Download TCEQ- Class D water operator license study guide exam and more Exercises Advanced Education in PDF only on Docsity!
T/F: Operators have a responsibility to provide drinking water that meets Federal and State Standards - True T/F: Water must be disinfected, delivered at inadequate pressure and be ample in quantity - False (True if adequate instead of inadequate) T/F: Utility employees should guard the water supply and facilities from contamination, public tours, and even terrorism - False T/F: The state requires bacteriological sample results to be kept 2 years. - False (True if 5 years) T/F: The state requires chemical analysis to be kept at least 10 years. - True T/F: The EPA requires a water system to keep a copy of each consumer confidence report at least 5 years. - True T/F: A public water system provides the public with piped water for human consumption, serves at least 15 service connections and regularly serves at least 25 individuals daily at least 60 days out of the year - True The water utility field touches everyone because... A)water used for recreation B)water used for agriculture C)water used for industry D)water is essential to life and health - D)water essential to life and health Thew water utility employee should remember customers are entitled to... A)courteous treatment B)abuse public servants C)always be right D)answers to questions about water E)A&D - E Public systems utilizing ground water serving less than ___ connections on purchase treated water only are not required to compile ___ reports. A)50, yearly B) 150, yearly C) 50, monthly D) 100, monthly - D Job training for water utility operators is available through the...
A)American Water Works Association B)TX Water Utilities Association C)TX Engineering Extension Service D)all listed - D In TX, water operator license is administered by the... A)EPA B)TNRCC -- TCEQ C)AWWA D)TWUA - B All pubic water systems are required to employ certified operators even if the system only ___ treated water bought from another source. A)Chlorites B)Sells C)Redistributes D)Stores - C Public water systems include cities, municipal utility districts, rural water supply corporations, mobile home parts, and ___. A)private wells B)campgrounds C)public pools D)public lakes - B Examples of community water systems include... A)municipalities B)municipal utility districts C)rural water supply corporations D)mobile home packs E)all the above - E A federal agency impacting the water utility industry is the... A)TNRCC B)EPA C)AWWA D)TWUA - B The most important federal law impacting the water utility industry is the ... A)water resources development act b)federal water pollution control act c)hazard communication act d)safe drinking water act - D The 4 national safety and quality standards for drinking water covered in the Safe Drinking Water Act are physical, chemical, ___, and radiological
T/F: It is not important that the utility have a sense of pride and professionalism. - False T/F: Employees should be kept informed of utility plans and policies. - True T/F: Complaints should be treating as "griping" and investigated as a last priority. - False In small water systems, the operator is often... A)a meter reader, repair crew, and pump operator B)highest paid employee C)college graduate D)all listed - A "Stuffers" sent to customers in billing statements may contain... A)departments to call for service B)explanations of utility policy C)history of the utility D)tips on water conservation E)all of the above - E Delinquent payment notices should be... A) tactful + tasteful B)mailed in envelope C)business-like D)all listed - D The EPA requires community water systems to provide customers. A)weekly B)monthly C)yearly D)none listed - C If these reporters are attractive and easy to ___, they can build goodwill and trust with the customer A)misinterpret B)misconstrue C)misunderstand D)understand - D Good treatment of employees include fair wages, benefits, and ___ working conditions. A)tense B)safe C)hazardous D)insecure - B
