ICS Ltd
Project / Client Details
AIR & EMISSIONS TESTING
Rainbow Mountain Renewable Energy Limited
Site Address
Site Address
Suite 4
Rainbow Mountain Renewable Energy Limited
21 Railside Place
216 State Highway 38
Dinsdale
Waimangu
Hamilton
New Zealand
Tel: 01355 246 730
Web: www.icsweb.co.nz
Your contact at ICS
Stack/Release Point(s) Tested
Toby Campbell
Wet Electrostatic Precipitator (WESP)
Principal Consultant
Tel: +64 27 380 4824
Target Parameter(s)
Email: [email address]
Dioxins & Furans
PAH
Job Number
Sampling Date(s)
100747
21st August 2024
Report Date / Version:
08/10/24 v1.0
Report By:
Toby Campbell
Business Title
Principal Environmental Consultant
CASANZ Level
Certificate Air Quality Professional (CAQP)
Professional Qualification 1
BSc Environmental Management
Professional Qualification 2
MSc Air Pollution Management and Control
Report Approved By:
Brent Kennedy
Business Title
Principal Scientist
CASANZ Level
Certificate Air Quality Professional (CAQP)
Professional Qualification 1
BSc Chemistry
Professional Qualification 2
MSc Materials and Processing Engineering
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 1 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
CONTENTS
Page Number
TITLE PAGE
1
CONTENTS
2
EXECUTIVE SUMMARY
3
Stack Emission Monitoring Objectives
3
- Plant
- Operator
- Stack Emissions Test House
- Analytical Laboratory (where applicable)
Emissions Summary
4
Monitoring Times
5
Process Details
5
Monitoring Methods
6
- Sampling Methods with Subsequent Analysis
- On-Site Testing
Analytical Methods
7
- Sampling Methods with Subsequent Analysis
- On-Site Testing
Measurement Uncertainty
8
Sampling Location
9
- Sampling Plane Validation Criteria
- Duct Characteristics
- Sampling Lines & Sample Points
- Sampling Platform
- Sampling Location / Platform Improvement Recommendations
Sampling and Analytical Method Deviation
10
Conclusion and Discussion
11
APPENDICES
12
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 2 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 1 of 9)
Stack Emissions Monitoring Objectives
Rainbow Mountain Renewable Energy Limited operates a Anaerobic-Thermal-Reduction (ATR) Pyrolysis at Rainbow
Mountain, 216 State Highway 38, Waimangu which is subject to a Resource Consent, under the Resource Management Act
1991 .
Industrial Compliance Solutions were commissioned by Rainbow Mountain Renewable Energy Limited to carry out stack
emissions monitoring to determine the release of Dioxins & Furans, and PAHs from the following Plant under Normal
operating conditions.
The results of this test shall be used to demonstrate compliance with emission limit values as specified in the Plant's
Resource Consent, RM22-0076-AP.
Plant
Wet Electrostatic Precipitator (WESP)
Operator
Stack Emissions Monitoring Company
Resource Consent: RM22-0076-AP
Industrial Compliance Solutions Ltd
Rainbow Mountain Renewable Energy Limited
Suite 4
216 State Highway 38
21 Railside Place
Waimangu
Dinsdale
New Zealand
Hamilton
Confidentiality Clause
This document and any accompanying attachments are confidential to the intended recipient. The document may contain
information that is subject to legal privilege. The contents may not be passed on or copied in whole or part, for or by any third
party. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and/or publication of this
document or attachments is strictly prohibited.
We accept no responsibility for the consequences of this document being relied upon by any other party, or being used for
any other purpose, or containing any error or omission which is due to an error or omission in data supplied to us by other
parties.
This document contains confidential information and proprietary intellectual property. It should not be shown to other parties
without consent from Industrial Compliance Solutions Ltd and from the party which commissioned it.
This test report shall not be reproduced, except in full, without written approval of Industrial Compliance Solutions Ltd.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 3 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 2 of 9)
Emissions Summary
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21st August 2024
Parameter
Units
Result
Uncertainty
Emission
Outcome
+/-
Limit Value (above/bel
(ELV)
ow ELV)
Dioxins & Furans
ng/m3
0.0516
0.0129
0.1
Below
PAHs
mg/m3
0.0026
0.0006
400
Below
Moisture
%
5.3
1.06
-
-
Stack Gas Temperature
o
<
<
C
36.4
-
-
-
Stack Gas Velocity
m/s
4.4
-
-
-
Gas Volumetric Flow Rate (Actual)
<
<
m³/hr
9049
-
-
-
Gas Volumetric Flow Rate (STP, Wet)
m³/hr
8084
-
-
-
Gas Volumetric Flow Rate (STP, Dry)
<
<
m³/hr
7656
-
-
-
25% uncertainty has been applied to the results due to the na
<
< ture of the testing location.
