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No person shall discharge or cause to be discharged any pollutant which causes pass through, interference, or the below described materials, waters, or wastes (collectively, the substances) if it appears likely that acceptance of those wastes can harm the wastewater treatment process or equipment, the public sewers, the sanitary sewer systems, or have an adverse effect on the receiving water body, or can otherwise endanger life, limb, public property, or constitute a nuisance. The decision shall be based on those factors as the quantities subject wastes in relation to flows and velocities in the sewers, materials of construction of the sewers, nature of the wastewater treatment process, capacity of the wastewater treatment plant, degree of treatability of waste in the wastewater treatment plant, and other pertinent factors. The substances restricted are:
(a) Flammable or explosive liquids, solids, or gases, including, but not limited to, gasoline, benzene, naptha, fuel oil, or other materials with a closed-cup flashpoint of less than 140° F. (60° C.) using the test methods specified in 40 CFR 261.21.
(b) Pollutants having a pH of less than 5.5, or greater than 9.5, or otherwise causing corrosive damage to the WWF or its equipment or personnel.
(c) Pollutants, including oxygen-demanding pollutants (BOD, etc.) released at a flow rate and/or concentration which, either singly or by interaction with other pollutants, will cause interference with the WWF.
(d) Any liquid having a temperature higher than 150° F. or causing the wastewater treatment plant influent to exceed 104° F.
(e) Any water or waste containing petroleum oils, mineral oils, or non-biodegradable cutting oils in amounts that will cause interference or pass through, or any fats, wax, grease, or other oils, whether emulsified or not, in excess of 100 milligrams per liter or containing substances which may solidify or become viscous at temperatures between 32° F. and 150° F. (0° C. and 60° C).
(f) Pollutants which result in the presence of toxic gases, vapors, or fumes within the WWF in quantities that may cause acute worker health or safety problems.
(g) Any trucked or hauled wastes, except at discharge points designated by the Director. Industrial waste haulers may discharge loads only at locations designated by the Director. No load may be discharged without prior consent of the Director. The Director may collect samples of each hauled load to ensure compliance with applicable standards. The Director may require the industrial waste hauler to provide a waste analysis of any load prior to discharge.
(h) Any water or wastes containing toxic or poisonous or pathogenic solids, liquids, or gases in sufficient quantity, either singly or by interaction with other wastes, to injure or interfere with any wastewater treatment process, constitute a hazard to humans or animals, create a public nuisance or an acute health or safety hazard, interfere with the ability to repair or maintain the WWF, or create any hazard in the receiving waters of the wastewater treatment plant.
(i) Solid or viscous substances in quantities or of a size capable of causing obstruction to the flow in sewers, or other interference with the proper operation of the sewage works such as, but not limited to, ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, unground garbage, whole blood, paunch manure, hair and fleshings, entrails, paper dishes, cups, milk containers, and the like, either whole or ground by garbage grinders. Penalties, see Sec. 26-177
(j) Wastes which impart color which cannot be removed by the treatment process, such as, but not limited to, dye wastes and vegetable tanning solutions, which consistently impart color to the treatment plant's effluent.
(k) Wastewater containing any radioactive wastes or isotopes except in compliance with applicable State or Federal regulations.
(l) Sludges, screenings, or other residues from the pretreatment of industrial wastes.
(m) Medical wastes, except as specifically authorized by the Director.
(n) Wastes causing, either alone or in conjunction with other sources, the treatment plant's effluent to fail a toxicity test.
(o) Detergents, surface active agents, or other substances which may cause excessive foaming in the WWF.
(p) Any waters or wastes containing strong acid, iron, pickling wastes, or concentrated plating solutions whether neutralized or not.
(q) Any waters or wastes containing phenols or other taste or odor producing substances, in a concentration exceeding limits which may be established by the POTW as necessary after treatment of the composite sewage to meet the requirements of the state, federal, or other public agencies of jurisdiction for that discharge to the receiving waters.
(r) Any garbage that has not been properly shredded, which shall mean particles in size no greater than 1/2 inches measured in any dimension.
(s) Any waste containing restricted substances in quantities in excess of the City's local limits, measured at the point of discharge into any sewer system, as adopted by the South Central Regional Wastewater Treatment and Disposal Board and contained in the Interlocal Agreement entered into between the City of Boynton Beach and the City of Delray Beach. Such local limits are incorporated herein by reference. The City may also develop best management practices (BMPs) to implement local limits. Such BMPs shall be considered local limits and pretreatment standards for the purpose of this Article.
(t) Any waste from sodium-cycle action exchange (water softening) units from industrial or commercial users where the chloride content exceeds 645 milligrams per liter.
