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