Res 2023-020 approving a first amended and restated Development Agreement with Franklin Mountain San Marcos 1, LP, in connection with the Development Case No. PDA-22-07; SMART Terminal

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water quality volume produced by a 1.25-inch rainfall is captured. The water quality volume will provide stream protection to preserve the natural character of downstream waterways. Appropriate stormwater treatment measures include: the use of de- centralized, low impact development features (e.g., rain gardens, pervious pavement, biofiltration, etc.), stormwater detention facilities and extended detention basins. The City's Stormwater Technical Manual in effect on the Effective Date of this Agreement shall govern or guide, as applicable, BMP selection and design, except for the changes to such manual (if any) that fall within the exemptions listed under Section 245.004 of the Texas Local Government Code. 2.02 Water Quality Zone Reclamation. Reclamation of water quality zones shall incorporate natural channel design techniques and address aesthetics by implementing a natural channel shape that includes varying cross section widths, depths, and side slopes and native vegetation. Trees shall be planted at the top of channel banks. Either or both the natural channel design techniques adopted and accepted by the City of Austin and the Natural Design Protocol developed by the San Antonio River Authority, or similar techniques shall be used as guidance. The design of channels shall strive to attai n natural channel function. 2.03 Impervious Cover. Impervious cover on the Property, after full development, shall not exceed 70 percent of the entire gross acreage of the Property. The total impervious cover for an individual lot within the Property shall not exceed 90 percent of the gross area of the lot. The responsibility for tracking, limiting, and administering the 70 percent limitation rests solely on the Owner and shall be demonstrated to the City at the Site Permit stage of development. Acreage counted toward 30% pervious areas to include utility corridors (including ARWA and LCRA corridors), floodplains, and detention and stormwater quality facilities. 2.04 Enhanced Drainage Requirements. On-site stormwater controls will be designed to reduce overall post-development peak rates of discharge so that they are at least 10 percent less than existing pre-development peak rates for the 2, 10, 25 and 100-year storm events at each point of discharge from the Property..Pre and post development peak rates of discharge will be calculated based upon Atlas 14 precipitation data and drainage impacts will be mitigated under applicable City ordinances in effect on the Effective Date of this Agreement, except for the changes (if any) to such ordinances, standards and specifications that fall within the exemptions listed under Section 245.004 of the Texas Local Government Code. In addition, the Owner will work in good faith with the City to convey stormwater run- off from up-gradient areas consistent with the City's Stormwater Technical Manual in effect on the Effective Date of this Agreement, except for the changes (if any) to such ordinances, standards and specifications that fall within the exemptions listed under Section 245.004 of the Texas Local Government Code.