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/LA COM AECOM 916.414.5800 tel 2020 L Street,Suite 400 916.414.5850 fax Sacramento,CA 95811 www aecom corn August 16, 2017 Mr. Brian Wines San Francisco Bay Region Water Quality Control Board 1515 Clay Street, Suite 1400 Oakland, CA 94612 Re: City of Pleasanton Lions Wayside Park and Delucchi Park Master Plan Project, USACE File Number 2013-283, CIWQS Place Identification 818840, Lake or Streambed Alteration Notification Number 1600-2015-0373-R3 Dear Mr. Wines, On April 6, 2016 the City of Pleasanton (City) and AECOM held a multi-agency meeting for the Lions Wayside Park and Delucchi Park (Parks) Project. In attendance were Janelle Lesson, U.S. Army Corps of Engineers; Brian Wines, San Francisco Bay Area Regional Water Quality Control Board; Marcia Grefsrud, California Department of Fish and Wildlife; Brian Dolan, Assistant City Manager; Adam Weinstein, City Planning Manager; Steve Kirkpatrick, City Engineer; Kevin Melanephy; AECOM Permitting Specialist; and Kristin Asmus, AECOM Project Manager. The objective of the meeting was to discuss the Joint Aquatic Resources Permit Application package for the project and feasible mitigation for the proposed project impacts to 533 linear feet of Kottinger Creek. In response to agency feedback received at the meeting, the City has substantially revised the parks conceptual design to reduce impacts to Kottinger Creek and enhance segments of the channelized stream while still meeting the City's objectives of enhancing the appearance and use of the parks, upgrading an important downtown recreational amenity, and improving park safety. Enclosed is a copy of both the old and new conceptual design for the parks. Compared to the previously-submitted design, the new design reduces impacts to Kottinger Creek by approximately 500 linear feet and eliminates more than 2,900 cubic yards of fill in the creek. The originally proposed 533 linear-foot culvert in Kottinger Creek will be replaced with a clear-spanning deck covering 85 linear feet, which is necessary to unite the bandstand with the rest of the park. The improvements and extension of the existing culvert on the north side of Neal Street will still impact approximately 35 linear feet of Kottinger Creek and require approximately 230 cubic yards of fill. The new design will reduce the number of trees that will need to be removed from an estimated 19 to an estimated eight. It will also allow for enhancement activities along the approximately 400 feet of Kottinger Creek that will remain as open channel. As you know, the existing channel is located in a highly urbanized environment, and the associated riparian habitat has been degraded over the years. We are confident that proposed enhancement activities will offer a real ecological benefit that will also create educational opportunities for the public at this frequently-visited community park. On behalf of the City, AECOM requests your review and consideration of this new design. The City is seeking a preliminary design approval prior to undertaking a more comprehensive revision of the permit application package. If you feel there is not enough information provided here for your evaluation, please contact me with any questions you may have. We would also be happy to set up a meeting to discuss the design in further detail.We respectfully request a response via email or mail within 30 days of receipt of this letter and attached conceptual design, as the City is eager to move forward with this important community project that was approved in October 2014. We appreciate