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• As a result of these events, three of the six production wells for the South County plant have been out of service at various times. the three wells are well numbers 3, 4, and 6. Wells 1, 2, and 5 are currently in production and meeting the minimum requirement for water supply for the treatment plant. At the present time the plant is involved in a scheduled membrane replacement. One of the four RO treatment trains has been taken off line and is undergoing membrane replacement. 1 his has reduced the plant demand on the well field. Under this condition, these three wells are capable of meeting the treatment plant's production needs. As a result of the scheduled membrane replacement and well rehabilitation projects, staff has expedited several precautionary steps to insure that overall system demand continues to be met. 1 he first of these steps was to procure, on an emergency basis, a temporary, reusable backup pump. This pump has been installed in well number 4 and is providing additional water supply reliability for the south water treatment plant. The cost for purchase and installation of this emergency backup pump is $15,850.00. (See attached draft CDM change order). the second precautionary step to insure that overall system demand is met, was to extend the production hours of the North RO plant. This step will insure that all available water storage remains full in the event of a major water main break or if a fire occurs. 1 he staff of the Department of Utilities is requesting approval of Change Order No. 1 for Work Authorization Number 15 in the estimated amount of $197,290.00 ($145,440 + $36,000 + $15,850). The following is a summary of change order number 1: Description Amount Original Contract Price $332,520.00 Estimated cost of repairs to well system number 4 $145,440.00 Estimated cost of repairs to pump number 6 $ 36,000.00 Cost of purchase and installation of emergency backup pump $ 15,850.00 Amended Contract Price as a result of change Order Number 1 $529,810.00 RECONIMENDATION It is the recommendation of the Staff of the Department of Utility Services that the Board of County Commissioners approve Change Order Number # 1, in the amount of $197 290.00, for an amended contract price of $529,810.00. Staff further requests that the Chairman execute Change Order if 1 contingent upon County Attorney's review and acceptance of the change order for legal sufficiency. FUNDING SOURCE 471-000-169-391.00 LIST OF EXHIBITS: 1. Agenda Item dated December 12, 2000 2. Draft CDM Change Order Number 1 / Cost Estimate February 12, 2002 61 Qu 1.s'1 PJ 507 •