PC 2000-48 - Laserfiche WebLink

b) Property Owner shall pay all legally imposed' DSRSD and Pleasanton Wastewater Connection fees in effect at the time of issuance of a building permit for any uses utilizing the City's sewage system. J. Storm Drainage, Flood Control, and Water Quality 57) Stormwater System. Property Owner shall be responsible for constructing on-site storm drainage system improvements as shown on Exhibits 11-14; Preliminary Grading and Utility Plan, to capture, detain, and convey stormWater flows off-site. Completion of such improvements shall satisfy the Project's storm drainage system improvement obligations except for such drainage improvement necessary to serve in-tract drainage needs. Such improvements shall be constructed in a manner generally consistent with the Specific Plan. All improvements shall be subject to review and approval of the City Engineer. Proposed improvements shall provide storm water runoff modeling, demonstrating that improvements installed will be sufficient for conveying upstream flows. b) Storm drainage system improvements shall be designed to convey storm flows corresponding to the 15-year storm event without overflow into adjacent land uses. City standard design criteria shall be used for all pipes, culverts or channels. c) Storm drainage system improvements (channels, culverts, sU~ets, open spaces, detention/retention basins, and site grading) shall be designed in a comprehensive manner such that no habitable buildings are subject to flooding during a FEMA 100-year storm event. Subject to obtaining all necessary permits and approvals from jurisdictional agencies, certain existing B-Line channels may be placed within a culvert or relocated, as shown in Exhibit 4. Phase I improvements will only address those channels impacted by the Phase I development. These channels anticipated to be placed within culverts or relocated include: i) Line B-2-1 and B-2-2, as necessary to re-mute drainage around the proposed UPRR underpass, ii) Line B-2-3, from the Alameda County Transportation Corridor to Line B- 2-1 along the UPRR railroad right-of-way, iii) Line B-2-1, from the Alameda County Transportation Corridor to its connection with Line B-2-3, to be relocated to carry flows southward along the Alameda County Transportation Corridor right-of-way within an open channel to the toe of the knoll, and then placed within a culvert under Conditions of Approval Page 29 of 44 August 9, 2000