EPA Lead Risk Assessor Exam Study Guide latest updated (Graded A)

HUD Guidelines - Answer- What Federal document serves as an overall guideline for performing inspections, risk assessments, and abatement activities? chelation therapy - Answer- A child may be treated for lead poisoning by using... Identify LBP hazards - Answer- The purpose of a lead risk assessment is to? Elevated Blood Level - Answer- What does EBL mean? Ingestion of lead dust - Answer- How does lead primarily enter children's bodies? No, the elevated blood levels of 17ug/dL and 16ug/dL were not consecutive - Answer- Would a child with consecutive blood lead tests of 17 ug/dl, 9 ug/dl, and 16 ug/dl be considered to be lead poisoned? Lead Inspection - Answer- Which is more useful for the renovation contractor, the lead inspection or the risk assessment? Visual Dust Soil Paint Chip XRF Water - Answer- What six sampling methods do Risk Assessors use to identify lead hazards? Notify the client in writing - Answer- 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... 30 ug/m3 - Answer- What is the OSHA Action Level for lead? Optional - Answer- Water sampling as part of a Risk Assessment is: Mandatory, Optional, or Never included? Dust Friction Surface Impact Surface Chewable Surface Deteriorated Paint Soil - Answer- What are the six LBP hazards defined by EPA? 1,200 ppm - Answer- EPA Soil lead hazard in general yard area True - Answer- XRF analysis is the most common method for determining LBP False, XRF is most commonly used to determine LBP but not hazards - Answer- XRF analysis is the most common method for determining lead hazards Performance Characteristic Sheet (PCS) supplied with the XRF - Answer- Where would you find operational data for an XRF? 13 - Answer- How many dust samples are usually taken for a Risk Assessment? Removal Enclosure Encapsulation - Answer- What are the three forms of lead abatement? 3 shots on the 1.02 standard - Answer- How do you calibrate an XRF? Beginning End Every 4 hours Every time the device is powered down - Answer- How often do you calibrate an XRF? Equal to or greater than 1.0 mg/cm2 - Answer- LBP per XRF Greater than 0.5% by weight - Answer- LBP % level by paint chip analysis 40 ug/ft2 - Answer- EPA Floor clearance/hazard level 250 ug/ft2 - Answer- EPA Window sill or stool clearance/hazard level 400 ug/ft2 - Answer- EPA Window trough or well clearance/hazard level 50 ug/m3 - Answer- OSHA lead PEL 30 ug/m3 - Answer- OSHA lead Action Level 400 ppm - Answer- EPA Soil play area/vegetable garden clearance/hazard level 1,200 ppm - Answer- EPA Soil other parts of yard clearance/hazard level 5,000 ppm - Answer- HUD required Level for soil abatement greater than 15 ppb or 15ug/l or 0.015mg/l - Answer- EPA action level criteria for lead in drinking water 5 ug/dL - Answer- Lead blood Level requiring investigation in children A 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) - Answer- Lead poisoned criteria 50 ug/dL - Answer- OSHA medical removal level for lead in adult worker blood -same as PEL 40 ug/dL - Answer- OSHA back to work level for lead in adult worker blood Any houses built before 1978 except: Housing designated for elderly Designated housing for adult disabled Zero bedroom units (except a child under age 6) Vacant houses awaiting demolition - Answer- What is considered Target Housing? ANY 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; For a total of 60 hours total per year - Answer- What is a Child Occupied Facility? Disturbed 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 - Answer- Surface area criteria where EPA regulations do not apply? 10 up to 500 ug/m3 - Answer- Protection Factor of a 1/2 face NPR, lead concentrations of? 50 up to 2,500 ug/m3 - Answer- Protection Factor of a full-face NPR, lead concentrations of? 100 up to 5,000 ug/m3 - Answer- Protect Factor of a PAPR, lead concentrations of? Written program Respirator training Fit test Annual physical Fit check - Answer- OSHA respirator requirements 1,000 up to 50,000 ug/m3 - Answer- Protection Factor of SCBA, lead concentrations of? 1. Minimize or eliminate generation of dust/debris 2. Contain dust/debris in regulated work area 3. Collect debris on disposable sheeting 4. Clean using wet methods and a HEPA vacuum - Answer- Lead-Safe Work Practices Removal Enclosure Encapsulation - Answer- Name three forms of lead abatement 20 years - Answer- How long must lead abatement last? Address side - Answer- When diagraming a house for a Risk assessment, the "A" side is the? Lead inspectors and risk assessors - Answer- Who can conduct lead inspections in target housing and child occupied facilities? To identify the presence and locations of LBP - Answer- What is the purpose of lead inspections? 