TCEQ Surface Water B License Test with Questions & Answers

TCEQ Surface Water B License Test with Questions & Answers When pressure testing a new line, how much pressure do you add? - Correct Answer 1.5 times normal pressure, up to 150 pounds, whichever is greater What would cause a repeat Bac-T sample? - Correct Answer Incomplete form, not enough sample, silt or slime in the bottle, positive e-coli, all of the above What are the layers of stratification? - Correct Answer Upper layer - Epilimnion. Middle layer - Thermocline. Bottom Layer - Hypolimnion. What standard must bleach meet? - Correct Answer NSF (National Sanitation Foundation) What is the Solid contact unit? - Correct Answer Also known as a Sludge blanket unit, it is an all-in-one unit, handling mixing, flocculation and sedimentation, with an upward flow. What is the number one sludge removal process in Texas? - Correct Answer Lagooning/Lagoons. What are the Log removals for cryptosporidium, giardia and viruses? - Correct Answer Cryptosporidium - Log 2, 99%. Giardia - Log 3, 99.9%. Viruses - Log 4, 99.99%. Which two filter membranes remove the most NTUs? - Correct Answer RO (Reverse Osmosis), and Nano Filtration What are lime and soda ash used for removing? - Correct Answer Hardness What purpose does aeration serve in the softening process? - Correct Answer Releases CO2 which helps keep hardness in solution. What is the Jar Test Process? - Correct Answer Unknown What can replace primary coagulation? - Correct Answer Cationic polymers. What tells you that the chloramine ratio is off? - Correct Answer The presence of di and tri chloramines, and excessive free ammonia. What is the Right to Know law? -