2003 AGN FEB 04 I01 - Laserfiche WebLink

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CITY OF COLTON AGENDA REPORT For the Colton Utility Authority Meeting of eeaxoARY 4, 2003 Item #1 TO: HONORABLE CHAIRPERSON AND MEMBERS OF THE COLTON UTILITY AUTHORITY FROM: ERIC FRASER, DIRECTOR OF WATER AND WASTEWATER OPERATIONS SUBJECT: ADOPTION OF THE ATTACHED RESOLUTION TO DECLARE THAT AN EMERGENCY CONDITION EXISTS WITH THE CITY'S WATER SUPPLY AND DELEGATION OF AUTHORITY FOR THE CITY MANAGER TO ORDER ACTIONS TO ENSURE THE RELIABLE DELIVERY OF A PURE, WHOLESOME AND POTABLE WATER SUPPLY DATE: January 9, 2003 BACKGROUND In April of 2002 the City shut down Well Nos. 15, 17, and 24 due to the water produced by those wells exceeding the revised action level for perchlorate. Since adequate funding was not available to implement wellhead treatment, emergency inter-ties were activated with the City of San Bernardino and the Riverside Highland Water Company to meet system demand during the summer months. Additional wells were also constructed to assist with meeting the water supply needs of the City. Due to the limited amount of conveyance capacity to move water from the new wells into the Western Pressure Zone, alternative supplies will be necessary to meet system demand this summer. The reactivation of the impacted wells utilizing wellhead treatment will restore the City's water supply to pre-contamination levels. The construction of treatment facilities is considered essential in order to meet summer demand without excessive expenditures to purchase water. Purchased water is also subject to availability and is not considered to be a reliable source of supply. If the City were to issue a request for proposal (RFP) to hire an engineer to design, develop formal specifications, bid documents, and then bid and award the project, it would be highly unlikely that the project would be operational before the end of the year. Utilizing the design-build process with pre-engineered systems would allow the City to adequately respond to the emergency water supply issue in a timely and cost efficient manner. Section 22050 of the Public Contract Code allows the City Council to pass a resolution by a four-fifths vote of its membership declaring that an emergency condition exists and delegating authority to order actions required by that emergency without giving notice for bids to let contracts. DISCUSSION/ANALYSIS Through the efforts of the Perchlorate Task Force (PTF), the City recently secured $750,000 in funding from the Regional Water Quality Control Board to be used exclusively for the implementation of wellhead treatment of the perchlorate plume. These funds cannot be used to purchase replacement water or for any other purpose. The three technologies evaluated for the project were: regenerable resin ion exchange, non-regenerable resin ion-exchange, and ex-situ biological treatment. Both types of ion exchange utilize vessels filled with resin beads that attract perchlorate ions and exchange them for chloride ions similar to a water softener. The regenerable resin technology uses a separate brine solution to regenerate the resin and results in the need for regular brine deliveries and disposal of the expended brine. The single-pass or non-regenerable technology uses a resin that cannot be reactivated with brine. After the resin has been fully loaded with perchlorate, it is removed from the vessel and is incinerated off-site. The ex-situ biological treatment utilizes a fluidized bed reactor with an electron donor (usually acetic acid or ethanol) to support a mass of anoxic bacteria that assimilate the perchlorate into an enzyme. This technology requires the equivalent to