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Home My WebLink About2007-08-07; Municipal Water District; 637; Tri-agencies water transmission pipelineCARLSBAD MUNICIPAL WATER DISTRICT - AGENDA BILL 1 AB# 637 MTG. 8/07/07 DEPT. ENG AUTHORIZATION TO APPROPRIATE FUNDS FOR TRI-AGENCIES WATER TRANSMISSION PIPELINE CONDITION ASSESSMENT PROJECT DEPT. HEAD /fy^jK CITYATTY. (^^' I CITYMGR. ~~3gp> RECOMMENDED ACTION: Adopt Resolution No.1303 authorizing the appropriation of funds for the Tri-Agencies Water Transmission Pipeline Condition Assessment and Preliminary Design Report. ITEM EXPLANATION: The Tri-Agencies Water Transmission Pipeline was constructed in 1979 by the San Diego County Water Authority (SDCWA) to provide treated water deliveries through seven service connections to three member agencies including Carlsbad, Oceanside, and Vista Irrigation District. The pipeline is comprised of approximately 7.2 miles of pretensioned concrete cylinder pipe (CCP) of which CMWD owns and maintains 2.9 miles. Once construction was completed, the SDCWA dedicated two reaches of the transmission main to CMWD. One reach extends from the Carlsbad No. 3 Flow Control Facility to Maerkle Reservoir, which is approximately 4,300 feet. The second reach extends from the Carlsbad No. 4 Flow Control Facility to the Calavera Pump Station, which is approximately 10,700 feet. Both of CMWD's pipeline reaches described above are 21-inches in diameter and have a cement mortar coating and lining with rubber gasket joints. Pipeline appurtenances include air release and blow-off valves. In January and February 2007, both CMWD's and SDCWA's pipeline reaches experienced multiple leaks including five within the CMWD's pipeline ownership. Each of these leaks was repaired by digging up the pipeline and replacing the rubber gasket joint with a welded steel butt strap joint. In reviewing the cause of the pipe joint failure, it was determined that these joints were leaking due to corrosion for some time before the joint failed. Staff has been working closely with SDCWA because they have been experiencing the same issues on their reaches of this transmission main. The SDCWA and CMWD are currently planning to contract with the same consultant to provide leak detection and condition assessment of the transmission main. Once the current condition has been established, a preliminary design study will be performed to determine if the pipeline can be repaired by relining or replacing the joint, or if construction of a new pipeline is necessary. ENVIRONMENTAL IMPACT: This project is a Class 6 categorical exemption (information collection) and is therefore exempt from environmental review pursuant to Section 15306 of the California Environmental Quality Act (CEQA). A Notice of Exemption will be filed by the Planning Director upon project approval. FOR CITY CLERKS USE ONLY BOARD ACTION: APPROVED DENIED D CONTINUED D WITHDRAWN D AMENDED D CONTINUED TO DATE SPECIFIC D CONTINUED TO DATE UNKNOWN D RETURNED TO STAFF D OTHER - SEE MINUTES D Page 2 FISCAL IMPACT: The Engineer's Estimate for the first phase costs of the Tri-Agencies Water Transmission Pipeline Condition Assessment Project is shown in Table 1. TABLE 1 ;v- -\~ • . PROJECT >,— ^-" Tri-Agencies Water Transmission Pipeline Leak Detection, Condition Assessment Preliminary Design Report PROJECTiTQTAL COST CURRENT APPROPRIATION ADDITIONAL APPROPRIATION REQUIRED ESTIMATED COSTS $75,000 $200,000 $275,000; NONE $275,000 FUNDING SOURCE Water Replacement Funds ^-^o % * — ^flcJ!*.' >"!;"'1 The budget includes only the cost for the leak detection/condition assessment and preliminary design report at $275,000. There is no project in the current fiscal year 2007-2008 CIP Program. Staff is requesting that an appropriation from the Water Replacement fund be approved at this time to perform leak detection/condition assessment and prepare a preliminary design report. Sufficient funds are available in the Water Replacement Fund to accommodate the cost for the first phase of this project. Any recommended improvements for construction will be appropriated in the future based on the results of the condition assessment report and preliminary design report. Options Staff has considered the issue of authorizing the appropriation at this time, and provides the following options for the Council. 1. Move forward with the leak detection/condition assessment and preliminary design report and appropriate funds from the Water Replacement fund. There are sufficient funds available in the Water Replacement fund. 2. Not move forward with the leak detection/condition assessment and preliminary design report and not appropriate funds from the Water Replacement fund. Without the leak detection/condition assessment and preliminary design report, a recommendation on the appropriate repairs to the existing Tri-Agencies Water Transmission Main to correct deficiencies will not occur. Maintaining the reliability of the Tri-Agencies Water Transmission Pipeline will also be of concern. Staff is recommending adoption of Option 1. EXHIBITS: 1. Location Map. 2. Resolution No.1303 Water Transmission Pipeline Condition Assessment Project. approved and authorizing funds for the Tri-Agencies DEPARTMENT CONTACT: David Ahles, (760) 602-2748, dahle@ci.carlsbad.ca.us LOCATION MAP SITE LAKE • t^SCALAVERA I TRI AGENCIES WATER TRANSMISSION PIPELINE (SDCWA) MAERKLE RESERVOIR I CITY VISTA CARLSBAD VICINITY MAP NOT TO SCALE S/7E PROJECT NAME TRI-AGENCIES WATER TRANSMISSION PIPELINE PROJECT EXHIBIT 1 DRAWN BY: SCOTT EVANS. CARLSBAD ENGINEERING DEPT. 7/24/07 C:\CAPITAL\AHLES\m-AGENQES WATER PIPELINE.DWG 1 RESOLUTION NO. 1303 2 A RESOLUTION OF THE BOARD OF DIRECTORS OF CARLSBAD 3 MUNICIPAL WATER DISTRICT (CMWD), AUTHORIZATION TO APPROPRIATE FUNDS FOR TRI-AGENCIES WATER TRANSMISSION 4 PIPELINE CONDITION ASSESSMENT PROJECT. 5 WHEREAS, the Board of Directors has determined it necessary and in the public interest 6 to perform a condition assessment and preliminary design report, and appropriate funds for the 7 Tri-Agencies Water Transmission Pipeline; and 8 WHEREAS, funds in the Water Replacement Fund are sufficient for the project; and g WHEREAS, funds totaling $275,000 are needed at this time to begin this project. I o NOW, THEREFORE, BE IT RESOLVED by the Board of Directors of the City of Carlsbad, I1 California, as follows: 12 1 • That the above recitations are true and correct. 13 2. That the Finance Director is authorized to appropriate $275,000 from the Water 14 Replacement fund to cover the cost of a condition assessment and preliminary design report for 15 the Tri-Agencies Water Transmission Pipeline Project. 16 /// 17 /// 18 /// 19 /// 20 /// 21 /// 22 /// 23 /// 24 /// 25 /// 26 /// 27 /// 28 /// 'M 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 PASSED, APPROVED AND ADOPTED at a Special Meeting of the Board of Directors of the Carlsbad Municipal Water District of the City of Carlsbad on the 7th day of August, 2007, by the following vote: AYES: Board Members Lewis, Kulchin, Hall, Packard and Nygaard. NOES: None. ABSENT: None. , President ATTEST: O £>- RA^N| M. WO<£pYSecretary '(SEAL)