Exam (elaborations)
TCEQ Class A prep Part 1 with Questions & Answers
- Course
- Institution
TCEQ Class A prep Part 1 with Questions & Answers
[Show more]
Content preview
TCEQ Class A prep Part 1 with Questions &Answers
In Texas, water operator licensing is administer by the? - (correct answer) -TCEQ
yi yi yi yi yi yi yi yi yi yi yi yi
Which minerals cause hardness in water - (correct answer) -magnesium and calciumT
yi yi yi yi yi yi yi yi yi yi yi
the most importan federal law impacting the water utility industry is - (correct answer) -Safe Drinking
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
Water Act
yi yi
The four water quality standards established for drinking water in the Safe Drinking Water Act are
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
chemical, bacteriological,radiological and - (correct answer) -chemical, bacteriological,radiological and
yi yi yi yi yi yi yi yi yi
physical.
yi
The minimue allowable pressure in the distribution system under emergency conditions is - (correct
yi yi yi yi yi yi yi yi yi yi yi yi yi
answer) -20 psi
yi yi yi
Water vapor given off by plants and trees is know as - (correct answer) -tranpiration
yi yi yi yi yi yi yi yi yi yi yi yi yi yi
organic matter includes - (correct answer) -wood,dogs,algae,bacteria
yi yi yi yi yi yi
The single most important water treatment process is - (correct answer) -disinfection
yi yi yi yi yi yi yi yi yi yi yi
excessive nitrates in drinking water can cause what syndrom in infants - (correct answer) -blue baby
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
A sanitary control easement must cover land within how many feet of a public water well - (correct
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
answer) -150 feet
yi yi yi
A sample for physical and chemical analysis of a new well must be taken after how many hours of
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
continuous pumping - (correct answer) -36 hours
yi yi yi yi yi yi yi
Chapter 290 Rules and Regulations requries chemical analysis of water supplies every - (correct
yi yi yi yi yi yi yi yi yi yi yi yi yi
answer) -year
yi yi
Detention time in sedimetation basins must be at least how many hours to allow floc to settle - (correct
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
answer) -six
yi yi
backwashing should expand the filter media by - (correct answer) -30 to 50 percent
yi yi yi yi yi yi yi yi yi yi yi yi yi
In Texas, all public water systems are required to have what facilities - (correct answer) -chlorination
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
The MCL for Trihalomethanes in drinking water is - (correct answer) -0.080 mg/l
yi yi yi yi yi yi yi yi yi yi yi yi
At room temperatures chlorine gas is - (correct answer) -greenish-yellow , has pungent odor, and is 2.5
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
heaver then air
yi yi yi
Disease that may be spread by inadequately disinfected water are - (correct answer) -typhoid, cholera,
yi yi yi yi yi yi yi yi yi yi yi yi yi yi
, yi infectious hepatitis, legionnaires disease. yi yi yi
minimum chlorine residuals of free and toral in the far reaches of the distribution system is - (correct
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
answer) -.2/.5
yi yi
Parameters that effect coagulation are - (correct answer) -Turbidity, PH and Alkalinity
yi yi yi yi yi yi yi yi yi yi yi
coagulant and dosage. yi yi
Do not work in a trench ________ feet or deeper unless it is protected from cave-in - (correct answer) -5
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
feet
yi
Place spoil banks at least ________ feet from the excavation - (correct answer) -2
yi yi yi yi yi yi yi yi yi yi yi yi yi
dose new water mains with a minimum of ----mg/l or more chlorine for at least how many hours -
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
(correct answer) -100mg/l-3hours or 25mg/l -24 hours
yi yi yi yi yi yi yi
one bacteriological sample is required for each ------ of new completed main - (correct answer) -1000
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
feet of line
yi yi yi
A cross connection is a physical connection between a public water supply and ? - (correct answer) -1)
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
another supply of unknown or questionable quality 2) any source that may contain contamination and
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
3) any water that is treated to a lesser degree.
yi yi yi yi yi yi yi yi yi yi
maximum spacing between ladders in a trench is - (correct answer) -50 feet
yi yi yi yi yi yi yi yi yi yi yi yi
when should a rapid sand filter be backwashed? - (correct answer) -when its dirty, when water will no
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
longer pass through the filter, loss of head of 6 to 10 feet, turbidity reading higher than 0.5 NTU
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
a ditch 4 feet wide , 6 feet deep and 1000 feet long will ve excavated . how many cubic yards of pipe
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
bedding will be needed to to bed the trech 7 inches deep. - (correct answer) -This is a volume
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
question. so you would multiplied 4 feet by 1000 feet and convert this 7 inches to percent them
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
multiplied that to get your leanth times with times height . that gives you the cubic feet so you need to
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
devide by 27 to get the cubic yards 85.9 yd3
yi yi yi yi yi yi yi yi yi yi
how many gallons will 5000 feet of 18 inch water pipe hold ? - (correct answer) -this is volume question
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
so find the volume of a cylinder. convert 18 to feet first then 3.14x r squared x 7.48 (1 cubic foot of
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
water) so this one will look like 3.14x.75x.75.5000x7.48=66057.75 gallons ( round up)
yi yi yi yi yi yi yi yi yi yi yi yi
A tank that has a capacity of 700,000 gallons must be disinfected with a dosaged of 50 mg/l of
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
chlorine. how much 65% HTH will it take to achive the same goal - (correct answer) -mgdx8.34.50 is
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
your normal forumal to find lbs of chlorine. how ever we need that is for 100 % we have 65% so you
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
will need to .7mgdx8.34x50mg/l /.65 =449.07
yi yi yi yi yi yi
The minimum residual water pressure required by Rules and Regulations for publics water systems (30
yi yi yi yi yi yi yi yi yi yi yi yi yi yi
TAC Chapter 290 subchapter D ) is - (correct answer) -20 psi under demand conditions
yi yi yi yi yi yi yi yi yi yi yi yi yi yi yi
Dead end mains should be flushed every - (correct answer) -month
yi yi yi yi yi yi yi yi yi yi
water hardness is caused by - (correct answer) -calcium and magnesium salts
yi yi yi yi yi yi yi yi yi yi yi
transpiration is - (correct answer) -the release of water vapor into the air by plants
yi yi yi yi yi yi yi yi yi yi yi yi yi yi
The presents of nitrates in water can cause - (correct answer) -blue babies
yi yi yi yi yi yi yi yi yi yi yi yi
The federal agency that provides standard for maximum allowable concentrations of inorganics
yi yi yi yi yi yi yi yi yi yi yi
chemicals in potable water is - (correct answer) -The Environmental protection Agency
yi yi yi yi yi yi yi yi yi yi yi yi
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Wisdoms. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now