2021 WI Lead Risk Assessor Exam questions and answers 100% verified.

2021 WI Lead Risk Assessor Exam questions and answers 100% verified. EPA and WI DHS Lead Based Paint Definition - correct answers.≥0.5% ≥1.0 mg/cm2 Nationally houses built before 1978_______ have lead based pain - correct answers.75% XRF - correct answers.X-ray fluorescence Factors that should be considered for XRF: - correct answers.- Substrate Correction - inconclusive range - measuring K & L shell reading What year was lead based paint banned? - correct answers.1978 Only _______ areas that are in the scope of work from the contractor - correct ng areas Sampling requirements for Inside a home - correct answers.Visual inspection Less than 4 rooms = sampling all rooms More than 4 rooms = minimum of four rooms sampled Each room should have sampled: Floor Alternate between the tough and window sill _______% confident for room amount with big complexes, with lots of rooms - correct answers.95% Wait how long after any cleanup has been done - correct hour Sampling requirements for outside a home - correct answers.-Have to do a visual inspection. -Doesn't specify dust wipe sampling outside -No requirements to have porch floor dust wiped - HUD requires it for particular projects so it is expected to be done -Soil Samples Sampling requirements for soil samples (and max levels) - correct answers.3-10 composite samples in drip line 400 ppm is the threshold for children areas 1200 ppm for all other areas HUD paint chip recommended size - correct answers.Recommended HUD paint chip size is 2" X 2" What type of investigations can Lead risk assessor do - correct answers.- clearances - full inspection - lead partial inspection - lead-free inspections - EBL - Hazard Screening - Lead-safe Investigations How often should a leak/wipe test be done, and why? - correct 6 months - this checks to see if there are leaks in the radioactive source shield How often should you calibrate the XRF machine? - correct answers.At the beginning, every fours, and at the end NIST - correct answers.(National Institute of Standards and Technology) Set the SRM Performance Characteristic Sheet (PCS) - correct answers.Provides important information on how to use the specific XRF SRM - correct answers.(Standard Reference Material) closest to 1.0 mg/cm2 and used to calibrate the machine Should have calibration range (first and second reading) between 0.8 - 1.2 mg/cm2 (+/- 0.2 mg/cm2) for Heuresis model. Each model is different. If out of range then should not use the samples taken. substrate bias/correction - correct 's below the paint Newer machines do not need to substrate correction Take apparent lead concentration (APL) - substrate equivalent lead (SEL) = corrected lead concentration APL - SEL = corrected lead concentration