Commercial Fats, Oils & Grease Stephen Sealey Wastewater - - PowerPoint PPT Presentation
Commercial Fats, Oils & Grease Stephen Sealey Wastewater Compliance Specialist City of Columbia January 7 th & 8 th , 2014 1 What is FOG? Important Definitions Fat, oils, and grease (FOG) Any liquid or solid material composed
Stephen Sealey
Wastewater Compliance Specialist City of Columbia January 7th & 8th, 2014
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○ Any liquid or solid material composed primarily of fats,
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○ Any commercial facility that must install a Grease Trap or Grease
Interceptor before discharging kitchen or food prep wastewater into the City’s wastewater system
○ Examples include (not limited to) ■ Restaurants
■ Motels/Hotels
■ Cafeterias
■ Hospitals
■ Schools
■ Bars
■ Any establishment required to have an SCDHEC food service license
and/or permit
■ Any other facility at the sole discretion of the City
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Grease is a
PREVENTABLE
maintenance issue
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○ Sewer lines, Lift stations, Wastewater Treatment Plant ○ Average Cost of a grease related overflow (2 hours) exceeds $1,500
and includes the following equipment and personnel:
■ Stoppage Crew ■ Vactor Truck ■ CCTV Crew ■ Additional equipment and cleanup costs
○ Overflows can lead to water quality impacts, legal fees or fines
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○ FOG Limit of 100mg/L ○ Article IV Section 23-102
○ Part 29: Fats, Oils & Grease Management Regulations ○ Part 30: Specifications for Grease Traps & Grease
Interceptors
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○ Establishes uniform registration, operating, maintenance, cleaning,
and inspection requirements
○ Designed to limit and control the discharge of fats, oils, and grease
from Food Service Establishments (FSEs) into the City's wastewater collection system.
○ Reducing fat, oils and grease from entering the city sewer lines and
clogging or blocking lines causing backups
○ Establish a registration and GPS database for all FSE’s.
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○ Provide guidelines and requirements for design and
installing grease traps and grease interceptors.
■ City Sizing requirements (4 options) ■ Grease trap design and
specifications
■ Grease interceptor design and
specifications
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Source: http://www.columbiasc.net/depts/utilities-engineering/docs/ww/uefilewwgreasetrapsizingguide.pdf
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○ Information collected ■ 120 seats
■ Open 10 hours a day
■ Flow Rate = 25 (Cooking intensive with washable dishware) ○ Option B: Cooking Intensive Establishment ■ = # seats x Flow Rate x (Hours of operation / 18) ■ = 120 x 25 gal x (10hrs / 18) ■ = 2500 gallon capacity
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Submit Engineer Drawings and calculations that support an alternative size to the City for consideration (option D).
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○ Must be cleaned out at least once every 6 months ○ May be more often as deemed necessary (typically quarterly some as
frequent as weekly).
○ Remove oil laden water and refill with clean water ○ Include cleaning the sidewalls and “T’s”
○ Maintain a log (witness contractor pumpouts) ○ Include manifest tickets ○ City will use FSE’s documentation to verify regular cleaning ○ City inspectors observes most pump outs
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Source: http://www.columbiasc.net/depts/utilities-engineering/docs/uefilewwgreasemaintlogtemp.xls
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○ Determine if excessive FOG is exiting the device
○ Grease mats that float on the surface (measuring
depth as needed )
○ Visually inspection discharge “T” and cleanouts to
determine if grease is present.
○ If grease is present, mainline also inspected and
discharge sampled as needed.
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measures
○ Grease mat ○ Sludge accumulation on the bottom of grease
containment devices (grease + sludge >25% water column = violation)
issued?
○ Enough FOG accumulated in device to discharge to
sewer
○ FOG actively discharging into sewer ○ Structural Failure of device
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Grease Trap Survey
INSPECTION DATE:_____________________________________ INSPECTOR NAME: __________________________________ NAME OF FACILITY:__________________________________________________________________________________________ ADDRESS (STREET #, NAME, TYPE & ZIP):_______________________________________________________________________ FACILITY PHONE #:___________________________________________________________________________________________ FACILITY CONTACT PERSON (MANAGER):________________________________________________________________________ GREASE TRAP DEVICE AVAILABLE: YES _______NO______ TRAP SIZE: _______ LOCATION: ______________________ HAULER USED: ___________ # OF LIDS: __ LAST PUMP DATE: _________ TRAP SIZE: _______ LOCATION: ______________________ HAULER USED: ___________ # OF LIDS: __ LAST PUMP DATE: _________ PUMP OUT FREQUENCY ON SCHEDULE? Y N HOW OFTEN ARE TRAP(S) CLEANED? ________________________________ MAINTENANCE LOG MAINTAINED? Y N WILL IN FUTURE FURNISHED PASS OR FAIL INSPECTION? ______ IF FAIL – TYPE OF ENFORCEMENT ACTION: _______________ DATE MAILED: _____________ IF NO TRAP HOURS OF OPERATION: SEAT COUNT: FULL SERVICE OR NONWASHABLES SINK MEASUREMENTS: UNDER SINK MEASUREMENTS: COPY OF MENU NEEDED □ MENU ATTACHED FACILITY REPRESENTATIVE SIGNATURE: _______________________________________________________________________________ FACILITY OWNER E-MAIL:______________________________________________________________________________________________ ADDITIONAL COMMENTS:
○ www.ColumbiaSC.Net/Wastewater ■ Frequently Asked Questions ■ Sizing Guide ■ Maintenance Log ■ Engineering Regulations Part 29 & 30
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