REHS Flashcards
amount of water provided to RV’s
100 gal/day/camper
distance between water and sewer lines to RV’s
10 ft
distance at end of waste pipe above sink rim
2x pipe diameter
pea trap in sinks prevents
odor
water treatment plant should have
- well equipped lab
- certified operator
- chemist
drinking water samples are called
grab samples
type of bottle for bacterial exams
glass or plastic
organics exam uses
1 gal glass with teflon lining and lid
gas formations indicate
coliforms
slow acting filters include
- cartridge
- slow sand
- earth
nitrate causes
methenoglobinemia also known as blue baby syndrome
waste water can be used to
water lawns after treatment
how to prevent well contamination from water runoff
cement annular space along casing
disaster shelter requirements
- 30 sq ft area per person
2. 3-6 gallons of water per person per day
FEMA
federal emergency management agency - responds to national disasters
slow sand filters are used in
small rural communities
stream pollution
- zone of degradation
- decomposition
- recovery
indicator of pollution in water
dissolved oxygen
yellow, red soil
good for drain field, water passes through
septic tank retention time
24-72 hours
good soil is
unsaturated
emergency facilities
excrete in buckets with plastic liner
ergonomic diseases
- repetitive motion
- forceful action
- static posture
prevailing wind
direction from which wind blows
prisoner requirements
- shower 2x/day
- change clothes 2x/day
- meals at least 2x/day
- guaranteed adequate recreation and work
prisons are a
complete community
humidifier in new born area
causes mold and mildew
flies spread
disease - require 6 inches compact dirt
how to prevent salmonella in shell eggs
cook to 145F for 15 seconds
store at or below 45F
Cook until done
Lyme Disease
Borrelia Burgdorfer - transmitted to humans by bites from black legged tick
water sample bottles are treated with
sodium thiosulfate - deactivates chlorine
major cause of death for infants to age 55
accidents
hazardous materials drained from crankcase
heavy metals and oil
EPA safe radon levels
4 pCi/L for 24 hours
Radon is an
alpha particle emitter
gas form
alpha counter
radon detector
preventing radon in home
caulk cracks
products of radon
polonium
lead
bismuth
schistosomiasis
larvae, parasitic worm(cercarea)
found in fresh water snails
vaccum cleaner in hospitals
causes particulates
energy efficient homes causes
higher rate of respiratory infections
Hazardous Waste
known as chemical, biological, flammable, explosive, radioactive
hazardous waste characteristics
toxicity, reactivity, corrosivity, ignightablility
hazardous waste landfills requires
double liners
groundwater monitoring
well monitoring
surveillance
TSCA
toxic substance control act
regulates production, use, and disposal of toxic substances
OSHA requires toxic waste operators to
have 40 hours of training and protective equipment
Process modification
zero tolerance for hazardous waste
Dioxin remains in the body for
10 years
Hazardous materials are best stored in
corrosion resistant containers
What determines the depth of a sanitary landfill
- location of bedrock
- seasonal high ground water
- finished grade
- 3-5 ft above ground water
ringleman chart shows
shades of smoke - dtermines wheater smoke emissions are within standards
is bing replace by % opacity
noise level
weighted scale
Radiation protection
- time
- distance
- shielding
Dept of Energy
In charge of radioactive waste management storage
Fresh Fish characteristics
- red gills
- no odor
- eyes
old fish characteristics
- grey gills
- odor
- sunken eyes
Cheese preservation process
fermentation
rinse water temp at manifold
180F
chemical sanitizer that turns silver black and has distinct odor
chlorine
Silverware
nickel plated with silver stainless steel
swimming disease that is not spread from person to person
legionella(potiac fever)
found in hot springs, showers, tap water
Legionnaires disease
caused by bacteria naturally found in water
person infected by breathing in mist or steam
causes pneumonia
pH of pool
7.2-7.6
what is used to check pH of water
phenol red
classroom space requirements
25-30 sq ft per pupil
hanta virus
inhaled from deer mouse droppings
embargo
prohibit use or removal
search warrant
a writ authorizing an office to search, arrest, and seize
ozone is formed by
action of sunlight on nitrogen+oxygen+hydrocarbons
acid rain is when
nitrogen, sulfur dioxide, carbon dioxide and other pollutants react with sunlight and vapors
Cook Pork
145F for 15 seconds
Negative phosphate test
shows that milk is pasteurized
epidemic
occurence of illness in excess
