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TCEQ EXAM with Questions & Answers Verified.
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TCEQ EXAM with Questions & Answers Verified.
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TCEQ EXAM with Questions & AnswersFecal Coliform - (correct answer) -_____ ______ found in drinking water indicates the water is
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contaminated with potentially pathogenic organisms that may be harmful
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Hepatitis, typhoid, cholera, and dysentery are all waterborne diseases that are preventable with proper
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disinfection. - (correct answer) -Hepatitis, typhoid, ______, and _________ are all waterborne diseases
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that are preventable with proper disinfection.
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Calcium Hypochlorite is a solid form of chlorine that is used by some small water systems to maintain a
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chlorine residual. - (correct answer) -______ ______ is a solid form of chlorine that is used by some small
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water systems to maintain a chlorine residual.
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The chlorine demand represents the amount of chlorine used by reducing agents and other impurities
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before a chlorine residual is formed. - (correct answer) -The chlorine _______ represents the amount of
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chlorine used by reducing agents and other impurities before a chlorine residual is formed.
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Disinfection is commonly referred to as the most important water treatment process. - (correct answer)
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-__________ is commonly referred to as the most important water treatment process.
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The main component of a hypo-chlorination system is a solution feed pump. - (correct answer) -The
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main component of a hypo-chlorination system is a ________ ________ pump.
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Components of a chlorine gas feed system include a steel chlorine cylinder, scale and rotameter. -
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(correct answer) -Components of a chlorine gas feed system include a steel chlorine cylinder, ______,
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and ________.
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Under non-emergency conditions, the chlorine residual for disinfecting new or repaired water main is
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___ mg/L. - (correct answer) -Under non-emergency conditions, the chlorine residual for disinfecting
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new or repaired water main is 50 mg/L.
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Under emergency conditions, TCEQ allows water main disinfection to be accomplished with a 500 mg/L
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chlorine dose for 30 minutes. - (correct answer) -Under emergency conditions, TCEQ allows water main
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disinfection to be accomplished with a ____ mg/L chlorine dose for ___ minutes.
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Most Calcium Hypochlorite (HTH) contains about 65% available chlorine. - (correct answer) -Most
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Calcium Hypochlorite (HTH) contains about ___% available chlorine.
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Chlorine dosage is the combination of demand plus the desired residual. - (correct answer) -Chlorine
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dosage is the combination of demand plus the desired _______.
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The point at which all organic compounds, ammonia, and reducing agents have reacted with the
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chlorine dose is called the Breakpoint. - (correct answer) -The point at which all organic compounds,
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ammonia, and reducing agents have reacted with the chlorine dose is called the ________.
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After flushing and disinfecting newly installed water line, a bacteriological sample should be collected
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every 1,000 feet along the new water main. - (correct answer) -After flushing and disinfecting newly
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installed water line, a bacteriological sample should be collected every _____ feet along the new water
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main.
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, Cryptosporidium is very resistant to chlorine disinfection. - (correct answer) -_____________ is very yi yi yi yi yi yi yi yi yi yi yi yi
resistant to chlorine disinfection.
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1 MGD = 694.4 gpm - (correct answer) -1 MGD = _____ gpm
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1 foot = 0.433 psi - (correct answer) -1 MGD = 694.4 gpm
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2.31 feet = 1 psi - (correct answer) -____ feet = 1 psi
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1 mile = 5,280 feet - (correct answer) -1 mile = ______ feet
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Volume, gal = 0.785 x D x D x Depth x 7.48 7.48 gal/cu ft - (correct answer) -_________ = 0.785 x D x D
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x Depth x 7.48 gal/cu ft
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Volume, gal = L x W x D x 7.48 gal/cu ft - (correct answer) -Volume, gal = 0.785 x D x D x Depth x 7.48
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7.48 gal/cu ft
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Drawdown, ft = Pumping Water Level, ft - Static Water Level, ft - (correct answer) -__________ =
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Pumping Water Level, ft - Static Water Level, ft
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Pounds Chlorine = Pounds at 100% ÷ % Available Free Chlorine Ex: Pounds of 65% HTH = 10 lb Cl2 gas
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÷ 0.65 = 15.4 lb HTH - (correct answer) -What is the formula to convert pounds of 100% chlorine gas
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to pounds of 65% HTH?
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Dose, mg/L = Demand, mg/L + Residual, mg/L - (correct answer) -_________ = Demand, mg/L +
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Residual, mg/L
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lb/day = (Flow, MGD) x (Dose, mg/L) x 8.34 - (correct answer) -What is the formula for calculating
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pounds per day (lb/day) of chlorine?
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An aquifer is a porous, underground formation that is capable of delivering large quantities of water. -
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(correct answer) -An _______ is a porous, underground formation that is capable of delivering large
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quantities of water.
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Drawdown is the difference between the static water level and the pumping water level in a well. -
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(correct answer) -__________ is the difference between the static water level and the pumping water
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level in a well.
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An air line is commonly used to determine the water level in well. - (correct answer) -An air line is
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commonly used to determine the _____ _____ in well.
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Drawdown is the difference between the static water level and pumping water level in a well. - (correct
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answer) -________ is the difference between the static water level and pumping water level in a well.
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The well screen allows water to pass through but keeps the sand out of the well. - (correct answer) -The
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well ______ allows water to pass through but keeps the sand out of the well.
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The two most commonly used deep well pumps are the submersible and the vertical turbine pumps. -
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(correct answer) -The two most commonly used deep well pumps are the _________ and the ______ _____
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pumps.
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Groundwater is generally low in turbidity and organic contaminants but high in mineral content. -
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(correct answer) -Groundwater is generally ___ in turbidity and organic contaminants but ___ in mineral
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content.
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