All: Reference conditions are 273K, 101.3kPa, dry gas.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 4 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 3 of 9)
Monitoring Times and Results - Dioxins & Furans, and PAHs
Run 1
Run 2
Run 3
Sampling
21/08/2024
Date
Sampling
11:34 - 17:34
Times
Dioxins & Furans
PAHs
Run 1
Run 1
Run 1
Run 1
Congener
Congener
ng/m2
g/hr
mg/m3
g/hr
2378-TCDF
0.008830
0.0003904
Naphthalene
0.00171411
0.075790
2378-TCDD
0.007272
0.0003215
2-Methylnaphthalene
0.00006406
0.002833
12378-PeCDF
0.002164
0.0000957
Acenaphthylene
0.00027703
0.012249
23478-PeCDF
0.025106
0.0011101
Acenaphthene
0.00001420
0.000628
12378-PeCDD
0.003290
0.0001455
Fluorene
0.00006579
0.002909
123478-HxCDF
0.001489
0.0000658
Phenanthrene
0.00027703
0.012249
123678-HxCDF
0.001593
0.0000704
Anthracene
0.00000294
0.000130
234678-HxCDF
0.000710
0.0000314
Fluoranthene
0.00005367
0.002373
123789-HxCDF
0.000260
0.0000115
Pyrene
0.00005714
0.002526
123478-HxCDD
0.000173
0.0000077
Benz(a)anthracene
0.00000260
0.000115
123678-HxCDD
0.000242
0.0000107
Chrysene
0.00000571
0.000253
123789-HxCDD
0.000208
0.0000092
Benzo(b)fluoranthene
0.00000467
0.000207
1234678-HpCDF
0.000173
0.0000077
Benzo(k)fluoranthene
0.00000450
0.000199
1234789-HpCDF
0.000035
0.0000015
Benzo(e)pyrene
0.00000502
0.000222
1234678-HpCDD
0.000080
0.0000035
Benzo(a)pyrene
0.00000260
0.000115
OCDF
0.000003
0.0000002
Perylene
0.00000038
0.000017
OCDD
0.000006
0.0000003
Indeno(1,2,3-cd)pyrene
0.00000467
0.000207
Total
0.0516
Dibenz(ah)anthracene
0.00000002
0.000001
Benzo(ghi)perylene
0.00000796
0.000352
Total
0.0026
Process Details
Parameter
Process Details
Process Status
Normal
Capacity and / or Production Rate
10 tonnes per 16 hour cycle
Continuous or Batch Process
Batch
Feedstock (if applicable)
Flock
Abatement System
WESP
Abatement System Running Status
Operational
Fuel (if applicable)
Fuel Oil / Syngas
Plume Appearance
Visible Plume
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 5 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 4 of 9)
Monitoring Methods
Industrial Compliance Solutions Ltd employ USEPA methodologies for stack emissions testing. This section details all of the
methods used on site during this monitoring campaign.
