Florida Administrative Code › 62 - DEPARTMENT OF ENVIRONMENTAL PROTECTION › 62 - Departmental › Chapter 62-625 - PRETREATMENT REQUIREMENTS FOR EXISTING AND OTHER SOURCES OF POLLUTION › Section 62-625.420 - Removal Credits

Current through Reg. 50, No. 138; July 16, 2024
(1) Introduction. Rule
				 62-625.420, F.A.C., does not
				apply where the Department is acting as the control authority.
(a) Any public utility receiving wastewater
				from a categorical industrial user may, at the control authority's discretion
				and subject to the conditions of this section, grant removal credits to reflect
				removal by the WWF of pollutants specified in the categorical pretreatment
				standard. The control authority may grant a removal credit equal to or, at its
				discretion, less than its consistent removal rate. Upon being granted a removal
				credit, each affected industrial user shall calculate its revised discharge
				limits in accordance with paragraph (c), below. Removal credits shall only be
				given for indicator or surrogate pollutants regulated in a categorical
				pretreatment standard if the categorical pretreatment standard so
				specifies.
(b) Conditions for
				authorization to give removal credits. A control authority is authorized to
				give removal credits only if all of the following conditions are met:
1. The control authority requests, and
				receives authorization from the Department to give, a removal credit in
				accordance with the requirements and procedures specified in subsection (4),
				below.
2. Consistent removal
				determination. The WWF demonstrates and continues to achieve consistent removal
				of the pollutant in accordance with subsection (2), below.
3. Pretreatment program. The public utility
				has a pretreatment program approved by the Department in accordance with Rule
				 62-625.510, F.A.C.
4. Biosolids requirements. The granting of
				removal credits will not cause the WWF to violate the local, State, and Federal
				requirements which apply to the biosolids management method chosen by the WWF.
				Alternatively, the WWF can demonstrate to the Department that (even though it
				is not presently in compliance with applicable domestic wastewater residual
				requirements) it will be in compliance when the industrial user (to whom the
				removal credit would apply) is required to meet its categorical pretreatment
				standard, as modified by the removal credit. Removal credits may be made
				available for the following:
a. Any pollutant
				listed in subsections
				 62-625.880(2) and
				(3), F.A.C., for the use or disposal practice
				employed by the WWF, when the requirements in Chapter 62-640, F.A.C., for that
				practice are met;
b. Arsenic,
				Beryllium, Cadmium, Chromium, Lead, Mercury and Nickel, when incinerated, when
				the concentration for these pollutants does not exceed the requirements of  40
				C.F.R. Part 503.43, ("Incineration: Pollutant Limits" codified as of July 1,
				2020, which is hereby adopted and incorporated by reference
http://www.flrules.org/Gateway/reference.asp?No=Ref-13511
).
				A copy of this document may be obtained by contacting the Wastewater Management
				Program, M.S. 3545, 2600 Blair Stone Road, Tallahassee, Florida
				32399-2400;
c. Any pollutant listed
				in subsection  62-625.880(4),
				F.A.C., for the use or disposal practice employed by the WWF, when the
				concentration for the pollutant listed in subsection
				 62-625.880(4),
				F.A.C., does not exceed the specified concentration; or
d. For any pollutant in biosolids, when the
				WWF disposes all of its biosolids in a municipal solid waste landfill that
				meets the criteria in Chapter 62-701, F.A.C.
5. Permit limitations. The granting of
				removal credits shall not cause a violation of the WWF's permit limitations or
				conditions. Alternatively, the WWF can demonstrate to the Department that (even
				though it is not presently in compliance with applicable limitations and
				conditions in its permit) it will be in compliance when the industrial user (to
				whom the removal credit would apply) is required to meet its categorical
				pretreatment standard, as modified by the removal credit.
(c) Calculation of revised discharge limits.
				Revised discharge limits for a specific pollutant shall be derived by use of
				the following formula:
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				  image
where
y
=
Revised discharge limit for the specified pollutant
							 (expressed in same units as x).
x
=
Pollutant discharge limit specified in the applicable
							 categorical pretreatment standard.
r
=
Removal credit for that pollutant as established
							 under subsection (2), below (percentage removal expressed as a proportion,
							 i.e., a number between 0 and 1).