REHS study questions and answers, latest updated

REHS study questions and answers, latest updated How far to bury animals from the house 100 ft What chemical is used to raise total alkalinity Sodium bicarbonate Define a weight scale Light, radiation, noise What chemical is used to raise total alkalinity (and/or pH)? Sodium bicarbonate Hemolytic Uretic syndrome caused by? E. Coli 0157: H7 What is Psittacosis Comes from bird droppings, pneumonia like Zone of Decomposition The dissolved oxygen in the water is further reduced and may approach zero. Water become turbid and gives off foul odors. Fish disappear; anaerobes predominate in the bottom mud. Also sludge worms become very numerous Zone of Degradation The oxygen in the water is decreased, suspended solids may be increased, and the stream bottom accumulates sludge. Fish become very coarse. Worms, snails, rat-tailed maggots and sewage fungi increase Zone of Recovery Process is gradually reversed and the stream returns to normal, as indicated by the presence first of clams, snails, crayfish, and sow bugs, then of sunfish Calculate incident rate (# cases / population exposed) x 1000 What to throw out after a flood, type of container to use? Everything, cans or plastic bags...can keep canned food What is best to serve at a school lunch? a) home bottled veggies b)home grown and cooked veggies c) Home econ. canned veggies C How do you pack a cooler for a picnic? Pack it full What does the date on the carton of milk mean? Expiration date () Specific choices for the answer: last date the milk should be sold or last date to be consumed Schistosome dermatitis is caused by.... Blood Fluke (type of flatworm). Eggs are passed through urine or feces into fresh water and then infect new hosts by penetrating skin What soil is good for septic tanks (color) Brown/ yellow/ red What does a psychrometer measure? Relative humidity (sling psychrometer); Measures temperature and humidity Know about type A hazardous waste Degrades in 100 years What indicates a foodborne outbreak? 2 or more cases from unrelated people What is the definition of prevailing wind? are the trends in speed and direction of wind over a particular point on the earth's surface. A region's prevailing winds often reflect global patterns of movement in the earth's atmosphere. Type of tick that transfers Rocky Mountain Spotted fever? Ixcodes scapularis (deer tick) What is an institution? Community Know due process and bill of rights... as in what guarantees your right to a fair trail etc... due process (more fully due process of law) is the principle that the government must respect all of a person's legal rights instead of just some or most of those legal rights when the government deprives a person of life, liberty, or property. What is sodium thiosulfate used for? Neutralizes Cl in water sample bottle How far above a floor drain should the ice machine drain line be? Twice the diameter of the pipe Distance from top of potable water line to sink? 2.5 times the diameter and no less than 1 inch PEL for Radon? 4 pCi/l/day What type of bacteria is in the belly of a roach? Salmonella What kills the most people between the ages of 0-40? Accidents What transfers plague? flea What type of filter should be used to filter Giardia? Salvato states a 1 micrometer pore size cartridge filter at a rate of about 1 gal/ min for 500 gallons. Also shown effective is a 5 micrometer pore size filter for a 10 gallon sample High efficiency filtration What is a cement kiln used for? Incineration of hazardous waste How far apart should sleeping mats be in a childcare center? 36 inches How much more lead exposure does a toddler receive as compared to an adult Twice as much Sentence from Salvato: Adults excrete up to 95% of ingested lead, whereas children absorb half of it. NTU: what is it? Measures suspended solids - turbidity, Nephelometric turbidity unit What can you use to collect dust in a cement plant? A baghouse filter Slope in a trench 1/16 of an inch?????? A well for a private home should preferably have a capacity (well yield) of at least _______ as a minimum for domestic water use in serving a 3-bedroom house. 300 gal/hr Which respirator is the best protection? Positive pressure full face mask Incineration is good for.... Pesticides, organics, halogenated hydrocarbons, volatile organic carbons (Do not use for heavy metals) What removes hydrogen chloride as it pertains to air pollution? Scrubbers; examples include: spray towers, ejector venturis, venturi scrubbers, and packed-bed, plate, moving bed, centrifugal, impingement, and entrainment types. A high pressure liquid (water) is applied to the gas passing through the washer, filter, venturi, or other device. In doing so, the gas is cooled and cleaned. Dioxin maximum conc in drinking water 0.00003 parts per billion 1ppb????? No occupational limits have been set because it is a carcinogen and teratogen. If sick building syndrome is suspected what is the first