The table below summarises the monitoring methods, techniques and technical procedures employed, and details any
deviations from the aforementioned hierarchy:
Sampling Methods with Subsequent Analysis
Species
Standard Method
ICS
IANZ Lab
IANZ
Limit of
MU of
MU
Technical
Number
Accredited
Detection
Method (E)
+/- %
Procedure
Method
(LOD)
+/- %
Dioxins &
US EPA M23
TMM 2.12
N/A
N/A
~ 0.001 ng/m³
20%
25% (E)
Furans
PAHs
US EPA M23
TMM 2.12
N/A
N/A
~ 0.02 ug/m³
20%
25% (E)
H2O
US EPA M4
TMM 2.4
N/A
N/A
0.1%
20%
-
where C = Calculated Measurement Uncertainty, E = Estimated Measurement Uncertainty
On-Site Testing and Analysis
The table below summarises the monitoring methods, techniques and technical procedures employed:
Species
Standard Method
ICS
IANZ Lab
IANZ
Limit of
MU of
MU
Technical
Number
Accredited
Detection
Method (E)
+/- %
Procedure
Method
(LOD)
+/- %
Sample and
Velocity
US EPA M1
TMM2.1
N/A
N/A
N/A
10%
10%
Traverse
Velocity and
Volumeteric
US EPA M2
TMM2.2
N/A
N/A
0.2 mm H2O
10%
10%
Flow
where C = Calculated Measurement Uncertainty, E = Estimated Measurement Uncertainty
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 6 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 5 of 9)
Analytical Methods
The following tables list the analytical methods employed together with the custody and archiving details:
Sampling Methods with Subsequent Analysis
Species
Analytical Technique
Analytical
Lab
Accredited
Laboratory
Sample
Archive
Procedure
Number
Analysis
Archive
Period
Location
National
Dioxins &
New South
HRGC/HRMS
AUT_MET002
198
NATA
Measurement
3 months
Furans
Wales
Institute
National
New South
PAHs
GC-MS/HPLC
NGCMS_1127
198
NATA
Measurement
3 months
Wales
Institute
H2O
Gravimetric
TMM 2.4
N/A
N/A
ICS
N/A
N/A
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 7 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 6 of 9)
Measurement Uncertainty (MU)
Manual Extractive Testing
There are 4 ways in which to report measurement uncertainty, these are listed in the hierarchical table below. The table also
indicates which method has been used to calculate the MU for the parameters listed in this report.
MU Reported
Yes / No
a) Report a calculated MU
No
b) Report an estimated MU if there are any deviations from the sampling plane validation criteria
Yes
c) Report an estimated MU if there are any deviations from the specified method
Yes
d) Report the MU specified in the method
-
NOTE: The estimated uncertainty is based upon a calculated MU, coupled with the experience of the Stack Emissions Test house.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 8 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 7 of 9)
Sampling Location
Sampling Plane Validation Criteria (Ideal Conditions)
Value
Units
Requirement
Compliance
Method
Lowest Differential Pressure
4
Pa
> 5 Pa
No
TMM2.2
Lowest Gas Velocity
5.48
m/s
-
-
-
Highest Gas Velocity
8.66
m/s
-
-
-
Ratio of Above
1.58
: 1
< 3 : 1
Yes
In-house
Mean Velocity
7.86
m/s
-
-
-
Angle of flow with regard to duct axis
0
o
< 15o
Yes
TMM2.2
No local negative flow
-
-
-
Yes
TMM2.2
Highly homogeneous flow stream / gas velocity
-
-
-
Yes
In-house
Sampling Plane Validation Criteria US EPA M2
Value
Units
Requirement
Compliance
Method
Duct diameters that measurements site is
upstream from flow
Measured
4
> 2 Diameters
Yes
US EPA M1
disturbance
Diameters
Duct diameters that measurements site is
downstream from
Measured
4
> 8 Diameters
No
US EPA M1
flow disturbance
Diameters
Duct Characteristics
Sampling Lines & Sample Points
Parameter
Value
Units
Parameter
TPM
Oxygen
Type
Circular
-
Sample Port Size
4" Camlock
4" Camlock
Depth
0.86
m
Number Used
1
1
Width
-
m
Sample Plane Orientation
Horizontal
-
Area
0.57
m2
Number Points / Line
12
1
Port Depth
483
mm
In Stack / Out Stack Filtration
Out Stack
-
NOTE: 1 sampling line was used for sampling as only 1 sampling line was available,
however the number of sample points was doubled to meet the requirements of the
Sampling Platform
standard.
General Platform Information
Description
Permanent / Temporary Platform
Permanent
Inside / Outside
Outside
Ideal Platfrom Specifications
Present (Yes / No)
Minimum Platform Area 5 m2
Yes
Platform has 2 levels of handrails (approximately 0.5 m & 1.0 m high)
Yes
Platform has vertical base boards (approximately 0.25 m high)
Yes
Platform has removable chains / self closing gates at the top of ladders
N/A
Handrail / obstructions do not hamper insertion of sampling equipment
Yes
Depth of Platform = Minimum of 2m or Probe Length + 1m
Yes
Sampling Location / Platform Improvement Recommendations
Two sample lines should be installed on the stack at 45 degrees relevant to the existing port.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 9 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 8 of 9)
Sampling & Analytical Method Deviations
One Sampling Line
Only 1 sample line was present on the stack.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 10 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
EXECUTIVE SUMMARY (Page 9 of 9)
Conclusion & Discussion
The results of these tests demonstrate that under normal operating conditions, this Plant is being operated in full compliance
with the emission limits specified in its Resource Consent, RM22-0076-AP.
