John Jones – General ManagerEPA Landfill Workshop - 21st October 2009

Practical Aspects of Landfill Gas Management at Greenstar Landfills

Greenstar – who are we?

Established 1999.Irish owned and managed.Part of NTR Plc group of companies – Recycling, Solar, Wind, Biofuel.Ireland’s largest waste management company.Waste collection, Recycling, Composting, Residual Landfill with Energy Recovery.Manages household, commercial and industrial wastes.Award winning recycling and landfill operations.Operates Ireland’s most environmentally compliant landfills.

Greenstar – Integrated Waste Services

Landfills in Ireland

Ballynagran Residual Landfill – WM165-01

Facility opened during October 2006.Accepts 150,000 tpa of residual waste per annum.Currently have approximately 400,000 tonnes of residual waste

in place.Burning approximately +2,600m3/hr of landfill gas.Planning obtained for gas utilisation plant. Awaiting ESB approval. Awarded CIWM PEELs Cup for Operational Excellence during 2008.Awarded International Green Apple Award for Environmental

Best Practice 2009.Awarded ISO 14001 Certification during January 2009.Currently working towards ISO 18001.All Greenstar Landfill are ISO 14001 certified.

Aerial view of Ballynagran Landfill

Why Collect Landfill Gas?

Kyoto Protocol – legally biding agreement for reducing emissions of greenhouse gases.

EU Landfill Directive – “Landfill gas shall be collected from all landfills receiving biodegradable waste and the landfill gas must be treated and used. If the gas collected cannot be used to produce energy, it must be flared.”

Waste Management Licence Conditions – Gas migration / treatment / odour control

EPA Landfill Manuals and BAT for Landfill Operations

EU Renewable Energy Target % national electricity consumptionn

EU Directive 2001/77/EC – national indicative target - 13.2% by 2010

Irish Government Target (2007) – 15% RE by 2010

Irish Government Target (2007) – 33% RE by 2020

Landfill Gas Management

Landfill Gas Collection InfrastructureDrilled WellsBuilt up WellsHorizontal TrenchesPin WellsFlaresGas Engines / Utilisation

Day to day managementBalancing the fieldFID surveysDaily checksRemote access

Waste Acceptance

Waste Acceptance

Some potential sources of gas contamination include:

Commercial lubricants – SiloxanesWastewater treatment sludges – Siloxanes Cleaning agents - Siloxanes Gypsum – Hydrogen Sulphide Crushed demolition waste containing plaster – Hydrogen Sulphide

Ballynagran Landfill Summer 2008

Drilling Gas Wells

Built up Well

Raising a Built up Well

Built up gas well

x

x

x

x

xx

x

o oo o

oo

o

o

o

oo

o

o

o

oo

o

oo

o

o

o

o

o

o

o

o o

o

Lid

o

Lifting eyes

600mm dia. x 3m long steel tube

Drainage stone

125mm slotted pipe

3m

x

xx

x

xx

xx

x

Waste Surface

0.6 m

Waste

Installing temporary horizontal trench

Installing temporary horizontal trench

Permanent Horizontal Trench at KTK Landfill

Pin Well Installation at Connaught Landfill

Pin Wells on flank at Connaught Landfill

Approximate Costs

Drilled Wells +100 euro/m

Temporary Horizontal Trenches +5 euro/m

Pin Wells +80 euro each

Built Wells +20 euro/m

Cross Section Through Landfill

Landfill Liner

Pin Wells

Built up well

Inter Cell Bund

Temporary Clay Cap3m lift of wasteHighly permeable

woodchip cover

Leachate drainage Blanket

Reinforced Polyethylene Temporary Capping at Connaught Landfill

Temporary Capping at Connaught Landfill

Temporary Capping at Knockharley Landfill

Efficiency in Gas Collection

Galway Landfill Gas Generation and Collection

0

500

1000

1500

2000

2500

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033

LFG

Col

lect

ed /

Gen

eray

ted

(m3/

hr)

Actual gas Collected @ 50% CH4 Golders 2008 Model 50%ile Golders 2008 Model 95%ile

Woodchip Odour Abatement Layer in Daily Cover

Source: Dr. P Solan PhD, University College Dublin 2008

Dr. P Solan, UCD carried out laboratory testing on bio-filtration properties of woodchip when used as bio filtration layer on landfills.