indicators of pathogens in water
total coliforms, fecal e. coli
wellhead
surface and subsurface surrounding the well
turbidity is caused by
clay, silt, organic and inorganic matter
final landfill cover
2 feet
what comprises most of garbage
paper
maximum days to store hazardous waste without a permit
90 days
protection factor
indicating level of protection for respirator
LD factor
oral dose that is lethal for half of population
Disaster response measure
prior planning
Virus
grows in living cells
Aspergillus
is a mycotoxin
caused by molds in high humidity
Giardia
spread by person to person
contaminated water
Hemolytic Ureic Syndrom
caused by e. coli 0157h7
incubation
time between exposure and first symptom
dengue fever
caused by aedes aegypti mosquitoes
psittacosis
caused by birds
kerosene added to pond to control mosquitoes
2-20 gallons per acre
ice machine drain line
needs an open receptacle with air gap
most cockroaches in US
are german cockroach
Psychrometer measures
temperature and humidity
chimney
are built 2ft above pitch of roof to prevent downdraft
pool turnover rate
TR= (pool vol/flow rate)/60
malfeasance
inspector does unauthorized act in an unlawful manner
misfeasance
inspector does authorized act in an unlawful manner
nonfeasance
inspector does not act and is required to do so
Roentgen
unit of measurement for exposure to ionization(gamma, x-ray)
1 Roetgen=86ergs
Clean air Act
Carbon monoxide, lead, nitrogen oxide, ozone, sulfur dioxide, particulates
Bacteria grow in pH range greater than
4.6
Asbestos
fine silicates in the lungs
causes mesothelioma
Hearing loss caused by
intensity, frequency, duration
how to lower ground water in landfills
curtain drains
Landfill clasess
class I - Municipal, Household, Tires
Class II - Industrial
Class III - farm landscaping
Class IV - construction
max hand wash temperature for jail
120F
Mesothelioma
caused by asbestos
malignant cells in pleura of lung
20-50 years after asbestos
laundry temperature in hospitals
160-167F for 25 minutes
Blanch Vegetables to
enhance color
destroy enzymes
prep for freezing
parasite destruction in fish
freeze
- 4F for 7 days
- 31F for 15 Hours
Myaisis
infection with diptera fly larvae
giardia inactivated by
1ppm chlorine in 45 minutes
pH increases
hypochlorus acid concentration decreases
Blue and Grey Soil
Extended periods of saturation
Chicks law
exposure time decreases with increasing sanitizer strength
Biosafty levels
level 1 - agents won’t cuase disease
level 2 - moderate hazard
level 3 - lethal agents
level 4 - dangerous exotics
Halon 1301
fixed flood fire extinquishers
halon 1211
portable extinguishers
1984 RCRA Amended what
2 liners
leachate collection
Anopheles
Mosquito that causes malaria
Aedes
Mosquito that causes Dengue and yellow fever
Dermacentor
Dog Tick causes Rocky mountain Spotted fever
Ixodes
Deer Tick causes lyme disease
Organisms that causes nosocomial disease
- staph aureus
- pseudomonas aeruinosa
- turberculosis
- E. coli
spa turnover rate
30 min
Bacteria found in roaches
salmonella
Incident commander
highest ranking officer at emergency scene
Rats Sexually mature at
2-3 months
rat bread in
spring and fall
rat litter amount
4-7 a year
3 emergency action level
- alert
- site emergency
- general emergency(worst)
4 divisions of ICS
- operations
- planning
- logistics
- finance
Housing sleeping quarters space requirement
70ft sq per person
50 ft sq per additional person
how to disinfect wells
1 quart bleach in 5 gallon water
building structural test
support 2 1/2- 4 times the usual load
RCRA 1976
cradle to grave protectes groundwater: 1. generation 2. treatment 3. landfill 4. transport 5. underground tanks 6. disposal of hazardous waste
Indoor Humidity Effects
> 60% = condensation and mildew
> 70% = fungal spores germinate
Disinfection
application of microbiacidal to materials which come into contact with or ingested by humans. may not kill pathogens
Sterilization
process of killing all microorganisms including spores
Sanitize
to reduce microorganisms to an acceptable level
Underground storage tanks are constructed of
double wall fiberglass reinforced plactic steel with heavy epoxy cathodically protected steel tanks at least 20 years use
above ground storage tanks are
steel
Sick Building Syndrome
condition affecting office workers - causes headaches and respiratory problems
caused by poor ventilation or VOC(volitale organic compound)
Size of particulates that carry deep into the lungs
3 um
3 Levels of Wast treatment
Primary - Settling, flocculants
Secondary -sand filter, activated sludge
Tertiary - chemical, coagulant