(u) Any water or waste with a chlorine demand greater than 15 milligrams per liter.
(v) Any radioactive wastes or isotopes or half- life or concentration as may exceed limits established by the POTW in compliance with applicable state or federal regulations.
(w) Volume of flow or concentration of wastes constituting a slug discharge as defined in Section 26-115.
(x) Any waters or wastes containing substances which are not amenable to treatment or reduction by the wastewater treatment processes employed, or are amenable to treatment only to that degree that the wastewater treatment plant effluent cannot meet the requirement of other agencies having jurisdiction over discharge to the receiving waters.
(y) Any waters or wastes containing suspended solids in excess of 400 milligrams per liter unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
(z) Any waters or wastes with a five-day, 20° C. B.O.D. greater than 400 milligrams per liter unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
(aa) Any waters or wastes containing chemical oxygen demand (COD) greater than 800 mg/l unless the user is approved by the city and provided further that the user complies with the requirements of the city's high strength sewer surcharge system.
Pollutants, substances, or wastewater prohibited by this section shall not be processed or stored in such a manner that they could be discharged to the WWF. Except where expressly authorized by an applicable pretreatment standard or requirement, no user shall ever increase the use of process water, or in any other way attempt to dilute a discharge as a partial or complete substitute for adequate treatment to achieve compliance with a pretreatment standard or requirement. The City may impose mass limitations on users that are using dilution to meet applicable pretreatment standards or requirements.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13)
(a) If any waters or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in Section 26-142, and which, in the judgment of the Utilities Director, may have a deleterious effect upon the sewage works, processes, equipment, or receiving waters or which otherwise create a hazard to life or constitute a public nuisance, the Utility Director may:
(1) Reject the wastes.
(2) Require pretreatment to an acceptable condition for discharge to the public sewers.
(3) Require control over the quantities and rates of discharge.
(4) Require payment to cover the added cost of handling and treating the wastes not covered by existing fees or sewer charges as contained in the strength charge system.
(b) If the WWF permits the pretreatment or equalization of waste flows, the plans for the design and installation of the equipment shall be subject to the review and approval of the WWF and the city and subject to the requirements of applicable codes, ordinances, laws, and compliance schedules as established by the city. In addition, any major contributing industry as defined by 40 CFR 403 shall comply with 40 CFR 403 12 and any other regulation as shall from time-to-time be established by EPA or other appropriate regulating governmental agency.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 01-58, § 2, 12-4-01; Ord. 10-002, § 2, 1-19-10; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
(a) Grease, oil, hair, lint and sand interceptions are to be provided when, in the judgement of the Utilities Director, they are necessary for the proper handling of liquid wastes containing grease or any other restricted substance in excessive amounts or any flammable wastes, sand, or other harmful ingredients, except that those interceptors shall not be required for private living quarters or dwelling units. All interceptors shall be of a type and capacity approved by the city and shall be so located as to be readily and easily accessible for cleaning and inspection.
(b) All new and existing businesses or industries that wash cars will be required to install and maintain an oil/water separator in the sewer service discharge. For outdoor car washing, the wash pad must be sheltered so stormwater will not be discharged to the sanitary sewer system. Complete containment of all car wash areas using curbing or mountable traffic bumps as required to prevent runoff of wash discharge to storm drainage facilities. All new and existing businesses or industries that use petroleum based products in day to day activities will be required to install an oil/water separator in the sewer service discharge if floor drains connect to the sanitary sewer. No domestic effluent shall be allowed to discharge through the oil/water separator as stated in the plumbing code section of the Florida Building Code.
(c) All units have to meet the standards of the Florida Plumbing Code effective March 1, 2009. If a later edition of this code or subsequent amendments is made to the applicable minimum code, then those revisions or subsequent amendments shall automatically become the adopted code under this chapter.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13)
Where preliminary treatment or flow equalizing facilities and/or interceptors are provided for any waters or wastes, they shall be maintained continuously in satisfactory and effective operation by the user at his or her expense. Use of solvents and/or detergents and/or soaps, and/or degreasers is restricted to those levels which do not interfere with the proper functions of the interceptors. Interceptors like, but not limited to, grease traps, lint traps, or grit traps must have a watertight closure for their inspection covers. The covers themselves must be of a type to conform with the plumbing codes of the city’s Building Department.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
All users of the public sewers or sanitary sewers shall recognize and comply with the following:
(a) The economy and desirability of the combined treatment of industrial and commercial wastes and sanitary sewage is recognized. However, not all types and quantities of industrial and commercial wastes can be so treated. It shall be the policy to admit the types and quantities of industrial and commercial wastes that are not harmful or damaging to the structures, processes, or operation of the sewage works or are not specifically prohibited. In all cases, a special permit will be issued which will state specific conditions and requirements to be maintained. It is also recognized that to provide this service, additional facilities or treatment are required, and the cost of that must be borne by the user receiving the benefits.