Odour reduction due to application of daily cover on the working face is in excess of50% and virtually 100% when background odours are taken into consideration.

Woodchip cover at Knockharley Landfill

500m3/hr Mobile Flaring Unit

Generator Bunded Fuel Feeder Tank

KO Pot Manifold

Compressor

Flare

Connaught Landfill

Knockharley Landfill

Power Generation

Site Go Live

KTK Currently 3.6 MWKnockharley Late 2009 5.6 MWBallynagran Early 2010 4.2 MWConnaught Early 2010 4.2 MW

Total 17.6MW

Bioverda Power Systems : Power Generation Locations

Current Operating Sites

Site LF Operator Installed Generation

Balleally Fingal CC 5.0MW

Ballyogan Dun Laoghaire Rathdown CC

2.0MW

Friarstown South Dublin CC 0.6MW

Dunsink Fingal CC 1.2MW

Arthurstown South Dublin CC 14.2MW

KTK Greenstar 3.8MW

Kinsale RD Cork City Council 1.0MW

Sites Under Development

Knockharley Greenstar 5.6MW

Ballynagran Greenstar 4.2MW

Kilconnell Greenstar 4.2MW

• In 2008 Greenstar/BPS generated 160GWh – enough to power approx. 30,000 households ~ 5.4% of ROI renewable energy usage.

Arthurstown Landfill, Kill

Power generation from landfill gas started 2005

Site has a total export capacity of 14MW :

Site equipment : 11 engines and 3 booster stations

BPS were responsible for the design, installation and commissioning of the facility.

BPS are responsible for electricity generation and gas flaring infrastructure

BPS are responsible for negotiating power off-take agreements with electricity suppliers.

Annual availability >93% of uptime

Arthurstown MWH Trend

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

Jan‐06

Mar‐0

6Ma

y‐06

Jul‐06

Sep‐0

6No

v‐06

Jan‐07

Mar‐0

7Ma

y‐07

Jul‐07

Sep‐0

7No

v‐07

Jan‐08

Mar‐0

8Ma

y‐08

Jul‐08

Sep‐0

8No

v‐08

Jan‐09

High Density of Gas Abstraction Infrastructure at KTK Landfill

High Density of Gas Abstraction Infrastructure at Ballynagran Landfill

Balancing the Gas Field

FID Survey

FID Survey

EPA Landfill Gas ComplianceEPA/OMI Diffuse Source LFG Leakage Comparison on 2009 results to date on regional public file

0

2

4

6

8

10

12

Ballynag

ran Landfill

East Galw

ay La

ndfill

Gortadrom

a Landfill

Kinsale

Road Landfill

North K

erry L

andfill

Ballydon

agh Landfi

ll

Ballagh

adereen L

andfill

Derrinum

era Landfill

Ballynac

arrick L

andfill

Powerstown L

andfillRath

oreen Landfi

llArth

urstown Land

fillFacility Name

Num

ber o

f Diff

use

leak

are

as

Comparison of MSW Landfills EPA Annual Licence Audits 2008

0

2

4

6

8

10

12

East G

alway

Land

fill

Knock

harle

y Lan

dfill

KTK Land

fill

Ballyn

agran

Land

fill

Ballea

lly La

ndfill

Derrinu

mera La

ndfill

Inagh

Land

fill

Donoh

ill Lan

dfill

Ballyn

acarr

ick La

ndfill

Gortad

roma L

andfi

ll

Ballyd

onag

h Lan

dfill

Killurin

Land

fill

Kyletal

esha

Land

fill

Dunmore

Land

fill

Whiteri

ver L

andfi

ll

Arthurs

town L

andfi

ll

Corran

ure La

ndfill

Kinsale

Roa

d Lan

dfill

Yough

al La

ndfill

Scotch

Corn

er La

ndfill

Derryc

lure L

andfi

ll

Powers

town L

andfi

ll

Facility Name

No.

of N

on C

ompl

ianc

es

john.jones@greenstar.ie

Copies of presentation and visits to any Greenstar facilitiesavailable on request.