In a perfect world, some infrastructure could last for centuries. However, we do not operate in a perfect setting - soils move and settle, environmental factors can be harsh, and communities change and grow. Many of our clients find that they have more issues than they can afford to resolve. We have developed strategies for prioritizing upgrades to quickly reduces risk, which in turns extends asset useful life.
|
West Bay Sanitary District Linear Asset Management Plan
|
|
West Bay Sanitary District owns and operations over 200 miles of sewer pipelines in Menlo Park, Atherton, and the surrounding communities. The service area spans from deep hills and canyons to the San Francisco Bay. As a result, the District's topography is a mixture of hills and canyons, dense residential, commercial, and industrial.
Beginning in 2008, the District conducted a comprehensive system assessment and also significantly increased its cleaning and rehabilitation programs. As a component of this transformation, VWHA developed and continues to maintain two valuable planning tools: a wastewater collection system hydraulic model and Linear Asset Management Plan ("LAMP"). The LAMP began with the establishment of Level of Service objectives, followed by development of a risk model that calculates Risk based on Likelihood and Consequence of Failure. The LAMP overlays the District and County maps in GIS format, and computes and compares weighted risk factors that are generated through various proximity filters. The end result is a ranked list of pipes, sorted by risk. VWHA reviewed, mapped, and grouped projects of similar risk and proximity to form prioritized project areas that could be tackled by the District as part of its larger capital improvement program. The initial LAMP model established and prioritized the District’s rehabilitation and replacement needs, and at the same time, provided flexibility to adjust capital project priorities as long as the change did not impact the planned level of risk abatement. Since this time, the risk model has been digitally connected to the District's computerized maintenance management system. Through these tools, the District is able to review priorities real-time using the LAMP algorithms, as adjusted based on the most recent cleaning and inspection data. |
VWHA developed a risk-based prioritization model for the District that is now integrated into its maintenance database and used to help optimize system replacements.
|
