Definitions, Pretreatment Standards: Prohibited Discharges, Removal Credits, Modification of Pretreatment Programs, Reporting Requirements for Control Authorities and Industrial Users

DEPARTMENT OF ENVIRONMENTAL PROTECTION

RULE NO: RULE TITLE
62-625.200: Definitions
62-625.400: Pretreatment Standards: Prohibited Discharges
62-625.420: Removal Credits
62-625.540: Modification of Pretreatment Programs
62-625.600: Reporting Requirements for Control Authorities and Industrial Users

NOTICE OF CHANGE

Notice is hereby given that the following changes have been made to the proposed rule in accordance with subparagraph 120.54(3)(d)1., F.S., published in Vol. 35 No. 50, December 18, 2009 issue of the Florida Administrative Weekly.

62-625.200 Definitions.

Terms used in this chapter shall have the meaning specified below. The meaning of any term not defined below shall be taken from definitions in other rules of the Department, unless the context clearly indicates otherwise.

(1) through (24) No change.

(25) “Significant Industrial User” means, except as provided in paragraphs (c) and (d) below, the following:

(a) through (b) No change.

(c) The control authority (except where the Department is acting as the control authority) may determine that an industrial user subject to categorical pretreatment standards under Rule 62-625.410, F.A.C., including 40 CFR Chapter I, Subchapter N, Parts 405 through 471, is a non-significant categorical industrial user.

(d) No change.

62-625.400 Pretreatment Standards: Prohibited Discharges.

(1) through (2) No change.

(3) Specific limits developed by the control authority.

(a) through (c) No change.

(d) The control authority (except where the Department is acting as the control authority) may develop best management practices (BMPs) to implement paragraphs (a) and (b) above. Such BMPs shall be considered local limits and pretreatment standards for the purposes of this chapter.

(4) through (5) No change.

62-625.420 Removal Credits.

(1) Introduction. Rule 62-625.420, F.A.C., does not apply where the Department is acting as the control authority.

(a) No change.

(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. through 2. No change.

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. Domestic wastewater residuals (referred to as “sewage sludge” in the federal regulations which is defined at 40 CFR 503.9) requirements. The granting of removal credits will not cause the WWF to violate the local, State, and Federal requirements which apply to the domestic wastewater residuals 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. through d. No change.

5. No change.

(c) No change.

(2) Establishment of removal credits; demonstration of consistent removal. Influent and effluent operational data demonstrating consistent removal, or other information as provided for in paragraph (g) below which demonstrates consistent removal of the pollutants for which discharge limit revisions are proposed, shall be provided to the Department. These data shall meet the following requirements:

(a) through (f) No change.

(g) All sample data obtained for the measured pollutant during the time period prescribed in this section, must be reported to the Department and used in computing consistent removal. If a substance is detectable in the influent but not in the effluent, the effluent level shall be assumed to be the method detection limit, and those data may be used by the WWF at its discretion if the method detection limit meets the requirements of Rule 62-4.246, F.A.C. If the substance is not detectable in the influent, the data shall not be used to calculate consistent removal. Where the number of samples with concentrations equal to or above the method detection limit is between 8 and 12, the average of the lowest 6 removals shall be used. If there are less than 8 samples with concentration equal to or above the method detection limit, the Department shall require alternate means for demonstrating consistent removal.

(3) through (5) No change.

62-625.540 Modification of Pretreatment Programs.

(1) General. Pretreatment programs shall be modified in accordance with this rule Either the Department or a control authority may initiate program modification at any time to reflect changing conditions at the WWF. Program modification is necessary whenever there is a significant change in the operation of a pretreatment program that differs from the information in the control authority’s submission to the Department, as approved under Rule 62-625.510, F.A.C.

(2) through (3) No change.

62-625.600 Reporting Requirements for Control Authorities and Industrial Users.

(1) through (15) No change.

(16) All control authorities shall periodically provide to the Department a written technical evaluation regarding the need to revise local limits. At a minimum, the evaluation shall be provided within 180 days following permit issuance or reissuance. The evaluation shall verify whether existing local limits protect the WWF, and if not, shall develop new local limits as part of the evaluation. For new local limits, a plan of study shall be submitted to the Department prior to initiating sampling required to develop the new local limit.

(17) No change.