Explanation
BACKGROUND: This Ordinance authorizes the Director of Public Utilities to modify and increase the construction contract with Danis Industrial Construction Co. for the Dublin Road Water Plant Disinfection & Miscellaneous Improvements - Sodium Hypochlorite Facility, for the Division of Power and Water. Modifications are needed due to unforeseen conditions found during construction.
The contract modifications include: a) additional paving work including removal and replacement of deficient asphalt at the parking lot east of the plant, b) electrical duct bank repair at the northwest corner of the plant, c) revisions to the electrical upgrades at the existing switchgear (Motor Control Center) located adjacent to the High Service Pump Building, d) installation of three additional circuit breakers in the Bulk Chemical Building electrical substation to facilitate interface between the new electrical substation and existing carbon dioxide feed panels, and e) a contingency of $30,000.00. The total amount of this modification is $159,623.00, a 1.9% increase of the original contract cost.
1. Amount of additional funds to be expended: $159,623.00
Original Contract Amount: $8,389,500.00
Amount of original contract and this modification: $8,549,123.00
2. Reasons additional goods/services could not be foreseen:
· Regarding the paving work, the asphalt base conditions were found to be different than anticipated during design due to apparent substandard installation as part of the original installation in the 1970's. Additional installation effort required for resurfacing due to these subsurface deficiencies.
· Existing electrical duct bank deficiencies discovered during course of construction. Deficiencies needed to be repaired prior to proceeding with placement of new full depth concrete pavement in vicinity of duct bank. Failure to correct these deficiencies prior to continued construction would have had a negative impact on the...
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