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CPHA Environmental Health & Occupational Safety Flashcards

6 cards from real CPHA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 CPHA Environmental Health & Occupational Safety flashcards as text

  1. Which federal law regulates the discharge of pollutants into US waters and established the National Pollutant Discharge Elimination System (NPDES)?

    Answer: Clean Water Act

    The Clean Water Act established the NPDES permit program to regulate pollutant discharges into US navigable waters.

  2. Workers repeatedly exposed to loud noise above 85 decibels (A-weighted) over an 8-hour shift are required by OSHA to be included in which program?

    Answer: Hearing Conservation Program

    OSHA's 1910.95 standard mandates a Hearing Conservation Program for workers exposed to time-weighted average noise levels of 85 dB(A) or more over an 8-hour shift.

  3. A community health assessment identifies high blood lead levels in children living near a smelter. Which agency would conduct a public health assessment of the site?

    Answer: ATSDR

    The Agency for Toxic Substances and Disease Registry (ATSDR) is mandated under CERCLA to conduct public health assessments at hazardous waste sites and areas of environmental contamination.

  4. Which type of epidemiological study is most appropriate for investigating occupational disease clusters where workers have been exposed to the same chemical over many years?

    Answer: Retrospective cohort study

    A retrospective cohort study is well-suited for occupational disease research because it can assess disease incidence among workers with defined past exposures over long follow-up periods.

  5. The EPA's Integrated Risk Information System (IRIS) primarily provides what type of information?

    Answer: Human health effects of environmental chemical exposures

    EPA's IRIS database provides peer-reviewed toxicological summaries and human health risk assessment data for environmental chemicals.

  6. Which term describes the amount of a chemical that must enter the body to produce a harmful effect in 50% of a test population?

    Answer: Lethal Dose 50 (LD50)

    LD50 (Lethal Dose 50) is the dose required to kill 50% of a test population and is a standard measure of acute toxicity.