(b) (1) Approval in advance by the city is required for the anticipated admission of industrial or commercial wastes into the public sewers having:
a. A five-day, 20° C. B.O.D. greater than 220 milligrams per liter, or chemical oxygen demand (COD) greater than 440 milligrams per liter.
b. A suspended solids content greater than 175 milligrams per liter.
c. An oil/grease content greater than 100 milligrams per liter.
(2) The user shall provide chemical analyses of the discharge according to a schedule to be established by the WWF and continued discharge shall be subject to approval of the city.
(c) Samples shall be collected so as to be a representative sample of the actual quality of the wastes. Samples for analysis may be collected by the user or his or her representative. Analysis shall be made by a registered sanitary engineer or graduate chemist whose qualifications are acceptable to the city or a wastewater treatment plant operator licensed and registered in the state, or a water testing laboratory certified by the state, using the laboratory methods for the examination of wastewater as set forth in 40 CFR 136, Chapter 62-160, F.A.C., and Chapter 62-625.600, F.A.C. (also see 26-158).
(d) When required by the Utilities Director, any establishment discharging industrial or commercial wastes into the sewer system shall construct and maintain at its sole expense a suitable control manhole or other suitable control station downstream from any treatment, storage, or other approved works to facilitate observation, measurement and sampling of all wastes including all domestic sewage from the establishment. The location and methods of construction of the control station shall be approved by the Utilities Director. The control station shall be maintained by the establishment so as to be safe and accessible at all times. If any establishment wishes to meter its waste discharge into the sewer system to verify in-product water retention or other uses of metered flow, they may, at their sole expense, install a flow-metering device as approved by the Utilities Director. The control station shall be accessible to city personnel at all times for sampling. All authorized WWF or city employees shall be permitted, upon suitable notice to the user, to enter upon all properties for the purpose of inspection, observation, measurement, sampling, and testing in accordance with provisions of this chapter. When required, construction of those facilities shall be completed within 90 days following written notification by the city.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
(a) Purpose and Intent. The purpose of this section is to provide for the implementation of the oil and grease management program and the surcharge program. The objective of the oil and grease management program is to minimize the introduction of fat-soluble wastes to the collection system. The objective of the surcharge program is to recover the costs from users for receiving and treating abnormally high-strength compatible wastes, such as CBOD and total suspended solids (TSS).
(b) Oil and Grease Prevention Program.
(1) The discharge by a user to the public sewer of certain liquids or wastes is prohibited unless authorized under the provisions of this section.
(2) Wastes which contain oil and grease may be discharged to the public sewer in accordance with the conditions set forth in this section.
(3) Wastes containing oil and grease, including materials processed through garbage grinders, shall be directed to a grease interceptor or trap.
(4) Wastes containing residual (trace amounts] petroleum-based oil and grease shall be directed to an oil/water separator.
(5) Sanitary facilities and other similar fixtures shall not be connected or discharged to an oil and grease interceptor or an oil/water separator.
(6) Liquid wastes shall be discharged to an oil and grease interceptor or oil/water separator through the inlet pipe only and in accordance with the design/operating specifications of the device.
(7) Oil and grease interceptors and oil/water separators shall be installed in an outdoor location that provides easy access at all times for inspections, cleaning and proper maintenance, including pumping.
(8) Minimum removal efficiency for oil and grease interceptors for animal fats and vegetable oils shall be eighty (80) percent. Minimum removal efficiency for oil/water separators for trace petroleum based wastes shall be ninety (90) percent.
(9) The Utilities Director may request that the nonresidential user provides documentation on the design and performance of the oil and grease interceptor or oil/water separator, including but not limited to catalog cuts, performance data, materials of construction, installation instructions and operation and maintenance manual.
(10) The Utilities Director at his/her discretion may assign a nonresidential user to the surcharge program if, in his/her opinion, discharges from the nonresidential connection will have a negative impact on the Treatment Works.
(c) Design.
(1) Oil and grease interceptors and oil/water separators shall be designed and constructed in accordance with this section, the Utilities' Engineering Design Handbook and Construction Standards, latest edition and other applicable state and local regulations. Design and construction shall be approved by the Utilities Director.
(2) The design of oil/water separators shall be based on peak flow and, where applicable, capable of treating and removing emulsions. Oil/water separators shall be sized to allow efficient removal (retention) of the petroleum-based oils and grease from the user's discharge to the public sewer.