A regular programme of stack emissions testing in accordance with the Plant's Resource Consent, RM22-0076-AP, will be
required to demonstrate continued compliance.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 11 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDICES
CONTENTS
Page Number
CONTENTS
12
APPENDIX 1 - Stack Emissions Monitoring Team
13
APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
14 - 24
Stack Diagram / Plant Layout
14
Equipment Checklist & Calibration Gases
15
Preliminary Stack Survey
16
Metals Summary
17 - 20
Metals Isokinetic Sampling Equations
21 - 23
Metals Quality Assurance Checklist
24
APPENDIX 3 - Measurement Uncertainty Budget Calculations
25
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 12 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDIX 1 - Stack Emissions Monitoring Team
STACK EMISSIONS MONITORING TEAM
Environmental Technician 1
Toby Campbell
Principal Environmental Consultant
Certificate Air Quality Professional (CAQP)
BSc Environmental Management
MSc Air Pollution Management and Control
Environmental Technician 2
Brent Kennedy
Principal Scientist
Certificate Air Quality Professional (CAQP)
BSc Chemistry
MSc Materials and Processing Engineering
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 13 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
STACK PARAMETERS / SAMPLE LOCATION
Value
Units
Gases and Non-Isokinetic Testing
Stack Shape
Circular
-
Stack Depth
0.86
m
Sampling
Distance
Distance into
Units
Stack Width
-
m
Point
(% of Depth)
Stack
Area
0.57
m2
N/A
30
0.26
m
Port Depth (including clamp)
483
mm
Sampling Location
Isokinetic Testing
Sampling
Distance into
Probe
Units
Point
Stack
Marking
1
0.02
0.50
m
2
0.06
0.54
m
3
0.10
0.58
m
4
0.15
0.63
m
5
0.21
0.70
m
6
0.30
0.79
m
7
0.55
1.03
m
8
0.64
1.12
m
9
0.70
1.19
m
10
0.75
1.24
m
11
0.80
1.28
m
12
0.84
1.32
m
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 14 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDIX 2 - Calibrateable Equipment Checklist & Calibration Gases
EQUIPMENT CHECKLIST
Extractive Sampling
Instrumental Analyser/s
Miscellaneous
Equipment
Equipment
Equipment
Equipment
Equipment
Equipment
I.D.
I.D.
I.D.
Control Box DGM
ICS-011
-
-
Laboratory Balance
-
Box Thermocouples
ICS-014 to 018
-
-
Tapemeasure
ICS-032
Meter In Thermocouple
ICS-036
-
-
Stopwatch
TC iPhone
Meter Out Thermocouple
ICS-037
-
-
Protractor
-
Control Box Timer
ICS-019
-
-
Barometer
ICS-044
Umbilical
ICS-031
-
-
Digital Micromanometer
-
Oven Box
ICS-009
-
-
Digital Temperature Meter
-
Probe
ICS-004
-
-
Stack Thermocouple
ICS-005
S-Pitot
ICS-006
-
-
Dioxin Water Pump
ICS-030
L-Pitot
-
-
-
-
-
Site Balance
ICS-026
-
-
-
-
Last Impinger Arm
ICS-028
-
-
-
-
Calipers
ICS-040
-
-
-
-
Small DGM
-
-
-
-
-
Pump CAE
ICS-010
-
-
-
-
Dry Gas Meter Orifice
ICS-012
-
-
-
-
Vacuum Gauge
ICS-013
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
NOTE: If the equipment I.D is represented by a dash (-), then this piece of equipment has not been used for this test.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 15 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
PRELIMINARY STACK SURVEY
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21st August 2024
Time of Survey
10:30 - 10:45
Velocity Measurement Device:
S-Type Pitot
Sampling Line A
Traverse
Distance
D
P pt
D
P pt
Temp
Velocity
O2
Angle
o
Point
into
mmH
C
2O
Pa
m/s
%
of Swirl
duct (m)
Vol
o
1
0.02
0.4
4
20
5.48
-
0
2
0.06
0.6
6
20
6.71
-
3
0.10
1.0
10
20
8.66
-
4
0.15
1.0
10
20
8.66
-
5
0.21
1.0
10
20
8.66
-
6
0.30
1.0
10
20
8.66
-
7
0.55
1.0
10
20
8.66
-
8
0.64
1.0
10
20
8.66
-
9
0.70
0.8
8
20
7.75
-
10
0.75
0.6
6
20
6.71
-
0
Mean
-
0.8
8
20
7.86
-
Sampling Line B
Traverse
Distance
D
P pt
D
P pt
Temp
Velocity
O2
Angle
o
Point
into
mmH
C
2O
Pa
m/s
%
of Swirl
duct (m)
Vol
o
1
-
-
-
-
-
-
0
2
-
-
-
-
-
-
3
-
-
-
-
-
-
4
-
-
-
-
-
-
5
-
-
-
-
-
-
6
-
-
-
-
-
-
7
-
-
-
-
-
-
8
-
-
-
-
-
-
9
-
-
-
-
-
-
10
-
-
-
-
-
-
0
Mean
-
-
-
-
-
-
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 16 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
DIOXINS & FURANS SUMMARY - RUN 1
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21-Aug-24
Test
Sampling Times
Duration
min
Dioxins & Furans
11:34 - 17:34
360
Reference conditions are 273K, 101.3kPa, dry gas.
