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fabricated by ThruFlow: httn://thrullow.com/applications/decks/and by McNichols: http://www.mcnichols.com/gallery/product-photos. An alternative to these options being evaluated by the City is solid decking that incorporates glass bricks that allow light penetration to the creek channel below. • The size of the deck will be as small as possible in order to minimize impacts to the creek while effectively connecting the bandstand to the rest of the park. The currently-proposed clear-spanning deck would impact approximately 85 linear feet of the creek. • The bottom of the deck would be built several feet above the creek channel, allowing uninterrupted flows on the rare occasions when water is found in the channel. 2. Please provide some background about upstream in-channel flood control projects that were conducted in Kottinger Creek, reducing downstream.11ows through Lions Wayside Park. Is it possible to n►odif,these upstream projects to return flows to the creek segment in Lions Wayside Park? Based on historical research conducted by the City,an examination of current and historical aerial photos, and discussions with representatives of the Engineering Department, we believe that in-channel or near-channel water impoundment or diversion features were constructed in far upstream reaches of Kottinger Creek in or prior to the 1960s, before modern water quality permitting requirements were in place. The remnants of these features can be observed near the current terminuses of I Iearst Drive and Benedict Court,and all are on private property. Many appear to have been developed as part of historic ranching operations in the area. While the City would be interested in working with private landowners to restore natural features, and will continue to approach property owners to ascertain interest in doing so,the City has no immediate control over these historical channel projects. We would also note that the City has been a good steward of upstream reaches of the creek in recent years. In 2007, approximately 1,800 linear feet of Kottinger Creek approximately 0.5 mile upstream of the project site was enhanced with a new more natural channel and riparian plantings. This upstream restoration may be a factor in reduced flows downstream (as the new, more meandering channel upstream allows more water infiltration). Because it is unlikely that the natural hydrology of the segment of Kottinger Creek within Lions Wayside Park can be restored, the City is proposing on-site riparian corridor enhancement activities that rellect the unique hydrology of the site, described below. These enhancement activities would also be supplemented with off-site restoration,as necessary, to meet permitting requirements. A potential location for off- site restoration is also described below. Page 2of5