Exhibit 11-6-1-3-A to Chapter 1, Subchapter 3 - CRITERIA FOR THE SITING AND DESIGN OF EXCAVATED CANALSI. Criteria for Canal Design and Siting(a) Canals shall not be constructed or excavated in wetlands, creeks or natural drainage ways.(b) Canals should all have two or more connections to the parent body of water to allow greater flow through the system.(c) Canals shall not be box cut. Slopes of canal banks shall be one vertical to three horizontal or flatter to promote colonization by littoral vegetation, which provides nutrient uptake, habitat and bank stabilization. Any bulkheading shall be done above ordinary high water.(d) Canals shall be no deeper than -4 to -5 feet normal water level due to problems with incomplete mixing, poor reaeration, stratification, and depressed dissolved oxygen associated with excessive depths.(e) Excavation resulting in ridges or depressions within the canal shall be avoided due to limitations on water exchange.(f) Where feasible, canal projects shall be located on the run of a river rather than in a pool and backwater segment.(g) Canals shall be designed to maximize wind-induced mixing and other natural forms of reaeration. For example, the longest dimension of the canal should be oriented with prevailing winds. Complex geometric designs shall be avoided and keyhole boat slips shall not be placed off of the canal. The minimum bottom width of a canal shall be 100 feet in order to allow for reaeration.(h) Where feasible, designs shall have an enlarged surface area (a pool or embayment) which is shallower than the canal at the landward terminus. This design results in better water quality due to the enhanced effects of wind reaeration in the pool and in creased flow because of the storage area in the pool.II. Wastewater Treatment A central sewage collection and treatment system is the preferred method of wastewater treatment. Individual home disposal systems shall only be considered after a determination is made that other treatment methods are not economically feasible and State Department of Health approval shall then be required. Wastewater treatment approval from either the Department or the State Department of Health must be obtained prior to the issuance of a § 401 Certification.
The minimum requirements for wastewater treatment approvals shall include, but are not limited to, the following:
(a) no effluent, treated or untreated, shall be discharged directly into the canal,(b) depending on the soil type, a minimum of 150 feet from a septic tank absorption field to any water body shall be required,(c) the bottom of a septic tank absorption field shall be at least five feet above the impervious layer or groundwater, and(d) the bottom of a septic tank absorption field shall be above the 10-year flood plain.III. Storm Water Management Storm water runoff from any project site shall be directed away from the canals to prevent discharge of water-borne contaminants, bacteria, nutrients, oils, greases, sediments, etc.
Miss. Code. tit. 11, pt. 6, ch. 1, subch. 3, exh. 11-6-1-3-A to Chapter 1, Subchapter 3
Miss. Code Ann. §§ 49-2-1, et seq. and 49-17-1, et seq.