50% of LOD has been taken where the laboratory result is "<" a quoted value. This data is highlighted in "Green"
International
Concentration
Toxic
Laboratory
iTEF Mass
Mass
Congener
Equivalence
Results (pg)
(pg) (Humans)
Emission g/hr
Factor
ng/m3
(Humans)
2378-TCDF
510.0
0.100
51.0
0.00883
0.0003904
2378-TCDD
42.0
1.000
42.0
0.00727
0.0003215
12378-PeCDF
250.0
0.050
12.5
0.00216
0.0000957
23478-PeCDF
290.0
0.500
145.0
0.02511
0.0011101
12378-PeCDD
38.0
0.500
19.0
0.00329
0.0001455
123478-HxCDF
86.0
0.100
8.6
0.00149
0.0000658
123678-HxCDF
92.0
0.100
9.2
0.00159
0.0000704
234678-HxCDF
41.0
0.100
4.1
0.00071
0.0000314
123789-HxCDF
15.0
0.100
1.5
0.00026
0.0000115
123478-HxCDD
10.0
0.100
1.0
0.00017
0.0000077
123678-HxCDD
14.0
0.100
1.4
0.00024
0.0000107
123789-HxCDD
12.0
0.100
1.2
0.00021
0.0000092
1234678-HpCDF
100.0
0.010
1.0
0.00017
0.0000077
1234789-HpCDF
20.0
0.010
0.2
0.00003
0.0000015
1234678-HpCDD
46.0
0.010
0.5
0.00008
0.0000035
OCDF
20.0
0.001
0.0
0.00000
0.0000002
OCDD
33.0
0.001
0.0
0.00001
0.0000003
Total
1619.0
-
298.2
0.05163
0.0023
<
<
<
<
<
< *
<
<
< <
<
< *
<
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 17 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPEN
<
DIX
< 2 - Su
<
mmaries, Calculati
< ons, Raw
<
<
Da
*
ta and Ch
<
<
arts< <
<
< *
<
DIOXINS & FURANS SUMMARY - BLANK
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21-Aug-24
Test
Sampling Times
Duration
min
Dioxins & Furans
11:04 - 11:08
4
Reference conditions are 273K, 101.3kPa, dry gas.