After action is taken on a complaint, follow up with a phone call or ___ to make sure everything is satisfactory. A)post card B)e-mail C)letter D)A&B E)A,B,&C - E Water plant facilities should be kept neat and clean to... A)indicate your professional attitude B)keep public support C)keep confidence in the water quality D)all listed - D Listen to special requests and seek solutions to oblige the customer within... A)utility policy B)5 working days C)tradition D)secrecy - A Treat customers as though there was another water utility across the street competing for your... A)job b)employees c)customers d)revenue - NO ANSWER GIVEN T/F: The chemical symbol for water is HO2. - False (True if H2O) T/F: Water occurs in 3 forms: solid ice, liquid water, water vapor. - True T/F: The hydrologic cycle is the natural exchange of water between the earth and atmosphere. - True T/F: Average water use depends on temperature, rainfall, cost, supply, economic level. - True T/F: Groundwater is located above the earth's surface and tapped by wells. - False T/F: Surface water comes from rivers, lakes, and reservoirs. - True T/F: Future water supplies will become more plentiful according to the TNRCC/TCEQ. - False T/F: Surface water or ground water prior to treatment is called freshwater. - False
T/F: Suspended solids can be removed by filtering and dissolved solids cannot. - True T/F: Common gases found in water include hydrogen sulfide, carbon dioxide, methane, and sodium chloride. - False Chemically, water is made of... A)one atom of water B)one atom of hydrogen and one atom of oxygen C)two atoms of hydrogen and one atom of oxygen D)one atom of hydrogen and two atoms of oxygen - C The hydrologic cycle is ... A)nature's way of recycling water B)equipment used to measure distances C)the way water filters through the eearth D)the process by which water runs into rivers and lakes - A The quality standard for all public water supplies is based on the use of water for... A)fire fighting B)drinking C)bathing D)swimming - B One of the most important purposes of a public water supply is... A)swimming B)landscape watering C)car washing D)firefighting - D Organic matter includes... A)sand B)plants, animals, and humans C)minerals D)all listed - B The most important treatment process is ___, which destroys disease-causing organisms. A)filtration B)disinfection C)softening D)fluoridation - B Public water systems are required to compile a monthly report showing... A)rate increases B)accidents C)dates of dead end flushing
D)disciplinary action - C Most ground water is relatively free of suspended matter, but ___ can be a major problem in surface water. A)turbidity B)gases C)sand D)hot water - A Color in a public water supply should be... A)at least 15 units B)under 3 units C)less than 15 units D)red - C Chemical characteristics include hardness, pH, solids, and... A)gases B)taste C)temperature D)color - A Water is considered hard when it exceeds ___ mg/l of calcium carbonate. A)0. B) C) D)1000 - C A gallon of water weighs 8/34 pounds and 1 mg/l equal 1 ___. A)million grams B)thousand grams C)part per thousand D)part per million - D Hydrogen sulfide is heavier than air, colorless, flammable, toxic, and has a ___ odor. A)sweet B)rotten egg C)rotten fish D)fragrant - B Excessive nitrates in drinking water can cause ___ syndrome in infants. A)bad baby B)blue body C)bloody baby D)blue baby - D Excessive amounts of fluoride may cause ___ or staining of teeth.
T/F: No source of contamination is allowed within 500 ft of a public well. - False (True if 50 ft instead of 500) T/F: One way to reduce sand pumping is to increase the pump rate and cycle more. - False T/F: Water from a new well must not be used until bacteriological samples on 3 successive days show coliform found. - False (True if coliform not found) T/F: The water level without the pump running is called the static level, the water level with the pump running is called the pumping level, and the difference between the two is called the dropdown. - False (True if it was a drawdown instead of dropdown) T/F: Ground water usually contains more dissolved minerals and gases than surface water, but fewer ___. A)microorganics B)microorganisms C)corrosives D)dissolved solids - A Water table wells are usually ___ wells. A)deep wells B)artesian C)shallow D)all listed - C In a water table well, the cone of depression is a ___ area around the well. A)dewatered B)depressed C)deflated D)developed - A A sanitary control easement must cover land w/in ___ ft of public well. A) B) C) D)15 - C Livestock and septic tanks must be no closer than ___ ft to public well. A) B) C) D)5 - C Underground fuel tanks and septic drainage fields must be at least ___ ft from a public well.
