§ 30.16. Groundwater Remediation and Miscellaneous Discharges.

1.

Groundwater Remediation Discharges.

(a)

Purpose. The purpose of this section is to provide for the discharge of treated groundwater from remediation sites by users of the collection system without causing pass through, upset or interference at the WRF's.

(b)

General Criteria.

(i)

The discharge by a user to the POTW of certain liquids or wastes may be prohibited or limited by the provisions set forth in this Chapter or by decision of the Director of Public Works.

(ii)

A groundwater remediation facility that discharges to the City's collection system shall be classified as a significant industrial user.

(iii)

Groundwater from remediation sites shall be pretreated prior to discharge to the POTW.

(iv)

An industrial user discharge permit application shall be submitted to the Director of Public Works by the user before issuance of an industrial user discharge permit. The Director of Public Works may require complete characterization of the groundwater prior to issuing an industrial user discharge permit. The permit application shall be completed pursuant to the requirements in Section 30.05.

(v)

The Director of Public Works may impose limitations and monitoring requirements for the treated discharge to the POTW in accordance with the provisions of this Chapter and standards set forth in Chapter 62-550, F.A.C.

(vi)

The user shall not discharge untreated or treated groundwater to the POTW without written approval of the Director of Public Works or obtaining an industrial user discharge permit.

(vii)

A flow-monitoring device shall be installed on the discharge line in accordance with the plans approved by the Director of Public Works and the manufacturer's recommendations. The flow monitoring shall be provided, installed, calibrated and maintained at the user's expense. The flow measuring devices shall be calibrated quarterly.

(viii)

The user shall provide a monitoring point at their sole expense for the collection of samples and field data.

(ix)

Groundwater treatment systems shall be designed and operated in accordance with the best available technology and as approved by the Director of Public Works.

(x)

Pursuant to the provisions of the industrial user discharge permit, the Director of Public Works shall require the discharge to the collection system to be monitored on a regular basis for the determination of compliance with the limits set forth in this Chapter.

(c)

Discharge Limits. Discharges from groundwater remediation facilities to the POTW shall comply with the standards for organic compounds as set forth in 40 CFR 414.101, 40 CFR 414.111 or the standards established by FDEP for low yield/poor quality groundwater or natural attenuation of default sources concentrations as set forth in Chapter 62-777, F.A.C.

2.

Medical Wastes.

(a)

Hospitals, clinics, medical/dental practitioner offices, convalescent and nursing homes, medical/dental laboratories and funeral homes shall dispose of medical wastes, pathological wastes, laboratory wastes, contaminated medical wastes and wastes from expired humans (corpses) in accordance with the latest edition of guidelines that are published by EPA, the Centers for Disease Control (CDC), the Public Health Department or other appropriate Federal and State agencies.

(b)

Toxic, biological or contaminated wastes which are not addressed by the aforementioned guidelines shall not be discharged to the City's wastewater collection system without written permission from the Director of Public Works.

(c)

Hospitals, clinics, medical/dental practitioner offices, convalescent and nursing homes, medical/dental laboratories and funeral homes shall prepare and maintain a Biomedical Waste Plan in accordance with the requirements set forth in Chapter 64E-16, F.A.C. The Biomedical Waste Plan shall be available for review by the Director of Public Works.

(d)

The Biomedical Waste Plan and other pertinent records shall be retained and preserved at the facility in accordance with Section 30.07(12) of this Chapter. Records shall be available for review by the Director of Public Works.

(e)

Enforcement action shall proceed in accordance with the provisions set forth in this Chapter.

3.

Miscellaneous Discharges.

(a)

Purpose. The purpose of this section is to provide for other types of discharges to the POTW, including, but not limited to, uncontaminated groundwater, cooling water, unpolluted process water, miscellaneous pumpage and leachate or runoff from solid waste handling facilities.

(b)

General Criteria.

(i)

The user shall provide written notification to the Director of Public Works and explain the necessity for this miscellaneous discharge and receive written authorization prior to commencement of discharge.

(ii)

The user may be required to submit an Industrial User Discharge Permit application to the Director of Public Works.

(iii)

The Director of Public Works may impose restrictions, prohibitions or other provisions on the discharge in accordance with this Chapter.

(iv)

The Director of Public Works may limit the volume and duration of the discharge to the POTW. The user shall be responsible for measurement of the flows to the POTW. The flow monitoring device shall be provided, installed and maintained in accordance with the guidelines set forth by the Director of Public Works and at the sole expense of the user.

4.

Reduction Credit.

(a)

A reduction credit may be granted to nonresidential users of the POTW for abnormally low strength compatible wastes. Abnormally low strength compatible wastes shall be defined as those wastes with a CBOD ₅ and TSS concentration less than fifty (50) mg/l. The user may request the Director of Public Works, at the sole expense of the user, to evaluate their discharge for classification as abnormally low strength compatible wastes.

(b)

The reduction credit in dollars shall be derived annually using the following formula and shall be set forth in the schedule of fees:

Reduction Factor =	Cost of Treatment ($) per million gallons
	200 (mg/l)

 

Where:

Cost of treatment is the total operational costs, including prorated administrative costs, for the POTW during the preceding fiscal year divided by the total flow for the WRFs in millions of gallons

The number 200 is the minimum normal CBOD and suspended solids (TSS) concentrations expressed in milligrams per liter (mg/l) as defined for abnormally low strength compatible wastes in Section 30.01 (4).

Reduction factor is expressed in dollars per milligram per liter (mg/l).

(c)

The reduction credit shall be calculated as the product of the reduction factor times the concentration, in milligrams per liter (mg/l), of each constituent as defined for abnormally low strength compatible wastes times the total flow in millions of gallons during the billing cycle.

(d)

The reduction credit will be granted for each billing period. The reduction credit will appear on the monthly utility statement for the user.

5.

Sand, Grit and Debris Interceptors.

(a)

Purpose. The purpose of this section is to minimize the introduction of sand and grit into the collection system.

(b)

General Criteria.

(i)

Wastes containing excessive amounts of sand and grit shall be directed to an interceptor for removal. Wastes containing excessive amounts of floatables or other debris that could cause clogs in the collection system, such as, but not limited to, rags, strings, feathers, entrails, glass or other objects larger than one (1) inch in size, shall direct the flow to an interceptor with a screening device that would prevent passage of these said solids into the collection system.

(ii)

Sand and grit interceptors and screening devices shall be provided at the user's expense. The interceptor shall be installed, operated and maintained in accordance with the plans approved by the Director of Public Works and the manufacturer's recommendations.

(iii)

Sand and grit interceptors and screening devices shall be designed and installed to accommodate the anticipated range of flows.

(iv)

Sand and grit interceptors and screening devices shall be installed for easy access for cleaning and inspection. Sand and grit interceptors and screening devices shall be serviced and emptied of their contents on a regularly scheduled basis to maintain efficient operation at all times. Operation and maintenance of the sand and grit and screening devices interceptor shall be performed at the user's expense.

(v)

Wastes removed from the sand and grit interceptors and screening devices shall not be discharged into the POTW. The user shall maintain a log of cleaning activities and a file on site of the records and documents related to the sand and grit interceptor. Record/documents retained in the file should include as-built drawings, manufacturer's instructions, log of cleaning activities, hauler information and receipts, site inspection reports and monitoring data.

(vi)

Failure to comply with the provisions set forth herein can result in implementation of enforcement procedures set forth in this Chapter.

(Ord. of 6-12-2000, § 2, Doc. #33005)