50% of LOD has been taken where the laboratory result is "<" a quoted value. This data is highlighted in "Green"
International
Toxic
Concentration
Laboratory
iTEF Mass
Mass
Congener
Equivalence
Results (pg)
(pg) (Humans)
Emission g/hr
Factor
ng/m3
(Humans)
2378-TCDF
<2
0.100
1.0
0.00017
0.0000077
2378-TCDD
<8
1.000
4.0
0.00069
0.0000306
12378-PeCDF
<1
0.050
0.5
0.00009
0.0000038
23478-PeCDF
<1
0.500
0.5
0.00009
0.0000038
12378-PeCDD
<7
0.500
3.5
0.00061
0.0000268
123478-HxCDF
<0.5
0.100
0.3
0.00004
0.0000019
123678-HxCDF
<0.5
0.100
0.3
0.00004
0.0000019
234678-HxCDF
<0.5
0.100
0.3
0.00004
0.0000019
123789-HxCDF
<0.5
0.100
0.3
0.00004
0.0000019
123478-HxCDD
<1
0.100
0.5
0.00009
0.0000038
123678-HxCDD
<1
0.100
0.5
0.00009
0.0000038
123789-HxCDD
<1
0.100
0.5
0.00009
0.0000038
1234678-HpCDF
<1
0.010
0.5
0.00009
0.0000038
1234789-HpCDF
<1
0.010
0.5
0.00009
0.0000038
1234678-HpCDD
<1
0.010
0.5
0.00009
0.0000038
OCDF
<1
0.001
0.5
0.00009
0.0000038
OCDD
<2
0.001
1.0
0.00017
0.0000077
Total
0.0
-
15.0
0.00260
0.0001
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 18 of 24
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
PAHs SUMMARY - RUN 1
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21-Aug-24
Test
Sampling Times
Duration
min
PAHs
11:34 - 17:34
360
Reference conditions are 273K, 101.3kPa, dry gas.
50% of LOD has been taken where the laboratory result is "<" a quoted value. This data is highlighted in "Green"
Concentration
Laboratory
Laboratory
Mass
Congener
Results (ng)
Results (µg)
Emission g/hr
mg/m3
Naphthalene
9900000.0
9.9000
0.00171411
0.0757899
2-Methylnaphthalene
370000.0
0.3700
0.00006406
0.0028326
Acenaphthylene
1600000.0
1.6000
0.00027703
0.0122489
Acenaphthene
82000.0
0.0820
0.00001420
0.0006278
Fluorene
380000.0
0.3800
0.00006579
0.0029091
Phenanthrene
1600000.0
1.6000
0.00027703
0.0122489
Anthracene
17000.0
0.0170
0.00000294
0.0001301
Fluoranthene
310000.0
0.3100
0.00005367
0.0023732
Pyrene
330000.0
0.3300
0.00005714
0.0025263
Benz(a)anthracene
15000.0
0.0150
0.00000260
0.0001148
Chrysene
33000.0
0.0330
0.00000571
0.0002526
Benzo(b)fluoranthene
27000.0
0.0270
0.00000467
0.0002067
Benzo(k)fluoranthene
26000.0
0.0260
0.00000450
0.0001990
Benzo(e)pyrene
29000.0
0.0290
0.00000502
0.0002220
Benzo(a)pyrene
15000.0
0.0150
0.00000260
0.0001148
Perylene
2200.0
0.0022
0.00000038
0.0000168
Indeno(1,2,3-cd)pyrene
27000.0
0.0270
0.00000467
0.0002067
Dibenz(ah)anthracene
<200
0.0001
0.00000002
0.0000008
Benzo(ghi)perylene
46000.0
0.0460
0.00000796
0.0003522
Total
-
14.8
0.00256
0.1134
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Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 19 of 24
21st August 2024
WESP
Resource Consent: RM22-0076-AP
APPEN
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DIX
< 2 - Su
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mmaries, Calculati
< ons, Raw
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Da
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PAHs SUMMARY - BLANK
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
21-Aug-24
Test
Sampling Times
Duration
min
PAHs
11:04 - 11:08
4
Reference conditions are 273K, 101.3kPa, dry gas.
