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foot, and lowering the bottom by 20 feet. This project from start to finish can be seen in the progressive photos below. The time has come to rehabilitate the City's reservoirs with 21st century design standards and to comply with today's structural design codes that continue to evolve, typically after the most recent devastating earthquake (Northridge, 1994). How this project turns out will depend on how we make the key decisions together. Resolving these issues in a timely and cost-effective way is the "BRADY sweet spot". We always search for the easiest solutions to a problem and follow the path of least resistance. Where Reservoir Projects Go Wrong? — the BRADY Focus 1. Any potential environmental issues are not resolved in advance. Keeping promises is critical. 2. Hydraulics. Reservoirs and associated pump stations are actually attempts to solve a hydraulic problem — how to deliver water in the desired quantity and pressure, all of the time. 3. Overflow events. The amount of water released in an overflow can be significant, and substantial downstream damage can occur to private properties unless this hydraulic issue is thoroughly understood. 4. Confined spaces/safety. As noted previously, it is always important to consider the safety of Operations and Maintenance (O&M) staff during the design. It is our desire to minimize confined spaces at all times, but when unavoidable, to provide superior means of ingress and egress such as internal and external stairs to provide the best design for those tasked with O&M of a facility. The existing reservoirs are actually very large confined spaces, any improvements we can make to improve access and safety is worth the exercise. 5. A study of "unintended consequences" should be a part of the early planning process. Taking facilities even partially out of service that currently perform an essential daily water supply function is never as easy as it sounds. We know from our long history working on very similar projects, it is imperative to "keep the water flowing". We know that every activity requires the development of a detailed sequence of events to show how the work will be performed in the most expeditious method possible, with the most important component — the contingency plan — in the event assumptions do not turn out as planned. 6. We strongly believe that the City's existing reservoirs are ideal candidates for complete rehabilitation, at a cost considerably less than constructing a new tank. BRADY has completed many "tank within a tank" projects, most notably the 21.5 MG Overmyer Reservoir for the City of Huntington Beach. The reservoir roof was removed, columns were reinforced, a new wall and floor were placed on the inside of the existing reservoir to act as "form work". We replaced the roof and returned 21.5 MG to service at a cost of $6.6M, which was a staggering savings to the City. Most recently, in a design/build sole source contract for Vista Irrigation District, we rehabilitated a 5.0 MG reservoir that was built in 1961. We completed the project at Y2 the cost of a new tank, in Y2 of the time. Photos of other "before" and "after" photos are shown on the following page. 0 RICHARD BRADY &ASSOCIATES, INC. 9 25B-87