When pressure testing a new line, how much pressure do you add? - 1.5 times normal pressure, up to 150 pounds, whichever is greater
What would cause a repeat Bac-T sample? - Incomplete form, not enough sample, silt or slime in the bottle, positive e-coli, all of the above
What are the layers ...
TCEQ Surface Water B License Exam Guide 2024 When pressure testing a new line, how much pressure do you add? - 1.5 times normal pressure, up to 150 pounds, whichever is greater What would cause a repeat Bac -T sample? - Incomplete form, not enough sample, silt or slime in the bottle, positive e -coli, all of the above What are the layers of stratification? - Upper layer - Epilimnion. Middle layer - Thermocline. Bottom Layer - Hypolimnion. What standard must bleach meet? - NSF (National Sanitation Foundation) What is the Solid contact unit? - 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? - Lagooning/Lagoons. What are the Log removals for cryptosporidium, giardia and viruses? - Cryptosporidium - Log 2, 99%. Giardia - Log 3, 99.9%. Viruses - Log 4, 99.99%. Which two filter membranes remove the most NTUs? - RO (Reverse Osmosis), and Nano Filtration What are lime and soda ash used for removing? - Hardness What purpose does aeration serve in the softening process? - Releases CO2 which helps keep hardness in solution. What is the Jar Test Process? - Unknown What can replace primary coagulation? - Cationic polymers. What tells you that the chloramine ratio is off? - The presence of di and tri chloramines, and excessive free ammonia. What is the Right to Know law? - Typically included in the MSDS. The law includes employers providing information, training and PPE for various chemicals worker may be exposed to. What is the action level for Lead and Copper in the Lead and Copper Rule? - 0.015 mg/L for Lead, 1.3 mg/L for Copper
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