A.
Purpose.
1.
The purpose of this article is to facilitate the maximum beneficial use of the City's sewer services and facilities while preventing blockages of the sewer lines resulting from discharges of fats, oils, and grease (FOG) into the public sewer, and to specify appropriate FOG discharge requirements for food service establishments (FSEs) as defined herein.
2.
This article shall apply to both direct and indirect discharge of wastewater containing FOG carried to the public sewer.
3.
The provisions set forth in this article are designed to ensure compliance with Federal, state, and local laws and regulations, and to allow the City to meet applicable standards.
4.
This article also establishes quantity and quality standards on all discharges containing FOG, which may alone or collectively cause or contribute to FOG accumulation in the sewer facilities causing or potentially causing or contributing to the occurrence of sanitary sewer overflows (SSOs).
B.
Definitions.
1.
Unless otherwise defined herein, terms related to water quality shall be as adopted in the latest edition of Standard Methods for Examination of Water and Wastewater, published by the American Public Health Association, the American Water Works Association and the Water Environment Federation. Testing procedures for waste constituents and characteristics shall be as provided in 40 Code of Federal Regulations 136.
2.
Subject to the foregoing, the meaning of the terms used in this chapter shall be as follows:
a. "Best management practices (BMPs)"
means activities, prohibitions, maintenance procedures and other management practices to prevent or reduce the direct or indirect introduction of FOG into the public sewer as defined in Attachment C of the FOG Permit.
b. "Change in operations"
means any change in the ownership, food types, or operational procedures that have the potential to change the amount of FOG discharged by the FSEs in an amount that alone or collectively causes or creates a potential for SSOs to occur.
c. "Collection system"
means portions of the public sewer consisting of all pipes, sewers and conveyance systems conveying wastewater to the publicly owned treatment works (POTW), excluding privately owned sewer service lateral line.
d. "Compliance schedule"
means a time schedule, enforceable under the provisions of this chapter, which contain increments of progress (e.g., milestones, in the form of dates). These milestones shall be for the commencement and/or completion of major events leading to the construction and operation of additional pretreatment facilities or the implementation of policies, procedures or operational management techniques, or repairs and corrections required for permittees to comply with all applicable Federal, State or local environmental regulations which may directly or indirectly affect the quality of the permittee's wastewater.
e. "Composite sample"
means a collection of individual samples obtained at selected intervals based on an increment of either flow or time. The resulting mixture (composite sample) forms a representative sample of the waste stream discharged during the sample period.
f. "Enforcement officer"
means any City employee or agent of the City with authority to enforce the provisions of this chapter and the authority to make any decision on behalf of the City Engineer/ Public Works Director required or called for by this chapter.
g. "Fats, oils, and grease" or "FOG"
means any substance such as vegetable or animal product that is used in, or is a byproduct of, the cooking or food preparation process, wax and other trichlorotrifluoroethane soluble material, or any substance that originates from petroleum or minerals that becomes or may become viscous, or solidifies or may solidify, with a change in temperature or other conditions.
h. "FOG control program"
means the FOG control program developed by the City, as required by and pursuant to State Water Resources Control Board Order No. 2006-0003, and any subsequent modifications.
i. "FOG wastewater discharge permit" or "FOG WDP"
means a permit issued by the City, subject to the requirements and conditions established by the City, authorizing a permittee to discharge wastewater from a FSE into the public sewer.
j. "Food service establishment" or "FSE"
means a facility, including but not limited to any commercial entity discharging wastewater into the collection system, operating in a permanently constructed structure such as a room, building or place, or portion thereof, maintained, used or operated for the purpose of storing, preparing, serving or manufacturing, packaging or otherwise handling food for sale to other entities, or for consumption by the public, its members or employees, and which has any process or device that uses or produces FOG, or grease vapors, steam, fumes, smoke or odors that are required to be removed by an exhaust hood pursuant to Cal. Health & Safety Code § 114149.1 or in accordance with the California Uniform Retail Food Facilities Law (CURFFL) (Cal. Health & Safety Code § 113700 et seq.). A limited food preparation establishment is not considered an FSE when engaged only in reheating, hot holding, or assembly of ready to eat food products, provided that there is no wastewater discharge containing a FOG that exceeds 100 mg/L.
k. "Food grinder"
means any device installed in the plumbing or sewage system for the purpose of grinding food or food waste.
l. "Grease control device"
means any grease interceptor, grease trap or other mechanism, device or process which attaches to, or is applied to, wastewater plumbing fixtures and lines, the purpose of which is to trap, collect or treat FOG prior to it being discharged into the public sewer. A grease control device may also include any other proven method to reduce FOG subject to the approval of the Director.
m. "Grease disposal mitigation fee"
means a fee charged to a permittee when there are physical limitations to the property that make the installation of the usual and customary grease interceptor or grease control device for the FSE impossible or impracticable. The grease disposal mitigation fee is intended to cover the costs of increased maintenance of the public sewer, for inspection and cleaning of FOG that a usual and customary, and properly maintained, grease control device would otherwise prevent from entering the public sewer.
n. "Grease interceptor"
means a multi-compartment device that is generally required, according to the California Plumbing Code, to be located underground between an FSE and the connection to the public sewer. These devices primarily use gravity to separate FOG from the wastewater as it moves from one compartment to the next. To be effective, these devices must be cleaned, maintained and have the FOG removed and disposed of in a proper manner, at regular intervals.
o. "Grease trap"
means a grease control device that is used to serve individual plumbing fixtures and should only be used in those cases where the use of a grease interceptor or other grease control device is determined by the Director to be impossible and/or impracticable. A grease trap is typically installed indoors, under or near a dishwashing sink.
p. "Hot spots"
mean areas in public sewer lines that have experienced SSOs or that must be cleaned or maintained frequently to avoid blockages of the public sewer.
q. "Infiltration"
means water entering the public sewer from the ground through such means as defective pipes, pipe joints, connections or manhole walls.
r. "Inspector"
means a person authorized by the Director to inspect any existing or proposed wastewater generation, conveyance, processing and/or disposal facilities.
s. "Interceptor"
means a grease interceptor.
t. "Manifest"
means that receipt which is retained by a permittee for the disposal of FOG, recyclable wastes and/or liquid waste.
u. "Obstruction"
means any discharge which, alone or in combination with discharges from other sources, inhibits or disrupts the public sewer operations or is otherwise a violation of the Dixon Municipal Code, including but not limited to its waste discharge requirements.
v. "Permittee"
means a FSE that has received a FOG WDP and is subject to the requirements and conditions established in this article or as otherwise established by the Director.
w. "Remodeling"
means any physical and/or operational change to a FSE causing a change in FOG quantity or consistency and/or that involves any one (1) or a combination of the following:
(Ord. 14-009 § 1)