50% of LOD has been taken where the laboratory result is "<" a quoted value. This data is highlighted in "Green"
Concentration
Laboratory
Laboratory
Mass
Congener
Results (ng)
Results (µg)
Emission g/hr
mg/m3
Naphthalene
1200.0
1.200
0.000208
0.0091867
2-Methylnaphthalene
160.0
0.160
0.000028
0.0012249
Acenaphthylene
<20
0.010
0.000002
0.0000766
Acenaphthene
<20
0.010
0.000002
0.0000766
Fluorene
<20
0.010
0.000002
0.0000766
Phenanthrene
1500.0
1.500
0.000260
0.0114833
Anthracene
140.0
0.140
0.000024
0.0010718
Fluoranthene
260.0
0.260
0.000045
0.0019904
Pyrene
130.0
0.130
0.000023
0.0009952
Benz(a)anthracene
<20
0.010
0.000002
0.0000766
Chrysene
<20
0.010
0.000002
0.0000766
Benzo(b)fluoranthene
<20
0.010
0.000002
0.0000766
Benzo(k)fluoranthene
<20
0.010
0.000002
0.0000766
Benzo(e)pyrene
<20
0.010
0.000002
0.0000766
Benzo(a)pyrene
<20
0.010
0.000002
0.0000766
Perylene
<20
0.010
0.000002
0.0000766
Indeno(1,2,3-cd)pyrene
<20
0.010
0.000002
0.0000766
Dibenz(ah)anthracene
<20
0.010
0.000002
0.0000766
Benzo(ghi)perylene
<20
0.010
0.000002
0.0000766
Total
-
3.5
0.00061
0.02695
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 20 of 24
21st August 2024
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Resource Consent: RM22-0076-AP
APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
ISOKINETIC SAMPLING EQUATIONS 1
Dioxins & Furans, and PAHs
Test
1
2
3
Units
Absolute pressure of stack gas, Ps
Barometric pressure, Pb
769.5
mm Hg
Stack static pressure, Pstatic
0.2
mm H2O
Ps = Pb + (Pstatic)
769.5
mm Hg
13.6
Volume of water vapour collected, Vwstd
Impinger volume collected
229.8
ml
Silica gel weight increase
30.9
g
Total volume of liquid collected, Vlc
260.7
ml
Vwstd = (0.001246)(Vlc)
0.3233
m³
Volume of gas metered dry, Vmstd
Volume of gas sample through gas meter, Vm
5.9649
m³
Gas meter correction factor, Yd
1.015
-
Average dry gas meter temperature, Tm
17.5
oC
Average pressure drop across orifice, DH
28.6
mm H2O
Vmstd = (0.3592)(Vm)(Pb+(DH/13.6))(Yd)
5.7756
m³
Tm + 273
Volume of gas metered wet, Vmstw
Vmstw = Vmstd + Vwstd
6.0989
m³
Volume of gas metered at O2 Ref. Cond., Vmstd@X%O2
% oxygen measured in gas stream, act%O2
18.0
%
% oxygen reference condition
(21.0 denotes no O2 correction)
21.0
%
O2 Reference Factor
O2 Ref = 21.0 - act%O2
No O2 Ref
21.0 - ref%O2
Vmstd@X%oxygen = (Vmstd) (O2 Ref)
No O2 Ref
m³
Moisture content, Bwo
Bwo = Vwstd
0.053
m³
Vmstd + Vwstd
5.30
%
Molecular weight of dry gas stream, Md
CO2
2.5
%
O2
18.0
%
Total
20.5
%
N2 (100 -Total)
79.5
%
Md = 0.44(%CO2)+0.32(%O2)+0.28(%N2)
29.12
g/gmol
Molecular weight of stack gas (wet), Ms
Ms = Md(1 - Bwo) + 18(Bwo)
28.53
g/gmol
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 21 of 24
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
ISOKINETIC SAMPLING EQUATIONS 2
Dioxins & Furans, and PAHs
Test
1
2
3
Units
Velocity of stack gas, Vs
Pitot tube velocity constant, Kp
34.97
-
Velocity pressure coefficient, Cp
0.84
-
Average stack gas temperature, Ts
36
oC
Vs = (Kp)(Cp)(DP)(Ts + 273)
4.38
m/s
(Ms)(Ps)
Vs corrected for angle of swirl
4.38
m/s
Actual flow of stack gas, Qa
Area of stack, As
0.57
m²
Qa = (60)(As)(Vs)
150.8
m³/min
9049.3
m³/hr
Dry total flow of stack gas, Qstd
Conversion factor (K/mm.Hg)
0.3592
-
Qstd = (Qa)Ps(0.3592)(1-Bwo)
127.6
m³/min
(Ts) +273
7656
m³/hr
Dry total flow of stack gas, at O2 Ref. Cond., Qstd@X%O2
% oxygen measured in gas stream, act%O2
18.0
%
% oxygen reference condition
(21.0 denotes no O2 correction)
21.0
%
O2 Reference Factor
O2 Ref = 21.0 - act%O2
No O2 Ref
21.0 - ref%O2
Qstd@X%O2 = (Qstd) (O2 Ref)
No O2 Ref
m³/min
Wet total flow of stack gas, Qstw
Conversion factor (K/mm.Hg)
0.3592
-
Qstw = (Qa)Ps(0.3592)
134.7
m³/min
(Ts) +273
8084
m³/hr
Percent isokinetic, %I
Nozzle diameter, Dn
9.28
mm
Nozzle area, An
67.64
mm²
Total sampling time, q
360
min
%I = (4.6398E6)(Ts+273)(Vmstd)
106.7
%
(Ps)(Vs)(An)(q)(1-Bwo)
Acceptable isokinetic range 90% to 110%"
Yes
-
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 22 of 24
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
DIOXINS & FURANS AND PAHs QUALITY ASSURANCE CHECKLIST
Leak Test Results
Value
Value
Value
Units
Run 1
Run 2
Run 3
Mean Sampling Rate
16.8
litre/min
Pre-sampling Leak Rate
0.16
litre/min
Post-sampling Leak Rate
0.19
litre/min
Acceptable Leak Rate (2% of sample rate)
0.34
litre/min
Leak Tests Acceptable?
