Florida Administrative Code › 62 - DEPARTMENT OF ENVIRONMENTAL PROTECTION › 62 - Departmental › Chapter 62-6 - STANDARDS FOR ONSITE SEWAGE TREATMENT AND DISPOSAL SYSTEMS › Part II - Florida Keys › Section 62-6.0181 - System Repair and Cesspit and Undocumented System Replacement

Current through Reg. 50, No. 138; July 16, 2024
(1) Where a property is determined to have a
				  cesspit or an undocumented system, the cesspit or undocumented system shall be
				  required to be replaced with an onsite sewage treatment and disposal system
				  complying with Rule  62-6.018, F.A.C.
(2) In areas that are scheduled to be served
				  by a central sewer by December 31, 2015, where there is documentation from the
				  sewer utility that the property is scheduled to be served by December 31, 2015,
				  and there is documentation from the sewer utility or from the county tax
				  collector's office that the property owner has paid or has signed an agreement
				  to pay for connection to the central sewer system, an onsite sewage treatment
				  and disposal system requiring repair shall be repaired to the standards in
				  subsection  62-6.0181(3),
				  F.A.C.
(3) Systems shall be
				  repaired to the following standards provided no system shall be repaired to
				  meet a lower standard of treatment than the treatment standard permitted or
				  required to be met prior to the repair.
(a) A
				  Class I aerobic treatment unit which meets the location, construction,
				  maintenance and operational requirements of subparagraph
				   62-6.0181(3)(a) 
				  1. or 2., F.A.C., and the certification, construction, operational and
				  maintenance requirements of Rule
				   62-6.012, F.A.C.
1. Where a Class I aerobic treatment unit is
				  utilized, and where final effluent disposal is into a sand lined drainfield
				  system, the following general requirements shall apply:
a. For a sand-lined drainfield, a minimum
				  12'' inch thick layer of quartz sand shall be placed beneath the bottom of the
				  drainfield absorption surface and a minimum 12'' inch wide and minimum 24''
				  inch thick layer of quartz sand shall be placed contiguous to the drainfield
				  sidewall absorption surfaces in order to provide an additional level of
				  effluent treatment prior to effluent passing into the surrounding natural
				  limestone rock. Sand material shall have either an effective grain size in the
				  range of 0.25 millimeter to 1.00 millimeter and shall have a uniformity
				  coefficient of less than 3.5, or the material shall be of such size whereby at
				  least 90 percent of the sand particles pass a U.S. Standard Number 18 sieve and
				  less than 10 percent pass a number 60 sieve. These materials are in the USDA
				  soil texture classes known as medium sand and coarse sand. The Department shall
				  require the installer of a sand-lined drainfield system to provide
				  certification from the installer's sand supplier that the sand supplied for
				  such type of installation meets the requirements of this subsection.
b. No part of the system shall be within 25'
				  feet of the mean high water line of tidal surface water bodies or within 25'
				  feet of the ordinary high water line of lakes, ponds or other non-tidal surface
				  waters or salt marsh and Buttonwood Association habitat areas where the
				  dominant vegetation species are those typical of salt marsh
				  communities.
c. The bottom surface
				  of the sand layer shall be at least 12'' inches above mean high
				  water.
d. The maximum sewage
				  loading rate to an aerobic treatment unit absorption bed drainfield with
				  underlying sand liner shall be 1.1 gallons per square foot per day.
e. Appropriate shallow root vegetative cover
				  shall be established over drainfield systems to maximize the beneficial effects
				  of evapotranspiration.