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Author Question: Crown corrosion in sanitary sewers is caused by a. bacteria that produce hydrogen sulfide gas and ... (Read 69 times)

wenmo

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Crown corrosion in sanitary sewers is caused by
 
  a. bacteria that produce hydrogen sulfide gas and sulfuric acid
  b. abrasion of the pipe wall by suspended solids in the sewage
  c. normal wear and tear of the pipeline
  d. excessively high wastewater flow velocities
  e. acidic industrial wastewater

Question 2

Exfiltration testing is used to
 
  a. ensure noxious gases do not leak OUT of a sewer line
  b. determine the pumping capacity of water supply wells
  c. check the structural integrity of underground pipelines
  d. test sanitary sewers for watertightness or leaks
  e. determine the fire flow capacity of a water main



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lou

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Answer to Question 1

a

Answer to Question 2

d




wenmo

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Reply 2 on: Jul 26, 2018
Wow, this really help


rleezy04

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

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