Task A: Review Existing Data - Review existing transmission main as-built drawings, previous condition assessment reports and studies, including available data concerning the 2024 break, and conduct interviews with key maintenance staff. Task B: Research and Recommend Testing Methods - Research current available external and internal testing methods and technologies to assess the health of the pipe. Recommend preliminary testing/inspection/investigation approach that would best assess the District’s water main. Analyze the pros and cons of each testing method, evaluating each recommended method for cost, accuracy, and feasibility. Considerations should be made to minimize service interruptions and avoid causing any damage to the existing pipe. Prepare a Technical Memorandum with final recommendations for the most appropriate tests. Include a suggested implementation plan for the recommended tests/surveys, including a timeline, cost, and possible funding opportunities. Deliverables: Technical memorandum (PDF/Word) – Outlining the recommended tests and implementation plan. PHASE II Task C: Pipeline Testing/Investigation - Perform recommended tests/investigations/surveys on, District-approved sections of pipe, including areas around the 2024 water main break. Deliverables: Testing plan/schedule (PDF/Word)...