(3) Alternative oil, and grease removal devices or technologies shall be subject to written approval by the Utilities Director and shall be based on demonstrated (proven) removal efficiencies. Under-the-sink oil and grease interceptors are prohibited for new facilities, except as approved bv the Utilities Director for existing facilities with limited food preparation and cooking such as some bakeries and warming kitchens.
(4) An adequate number of inspection and monitoring points, such as a control manhole or inspection box, shall be provided.
(d) Capacity. The capacity of the approved oil and grease interceptor and oil/water separator shall be in accordance with the requirements set forth in the latest edition of the Utilities' Engineering Design Handbook and Construction Standards. The Utilities Director may modify the requirements on a case by case basis.
(e) Maintenance.
(1) Cleaning and maintenance shall be performed by the user. Cleaning shall include the complete removal of all contents including floating materials, wastewater, and bottom sludge and solids.
(2) Decanting, backflushing or discharging of removed wastes back into the oil and grease interceptor of (for) oil/water separator from which the waste was removed or any other oil and grease interceptor or oil/water separator, for the purpose of reducing the volume to be hauled and disposed is prohibited.
(3) Oil and grease interceptors and oil/water separators shall be pumped out completely at a minimum frequency of once every ninety (90) days, or more frequently as needed to prevent carryover of oil and grease into the collection system. Under-the-sink oil and grease traps shall be cleaned at a minimum frequency of once per week, or more often as necessary to prevent pass through of grease and other food solids to the collection system. Cleaning and maintenance shall include removal of materials from the tank walls, baffles, cross pipes, inlets and outlets.
(4) Pumping frequency shall be determined by the Utilities Director based on flows, quantity of oil and grease in the discharge, volume of business, hours of operations and seasonal variations. However, in no event shall the time frame between the pumping of the oil/water interceptor or oil/water separator exceed ninety (90) days. The user shall be responsible for maintaining the oil and grease interceptor or oil/water separator in a satisfactory condition for efficient operation. An interceptor shall be considered to be out of compliance if the grease layer on top exceeds six (6) inches and the solids layer on the bottom exceeds twelve (12) inches or if removal efficiencies as determined through sampling and analysis indicate less than eighty (80) percent.
(5) Wastes removed from each oil and grease interceptor or oil/waste separator shall be disposed of at a facility permitted to receive such washes or a location designated by the city for such purposes in accordance with the provisions of this section. In no way shall the pumpage be returned to any private or public portion of the collection system or the treatment plants without prior written approval from the Utilities Director.
(6) Additives placed into the oil and grease interceptor, (oil/water separator) or building discharge line on a constant, regular or scheduled basis shall be reported to the Utilities Director in writing at least five (5) days prior to use. Such additives include, but are not limited to, emulsifiers, enzymes, commercially available bacteria or other additives designed to absorb, purge, consume, treat or otherwise eliminate grease and oils. Any use of additives shall be approved in writing by the Utilities Director prior to introduction into the waste stream, interceptor or separator. The use of additives, shall, in no way be considered as a substitution for the maintenance procedures required herein.
(f) Facility information.
(1) A log of pumping activities shall be maintained by the user for the previous twelve (12) months The log of pumping activities shall be posted in a conspicuous location for immediate access by city personnel. The log shall include the date, time, volume pumped, hauler's name and license number and hauler's signature. The user shall report pumping activities within forty-eight (48) hours to the Utilities Director on the form so designated by the city for such purposes.
(2) The user shall maintain a file on site of the records and other documents pertaining to the facility's oil and grease interceptor or oil/water separator. Required file contents shall include, as a minimum, the record (as-built) drawings, record of inspections, log of pumping activities and receipts, log of maintenance activities, hauler information, disposal information and monitoring data. The file shall be available at all times for inspection and review by the Utilities Director.
(g) Enforcement and Noncompliance.
(1) Noncompliance with the requirements of this section may result in enforcement action by the city including, but not limited to, termination of water service.
(2) The user shall pay all outstanding fees, penalties and other utility charges prior to reinstatement of water and sewer service.
(3) Any user in the oil and grease management program found in violation of the provisions in this section, and any orders, rules, regulations and permits that are issued pursuant to the chapter, shall be served by the Utilities Director with written notice by personal delivery or by registered or certified mail that states the nature of the violation and providing a reasonable time limit for satisfactory correction of the violation. The affected user shall permanently cease all violations within the time period specified in the notice.
(Ord. No. 93-8, § 2, 5-18-93; Ord. No. 99-21, § 1, 8-3-99; Ord. 10-002, § 2, 1-19-10; Ord. No. 12-019, § 2, 12-4-12; Ord. No. 13-032, § 2, 11-9-13) Penalty, see Sec. 26-177
Subdivision E. National Categorical Pretreatment Standards
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