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water control districts' published requirements prior to issuance of a stormwater management system permit. land development permits being issued or site plan release. 11. In all subdivisions not having a centralized stormwater management system, all side lot and rear lot drainage swales shall be a minimum total of twenty (20) feet wide, ten (10) feet on each side of side lot lines the lot linc. The approval of this type of system is at the discretion of the county Public Works director and shall only be considered along the crest of the one -mile Atlantic coastal ridge or barrier island where excessive soil permeability exists. S ection 930.07, Review criteria for all4;;:;;:: lot rojects, section (1)(h)(12) is created as follows: 12. New subdivisions ldhazaareas orront, rear or side lot swales as a method for stormwater runoff treatment, except as provided for below. Swales for runoff transference (conveyance) are allowed and shall be designed to maintain a minimum elevation above the 25 -year, 24-hour storm event (one foot above 25 -year, 24-hour storm is recommended) and contain .positive flow (minimum slope of 0.3%). At the discretion of the Public Works Director, subdivisions not located in a special flood hazard area and having. lots less than 65,000 sq. ft. in size, are e ligible for a waiver from these swale prohibitions and restrictions, in part or whole, based on site and soil conditions. Waivers will be limited to sites located on the barrier island and the Atlantic coastal ridge running just west of US Highway 1. S ection 930.07, Review criteria for all development projects, sections (1)(h)(13)and (1)(h)(14), are amended to read as follows: 13.2. All new developments located in the shallow aquifer recharge areas identified in Fig 3.D.2 of the natural groundwater aquifer recht:rje sub - e lement of the county's comprehensive plan shall retain the increase in run-off volume resulting from a twenty -five-year, twenty -four-hour storm event. 14.43. All slopes greater than few -(4} six (6) horizontal to one vertical shall be sodded. Flatter slopes, depending on site-specific design, a-Pal+sation may also be required to be sodded as part of the stormwater management system permit. The Public Works director, through the county stormwater permit process, may require sodding of flatter slopes if warranted by site or design characteristics. Section 930.07, Review criteria for all development projects, sections (1)(i)(1); (1)(k); (1)(I),(1)(m)[(1) through(3)]; (1)(s).1; (1)(t); and (1) (t) (2) and (3), are amended to read as follows: 5