number of seconds FDA require to wash hands
20 seconds
Max Spa Temperature
102F for 15 minutes
Bacteria that most commonly cause diarrhea
Campylobactor jejuni
Filter size effective for removing giardia
1 um of less
how many pounds of waste per mount is exempt from RCRA
220 lbs
Type of filters effective against giardia
sand filters. but not for cysts
what is toxic hazardous waste
substances that are
- toxic
- reactive
- ingnitable
- corrosive
1 curie is equal to
3.7x10^10 disintegration/sec
alpha particles
- stem from the nucleus
- is not penetrative
- stop by paper and skin
- hazardous when ingested
used in smoke detectors
Beta particles
- electron, charged negatively
- penetrative, thin aluminum or plates
- hazardous when ingested as well
used to treat eye and bone cancer
gamma rays radiation
- not particles
- energy emitted from nucleus - short wavelength, high energy
- stopped by lead
used to kill cancer cells and sterilization
x-ray radiation
- energy from electron
2. long wavelength, low energy
neutron radiation
- neutron particle
- unstable - can turn other material radioactive
- stopped by water
sealed isotope used in medicine
Gold^198
amendment used to protect from unwarranted search and seizure
4th amendment - bill of rights
Endemic
occurrence of disease in a particular area
epidemic
wide spread occurrence of disease in a community. exceeding expectation
outbreak
sudden rise of disease
effects of antibiotics on E. coli o157h7
kills cells causing a flood of toxin
BOD
dissolved oxygen required during decomposing orgainc matter by aerobic bacteria
percentage of BOD decrease before released to environment
85%
Point Source Pollution
where pollution may be discharged
from pipe ditch, feedlot, well, vehicle
Trench Fever
Crushed lice in woound
endemic typhus
agent - rickettsia typhi
reservoir - rodents
bite or feces of flea xenopsylla cheopis
Xenopsylla Cheopis
rat flea causes endemic typhus and bubonic plague
Epidemic typhus
agent - rickettsia prowazeki
resorvoir - infected lice or person
crushing infected body lice
Bubonic plague
agent - yersinia pestis
reservoir - wild rodents
bite of flea x. cheopis.
Rocky mountain spotted fever
agent rickettsia rickettsii
reservoir - infected ticks, dog tick, wood tick, lone star tick
bite of tick
colorado tick
agent virus
reservoir - ticks and small animals
bite of infected tick, dermacentor andersoni
dermacentor andersoni
tick that spreads colorado tick fever
Tuleremia
agent Franscicella tularensis
reservoir - rabbits, muskrats, wood ticks
bit of flies or ticks, handling of infected animals
scabies
agent - mite
reservoir - humans, dogs, horses, swine
contact with person harboring mite
trypanosomiasis(sleeping sickness)
agent - trypanosoma gambiense
reservoir - humans, cattle, wild game
bite of infected tsetse fly
tsetse fly
bite causes sleeping sickness
Lyme disease
agent - borrela burgdorferi
reservoir - white footed field mice
bite of deer tick
dengue fever(break bone fever)
agent - virus
aedes aegypti mosquito
encephalitis
agent - virus
aedes, culex mosquito
Filariasis
agent - nematode worm
culex fatigans mosquito
Malaria
agent - plasmodium vivax, P. falciparum
anopheles mosquito
RCRA
Resource Conservation Recovery Act 1976
gives EPA authority to control hazardous waste from cradle to grave.
- generation
- transportation
- treatment
- storage
- disposal
EPA Superfund Enforcement
Responsible party does clean up of hazardous waste
Silicosis
lung disease caused by breathing in tiny bits of silica
mining, glass manufacturing, foundry work
BISCC
baking industry sanitation standards committee
Food labeling requirements by the nutritional labeling and education act
calories from fat saturated fat cholesterol sugars dietary fibers
purpose of DOT emergency response guide
the safe transportation of hazardous materials
absolute humidity
measure of actual water in the air
chemtrec
chemical assistance
bed bugs treatment
lindane
malthion - not on mattresses
pyrethium - cracks
Hanta Virus
Sin Nobre virus
rodents, deer mice
causes pulmonary disease
American disability act approved ramp inline maximum of
1:12
Cross Connection
actual or potential connection between a potable and non potable water supply
federal agency that regulated shelled mollusks
usda
Typhus Fever
caused by Rickettsia
food borne illness that causes spore former
clostridium and bascillus species
Clostridium Botulinum vegetative cells killed at
176F in 15 min
MCL
national interim primary drinking water regulations
noise limits in jail
70dba day
45 dba night
recommended humidity of indoor air
Clostridium Botulinum spores cannot germinate at pH of