§ 63.285. Standards of Operation Prescribed for Dredging and Fill Operations.

Any dredging or land fill operation permitted under this Chapter shall conform to the following standards of operation:

Qualified Person Must Be Present. If the quantity of material to be dredged or of land fill exceeds four hundred cubic yards, the holder of a Dredge and Fill Permit shall cause a qualified person selected by him and approved by the City Engineer to remain with the dredge during all dredging operations, and no dredging shall be done unless he is present. If in the judgment of this person the dredging or filling operation is causing the lake to become muddy or unsuitable for swimming, boating or other recreational activities to the users of the lake, or if the lake water shall become cloudy or milky from material remaining in suspension as defined in this Section (below) dredging and filling operations shall cease immediately.

Maintenance of Shoreline. In operations in which the quantity of dredging material or fill exceeds four hundred cubic yards, the City Engineer shall establish a shoreline or contour line, which shall be maintained by the construction of a temporary dirt wall or dam, formed either by dredging or dragline work in a direct line between the area to be filled and the lake. The outer or lakeward edge of this wall or dam shall be a minimum of twenty-five feet from the newly established contour line or property line and of sufficient height to retain any water pumped from the lake by hydraulic pumping operations. Settling basins shall be created on the lakeward side of the wall to prevent debris or silt from draining back into the lake. No material shall be permitted on the lakeward side of the wall to prevent the effect of extending the shoreline lakeward. Final new shoreline shall be created by means other than a dredging operation.

Suction Operations. No suction operation shall be permitted within two hundred feet of the established shoreline of any lake.

Minimum Water Depth. Dredging operations shall be done in water at least six feet deep, as established from the lake's low water line, to prevent forming holes or irregularities in the lake's bottom, which may be hazardous to people wading or swimming in the lake.

Cloudy or Milky Conditions. If the lake water becomes excessively cloudy or milky from material remaining in suspension during dredging operations, the dredging operations shall cease immediately and the dredge shall be moved to a different location in the lake. A cloudy or milky condition shall be defined for the purposes of this Section as a condition equal to or exceeding that produced by adding one quarter ounce of whole milk to one gallon of tap water from the Orlando Utilities municipal water system or other water of equal clarity. If the cloudiness of the lake water persists, it is the responsibility of the applicant under this Section to use all sanitary measures, ingredients and chemicals to coagulate and clear the milky condition before the dredging operation may resume. Corrective measures shall be submitted for approval to the City Engineer and all costs shall be borne by the applicant.

Lighting. In any dredging operation the dredge shall be provided with suitable light to be mounted on the dredge, which shall be visible for at least three hundred feet in all directions. The dredge lines running from the barge to the shore shall be marked and lighted at night to eliminate hazard to swimmers, boaters or other users of the lake.

Mitigation of Nuisances. The applicant under this Part shall use extreme care to prevent the dredging and fill operation from causing adverse or undesirable effects to other property owners and users of the lake.

Other Requirements. Draglines may be cast lakeward from along the shore. In order to determine the depth of any impermeable seal, as provided herein, the applicant shall make soundings and the excavation or dredging will not be done with depth that might penetrate the impermeable seal of clay, rock or hardpan, which could cause underground drainage of the lake. The dragline shall not create a slope with a ratio of more than ten to one. The material pulled in by the dragline operations may be used to build the dirt wall or dam referred to in this Section (above).

(Ord. of 9-16-1991, Doc. #25100)