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______ = BOD, lbs/day / MLVSS, lbs - ANSWERSF/M ratio In a conventional activated sludge plant, oxygen demand is highest - ANSWERSAt the head end of the tank Air requirements in an activated sludge tank are governed by - ANSWERSBOD and the desired removal efficiency, Volatile suspended solids concentration in the aerator, Suspended solids concentrations of the primary effluent It is not necessary to be a skilled microbiologist or to be able to identify or count individual species. Rathe...

Which of the following is NOT a responsibility of a Plant Operator? A. Providing safe, palatable drinking water B. Operating equipment for chemical feed, filtration disinfection and pressure maintenance. C. Testing Chlorine residuals and collecting BacT samples D. None of the Above - ANSWERSD. None of the Above All of the following regarding TCEQ and its licensing process are true EXCEPT A. TCEQ requires all public water systems to be operated continuously under the direct supervision...

What are the Office of Environmental Heath Services (OEHS) primary responsibilities? - ANSWERS-Enforcing drinking water standards -Establishing and enforcing standards and regulations for water system design, construction, operation, and maintenance, well construction and placement, pumps, treatment processes, chemical addition, well abandonment, lab certification, and wellhead protection What is an OEHS on-site inspection called? - ANSWERSSanitary surveys; their frequency and duration depen...

True or False: Operators have a responsibility to provide drinking water that meets federal and state standards. - ANSWERSTrue AnswerTrue or False: Water must be disinfected, delivered at inadequate pressure, and be ample in quantity. - ANSWERSFalse AnswerTrue or False: Utility employees should guard the water supply and facilities from contamination, public tours, and even terrorism. - ANSWERSFalse AnswerTrue or False: The state requires bacteriological sample results to be kept two ye...

Ammonia mixed with chlorine gas creates a - ANSWERSwhite smoke AnswerThe most difficult part of a water distribution operator's job. - ANSWERSfurnish a continuous supply AnswerPhysical connection between a safe and potentially unsafe water source. - ANSWERScross connection AnswerA distribution system is a - ANSWERSlooped system AnswerDead end mains should be flushed - ANSWERSevery month AnswerExcess nitrate causes a condition called - ANSWERSblue baby syndrome AnswerWater ha...

What are the steps of the Water Use Cycle? - ANSWERSEnvironment --> Water Treatment --> Water Distribution System --> Customer Use --> Wastewater Collection System --> Wastewater Treatment --> Environment AnswerWhat are the benefits of the collection system? - ANSWERS- Removal of health hazards - Prevention of odors and flies - Cleanliness and appearance - Comfort and convenience AnswerSeptic vs. Fresh wastewater? - ANSWERSSeptic wastewater doesn't contain dissolved...

What is the primary purpose of the SDWA? - ANSWERSTo create uniform national standards for drinking water quality AnswerWho sets Maximum Contaminants Levels (MCLs)? - ANSWERSUSEPA AnswerWhat are some of the duties of the EPA? - ANSWERSSets MCLs, delegates enforcement of SDWA to state agencies, provides grant funds, monitors state activities, provides continued research AnswerWhat is state primacy? - ANSWERSGiving the authority to the state to implement and enforce regulations AnswerT...

What is the name of the State Agency responsible for enforcing the Safe Drinking Water Program in Texas? a. Texas Water Development Board b. Texas Department of Water Resources c. Texas Section of EPA d. Texas Water Resource and Conservation Commission e. Texas Commission on Environmental Quality (formally known as TNRCC) - ANSWERSe. Texas Commission on Environmental Quality (formally known as TNRCC) AnswerWhat minerals are associated with water hardness? a. Chlorine and Manganese b. C...

1. How much does a cubic foot of water weigh? - ANSWERSa. 8.34 lbs b. 7.48 lbs c. 62.38 lbs d. 15.82 lbs Answer2. What is the best way to store a 150# chlorine gas cylinder? - ANSWERSa. On its side b. Above ground level c. Upright, secured from falling Answer3. Which is not a proper alternative for treatment of industrial wastewater? - ANSWERSa. Pretreatment by the IWTS followed by discharge to the POTW b. Direct discharge to receiving waters c. Discharge to POTW for treatment d. C...

R.P.P.A. - ANSWERSReduced pressure principal assembly. Backflow prevention for back siphonage and back pressure. AnswerAmerican Public Works Association color codes. White,pink,red,yellow,orange, blue, purple and green - ANSWERSWhite=proposed excavation Pink=temporary survey markings red=electric power yellow=gas,oil and steam orange=communications(phone/cable) blue=water purple=reclaimed water green=sewer and storm drains. AnswerDistance between water and sewer lines. - ANSWERSRun...