A)
B)
C)
D)15 - C
Feedlots, sewage treatment plants, and landfills must be at least ___ feet from a public well. A) B) C) D)50,000 - B A well may be developed by surging, overpumping, jetting, and... A)backwashing B)backflushing C)backflooding D)backfilling - A To disinfect a new well, a chlorine dosage of at least ___ mg/L of chlorine is required. A) B) C) D)50 - D A sample for physical and chemical analysis must be taken after ___ hours of pumping. A) B) C) D)63 - C Changes in well water levels or the volume of water produced can alert the operator to a drop in the water table, screen stoppage or damage to the ___. A)sealing block B)pump C)vent D)sampling faucet - B Common deep well pumps include the ___ and the vertical turbine. A)submarine B)subsidence C)submission D)submersible - D Gases such as methane, carbon dioxide, and hydrogen sulfide are reduced by ___. A)backwashing B)sequestering
T/F: A filter must be whitewashed when a head loss of 6 to 10 ft occurs. - False (True if it was backwashed instead of whitewashed) Most surface water is low in minerals, gases, and ___. A)algae B)turbidity C)dissolved solids D)bacteria - C Quality water has low amounts of color, turbidity, solids and ___. A)oxygen B)taste and odor C)hydrogen D)all listed - B Pretreatment includes lake destratification, control of algae, debris removal, presedimentation, aeration, ___ and activated carbon adsorption. A)chemical oxidation B)filtration C)terminal disinfection D)backwashing - A Copper sulfate in dosages of ___ and approved algaecides control algae blooms. A)10 to 50 mg/l B)1 to 5 mg/l C)0.1 to 0.5 mg/l D)0.01 to 0.05 mg/l - C The most effective treatment for taste and odor is adsorption with ___. A)activated carbon B)chlorine C)ferric chloride D)copper sulfate - A The process of using chemicals to clot particles together is called... A)sedimentation B)filtration C)coagulation and flocculation D)all listed - C Lime is applied to water to ___... A)coat water mains B)adjust pH or alkalinity C)prevent tooth decay D)prevent algae - B
Detention time in sedimentation basins must be at least ___ hours to allow floc at settle. A) 6 B) 5 C) 4 D)3 - A Factors effecting sedimentation basins are the weight of floc, ___, detention time, and short circuiting. A)water temp B)water velocity C)taste and odor D)a&b - A Backwashing should expand the filter bed by ___ percent. A)5 to 10 B)15 to 20 C)25 to 30 D)30 to 50 - D A common filter problem is ___, prevented by proper backwashing. A)ice B)mud balls C)detention time D)coagulation - B Chemicals used disinfection are chloramine, chlorine, chlorine dioxide, and ___. A)ferrous sulfate B)copper sulfate C)activated carbon D)ozone - D T/F: Disinfection destroys disease-causing microorganisms called pathogens. - True T/F: Disinfection destroys pathogens without sterilizing the water. - True T/F: Waterborne pathogens live and grow in the intestines of infected people. - True T/F: Infected fecal matter entering a water supply transmits pathogens to healthy people. - True T/F: Some disease transmitted by unsafe water include typhoid, dysentery, cholera, measles, polio, cryptosporidiosis. - False (True if list did not include measles) T/F: Each water sample is tested for all waterborne diseases. - False
D)trihalomethane - B Chlorination is the most important process in the production of ___ water. A)public B)private C)potable D)political - C Besides disinfection, chlorine is used for taste and odor control and ___. A)oxidation of iron and manganese B)oxidation of hydrogen sulfide C)disinfection of repairs D)all listed - D Bleach used in public water systems must be ___ approved. A) AWWA B) TEEX C) OSHA D) NSF - D Sodium hypochlorite is a liquid ___. A)bleach B)sodium C)chlorine D)hydroxide - A Calcium hypochlorite is made by reacting chlorine with ___. A)sodium B)lime C)bleach D)salt - B Calcium hypochlorite will cause explosions or fires if it contacts ___ material. A)organic B)inorganic C)suspended D)dissolved - A At room temperature chlorine gas is greenish-yellow, has pungent odor, is ___ times heavier than air. A) B)1. C)2. D)3 - C
