Water Services Training
Group
Guidance Document
Control of Fat Oil and Grease
Launch Seminar
26th January 2012
FOG Guidance Document Launch Seminar
26th January 2012
Dublin City Council’s
Experience – A Case Study
Michael O’Dwyer
Executive Engineer
Dublin City Council
FOG Guidance Document Launch Seminar
26th January 2012
The Problem
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Blockages in sewers
Problems at pumping stations and WWTP
Costs to Local Authorities
Pollution of Waters
Flooding of properties
Health and Safety issues
- Code of practice for confined space entry
FOG Guidance Document Launch Seminar
26th January 2012
Blocked Sewer
FOG Guidance Document Launch Seminar
26th January 2012
Pollution of Waters
FOG Guidance Document Launch Seminar
26th January 2012
Health and Safety issues
FOG Guidance Document Launch Seminar
26th January 2012
Code of Practice for entry to
Confined Spaces
FOG Guidance Document Launch Seminar
26th January 2012
Background
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Growth in sector during 1997 - 2007
80% of FOG related blockages occurring in
areas with high concentration of FSE
Only 2% of FSE with adequate grease
trapping equipment
Limited resources available to tackle
problem
FOG Guidance Document Launch Seminar
26th January 2012
The Solution
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Prevention at source
DCC launch FOG programme 2008
Locate, identify and survey all FSE
Ensure all FSE hold a Trade Effluent
Licence
Ensure grease trapping equipment is sized
appropriately
Ensure grease trapping equipment is
maintained
Promote Good Kitchen Practice
FOG Guidance Document Launch Seminar
26th January 2012
The Solution (continued)
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Regular environmental inspections to
ensure compliance
Focus on problem areas
Enforcement of non-compliances
Cost of implementation of programme
borne by FSE (Polluter Pays Principle)
FOG Guidance Document Launch Seminar
26th January 2012
Challenges Faced
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Resistance to FOG programme
Use of additives
Inadequate grease trapping
equipment
Confusion over sizing of grease traps
FOG Guidance Document Launch Seminar
26th January 2012
Challenges Faced
Large number of undersized grease trapping equipment
installed
FOG Guidance Document Launch Seminar
26th January 2012
Additives
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Chemicals / surfactants / emulsifiers not
acceptable
Bacteria acceptable in conjunction with
passive grease trap
Introduction of testing and permitting of
bacteria products
FOG Guidance Document Launch Seminar
26th January 2012
“I don’t use any grease”
FOG Guidance Document Launch Seminar
26th January 2012
“I don’t use any grease”
FOG Guidance Document Launch Seminar
26th January 2012
Typical Quantity of FOG produced
per FSE type (Litres per year)
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Full Service Restaurant – 828 litres
Hospital – 2352 litres
Fast Food Restaurants – 906 litres
Company/Office Canteen – 1212 litres
Hotel – 1596 litres
Convenience Store/Deli – 232 litres
Nursing Home – 276 litres
Public House – 624 litres
FOG Guidance Document Launch Seminar
26th January 2012
Poor Kitchen Practices
Waste oil stored in uncovered drums not in bunded area
FOG Guidance Document Launch Seminar
26th January 2012
Poor Kitchen Practices
FOG Guidance Document Launch Seminar
26th January 2012
Structure of 2008 – 2011
Contract
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Schedule of rates
Excellent for the initial survey of FSE
Routine monitoring minimum four times
per year
FOG Guidance Document Launch Seminar
26th January 2012
Progress to date
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Approx 2,100 FSE
Over 22,000 environmental inspections
carried out
90% of FSE currently licensed
74% of licensed premises compliant
Approx 1,100 tonnes of FOG prevented
from entering drainage network in 2011
FOG Guidance Document Launch Seminar
26th January 2012
Progress to date
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Significant reduction in the number of
JetVac hours spent on call outs to FOGrelated blockages
No major blockage requiring man-entry to
sewer since March 2010
FOG Guidance Document Launch Seminar
26th January 2012
Enforcement
Commenced legal action against noncompliant FSE in mid 2010
To Date:
- 206 prosecutions initiated
- 10 convictions
- 147 cases settled out of court
- 40 currently in system
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FOG Guidance Document Launch Seminar
26th January 2012
Annual Licence Charges
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Cost of implementation borne by FSE
2008 – 2010 fixed charge per type of FSE
2011 introduced incentivised payment
scheme
Risk based approach with annual charges
ranging from €315 - €1255
FOG Guidance Document Launch Seminar
26th January 2012
Best Practice
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Regular inspections necessary to ensure
compliance
Clear guidance and information must be given
to FSE operators
Correct sizing of grease traps very important
Good record keeping very important
Enforcement necessary for successful
programme
Positive response to incentivised charging
structure
FOG Guidance Document Launch Seminar
26th January 2012
Phase 2 / Moving Forward
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New contract commenced January 2012
Contract to supply suitably qualified resources
gives DCC more flexibility & price certainty
Managed in-house
Positive engagement with food industry
groups
Better use of IT
FSE also inspected for compliance with Food
Waste Regulations
Potential to share services between local
authorities
FOG Guidance Document Launch Seminar
26th January 2012