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A watercourse that flows continuously at all times of the year is called? - ANSWERSPerennial stream. During the night, algae causes the pH of the water to? - ANSWERSDecrease which of the following contributes to the creation of algae blooms? - ANSWERSIncreased nutrients Which of the following is found mainly in groundwater sources and forms a precipitate when oxidized? - ANSWERSIron The Riparian Doctrine is something called the? - ANSWERSRule of Reasonable Sharing Which of the fol...

Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) - ANSWERSFalse Water Polluntants include organic and inorganic material, heat, and radiation (1-4) - ANSWERSTrue In Texas, Clean water is needed to provide for human comsumption and recreation, Maintain aquatic habitats for wildlife, recharge ground water, and provide for industry. (1-4) - ANSWERSFalse Two sources of water contamination are discharges and non- point source discharge...

Mortar Lining - ANSWERSType of physical barriers that can be placed in ductile iron pipes to reduce corrosion control Orthophosphates - ANSWERSused as a corrosion inhibitor atmospheric vacuum breaker - ANSWERStype of backflow preventer is typically found on laboratory sinks chloramines - ANSWERSconsidered a combined chlorine yellow - ANSWERScolor is gas chlorine 20.41 Gallons - ANSWERSa water system treats 4.1 mgd and wishes to maintain a chlorine residual of 0.7 ppm how many gall...

What is the criteria for a community water system? - ANSWERSHas at least 15 service connections used by all year residents,or regularly serves at least 25 all yesr residents What is the acceptable limit of copper in drinking water? - ANSWERS1.3 mg/L Which type of reservoir is rich in nutrients? - ANSWERSeutrophic What is a mechanical seal? - ANSWERSMetallic flat surfaces used to minimize leakage around the pump shaft. What is a confined aquifer? - ANSWERSAn aquifer that is bounded ab...

Always _____ a piece of equipment before attempting a repair - ANSWERSLockout/Tagout Never Tamper with a ____ on a chlorine cylinder - ANSWERSfusible plug Chlorine gas is _____ times heavier than air. - ANSWERS2.5 one volume of liquid chlorine produces ____ Volumes of gaseous chlorine under pressure - ANSWERS460 Always Change the ______ when changing a chlorine cylinder - ANSWERSLead Washer Always first _________ to a chlorine cylinder before changing the cylinder - ANSWERSturn of...

How many PPB equals one PPM? - ANSWERSOne thousand parts per billion equals one part per million If the bubbler system air supply line at the wet well is clogged, what will this cause the pump to do? - ANSWERSPressure build up in the supply line would signal more water column then there really was, causing the pump to run longer than necessary, possibly not kick off and run continually If the bubbler system air supply line at the wet well has a hole in it above the water level, what will t...

hydrologic cycle - ANSWERSThe natural exchange of water between the earth and the air Evaporation - ANSWERS______________ causes surface water to enter the atmosphere and begin the Hydrologic Cycle Precipitation - ANSWERSRain or snow falling from the clouds Condensation - ANSWERSwhat causes water vapor to form clouds Groundwater sources - ANSWERSgenerally better protected from contamination than surface water sources Goal of wastewater systems and wastewater operators - ANSWERSto ...

The water utility field affects everyone because ________. - ANSWERSwater is essential to life and health The water utility employee should remember customers are entitled to ________. - ANSWERScourteous treatment and answers to questions about water In Texas, water operator licensing is administered by the ________. - ANSWERSTCEQ All public water systems are required to employ licensed operators even if the system only________ treated water bought from another source. - ANSWERSredistri...

The only absolutely reliable method of backflow prevention is the use of - ANSWERSAir Gap The bubbles formed in a positive multiple tube fermentation test are - ANSWERSCarbon Dioxide The maximum rate of withdrawal of gas from a 150lb chlorine cylinder in 24-hours is - ANSWERS40 lbs If you encounter a liquid chlorine leak in a one tone container, what action should you take first, to reduce the severity of the leak? - ANSWERSRotate the container to place the leak at the top The most c...

______ = 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...