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<br />Request for Authorization: Water System Controls Upgrade, Project 10-7
<br />October 26, 2010
<br />Legislative History: On August 25, 2010 the United States Army, at its annual meeting with City staff, approved
<br />the annual budget for the water treatment system operation that the Army funds pursuant to its Litigation
<br />Settlement Agreement with the City. The proposed control system upgrade project was part of that budget, and
<br />both the project and procurement approach have been discussed with the Army.
<br />Financial Impact: The following estimates of cost are taken from the Report, and are the basis for Army
<br />approved budget:
<br />These estimates are considered to be Class 3 estimates in accordance with the Cost Estimate Classification
<br />System of the AACE International (Association for the Advancement of Cost Engineering). A Class 3 estimate is
<br />based on up to about 40% definition of project details and is suited for budget or authorization purposes. For a
<br />Class 3 estimate, the actual cost can be expected to be within the range falling from 30 percent below the estimate
<br />to 60 percent above the estimate. In this case, the total actual cost can be expected to be between about $200,000
<br />and $470,000.
<br />Explanation: The City's water supply control system is a relatively complex combination of electronic
<br />instruments, industrial control systems, and communication and computer systems that allow for automation,
<br />operational control, and the recording and reporting of information about operations for management and
<br />regulatory compliance purposes. The City's current water supply control system has evolved into its current
<br />configuration over an extended period of time as a result of a number of separate but related projects that were
<br />driven by the need for complete reconstruction of the City's water supply system in order to respond to
<br />contamination emanating from the Twin Cities Army Ammunition Plant ("TCAAP").
<br />Most of the core components of the water supply control system date from installation during the original
<br />construction of the facilities in the early to mid 1990s. Many of the components are approaching 15 to 20 years of
<br />service. For electronic technology, that is well beyond typical service life. For many of the components, the
<br />technology that is employed is no longer supported, and replacement parts are difficult to come by or are
<br />unavailable. The communication protocol that connects all of the critical core components is no longer supported.
<br />Material
<br />and
<br />Equipment
<br />Costs
<br />Professional Services
<br />Cost (In -Control)
<br />Total
<br />Water Treatment Plant No. 1
<br />Panel Al
<br />Panel Al (Fridley)
<br />Panel A2
<br />$25,000
<br />$10,000
<br />$17,000
<br />$22,000
<br />$14,000
<br />$14,000
<br />$47,000
<br />$24,000
<br />$31,000
<br />Control Valve Station
<br />$7,000
<br />$8,000
<br />$15,000
<br />Wellhouse 4
<br />$9,000
<br />$12,000
<br />$21,000
<br />Wellhouse 8
<br />$7,000
<br />$8,000
<br />$15,000
<br />Wellhouse 9
<br />$7,000
<br />$10,000
<br />$17,000
<br />Wellhouse 10
<br />$18,000
<br />$11,000
<br />$29,000
<br />Wellhouse 11
<br />$19,000
<br />$11,000
<br />$30,000
<br />Wellhouse 12
<br />$18,000
<br />$11,000
<br />$29,000
<br />Wellhouse 14
<br />$7,000
<br />$10,000
<br />$17,000
<br />Wellhouse 15
<br />$7,000
<br />$10,000
<br />$17,000
<br />Estimated Totals
<br />$151,000
<br />$141,000
<br />$292,00
<br />0
<br />These estimates are considered to be Class 3 estimates in accordance with the Cost Estimate Classification
<br />System of the AACE International (Association for the Advancement of Cost Engineering). A Class 3 estimate is
<br />based on up to about 40% definition of project details and is suited for budget or authorization purposes. For a
<br />Class 3 estimate, the actual cost can be expected to be within the range falling from 30 percent below the estimate
<br />to 60 percent above the estimate. In this case, the total actual cost can be expected to be between about $200,000
<br />and $470,000.
<br />Explanation: The City's water supply control system is a relatively complex combination of electronic
<br />instruments, industrial control systems, and communication and computer systems that allow for automation,
<br />operational control, and the recording and reporting of information about operations for management and
<br />regulatory compliance purposes. The City's current water supply control system has evolved into its current
<br />configuration over an extended period of time as a result of a number of separate but related projects that were
<br />driven by the need for complete reconstruction of the City's water supply system in order to respond to
<br />contamination emanating from the Twin Cities Army Ammunition Plant ("TCAAP").
<br />Most of the core components of the water supply control system date from installation during the original
<br />construction of the facilities in the early to mid 1990s. Many of the components are approaching 15 to 20 years of
<br />service. For electronic technology, that is well beyond typical service life. For many of the components, the
<br />technology that is employed is no longer supported, and replacement parts are difficult to come by or are
<br />unavailable. The communication protocol that connects all of the critical core components is no longer supported.
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