The maximum sustained gas withdrawal rate from 150 lb cylinders (vacuum transmission) is ___ lb/day per degree F A) B) C) D)1 - D Disinfection capacity for drinking water must be ___ percent greater than the highest expected dosage. A) B) C) D)60 - C Small water systems often use ___ to disinfect their water supply. A)hydrochlorinators B)hypochlorinators C)hyperchlorinators D)hydrachlorinators - B Hypochlorinators consist on of a mixing tank, water, ___, hypochlorite or ___ hypochlorite and a chemical pump. A)sodium/calcium B)salt/lime C)hydrogen/oxygen D)green/yellow - A Gas chlorinators use a rotameter to meter chlorine in ___ or grams/hr. A)lbs/minute B)lbs/hour C)lbs/day D)gal/minute - C Dosage is the amount of chemical applied, demand is the amount of chemical used up, ___ is the amount of chemical remaining after reacting with demand. A)breakpoint B)chloramine C)residual D)combined - C Minimum chlorine residuals of ________ (free) and ________ (combined) are required in the far reaches of the distribution system. A)0.5/0. B)5/ C)2/ D)0.2/0.5 - D
T/F: Pressure inside a hydropneumatic tank is provided by air mechanically compressed against the water surface. - True T/F: The exterior and interior of ground, elevated, standpipe and pressure tanks must be inspected monthly. - False (True if it was yearly instead of monthly) T/F: Storage tank inspect results must be kept at least 5 years. - True T/F: Cathodic protection is an electrochemical method of preventing corrosion of the exterior of metal tanks. - False (True if it said interior instead of exterior) T/F: Owership signs must include the utility name and emergency phone number at each production, treatment, or storage site. - True T/F: Chain link fence material must leave a gap at the ground to trim grass. - False T/F: The State requires stored water to a have disinfectant demand. - False (True if it was residual instead of demand) T/F: After construction or maintenance of a storage tank a bacteriological sample must be taken after filling the tank. - True T/F: If the bacteriological sample is negative, more samples must be taken until 2 consecutive samples are positive. - False T/F: Critical safeguards of a distribution system include a chlorine residual, adequate pressure, bacteriological sampling and cross connection control - True T/F: The TNRCC (TCEQ) requires that distribution pressure never fall below 20 psi, even during emergencies, and normal distribution pressure must be at least 35 psi. - True T/F: Material used in water line construction must meet TWUA specifications and should not affect the taste, odor, or quality of the water. - False (True if it was AWWA instead of TWUA) T/F: Plastic pipe must be NSF approved and have an ASTM pressure rating of at least 50 psi or a standard dimension ratio of 62 - False (True it if it was 26 instead of 62) T/F: Select pipe on the basis of strength, length, carrying capacity, durability, ease of installation, availability, soil conditions, and cost - False T/F: Pipe and fittings containing more than 8.0 percent lead, or solders and flux containing more than 0.2 percent lead is prohibited in a public water supply. - True
T/F: Isolating valves turn off sections of a system and gate valves are most common. - True T/F: Flushing solves problems of taste, odor, red water, or bad samples. - True T/F: The positive displacement meter is the most common design for residential use. - True T/F: Mains must be no closer than 10 feet, in all directions, from sewers or manholes. - False (True if it was 9 ft instead of 10) Trenches for laying 6 inch and larger pipe must be at least 18 inches wide and ___ inches wider than the pipe diameter. A) 12 B) 10 C) 8 D) 6 - A The top of a pipe in a trench must have at least ___ inches of cover. A) B) C) D)12 - B Do not work in a trench ___ feet or deeper unless it is protected from cave-in. A) B) C) D)4 - C Using timber, plywood, or commercial devices to support an excavation is known as... A)sloping B)shoring C)sheeting D)bracing - B Shoring is not necessary if the trench walls are sloped to the maximum allowable ___. A)slope B)recline D)dispose D)repose - D Place soil banks at least ___ feet from the excavation. A) B) C)
