Rehs exam stuvia 2023 Study guides, Class notes & Summaries

EBL - ANSWER-elevated blood level iron MCL in water - ANSWER-4ppm radon source - ANSWER-uranium pH of wastewater - ANSWER-6-9 (6.5-8.5avg) nematodes - ANSWER-ancylostoma/necator (hookworms), anisakiasis (roundworm), trichinella (roundworm) cestodes - ANSWER-taenia solium and saginata (tapeworms) trematodes - ANSWER-schistosoma 12 hour incubation - ANSWER-Clostridium perfrigens 2 hour incubation - ANSWER-S. aureus condemn - ANSWER-pronounce unfit for use, commonly by of...

A Cohert Study is characterized by: - ANSWER-Group of exposed individuals who can easily be identified Allows for comparison of risk by what was and was not eaten ex: wedding A Case-Control Study is characterized by: - ANSWER-Exposed group that is very large or not easily identified Compares ill with non-ill to determine the likelihood of having eaten a specific food ID's possible causes of disease by seeing how two groups differ w/r/to some exposure factor When do we generally determ...

Which of the following organisms are most resistant to unfavorable environmental conditions and indicate past of possibly intermittent pollution? a. fecal streptococci b. eschericha coli c. aerobacter aerogenes d. clostridium sporulates - ANSWER-clostridium sporulates The presence of which of the following is most easily identified by laboratory analysis in water contaminated by feces? a. shigella dysenteriae b. coliform c. entamoeba histolytica d. salmonella typhosa - ANSWER-coli...

Which of the following soil conditions is the most favorable for removal of viruses? - ANSWER-Fine loamy sand over course sand & gravel Which of the following organisms are most resistant to unfavorable env. conditions & indicates past or possibly intermittent pollution? - ANSWER-Clostridium sporulates Which of the following wells is considered the most dependable source of water & is less likely to become contaminated? - ANSWER-Drilled wells Which of the following is NOT considered a s...

What is an emetic? Describe a few examples observed in Environmental Health. - ANSWER-It is a chemical that induces vomiting. In E.H. emetics are used in Vector Control for rodent control, Red Squill What does USDA stamp on meat signify? - ANSWER-The meat products have been processed and inspected by the USDA (United State Department of Agriculture) and has passed food quality inspections Mobile Home parks are monitored by what Federal agency? - ANSWER-Housing and Urban Development (HUD) ...

When conducting a food inspection, you want to look for ___________________ first - ANSWER-foodborne illness factors first Define Good Retail Practice (GRP) - ANSWER-housekeeping stuff that is not a foodborne illness factor A thin probe thermometer is used to measure what type of temperature? - ANSWER-Internal food temperature When measuring the pH of sushi rice, what type of meter do we use? - ANSWER-probe type, bulk type (liquid solutions) A rating of Satisfactory means ___________...

What are the treatment processes in PRELIMINARY Wastewater Treatment? - ANSWER-Screening Comminution Grit Removal Pre-Aeration Flow Metering / Sampling What are the treatment processes in PRIMARY Wastewater Treatment? - ANSWER-Sedimentation / Flotation What are the treatment processes in SECONDARY Wastewater Treatment? - ANSWER-Biological Treatment (ie activated sludge, trickling filters, rotating biological contactor (RBC)) Sedimentation What are the treatment processes in TERTI...

The greenhouse effect is primarily caused by what pollutant? a) sulfur oxides b) carbon dioxide c) nitrogen oxides d) particulates - ANSWER-b) carbon dioxide Which of the following is not required at public pools? a) self-locking fence b) depth markers c) phone d) maximum occupancy sign - ANSWER-c) phone 90 degrees Fahrenheit is how many degrees Celsius? a) 90 b) 32 c) 42 d) 18 - ANSWER-b) 32 90F - 32 = 58 58 * 5 = 290 290 / 9 = 32.22 What is conjunctivitis caused...

Sound - ANSWER-Amplitude: loudness Frequency: pitch Time pattern Loses energy as it travels Noise - ANSWER-unwanted sound Noise pollution - ANSWER-noise that has characteristics and duration injurious to public health & welfare -unreasonably interferes with life and property Decibel - ANSWER-express intensity of sound Noise level - ANSWER-measurement in dBA by sound meter dB scales - ANSWER-dBA: loudness in normal situations dBC: loudness in noisy situations dBD: effect of...

% recirc from gutters/skimmers - ANSWER-60% Indirect or direct connection to water supply - ANSWER-indirect how does deck and pool water drain to sewer - ANSWER-air gap public pool chlorination - ANSWER-automatic chlorinator Bacterial disease - ANSWER-Staphylococcal streptococcal trachoma salmonella leptospira pseudomonas legionella shigella mycobacterium campylobacter E. coli viral disease - ANSWER-