§ 37-535. Same—Soil conditions information.

The applicant for any subdivision or commercial site plan proposed for development utilizing an OSDS shall submit as part of the preliminary plan submittal the following soils information prepared by a geotechnical engineer registered to practice in the State of Florida:

(1)

At least one (1) boring, a minimum of seven (7) feet deep, for each four (4) lots for residential subdivisions or for each acre proposed for development. The county may require a greater number of soil borings than specified in the preceding sentence in the event that the on-site soils associations are classified as severe by the Soil Conservation Service of the U.S. Department of Agriculture. The county may permit a fewer number of borings where large parcel development is proposed. These borings shall be located throughout the project to provide an accurate characterization of soils and water table conditions.

(2)

The following information shall be provided for each boring location:

a.

Depth, extent and description of each soil type encountered, consistent with Unified Soils Classifications System, and relative density; and

b.

Depth below natural grade of water table encountered, and determination of wet season elevation before development.

(3)

Sufficient soil samples shall be taken and tested to verify visual soil classifications.

(4)

A pre- and post-development groundwater contour map of normal wet season water table shall be provided together with an indication of direction of flow, flow from off-site and influence upon downstream areas.

(5)

A report which summarizes results of investigations, evaluation of soil and groundwater condition for both pre- and post-development conditions, and a statement pertaining to suitability to support an OSDS and special requirements for use of an OSDS, including, but not limited to the following:

a.

Lot sizing in view of soil and water table conditions;

b.

Removal and replacement of marginal low permeability soil underlying the proposed absorption bed area;

c.

Delineation of the need to elevate proposed drainfield areas;

d.

For lots other than lakefront lots, filling and grading requirements to accomplish a separation of two (2) feet, between the bottom of the absorption bed and the normal wet season water table.

e.

For lakefront lots, filling and grading requirements to accomplish a separation of two and one-half (2½) feet, between the bottom of the absorption bed to the normal wet season water table.

(6)

On a site-specific basis, additional information may be required by the county to enable a complete evaluation of conditions.

(Ord. No. 92-16, § 5, 5-26-92; Ord. No. 96-1, § 2, 1-9-96)