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Commissioner questions whether new thickener overflow line reflects design or communication error; staff urges trial operation
Summary
District staff said ductile iron piping for the thickener overflow was received and asked to discuss valving and sensors with Siemens; Jason Wheeler said he believed CDM Smith had ordered the new gravity thickener overflow line believing it met specs, and Commissioner Lourinia asked whether the change was a design or communication error and whether the district must accept the new line.
District staff reported receipt of ductile iron piping for interior construction related to the thickener overflow and said Siemens requested further discussion of the valving and sensors associated with the project. Jason Wheeler explained the valving and sensors would allow use of the original gravity thickener overflow line if restrictions occur in the new line.
Commissioner Lourinia questioned whether the new gravity thickener overflow line resulted from a design error or a communication error and whether the district would have to accept it. Wheeler said he believed CDM Smith had ordered the new line under the impression it met specifications and added he would like to see the new line operate for a period before accepting and signing off on it. The minutes record the exchange but show no final acceptance or direction to sign off at this meeting.
