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17 <br /> method shall be used to calculate the peak runoff for <br /> the one-year, 24-hour precipitation event in cubic feet <br /> per second. The peak runoff shall then be divided by 10 <br /> and multiplied by 646,272 to convert the result to <br /> gallons per day of allowable discharge at the point <br /> studied. <br /> II. Two million gallons per day. <br /> 3. All discharges shall be directed to buffer systems that utilize <br /> low-energy methodologies to function as a buffer between the <br /> discharge and the receiving waters. Buffer systems shall <br /> consist of one of the following: <br /> I. High-rate infiltration basins that may include <br /> engineered materials to achieve high rates of <br /> infiltration, which engineered materials shall have an <br /> ASTM gradation of a fine to coarse grain sand, and <br /> angular to maintain structural integrity of the slope. <br /> II. Constructed free-surface wetlands having a hydraulic <br /> residence time of 14 days. <br /> 111. Other suitable technologies that provide a physical or <br /> hydraulic residence time buffer, or both, between the <br /> discharge and the receiving waters. <br /> 4. Discharge to areas that are 50 feet upland of the receiving <br /> waters or wetlands at a non-erosive velocity equal to or less <br /> than 2 feet per second through an appropriately designed <br /> energy dissipater, or other applicable designs, that meet the <br /> standard of practice for professional engineers for such <br /> devices. <br /> 5. Utilize more than one outfall to the receiving stream so that no <br /> one outfall exceeds 1 cubic foot per second based on the <br /> average daily flow of the discharge. Discharges from buffer <br /> systems shall be allowed to be placed at increments along a <br /> stream or receiving waters at no less than 50 linear feet. <br /> 6. No discharge shall be permitted to classified shellfish waters <br /> (SA), tidal waters (SC), water supply waters (WS), or <br /> outstanding resource waters (ORW). Discharges to unnamed <br /> tributaries of classified shellfish waters, however, shall be <br /> authorized in compliance with requirements of this section and <br /> only when a low-risk situation is present. Discharges to <br /> nutrient sensitive waters (NSW) may require additional <br /> modeling and allocation of flow and will be at the discretion of <br /> the Department. <br /> 7. The following effluent limits shall generally apply except <br /> where(i)the applicant and Department agree to more stringent <br /> limits or (ii) complex modeling conducted pursuant to <br /> sub-sub-subdivision 8. of this sub-subdivision demonstrates <br /> that Sag in the DO content of the receiving water of 0.1 mg/l <br /> or less will occur and water quality standards are protected: <br /> 1. Biological oxygen demand(BODS)shall not exceed 5.0 <br /> mg/l monthly average. <br /> 11. NH3, 0.5 mg/l monthly average, 1.0 mg/l daily <br /> maximum. <br /> Senate Bill 802 Session Law 2024-44 Page 11 <br />