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BACKGROUND In 2013, the City converted the irrigation system in Val Vista Park to use recycled water, including irrigation of the sand-bed soccer fields which include an underdrain piping system. This was the City's first use of recycled water and was relatively easy to accomplish due to Val Vista Park's close proximity to the Dublin San Ramon Services District (DSRSD) treatment plant that produces the recycled water. However, as the soccer fields include an underdrain system, new operational procedures were developed as part of the conversion to recycled water. The new procedures were required because when the fields and underdrain system were constructed, the system was designed to be irrigated with potable water allowing the underdrain system to discharge to the storm drain system, and then through the storm drain outfalls into the nearby Alamo Canal. Under the State Water Board's General Order that governs the operations of recycled water systems, the recycled water used for irrigation cannot flow into the Alamo Canal. As a part of the operational procedures developed to avoid recycled water entering the Alamo Canal, City staff plugged the storm drain outfalls serving the field underdrain system during the dry season when irrigation of the fields is required. This procedure allowed the underdrain system to continue the collection of the recycled water and keep the fields in top playing condition. With the plugs in place, the recycled water is stored in the storm drain piping and must be periodically pumped into the sanitary sewer system. While this procedure has allowed the use of recycled water for soccer field irrigation for many years, it has proven to be very labor-intensive. In addition, the recycled water has caused significant corrosion of the corrugated metal storm drain piping affecting its ability to hold water and sections of the piping are now in need of repair. In 2018, a study was performed to determine alternatives other than storing and then manually pumping the recycled irrigation water from the underdrain system to the sanitary sewer system. City staff identified an alternative that consisted of making additional connections to the underdrain system and installing approximately 1,800 feet of new piping to convey the recycled water collected by the underdrain system to the sanitary sewer system for disposal. When this alternative was chosen, it was recognized that pumping would still be required due to the limited elevation difference between the underdrain system outfalls and the sanitary sewer connection point. However, the alternative offered the benefits of not needing to store water in the underdrain and outfall systems and would be automated thus saving the significant staff time involved with setting up the equipment and piping to pump the stored recycled water to the sanitary sewer. The study also identified two storm drain outfalls servicing Val Vista Park that needed repair. On July 14, 2021, City staff authorized a task authorization in the amount of $74,480 under an on-call agreement with Pakpour Consulting Group to create biddable construction documents for the preferred alternative identified in the 2018 study. During the design, it was determined that a pre-packaged pump station would increase the reliability of the system and reduce the staff time necessary to operate and maintain the modified underdrain system. Also, after cleaning and re-inspection of the park's storm drain outfalls, two additional outfalls were identified as needing repairs. On February 1 , 2022, City Council authorized a task amendment for an additional $36,915 to complete Page 2 of 4