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Murphy Environmental Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018 March 2018
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Report Issue Form
IF-11B Revision: 02 (21st July 2011)
Client Name: Murphy Environmental
Client Address: Sarsfieldstown, Gormanston, Co. Meath
Report Title: Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Project Code: MU0122
Project Consultant (Name): Maria O’Neill
Project Consultant (Sign):
Project Consultant (Date): 9th March 2018
Approved by Project Manager (Name): Kerstie Flanagan
Approved by Project Manager (Sign):
Approved by Project Manager (Date): 9th March 2018
Issue No. Date Status
01 09/03/2018 Final Version.
Issue to Client and EPA (EDEN)
Notes/Comments:
Patel Tonra Ltd., Environmental Solutions, 3f, Fingal Bay Business Park, Balbriggan, Co Dublin Tel: 01 8020520 Fax: 01 8020525 www.pateltonra.com
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Contents
Executive Summary ................................................................................... 6 1.0 Introduction ................................................................................... 7 2.0 Methodology .................................................................................. 9 3.0 Results ........................................................................................ 10 4.0 Conclusion and Recommendations .................................................. 12
Appendices Appendix 1: Calibration Certificate for Gas Meter Appendix 2: Field Monitoring Records Appendix 3: Site Office Meter Test Certificate Appendix 4: Historical Gas Monitoring Results, W0151-01 Figures Figure 1: Monitoring Locations
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
1
Executive Summary
1. Murphy Environmental (a division of Murphy Concrete Manufacturing Ltd.)
operates a restoration and recovery facility for inert waste at its site (a sand and gravel pit) at Sarsfieldstown, Gormanston, Co. Meath, under EPA Licence W0151-01. Restoring the site will serve to return it in line with pre-quarrying conditions and integrate it into the surrounding landscape.
2. Quarter 1, 2018 monitoring of landfill gas was carried out by Patel Tonra Ltd. on the 20th February 2018 as required under Schedule D.2 of Waste Licence W0151-01.
3. Methane did not breach the relevant licence limit at any perimeter monitoring location.
4. Carbon dioxide exceeded the trigger level at 2 No. locations outside of the body of waste (G-12 and G-14). However, none of the locations where elevated CO2 gas concentrations were measured are in any building on or adjacent to the facility.
5. No gas was detected in the site office building (continuous measurement/alarm system in place).
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
1
1.0 Introduction
1.1 Background 1.1.1 Murphy Environmental (a division of Murphy Concrete Manufacturing Ltd.)
operates a restoration and recovery facility for inert waste at its site (a sand and gravel pit) at Sarsfieldstown, Gormanston, Co. Meath, under EPA Licence W0151-01. Restoring the site will serve to return it in line with pre-quarrying conditions and integrate it into the surrounding landscape.
1.1.2 The facility is licensed by the Environmental Protection Agency (EPA) and operates
under Waste Licence W0151-01. The licensee (Murphy Environmental) must manage and operate the facility to ensure that the activities do not cause environmental pollution.
1.1.3 Murphy Environmental is required to carry out monitoring of landfill gas in
accordance with Schedule D of Waste Licence W0151-01 (or as may be altered by the EPA).
1.2 Monitoring Locations 1.2.1 The gas monitoring locations as specified in Waste Licence W0151-01 are listed in
Table 1.1 below and are illustrated in Figure 1: Monitoring Locations. 1.2.2 The landfill gas monitoring locations comprise of:
9 locations within the facility
11 locations outside of the body of waste
Table 1.1: Location of landfill gas monitoring wells at Gormanston (W0151-01) as illustrated in Figure 1 Monitoring Point Ref.