Yes
-
Overall Blank Value
Dioxins &
Units
Units
PAHs
Furans
Run 1
Run 1
Overall Blank Value
0.0026
ng/m³
0.0006
mg/m³
Emission Limit Value (ELV)
0.1
ng/m³
400.0
mg/m³
Acceptable Blank Value (10% of ELV)
0.01
mg/m³
40.0
mg/m³
Overall Blank Acceptable?
Yes
-
Yes
-
Isokinetic Criterion Compliance
Value
Value
Value
Units
Run 1
Run 2
Run 3
Isokinetic Variation
106.7
%
Acceptable Isokineticity?
Yes
-
(between 90% and 110%)
Acceptable isokinetic range 90% to 110%"
Total Particulate Matter Filters
Value
Value
Value
Units
Run 1
Run 2
Run 3
Filter Material
GF
-
Filter Size
82
mm
GF = Glass Fibre
QF = Quartz Fibre
<
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Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 23 of 24
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APPENDIX 4 - Measurement Uncertainty Budget Calculations <
<
MEASUREMENT UNCERTAINTY BUDGET - DIOXINS & FURANS
Value
Units
Limit value
0.1
ng/m³
Measured concentration
0.0516
ng/m³
Reference oxygen
N/A
% by volume
Measured Quantities
Symbol
Value
Units
Sampled Volume
Vm
5.8
m³
Sampled Gas Temperature
T
NOTE: Sampled Gas
m
309.4
K
Temperature, Pressure and
Sampled Gas Pressure
ρm
102.6
KPa
Humidity are at the Dry Gas
Sampled Gas Humidity
Hm
0.0
% by volume
Meter.
Oxygen Content
O2,m
18.0
% by volume
Mass of D&F
m
0.3
ng
Leak
L
1.1
%
Uncollected Mass
UCM
0.02
pg
Standard Uncertainty
Symbol
Value
Units
Uncertainty
Uncertainty
Uncertainty
as a %
Required
Met?
Sampled Volume
uVm
0.1155
m³
2.0
< 2%
Yes
Sampled Gas Temperature
uTm
3.0942
K
1.0
< 1%
Yes
Sampled Gas Pressure
uρm
1.0260
KPa
1.0
< 1%
Yes
Sampled Gas Humidity
uHm
0.0000
% by volume
0.0
< 1%
Yes
Oxygen Content
uO2,m
0.7497
% by volume
4.2
< 10%
Yes
Total Mass of D&F
um
0.0010
ng
0.3
< 5% of ELV
Yes
Leak
-
-
-
1.1
< 2%
Yes
Uncollected Mass
-
-
-
6.7
< 10% of ELV
Yes
Parameter
Symbol
Value
Units
Uncertainty
Units
Uncertainty
Units
in Result
as a %
Volume (STP)
V
5.1613
m³
0.0014
ng/m³
2.65
%
Total Mass of D&F
m
0.2982
ng
0.0002
ng/m³
0.34
%
Factor for O2 Correction
fc
1.0000
-
0.0022
ng/m³
4.16
%
Leak
L
0.0003
ng/m³
0.0003
ng/m³
0.65
%
Uncollected mass
UCM
0.0087
ng
0.0015
ng/m³
2.90
%
Combined uncertainty
0.0030
ng/m³
5.77
%
R1 - Uncertainty expressed at a 95% confidence level (where k = 2)
0.006
ng/m³
11.55
%
(k is a coverage factor which gives a 95% confidence in the quoted figures)
NOTE: Because there are one or more method deviations from , a calculated MU can not be quoted for the concentration or mass emission of total particulate
matter. Instead, this figure may be used to make a best estimate of what the MU might be.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 24 of 24
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