banned for residential use properties? - ANS When diagraming a house for a Risk assessment, the "A" side is the? - ANSAddress side
You receive a laboratory analysis that says the soil composite sample you collected from soil reported 8,000ppm. What must you do? A. You are required to abate the soil B. Ask the homeowner what they want to do C. Call the EPA and let them know of the soil concentration immediately. D. Nothing, the soil is not a lead hazard - ANSA. You are required to abate the soil above 5,000ppm You receive a laboratory analysis that says the soil composite sample you collected from soil within a play area reported 1,000 ppm. There were 4 sub-samples within your composite sample. Does this exceed the EPA's clearance level? - ANSNo, the EPA clearance level for soil in a play area is 400ppm. The composite sample reported 1,000ppm and there were 4 subsamples. 1,000/4 = 250ppm per subsample which is below the EPA clearance level. You're client is multi-family housing owner and is going to be moving in new tenants. A child below the age of 6 is moving into one of the newer apartments in the building. The apartment is in good condition with no known issues and you're client is concerned about the price of inspection as there are many apartments to inspect. What service should you provide? A. Lead-based paint inspection B. Risk Assessment C. Lead Hazard Screen - ANSC. Lead Hazard Screen
You're XRF shot on a painted wall reports 3.6mg/cm2. Is Is this considered lead- based paint? - ANSYes, equal to or greater than 1.0mg/cm2 is lead-based paint
