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THE CITY OF n LEASANTON CITY COUNCIL AGENDA REPORT March 19, 2019 Engineering TITLE: ALLOCATE $220,000 FROM FUND 518 TO THE RECYCLED WATER INFRASTRUCTURE EXPANSION PHASE 1A — KEN MERCER SPORTS PARK BOOSTER STATION PROJECT, CIP NO. 14126, AND AUTHORIZE THE DIRECTOR OF ENGINEERING TO APPROVE AND EXECUTE CHANGE ORDERS TO THE CONTRACT WITH GSE CONSTRUCTION COMPANY, INC. IN THE NOT TO EXCEED AMOUNT OF $220,000 TO INSTALL SEVEN DEBRIS STRAINERS IN THE RECYCLED WATER PARK IRRIGATION SYSTEM PIPING SUMMARY The City's recycled water distribution system at the Ken Mercer Sports Park is experiencing an issue with debris clogging the individual filters housed within the irrigation spray heads. In order to clean the irrigation heads and remove the debris, the heads must be excavated and disassembled. There are 1,812 irrigation heads subject to this debris blockage within the Sports Park and the Tennis and Community Park. Review of recycled water customers in Hacienda Business Park revealed they are not experiencing similar issues, however, every one of the private customer irrigation systems includes at least one in-line Wye-Strainer filter. Staff designed a project to install similar Wye-Strainer filters at all seven water meter locations serving the Sports Park and the Tennis and Community Park. Staff then asked GSE Construction Company, Inc. (GSE), as the current contractor on the recycled water booster station installation at the Sports Park, for a cost proposal to install the seven Wye-Strainer filters in accordance with the plans and specifications. GSE proposed a total cost of $203,800 to complete the project. Staff has reviewed this cost and believes it fair and reasonable. Staff recommends that City Council allocate $220,000 from Fund 518 for the work, and authorize the Director of Engineering to process change orders up to $220,000 to complete the work. The recommended amount includes the GSE-proposed cost of $203,800, and $16,200 in contingency to cover any unforeseen conditions discovered while completing the project. RECOMMENDATION 1. Allocate $220,000 from Fund 518 to the Recycled Water Infrastructure Expansion Phase 1A — Ken Mercer Sports Park Booster Station Project, CIP No. 14126. 2. Authorize the Director of Engineering to approve and execute change orders to the contract with GSE Construction Company, Inc. in the not-to-exceed amount of $220,000 to install seven debris Wye-Strainers in the recycled water park irrigation system piping.