Fla. Admin. Code Ann. R. 62-6.006 - Site Evaluation Criteria
Onsite sewage treatment and disposal systems may be utilized where lot sizes are in compliance with requirements of subsection 62-6.005(7), F.A.C., and all of the following criteria are met:
(1) The effective soil depth throughout the
drainfield installation site extends 42'' inches or more below the bottom
surface of the drainfield. Paragraphs (a), (b) and (c), list soil texture
classes with their respective limitation ratings.
(a) Coarse sand not associated with an
estimated wet season high water table within 48'' inches below the absorption
surface, sand, fine sand, loamy coarse sand, coarse sandy loam, loamy sand, and
sandy loam are considered to be slightly limited soil materials.
(b) Very fine sand, loamy fine sand, loamy
very fine sand, silt loam, silt, loam, fine sandy loam, very fine sandy loam,
sandy clay loam, clay loam, silty clay loam, sandy clay and silty clay soil are
considered to be moderately limited soil materials and are subject to
evaluation with other influencing factors and local conditions.
(c) Clay, bedrock, oolitic limestone,
fractured rock, hardpan, organic soil, gravel and coarse sand, when coarse sand
is associated with an estimated wet season high water table within 48'' inches
of the absorption surface are severely limited soil materials. If severely
limited soil material can be replaced with slightly limited soil material, see
Footnotes 3 and 4 of Table III for minimum requirements. Where limestone is
found to be discontinuous along the horizontal plane and is dispersed among
slightly or moderately limited soils, the Department Policy for Drainfield
Sizing in Areas With Discontinuous Limestone, August 1999, (formerly from
Department of Health), herein incorporated by reference, shall be
used.
(2) The water table
elevation at the wettest season of the year is at least 24'' inches below the
bottom surface of the drainfield. In addition, systems shall not be located
where the undrained, naturally occurring wet season water table elevation in
the area of the proposed system installation is determined to be at or above
the elevation of the existing ground surface. However, when sufficient slightly
limited fill material is permitted to be placed on the property to construct a
properly designed onsite sewage treatment and disposal system, the Department
shall authorize construction based on the final lot elevation. This provision
does not authorize a property owner to fill or modify the site without first
obtaining necessary permits for site preparation work from other agencies of
government having jurisdiction. The following information shall be used in
determining the wet season water table elevation:
(a) U.S. Department of Agriculture Soil
Conservation Service soils maps and soil interpretation records.
(b) Evaluation of soil color and the presence
or absence of mottling.
(c)
Evaluation of impermeable or semi-permeable soil layers.
(d) Evaluation of onsite
vegetation.
(e) An onsite
evaluation of the property which has used the above referenced sources of
information and which has considered the season of the year when the evaluation
was performed, historic weather patterns, and recent rainfall
events.
(3) Setbacks in
subsections 62-6.005(1), (2), (3) and
(4), F.A.C., are met.
(4) The site of the installation and the
additional required unobstructed land referred to in subsection
62-6.005(4),
F.A.C., shall not be covered with asphalt or concrete, or be subject to
vehicular traffic or other activity as defined in subsection
62-6.002(41),
F.A.C., which would adversely affect the soil, or the operation of the
system.
(5) The site of the
installation and the additional required unobstructed land referred to in
subsection 62-6.005(4),
F.A.C., is not subject to saturation from sources such as artificial drainage
of ground surfaces, driveways, roads or roof drains.
(6) The existing lot elevation at the site of
the proposed system installation and any contiguous land referred to in
subsection 62-6.005(4),
F.A.C., shall not be subject to frequent flooding. Except for areas affected by
Section 381.0065(4)(s),
F.S., fill material, if permitted, shall be placed in the area for the system
and contiguous unobstructed area to raise the lot elevation above the 2 year
flood.
(7) All materials
incorporated herein may be obtained from the Department of Environmental
Protection, Onsite Sewage Program at www.floridadep.gov or 2600 Blair Stone Road,
MS #3596, Tallahassee, Florida 32399-2400.
Notes
Rulemaking Authority 381.0011(4), (13), 381.0065(3)(a) FS. Law Implemented 381.0065, 381.00655 FS.
New 12-22-82, Amended 2-5-85, Formerly 10D-6.47, Amended 3-17-92, 4-16-92, 1-3-95, Formerly 10D-6.047, Amended 3-22-00, 11-26-06, Formerly 64E-6.006.
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