thing to look at? a) Interview sick employees b) ventilation system c) d)?? A Is used to describe a diffuse spectrum of symptoms in which have no specific etiological factor that can be identified. May be attributed to such factors as insufficient ventilation or thermal control, inadequate maintenance of building systems, changes in thermal or contaminant loads, changes in building operation to meet new objectives such as energy conservation, and inadequate design. Investigations will be conducted by NIOSH with a team of industrial hygienists, epidemiologists and HVAC system experts. What decibel scale is used for something (sorry I can't remember) Answer choices were A, B, C, D A weighted scale What is an in-rem proceeding? Legal actions, judgments to settle properties What disease is most likely to be spread by a bite or scratch in a childcare facility? Enteric and respiratory diseases; transmission via fecal-oral route What is the most effective and long lasting way to deal with mosquitoes? a) drain the water, b) set the water in motion c) larvacide, d) ? listed with a fish that starts with a G A Characteristics of an alpha particle Positive charge; large, specific ionization, penetrate 3-5 cm in air., easily absorbed by matter What should a firefighter use to measure O2 and explosive gas levels? O2 meter and combustible gas indicator Which is not ionizing? a) x-ray b) gamma ray c) alpha/beta d) proton D How far can a fly burrow in soil? Compacted = 6 inches, 5ft uncompacted???? What would be an obvious symptom of myiasis in a baby? Infested with maggots... vomit diarrhea, skin infections infected with maggots; Periorbital swelling is common in children. It may result from trauma, infection, allergy or, rarely, tumor. Periorbital cellulitis, orbital cellulitis and dacrocystitis are the leading infectious causes of periorbital swelling and may be difficult to distinguish. Question had to do with observing maggots in a baby's nose Which is not a critical vent flow in a hospital? 1361-65 a) hallway to morgue, b) baby viewing area to hallway c) hallway to linen storage d) patient room to hallway C?????????????? Lindsay answered A (not saying that's right) Steve answered C not saying that's right either. Lacey Said A Why do bacterial testing? 292-98 a) assess type of bacteria b) assess amount of bacteria c) test potability ?????? minimum test for coliforms; positive test = likely sewage contamination Steve answered b What is the temperature 12' off the ground in winter at a childcare? (possibly inches) a) 60 b)65 c)70 (according to Terese P. at the state and Donna HB, the true answer is 68) so... C What is not a personal radiation detector? Geiger counter What is the best test for fecal contamination? Total coliform What must an employer do under the hazard communication act? MSDS provided; labeling; To ensure that employees are aware of hazards un the workplace What is the most likely cause of typhoid fever? The question had to do with what was a more likely cause: sewage runoff into a river from a chicken farm or a pit privy next to a drinking water spring. Feces and urine of carrier; contaminated water, milk or shellfish; Mainly due to sewage polluted water. Privy/sewer line next to well----steve's answer. What is the definition of aggressive water? Deionized, corrosive, soft and acidic; can corrode plumbing What would be found in a pond below a poultry and cow pen? a) legionella b) shistasoma c) leptospirosis C. Know about diseases a) major problem in hospitals; spread by aerosols and water ingestion (respiratory infection) b) flukes, snail is host to parasite c) feces of swine, cats dogs, rats, mice, foxes and sheep What to be concerned about inspecting a plot for a septic? 576-90, 556 a)area proposed or alternative system b) the well ???? Possibly B What are the three types of respirators? Air purifying cartridges, SCBA, supplied air What would not be found in high concentrations in a manure pit? 540? 707 a) ammonia trioxide b) sulfuric dioxide c) methane d) hydrogen sulfide B sulfuric dioxide What are the EPA criteria pollutants? NO2, O3, SO2, CO, Pb, Asbestos, benzene, beryllium, Hg, vinyl chloride, radio nucleotides How is Ozone formed? VOC + UV rays + NO2 How can you get listeria? Bacteria; raw milk, contaminated pasteurized milk; lunch meat (deli, hotdogs etc.) What mosquito transmits Dengue Fever? Aedes aegypti Why does the ventilation system in a building work worse in the winter when the building is sealed? convective currents; cold air, the air is messed up because of it's density; hot air is lighter and therefore a greater amount can be moved through the vents in warmer weather. What do you do it sewage is spilled in a trailer park but the operator will not talk to you or take action, or what can you do? a) get a warrant b) file a complaint, c) use a temporary injunction Possibly C, but check it out What animal should you remove to avoid psitticosis in a child care? Birds; Parakeet