Type of Monitoring Well Location N/S/E/W of site
G-6 Shallow gas probe Inside W
G-7 Shallow gas probe Inside S
G-8 Shallow gas probe Inside E
G-9 Shallow gas probe Inside E
G-11 Shallow gas probe Inside W
L-1 Gas/Leachate well Inside E
L-2 Gas/Leachate well Inside SE
L-3 Gas/Leachate well Inside SE
L-4 Gas/Leachate well Inside SE
G-12 Shallow gas probe Outside SW
G-14 Shallow gas probe Outside SW
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
1
Monitoring Point Ref.
Type of Monitoring Well Location N/S/E/W of site
G-15 Shallow gas probe Outside W
G-16 Shallow gas probe Outside S
G-17 Shallow gas probe Outside SE
G-18 Shallow gas probe Outside E
G-19 Shallow gas probe Outside E
MW–17 Gas/GW Overburden well Outside SE
MW–19 Gas/GW overburden well Outside NW
MW–20 Gas/GW overburden well Outside SE
MW–21 Gas/GW overburden well Outside W
1.2.3 Table 1.2 lists the monitoring locations for the site buildings.
Table 1.2: Location of site building landfill gas monitoring locations at Gormanston (W0151-01)
Monitoring Point Ref. Type of Monitoring Point
Manager’s Office Fixed Gas Point
Assistant Manager’s Office Fixed Gas Point
Weighbridge Office Fixed Gas Point
Toilet Fixed Gas Point
1.3 Monitoring Frequency 1.3.1 Table D.2.1 of EPA Licence W0151-01 specifies landfill gas monitoring parameters,
frequency and technique. It prescribes quarterly monitoring of landfill gas in gas boreholes/wells and weekly monitoring in the site office.
1.3.2 Adjustments to the monitoring regime were subsequently agreed by the Agency1
such that the frequency of landfill gas monitoring now required is as follows: continuous monitoring within site office, and bi-annual monitoring in gas monitoring boreholes/wells.
1 Correspondence to the Agency Ref. W0151-01/LOD/160611 of 16th June 2011 and response Ref. W0151-01/ap01JH.docx of 19th July 2011; Correspondence to the Agency Ref. W0151-01/LOD/010414 and response from the Agency dated 12/08/2014.
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
2
2.0 Methodology
2.1 Monitoring Instrumentation 2.1.1 A Geotechnical Instruments GA5000 gas meter was used for landfill gas sampling
and analysis purposes. The calibration certificate is included in Appendix 1. 2.1.2 Methane, carbon dioxide and oxygen concentrations were measured at all
positions outlined in Table 1.1. Temperature and barometric pressure were also recorded.
2.2 Sampling Personnel 2.2.1 Sampling was carried out by Kerstie Flanagan (BSc(Hons), MSc, MCIWM) and
Maria O’Neill (BSc(Hons), MSc) of Patel Tonra Ltd. on the 20th February 2018 under the instruction of Murphy Environmental.
2.3 Monitoring Boreholes 2.3.1 All boreholes were sampled from the built-in taps attached as part of the borehole
installation. The taps remained closed prior to sampling to ensure that any gases that may migrate to the standpipe were collected and not vented directly to atmosphere.
2.3.2 During sampling, the gas analyser inlet tube was attached to the gas tap and the tap
was then opened. Gases within the standpipe were extracted and analysed and all relevant landfill gas concentrations were recorded. Sampling equipment was ‘purged’ between monitoring locations, to ensure no cross-contamination of results.
2.4 Site Buildings 2.4.1 Methane is measured in the site buildings using a fixed gas meter (Type: Gas
Master).
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
3
3.0 Results
3.1 Monitoring Results – Monitoring Boreholes 3.1.1 Tables 3.1 and 3.2 below provide results for landfill gas monitoring conducted at
the Gormanston facility on the 20th February 2018 (Quarter 1, 2018).