1978 - Answer- What year was LBP banned for residential use properties? Flu symptoms - Answer- The symptoms of lead poisoning are most often misdiagnosed as? Material hazard and surface hazard - Answer- What are the two categories of lead hazards in a risk assessment? LBP and human teeth marks - Answer- What conditions are necessary to have a chewable surface hazard? LBP, evidence of abrasion, and dust on nearby horizontal surfaces. - Answer- What conditions are necessary to have a friction surface hazard? LBP, in contact with another building component, and evidence of damage. - Answer- What conditions are necessary to have a impact surface hazard? 1. Targeted 2. Random 3. Worst case - Answer- What are the three types of criteria a risk assessor can select for assessment of a dwelling? Where bare soil is present: 1. Dripline of house 2. Play areas and vegetable gardens 3. Areas greater than 9 sq. ft. - Answer- What exterior soil areas need to be tested? 50 ug/wipe - Answer- Blank wipe samples should be recollected if they exceed...? 1 for each dwelling unit or 1 blank / 50 samples. Whichever is least - Answer- How many dust wipe blanks are needed? 4 per composite sample - Answer- how many wipes per composite sample are allowed? Recommended: 1 ft^2 / Minimum = 0.1ft2 - Answer- what is the minimum wipe area for floors? 1. 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 - Answer- Describe the dust wipe sampling method in steps: 4 Intact: entire surface intact Fair: <=2ft2 damaged Poor: >2ft2 damaged - Answer- Paint Conditions for Interior Paint Quality: 3 of them 1: Loading 2. mass concentration - Answer- 2 ways to describe the amount of lead in dust: wipe sampling or vacuum sampling - Answer- lead in dust: loading is measured by? usually measured by vacuum sampling only - Answer- lead in dust: mass concentration is measured by... Toxic Substance Control Act (TSCA) Relied upon to identify LBP hazards and identify management solutions - Answer- What does TSCA stand for and what is it relied upon to do? - does not contain aloe - yields between 80% - 120% recovery rates - blank wipes are less than 5 ug/wipe - Answer- Acceptable Dust Wipe criteria: 3 - different dwellings - different components - different locations - from carpet and hard surfaces - Answer- composite samples should be collected separately for: when lead dust levels are needed in a specific location - Answer- When to use single wipe sampling? Advantages: -lower cost per sample -increased surface area per wipe Disadvantages: -lead dust in a specific location info is lost -labs must adopt special prep procedures - Answer- advantages and disadvantages of composite wipe sampling: 2 each at least 6-8 per dwelling - Answer- how many single wipe samples should be collected per dwelling? floors = <10ug/ft2 sills = <100ug/ft2 troughs = <100ug/ft2 - Answer- HUD clearance levels for floor, sills, troughs: -main child play room -kitchen -bedroom of youngest child over 6 months -bedroom of next oldest child - Answer- Rooms to sample when composite wipe sampling at a minimum: 4 3-10 subsamples per composite collected roughly along a straight line - Answer- Number of sub-samples per soil composite sample? at least 2 samples - Answer- how many composite soil samples are needed? A2LA - American Association for Laboratory Accreditation AIHA - American Industrial Hygiene Association - Answer- Labs used by risk assessors must be certified by one of these two agencies: At least 6 hours, best time to sample is first thing in the morning - Answer- How long should water sit motionless before being sampled? False. (>2 ft2 is poor condition) - Answer- T/F: Interior wall has >3 ft2 of deteriorated paint. This is classified as fair condition. False. (<10% is fair condition for components) - Answer- T/F: 8% of a window sill in the living room is deteriorated. This is classified as poor condition. False, only bare soil is required to be sampled - Answer- T/F: Soil covered in dense grass and vegetation can be a lead based hazard? False, dust is the strongest predictor for child blood lead level - Answ