Question 1031 of 229 · California Water Distribution Operator Exam
Which AWWA standard does 22 CCR 64582 require for disinfecting and bacteriological sampling of a distribution reservoir that was taken out of service for repair or inspection?
Exactly one answer is correct.
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Correct answer to question 1031
- B: C652-02
Explanation
22 CCR 64582 requires disinfection and sampling of new or repaired reservoirs according to AWWA C652-02. C651 is the standard for water mains (22 CCR 64580), C600 covers installation of ductile iron mains, and C900 is a PVC pipe materials standard.
More questions: Disinfection
- 1001Why is a new or repaired water main disinfected before it is placed in service?
- 1002Under the AWWA C651 continuous-feed method, what is the minimum chlorine concentration in the new main at the start of the contact period?
- 1003Under the AWWA C651 slug method, which dose and contact time apply?
- 1004After the 24-hour contact period of the continuous-feed method, what free chlorine residual must remain in the main?
- 1005Why should a new main be flushed before the disinfectant is added?
- 1006Heavily chlorinated water flushed from a main must be dechlorinated before it reaches a storm drain or creek. Which chemical is commonly used?