Table 3.1: Landfill Gas Monitoring Results for Locations situated within the Facility, Q1, 2018
Location Methane
(CH4)
Carbon Dioxide (CO2)
Oxygen (O2)
Atmospheric Pressure
% v/v % v/v % v/v mbar
G-6 0.0 0.1 21.1 1025
G-7 0.0 0.1 21.8 1026
G-8 0.0 0.1 21.5 1025
G-9 No Access
G-11 0.0 3.0 16.5 1024
L-1 0.0 0.1 21.4 1025
L-2 0.0 0.7 20.0 1025
L-3 20.6 3.6 14.8 1025
L-4 0.0 0.1 21.7 1026
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
3
Table 3.2: Landfill Gas Monitoring Results for Locations situated outside the body of waste, Q1, 20182
Location Methane (CH4)
Carbon Dioxide3
(CO2)
Oxygen (O2)
Atmospheric Pressure
% v/v % v/v % v/v mbar
G-12 0.0 6.1 13.2 1026
G-14 0.0 2.7 16.4 1025
G-15 0.0 0.1 21.6 1026
G-16 0.0 0.1 20.6 1025
G-17 0.0 0.1 20.9 1026
G-18 0.0 0.1 21.2 1026
G-19 0.0 0.2 21.3 1027
MW-17 0.0 0.4 20.6 1026
MW-19 0.0 0.1 21.6 1026
MW-20 No Access
MW-21 0.0 0.1 20.8 1025
3.2 Monitoring Results – Site Office 3.2.1 Murphy Environmental confirmed that the continuous gas monitors/alarm in the
site office were serviced by a competent third party during Quarter 2, 2017. A verification inspection by the contractor completed on 29th June 2017 confirmed that all the monitors in the site office were reading zero, as per Appendix 3.
3.3 Historic Monitoring Record 3.3.1 Appendix 4 shows Quarter 1, 2018 landfill gas monitoring results for this quarter
in comparison with historical results for the previous six quarters. Please note that a full record of all previous monitoring results is retained by Murphy Environmental, in the form of the ‘Gas Monitoring Database’, which is updated on a bi-annual basis.
2 The landfill gas emission limit values, measured in any building on or adjacent to the facility, as prescribed under Schedule C.2 of EPA licence W0151-01, are: 20% LEL/1% v/v Methane and 1.5% v/v Carbon Dioxide. 3 Note: CO2 results in excess of the trigger level of 1.5% v/v (Schedule C of Waste Licence W0151-01) are highlighted
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Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Chapter
4
4.0 Conclusion and Recommendations
4.1 Results for Q1, 2018 4.1.1 Full gas monitoring results for Quarter 1, 2018 are included in Chapter 3 and
Appendix 2 of this report. 4.1.2 Methane breached the relevant licence limit4 at 1 No. monitoring location 4.1.3 Carbon dioxide exceeded the trigger level at 2 No. locations outside of the body of
waste (G-12 and G-14). However, none of the locations where elevated CO2 gas concentrations were measured are in any building on or adjacent to the facility.
4.1.4 The continuous gas monitors/alarm in the site office were serviced during Quarter
2, 2017; all the monitors in the site office were reading zero.
4.2 Incident, Q1, 2018 4.2.1 Carbon dioxide exceeded the trigger level at 2 No. locations outside of the body of
waste (G-12 and G-14). However, none of the locations where elevated CO2 gas concentrations were measured are in any building on or adjacent to the facility.
4.2.2 Low levels of CO2 at perimeter monitoring wells, as per monitoring results for
Quarter 1, 2018, do not indicate a significant environmental impact. There is no indication of landfill gas migration from the W0151-01 facility as confirmed by the Landfill Gas Risk Assessment (ref: Landfill Gas Risk Assessment, Risk Screening, in October 2017). No corrective actions are deemed necessary.
4.3 Recommendations 4.3.1 The licensee is required to complete ongoing landfill gas monitoring in line with
licensing requirements.
4 The landfill gas emission limit values, measured in any building on or adjacent to the facility, as prescribed under Schedule C.2 of EPA licence W0151-01, are: 20% LEL/1% v/v Methane and 1.5% v/v Carbon Dioxide.
