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BACKGROUND On November 29, 2018, the City entered into a Cooperative Agreement with Caltrans for the installation of a trash capture device at the Koll Center Parkway storm drain outfall into the Arroyo Del Valle. As part of Caltrans' 1-680 ramp improvement project, Caltrans was obligated under the National Pollutant Discharge Elimination System (NPDES) General Permit (Order No. 2012-0011-DWQ; as amended: 2014-0077-DWQ) to provide trash load reductions. As constructed, the storm drains serving the Caltrans property connect directly to the City's system which flows to the Arroyo Del Valle. Since Caltrans was having a difficult time determining how to accomplish trash capture at the system connection points, they approached the City with an idea to install a larger device downstream in the City's storm drain system, achieving their legal requirements and providing value to the City. Working together, the City and Caltrans identified the mutually beneficial location to install the device at the outfall of the Koll Center Parkway storm drain system. This location would capture trash both from Caltrans' effluent (that travels through the system) and the City's effluent for the Koll Center Business Development, also helping the City meet the NPDES Municipal Reginal Permit (Order No. R2-2015-0049) requirements for trash reduction. The agreement outlined that the City would own and operate the trash capture device and that Caltrans would provide a total of$300,000 towards the installation and perpetual operation of the device. The BioClean trash capture device was installed in line with the 60-inch diameter storm drain line within the parking lot of 6900 Koll Center Parkway (see Attachment 2). The trash capture device is a prefabricated concrete structure, with baffles and screens, approximately 10 feet wide, 18 feet long, and 17 feet tall. It consists of stainless-steel- screened areas that collect floating trash, a sediment box area to collect sand and other debris that sink, and an oil and grease trap. To operate effectively, the device requires cleaning two to three times a year, depending on the system load. The device is located within an existing storm drain easement. A License and Connecter Pipe Screen Maintenance Agreement was made with the owner of the property, Common Area Tract 9755, to provide additional access for construction and maintenance of the device. A large excavation, approximately 15 feet wide, 25 feet long, and 18 feet deep, was required to set the prefabricated structure. The area was dewatered, and soil movement was monitored to ensure there was no movement at the existing buildings. The project included restoration of the parking lot and landscaping. The project was designed by CSG Consultants under the City's on-call contract with the firm. The project was competitively bid, with bids due on February 9, 2021. On March 2, 2021, Pleasanton's City Council awarded a contract for $494,600 to the low bidder, Marshall Brothers Enterprises, Inc. Council authorized the Director of Engineering to approve change orders up to the project contingency amount of$92,440. Construction began in May and was completed in October 2021. DISCUSSION One change order totaling $12,389.74 was issued during construction of the project. The change order addressed several minor changes including the relocation of water and electrical lines that conflicted with the excavation, pavement repairs, tax increases and purchase of lifting equipment for the top slab requested by the Operations Services Department. Funding for this project totaled $656,000, including $300,000 from Page 2 of 3