Title
An Ordinance approving Change Order #4 to the contract with Second Sight Systems, L.L.C. for the SCADA System improvements project, an increase of $5,997.17 for a revised contract price of $448,507.30.
(NOTE: First reading by City Council on April 14, 2020. Passed by unanimous vote.)
Body
Issue/Request:
An Ordinance approving Change Order #4 to the contract with Second Sight Systems, L.L.C. for the SCADA System improvements project, an increase of $5,997.17 for a revised contract price of $448,507.30.
Key Issues:
? Network testing has demonstrated that utilizing cellular systems at Anderson, Station 6 and 5A & 5B will produce greater overall network reliability.
Proposed Council Motion:
I move for adoption of an Ordinance approving Change Order #4 to the contract with Second Sight Systems, L.L.C. for the SCADA System improvements project, an increase of $5,997.17 for a revised contract price of $448,507.30.
Background:
The SCADA System was originally constructed using AT&T leased POTs (Plain Old Telephone) lines for its communications backbone to all the remote water and waste water sites. These lines have worked well for many years but over time the utility's systems have become more complex and the data files are now larger and more numerous than ever before which is causing the lines to reach their limit at several of the larger remote sites.
To compound this issue AT&T is moving towards retiring these lines and encouraging the utility to seek other alternatives by increasing the lease rates while decreasing support. Water Utilities has been reviewing alternatives for several years to find the correct technology to replace the leased copper lines. The utility has worked with public safety to review microwave transmission, has reviewed the possibility of fiber connections, has piloted a cellular communication option and had a varieties of issues with consistency and potential costs with all of those options.
As this p...
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