TCEQ Class A Prep Part 1 Questions And
Answers Graded A+
The minimue allowable pressure in the distribution system under emergency conditions is
20 psi
Water vapor given off by plants and trees is know as tranpiration
organic matter includes wood,dogs,algae,bacteria
The single most important water treatment process is disinfection
excessive nitrates in drinking water can cause what syndrom in infants blue baby
A sanitary control easement must cover land within how many feet of a public water well
150 feet
A sample for physical and chemical analysis of a new well must be taken after how many hours
of continuous pumping 36 hours
Chapter 290 Rules and Regulations requries chemical analysis of water supplies every
year
, Detention time in sedimetation basins must be at least how many hours to allow floc to settle
six
backwashing should expand the filter media by 30 to 50 percent
In Texas, all public water systems are required to have what facilities chlorination
The MCL for Trihalomethanes in drinking water is 0.080 mg/l
At room temperatures chlorine gas is greenish-yellow , has pungent odor, and is 2.5
heaver then air
Disease that may be spread by inadequately disinfected water are typhoid, cholera,
infectious hepatitis, legionnaires disease.
minimum chlorine residuals of free and toral in the far reaches of the distribution system is
.2/.5
Parameters that effect coagulation are Turbidity, PH and Alkalinity
coagulant and dosage.
Do not work in a trench ________ feet or deeper unless it is protected from cave-in 5 feet
Answers Graded A+
The minimue allowable pressure in the distribution system under emergency conditions is
20 psi
Water vapor given off by plants and trees is know as tranpiration
organic matter includes wood,dogs,algae,bacteria
The single most important water treatment process is disinfection
excessive nitrates in drinking water can cause what syndrom in infants blue baby
A sanitary control easement must cover land within how many feet of a public water well
150 feet
A sample for physical and chemical analysis of a new well must be taken after how many hours
of continuous pumping 36 hours
Chapter 290 Rules and Regulations requries chemical analysis of water supplies every
year
, Detention time in sedimetation basins must be at least how many hours to allow floc to settle
six
backwashing should expand the filter media by 30 to 50 percent
In Texas, all public water systems are required to have what facilities chlorination
The MCL for Trihalomethanes in drinking water is 0.080 mg/l
At room temperatures chlorine gas is greenish-yellow , has pungent odor, and is 2.5
heaver then air
Disease that may be spread by inadequately disinfected water are typhoid, cholera,
infectious hepatitis, legionnaires disease.
minimum chlorine residuals of free and toral in the far reaches of the distribution system is
.2/.5
Parameters that effect coagulation are Turbidity, PH and Alkalinity
coagulant and dosage.
Do not work in a trench ________ feet or deeper unless it is protected from cave-in 5 feet