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Appendix
1
Appendix 1: Calibration Certificate for Gas Meter
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Appendix
2
Appendix 2: Field Monitoring Records
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EPA Export 12-05-2018:04:27:04
Gas Monitoring Records Q1, 2018
Client: Murphy Environmental Site & Licence: Gormanston W0151-01
Date: 20/02/2018 Time: All Day
Project No.: MU0122 Consultant: KF & MON
Instrument: GA5000 Calibration Due: March 2018
Weather Conditions: Dry, calm, overcast day, with a max temperature of 6.3oC
Monitoring Location
CH4 (% v/v)
CO2 (% v/v)
O2 (% v/v)
Barometric Pressure
Comments
WIT
HIN
TH
E FA
CIL
ITY
G-6 0.0 0.1 21.1 1025 mB
G-7 0.0 0.1 21.8 1026 mB
G-8 0.0 0.1 21.5 1025 mB
G-9 0.0 0.1 21.5 1030 mB
G-11 0.0 3.0 16.5 1024 mB
L-1 0.0 0.1 21.4 1025 mB
L-2 0.0 0.7 20.0 1025 mB
L-3 20.6 3.6 14.8 1025 mB
L-4 0.0 0.1 21.7 1026 mB
OU
TSID
E W
AS
TE B
OD
Y
G-12 0.0 6.1 13.2 1026 mB
G-14 0.0 2.7 16.4 1025 mB
G-15 0.0 0.1 21.6 1026 mB
G-16 0.0 0.1 20.6 1025 mB
G-17 0.0 0.1 20.9 1026 mB
G-18 0.0 0.1 21.2 1026 mB
G-19 0.0 0.2 21.3 1027 mB
MW-17 0.0 0.4 20.6 1026 mB
MW-19 0.0 0.1 21.6 1026 mB
MW-20 No Access
MW-21 0.0 0.1 20.8 1025 mB
Comments/Observations
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Appendix
3
Appendix 3: Site Office Meter Test Certificate
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EPA Export 12-05-2018:04:27:04
MURPHY ENV.S2107GormanstownGormanstown, Dublin
CSLDeerpark Business ComplexDublin Road, CarlowIrelandTel: 353 (0)59 914 3464
SCHEDULED JOB LEAD CREW
29/06/2017 09:00 Caleb Roche
J12897.1JOB DETAILS Job is Completed
JOB TYPE: Gas Detection Service CUSTOMER ORDER NUMBER: LisaMurphy
JOB DESCRIPTION
Yearly Gas Detection Service
WORK DETAILSNAME DESCRIPTION QTY
Panel Location
Notes: Cabin at weight bridge
Gas Sheet
ATTACHMENTS
gas detection calibration.pdf
Notes: See attached gas sheet
Comments/Recommendations
Notes: Calibrated sensors and checked alarms. Replaced batteries in panel
Parts Used Part Number
Notes: Batteries for gasmaster
E01875 Gasmaster Backup Battery - 12v1.2Ah [Pack of 2] Crowcon Gasmaster Backup Battery 1
Parts Required
Notes: No parts required
Work Completed
Notes: Completed
JOB - J12897.1
CSLTel: 353 (0)59 914 3464
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None
POST SIGNATURE
Name of signee: Lisa murphy
