Rehs exam stuvia 2023 Study guides, Class notes & Summaries
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REHS Exam: Review Questions &Answers 100% Correct(GRADED A+)
- Exam (elaborations) • 23 pages • 2023
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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...
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REHS Exam - Epidemiology (& some Communicable Disease) with Complete Solutions(RATED A+)
- Exam (elaborations) • 14 pages • 2023
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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...
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REHS Exam Questions &Answers 100% Correct(RATED A+)
- Exam (elaborations) • 59 pages • 2023
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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...
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REHS Exam Ch.1- Water- Questions & Answers (Graded A+)
- Exam (elaborations) • 13 pages • 2023
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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...
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REHS Exam 300 Questions & Answers 100% Correct(RATED A+)
- Exam (elaborations) • 11 pages • 2023
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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) 
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REHS Exam - Wastewater Treatment Questions & Answers 100% Correct(SCORED A+)
- Exam (elaborations) • 9 pages • 2023
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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...
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REHS Exam – Food Questions &Answers 100% Correct(SCORED A+)
- Exam (elaborations) • 9 pages • 2023
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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 ___________...
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REHS Practice Exam Questions & Answers 100% Correct(GRADED A+)
- Exam (elaborations) • 4 pages • 2023
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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...
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REHS Exam – Noise- Questions and Answers 100% Accurate(RATED A+)
- Exam (elaborations) • 2 pages • 2023
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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...
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REHS Exam – Pools Questions &Answers 100% Correct(SCORED A+)
- Exam (elaborations) • 3 pages • 2023
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% 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-
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