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Study Guides 
Lead Hazard Investigator and Risk Assessor

The Hazard Investigator Exam has 75-items covering the general topic areas (a through h) below.  The Risk Assessor Exam has 125-items covering the general topic areas (a through h) below as well as the lead (Pb) inspector topics found on the Lead (Pb) Inspector Study Guide. The specific knowledge areas listed under each topic are guides for your study activities in each topic. The course manuals from your initial lead (Pb) risk assessor and inspector courses, and materials from any refresher courses you have taken should provide most of the information needed to help you study for the exam.  In addition, the exam includes questions about applicable OSHA lead in construction regulations.  Exam times and locations vary.  

(a) The role and responsibilities of a lead risk assessor:

  • List the roles and responsibilities of a Risk Assessor
  • Explain the difference between an inspection and risk assessment
  • Describe when a risk assessment is not needed
  • Explain HUD and EPA notification and disclosure requirements
  • State purpose and goals of EPA Title X
  • Identify key elements of the 1995 HUD guidelines
  • State the importance of State and local regulations relevant to risk assessment
  • Explain adult health effects from lead exposure
  • Explain childhood health effects from lead exposure
  • Recognize basic building construction and architecture terminology
  • Describe types of liability issues as they relate to risk assessment
  • Define types of insurance relevant to risk assessment
  • Define general contract terms and requirements
  • Describe field staff requirements for a risk assessment
  • Select Risk Assessorís personal protective equipment
  • List key elements of the OSHA Lead in Construction Standard
  • Discuss basic terms and concepts relevant to lead risk assessments
  • Discuss background information about lead
  • List characteristics of concern for children living in or using building containing lead
  • Explain RCRA regulations as they relate to hazardous waste disposal
  • Discuss Wisconsin HSS 163 certification requirements
  • Describe Wisconsin HFS 163 definition of abatement
  • Describe Wisconsin HFS 163 definition of lead-based paint or LBP
  • Explain Wisconsin HFS 163 lead abatement or other lead hazard reduction activities notification requirements
  • Indicate which Wisconsin regulation covers lead (Pb) training and certification
  • Describe Wisconsin HFS 163 definition of interim control activity
  • Identify the State agency that regulates solid waste storage, transportation and disposal
  • Identify which certified personnel Wisconsin HFS 163 authorizes to perform clearance
  • Identify the certified personnel Wisconsin HFS 163 requires to be at the lead (Pb) abatement site at all times
  • Explain who owns the certification card
  • Identify the certified personnel who may conduct lead inspections, write inspection reports and conduct clearance following a lead hazard reduction activity
  • Identify the certified personnel who may conduct lead inspections, write inspection reports, conduct clearance, conduct lead hazard screens and provide options to reduce specific lead hazard
  • Identify the certified personnel who may oversee or perform on-site lead abatement and HUD LBP grant-funded lead hazard reduction activities, develop occupant protection plans and write abatement reports

(b) Collection of background information to perform a risk assessment:

  • Identify the key items to review with an owner before performing a lead evaluation
  • List elements of the EBL questionnaire
  • Identify characteristics of an EBL child
  • Outline current information needed about property: building age, size, use, occupants, ownership, blueprints
  • Outline historical information needed about property: painting, additions, renovations, remodeling, prior sampling or inspection reports, prior controls or abatement
  • List factors in scheduling a risk assessment
  • List residentís hobbies which might contribute to lead contamination
  • List residentís occupations which might contribute to lead contamination
  • Explain how absorption and diet influence childrenís blood-lead levels
  • Discuss routes of exposure which influence childrenís blood-lead levels

(c) Sources of environmental lead contamination:

  • Explain places where lead can be found
  • Identify interior areas which need to be examined
  • Identify exterior areas which need to be examined
  • Describe conditions under which lead paint is considered a hazard
  • List possible sources of lead outside the building
  • Assess paint condition
  • List sources of lead in drinking water

(d) Lead hazard screen protocol:

  • Define a lead hazard screen
  • Determine the number of paint samples to collect from poor condition paint for a lead hazard screen
  • Describe the collection of composite dust samples for a lead hazard screen
  • Explain why composite dust sample standards for a screen are more stringent than single surface samples
  • State the next steps an owner may take after obtaining results of the screen

(e) Sampling for other sources of lead exposure:

  • Select dust sampling location(s) for risk assessment
  • State units of measure of lead in a dust sample
  • Describe composite dust sampling
  • Describe single surface dust sampling
  • List equipment needed to collect a surface sample by DVM
  • List equipment needed to perform dust wipe sampling
  • Calculate dust concentration in ug/ft2
  • Define a spiked dust sample
  • State how many field blank dust samples to collect
  • Select soil sampling locations for risk assessment
  • List equipment needed to collect a soil sample
  • State units of measure of lead in a soil sample
  • Describe soil sampling
  • Describe composite soil sampling
  • Describe the collection of water samples
  • Select paint sample locations
  • Describe paint chip sampling from deteriorated surfaces
  • Describe paint chip sampling from intact surfaces
  • Calculate lead in PPM and mg/cm2 for paint chip results
  • Describe how to take XRF readings of painted surfaces
  • Use performance characteristics sheet (PCS)
  • Discuss safety issues concerning XRF analyzer use
  • Select units for risk assessment
  • Define worst-case sampling of multi-family dwellings
  • Define targeted sampling of multi-family dwellings
  • Define random sampling of multi-family dwellings

(f) Interpretation of lead-based paint and other lead sampling results:

  • Define HUD categories of paint condition
  • Define HUD categories of paint deterioration
  • State EPA and HUD guidance levels for lead in dust
  • State EPA guidance levels for lead in soil
  • State EPA lead in drinking water standards
  • List laboratory accreditation programs for lead analyses
  • Describe different laboratory methods for analyzing lead
  • Interpret results of single-surface paint chip sampling of multi-family dwellings
  • Interpret results of composite paint chip sampling of multi-family dwellings

(g) Development of hazard control options:

  • List factors affecting cost of a lead evaluation
  • Compare results of risk assessment to planned use(s) of building
  • List interim hazard control actions
  • List lead abatement methods
  • Describe methods of paint removal
  • Describe conditions under which encapsulation is effective
  • List hazard control activities prohibited and not recommended by HUD
  • Identify appropriate hazard controls for different scenarios
  • Determine approximate costs of hazard control options
  • List soil control and abatement methods
  • Determine relative costs of soil control options
  • List elements of a Hazard Control Plan
  • List elements involved in ongoing lead hazard monitoring
  • Differentiate between a re-evaluation and risk assessment
  • Justify schedules for reevaluation

(h) Preparation of a final risk assessment report:

  • Describe various data collection forms required for a risk assessment
  • Explain recording of damaged or deteriorated painted surfaces square footage
  • Prepare an inventory of painted surfaces
  • List elements of proper field documentation
  • List elements of a management plan for multi-family dwellings
  • List all parts of the HUD standard risk assessment report
  • Describe summary tables of all sampling

NOTE: The Hazard Investigator and Risk Assessor Exam also covers information on the Lead Inspector Study Guide.

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Last Revised: July 24, 2013