JOB - J12897.1
CSLTel: 353 (0)59 914 3464
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Appendix
3
Appendix 4: Historical Gas Monitoring Results, W0151-01
Methane, CH4 (% v/v)
Borehole ID Q1, 2018
Q4, 2017
Q3, 2017
Q1, 2017
Q3, 2016
Q2, 2016
Q3, 2015
Insi
de
Faci
lity
G-6 0.0 0.0 0.0 0.0 0.7 0.0 0.2
G-7 0.0 0.0 0.0 0.0 0.2 - -
G-8 0.0 0.0 0.0 0.0 0.1 15.8 0.2
G-9 No Access 0.0 0.0 0.0 0.1 0.0 0.2
G-11 0.0 0.0 0.0 0.0 0.2 0.0 0.1
L-1 0.0 0.0 0.0 0.0 0.3 0.0 0.2
L-2 0.0 0.0 4.3 0.0 0.1 0.0 0.2
L-3 20.6 0.0 22.0 14.4 1.1 1.4 0.1
L-4 0.0 0.0 12.6 0.0 0.0 0.0 0.3
Ou
tsid
e W
aste
Bo
dy
G-12 0.0 0.0 0.0 0.0 0.0 0.0 0.2
G-14 0.0 0.0 0.0 0.0 0.0 0.0 0.2
G-15 0.0 0.0 0.0 0.0 0.0 0.0 0.1
G-16 0.0 0.0 0.0 0.0 0.1 0.0 0.1
G-17 0.0 0.0 0.0 0.0 0.1 0.0 0.1
G-18 0.0 0.0 0.0 0.0 0.0 0.0 0.2
G-19 0.0 0.0 0.0 0.0 - 0.0 0.2
MW-17 0.0 0.0 0.0 0.0 0.0 0.0 0.2
MW-19 0.0 0.0 0.0 0.0 0.1 0.0 0.2
MW-20 No Access 0.0 0.0 0.0 0.0 0.0 0.1
MW-21 0.0 0.0 0.0 0.0 0.1 0.0 0.1
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Appendix
3
Carbon Dioxide, CO2 (% v/v)
Borehole ID Q1,
2018 Q4,
2017 Q3,
2017 Q1,
2017 Q3,
2016 Q2,
2016 Q3,
2015
Insi
de
Faci
lity
G-6 0.1 0.1 0.0 0.1 0.8 1.6 0.1
G-7 0.1 0.1 0.0 0.3 0.0 - -
G-8 0.1 0.1 0.0 0.1 0.8 1.6 0.0
G-9 No
Access 0.1 0.0 0.1 0.0 0.2 0.0
G-11 3.0 1.6 0.1 4.6 0.1 1.5 0.0
L-1 0.1 0.1 0.0 0.1 1.2 0.6 0.0
L-2 0.7 0.1 6.1 0.1 0.4 0.2 0.0
L-3 3.6 1.5 6.2 5.5 2.4 11.7 0.0
L-4 0.1 0.2 3.8 0.1 0.0 0.3 0.0
Ou
tsid
e W
aste
Bo
dy
5
G-12 6.1 4.9 5.8 4.6 0.0 0.2 0.0
G-14 2.7 4.8 4.4 3.4 0.0 0 0.0
G-15 0.1 0.1 0.1 0.1 0.1 0.4 0.0
G-16 0.1 0.9 1.1 0.1 0.0 0.2 0.0
G-17 0.1 2.5 5.2 1.7 1.3 0.3 0.0
G-18 0.1 0.1 0.0 0.9 2.4 1.3 0.0
G-19 0.2 0.1 3.5 2.6 - 1.0 0.0
MW-17 0.4 0.1 0.6 0.4 2.7 4.0 0.0
MW-19 0.1 0.4 4.6 0.1 4.8 6.6 0.0
MW-20 No
Access 4.8 4.9 0.1 0.8 1.2 0.0
MW-21 0.1 3.1 5.0 0.6 0.0 0.2 0.0
5 CO2 results in excess of the trigger level of 1.5% v/v (Schedule C of Waste Licence W0151-01) are highlighted for monitoring locations outside waste body.
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EPA Export 12-05-2018:04:27:04
Murphy Environmental
Landfill Gas Monitoring Report for Gormanston Inert Waste Facility (EPA Licence W0151-01), Quarter 1, 2018
Figure
1
Figure 1: Monitoring Locations
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D3a
D4a
SWD-1
b
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