Loading...
HomeMy WebLinkAbout1994-01-12; Municipal Water District; 0112.01; Project to Line & Cover Maerkle ReservoirCARLSBAD MUNICIPAL WATER DISTRICT - AGENDA BILL AB # 0112-01 MTG. DEPT. 01/12/94 TITLE: PROJECT TO LINE & COVER MAE= RESERVOIR DEPT. HD. CITY ATTY CITY MGR. ~~ RECOMMENDED ACTION: Staff is requesting that the Commission agree to proceed with the design to line and cover the Maerkle Reservoir Facilities. ITFM EXPLANATION: This project is the result of a directive from the State of California Department of Health Services and also from the Needs Study performed for the District by Dudek & Associates (formerly Luke-Dudek Civil Engheers, Inc.) With Board approval, the first of three phases of this project began in 1988 with the design and construction of a 10 million gallon water storage facility. This storage facility was constructed to help offset the loss of operational storage anticipated when the large open reservoir was drained for the lining and covering phase. Upon completion of this 10 million gallon facility the second phase of this project began in 1991 with the design and construction of pumping facilities and chloramination facilities. Because of the District's water distribution system hydraulics, about 400 acre feet of water stored in this Maerkle Reservoir was available. With the addition of the pumping facilities, 200 additional acre feet of water in the Maerkle Reservoir is now available. In addition, the construction of the chloramination facilities allows the district to utilize the water in the Maerkle Reservoir with water in the system that comes directly from Metropolitan Water District. The third phase of the project began in 1992 with the design of the lining and covering phase. At the June 23, 1993 CommiSsion meeting a presentation was made by the consultant John Powell and Associates. This presentation reviewed the 10% design report and staff recommendation was to proceed with the design. The Commission requested some additional information including filtration alternatives and utilizing a concrete liner rather than an asphalt liner. At the July 28, 1993 Commission meeting these alternatives were reviewed and costs were presented. After discussion it was decided to write to the Department of Health Services requesting an exemption from lining and covering the reservoir. At the November loth meeting three items pertaining to the lining and covering project were reviewed by the Commission. The concrete liner option and construction of a filtration plant were determined to be infeasible. The third item reviewed was the response from the Department of Health Services to the District's request for an exemption from lining and covering the reservoir. After discussion of this item the Commission requested staff to ask the Department of Health Services to review their response with the Commission at the next Commission meeting. ’ Agenda Bill No. 0112-01 Page 2 At the December 8, 1993 Commission meeting representatives of the County Water Authority and the Department of Health Services were present. A review of the 10-day storage policy by the County Water Authority representative was made. In addition, Ms. Toby Roy from the Department of Health Services reviewed the Department of Health services’ response regarding the District‘s request for an exemption. Ms. Roy summarized the letter by stating that the District could certainly apply for an exemption but would be required to construct additional facilities and perform substantial additional testing. The approval of the exemption would take approximately 6 months from the State and EPA. Ms. Roy did point out that regardless of the additional facilities constructed and money spent on this exemption, should we fail any of the tests (i.e. tests for Giardia cysts) we would be immediately under orders to line and cover the reservoir or construct a treatment facility within an 18 month time period. As a result staff does not recommend pursuing the exemption alternative. After discussion it was decided to put off action until Commissioner Lewis can be present. This project has been put on hold for approximately 7 months in order to review and pursue other potential options. Staff is now requesting that some specific action be taken to take this project off hold. Therefore, staff is recommending the Commission agree to proceed with the design to line and cover the Maerkle Reservoir. If in fact, the Commission does not want to proceed, then staff recommends the Commission recommend, to the Board of Directors, termination of the design contract with John Powell and Associates and consider revisions to present City policy regarding 10 day storage requirements.