Lead Risk Assessment and Abatement Study Guide for EPA Lead Risk Assessor Exam 2023-2024, Exams of Community Health

Download Lead Risk Assessment and Abatement Study Guide for EPA Lead Risk Assessor Exam 2023-2024 and more Exams Community Health in PDF only on Docsity! EPA Lead Risk Assessor Exam Study Guide-with 100% verified solutions-2023-2024 HUD Guidelines What Federal document serves as an overall guideline for performing inspections, risk assessments, and abatement activities? chelation therapy A child may be treated for lead poisoning by using... Identify LBP hazards The purpose of a lead risk assessment is to? Elevated Blood Level What does EBL mean? Ingestion of lead dust How does lead primarily enter children's bodies? No, the elevated blood levels of 17ug/dL and 16ug/dL were not consecutive 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 Which is more useful for the renovation contractor, the lead inspection or the risk assessment? Visual Dust Soil Paint Chip XRF Water What six sampling methods do Risk Assessors use to identify lead hazards? Notify the client in writing 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 What is the OSHA Action Level for lead? Optional Water sampling as part of a Risk Assessment is: Mandatory, Optional, or Never included? Dust Friction Surface Impact Surface Chewable Surface Deteriorated Paint Soil What are the six LBP hazards defined by EPA? 1,200 ppm EPA Soil lead hazard in general yard area True XRF analysis is the most common method for determining LBP greater than 15 ppb or 15ug/l or 0.015mg/l EPA action level criteria for lead in drinking water 5 ug/dL 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) Lead poisoned criteria 50 ug/dL OSHA medical removal level for lead in adult worker blood -same as PEL 40 ug/dL 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 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 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 Surface area criteria where EPA regulations do not apply? 10 up to 500 ug/m3 Protection Factor of a 1/2 face NPR, lead concentrations of? 50 up to 2,500 ug/m3 Protection Factor of a full-face NPR, lead concentrations of? 100 up to 5,000 ug/m3 Protect Factor of a PAPR, lead concentrations of? Written program Respirator training Fit test Annual physical Fit check OSHA respirator requirements 1,000 up to 50,000 ug/m3 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 Lead-Safe Work Practices Removal Enclosure Encapsulation Name three forms of lead abatement 20 years How long must lead abatement last? Recommended: 1 ft^2 / Minimum = 0.1ft2 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 Describe the dust wipe sampling method in steps: 4 Intact: entire surface intact Fair: <=2ft2 damaged Poor: >2ft2 damaged Paint Conditions for Interior Paint Quality: 3 of them 1: Loading 2. mass concentration 2 ways to describe the amount of lead in dust: wipe sampling or vacuum sampling lead in dust: loading is measured by? usually measured by vacuum sampling only lead in dust: mass concentration is measured by... Toxic Substance Control Act (TSCA) Relied upon to identify LBP hazards and identify management solutions 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 Acceptable Dust Wipe criteria: 3 - different dwellings - different components - different locations - from carpet and hard surfaces composite samples should be collected separately for: when lead dust levels are needed in a specific location 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 advantages and disadvantages of composite wipe sampling: 2 each at least 6-8 per dwelling how many single wipe samples should be collected per dwelling? floors = <10ug/ft2 sills = <100ug/ft2 troughs = <100ug/ft2 HUD clearance levels for floor, sills, troughs: -main child play room -kitchen -bedroom of youngest child over 6 months -bedroom of next oldest child Rooms to sample when composite wipe sampling at a minimum: 4 3-10 subsamples per composite collected roughly along a straight line Number of sub-samples per soil composite sample? at least 2 samples how many composite soil samples are needed? A2LA - American Association for Laboratory Accreditation AIHA - American Industrial Hygiene Association Labs used by risk assessors must be certified by one of these two agencies: If there are fewer than 5 dwellings and they do not have similar histories, you should assess... after sampling the final dwelling of the day but before decontamination at what time in the inspection do you collect blank samples? between 50ug - 1000ug spike samples contain this range of lead-containing dust Intact - Entire surface is undamaged Fair - <= 10ft2 damaged Poor - >10ft2 damaged Paint Conditions for Exterior Paint Quality: 3 of them In 1992 as Title X of the Housing and Community Development Act Residential Lead-Based Hazard Reduction Act was enacted in what year? To regulate and educate home-buyers on the presence of lead paint in U.S. households built before 1978. What was the purpose of the Title X of the Housing and Community Development Act? At or above 45ug/dL At what lead blood level does a child require chelation therapy? no can lead be absorbed through the skin? in bones where does excess lead get stored in the body?