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]
Metals
Job Number
Sampling Date(s)
100747
10th July 2024
Report Date / Version:
04/09/24 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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 Metals from the following Plant under Normal operating conditions.
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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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EXECUTIVE SUMMARY (Page 2 of 9)
Emissions Summary
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
10th July 2024
Parameter
Units
Result 
Uncertainty
Emission 
Outcome 
(average of 
+/-
Limit Value  (above/below 
3 runs)
(ELV)
ELV)
Antimony
mg/m3
0.0009
0.0002
0.055
Below
Arsenic
mg/m3
0.0049
0.0012
0.005
Below
Barium
mg/m3
0.0062
0.0016
-
-
Beryllium
mg/m3
0.0009
0.0002
-
-
Boron
mg/m3
0.0521
0.0130
-
-
Cadmium
mg/m3
0.0004
0.0001
0.00875
Below
Chromium
mg/m3
0.0110
0.0028
0.01
Above
Cobalt
mg/m3
0.0009
0.0002
0.005
Below
Copper
mg/m3
0.0103
0.0026
0.065
Below
Lead
mg/m3
0.0137
0.0034
0.295
Below
Manganese
mg/m3
0.0469
0.0117
0.055
Below
Nickel
mg/m3
0.0155
0.0039
0.005
Above
Phosphorus
mg/m3
1.3331
0.3333
-
-
Selenium
mg/m3
0.0049
0.0012
-
-
Thallium
mg/m3
0.00005
0.00001
0.00125
Below
Tin
mg/m3
0.0119
0.0030
-
-
Vanadium
mg/m3
0.0049
0.0012
0.005
Below
Zinc
mg/m3
0.1666
0.0416
-
-
Mercury
mg/m3
0.0160
0.0040
0.05
Below
Moisture 
%
2.9
0.57
-
-
Stack Gas Temperature
oC
24.8
-
-
-
Stack Gas Velocity
m/s
3.8
-
-
-
Gas Volumetric Flow Rate (Actual)  
m³/hr
7858
-
-
-
Gas Volumetric Flow Rate (STP, Wet) 
m³/hr
7321
-
-
-
Gas Volumetric Flow Rate (STP, Dry) 
m³/hr
7107
-
-
-
Al  results are average values of 3 sample runs, with pollutant concentrations expressed at reference conditions.
25% uncertainty has been applied to the Metals results due to the nature of the testing.
Metals: Reference conditions are 273K, 101.3kPa, dry gas.
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 4 of 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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EXECUTIVE SUMMARY (Page 3 of 9)
Monitoring Times and Results
Run 1
Run 2
Run 3
Sampling 
Date
10/07/2024
10/07/2024
10/07/2024
Sampling 
Times
09:08 - 10:08 11:24 - 12:24 13:16 - 14:16
Concentration
Mass Emissions
Run 1
Run 2
Run 3
Run 1 
Run 2 
Run 3 
Parameter
mg/m3
mg/m3
mg/m3
g/hr
g/hr
g/hr
Antimony
0.00113
0.00082
0.00082
0.0069
0.0066
0.01
Arsenic
0.00596
0.00436
0.00436
0.0366
0.0351
0.04
Barium
0.00993
0.00436
0.00436
0.0610
0.0351
0.04
Beryllium
0.00113
0.00082
0.00082
0.0069
0.0066
0.01
Boron
0.08076
0.03780
0.03780
0.4965
0.3045
0.30
Cadmium
0.00026
0.00040
0.00040
0.0016
0.0032
0.00
Chromium
0.01655
0.00824
0.00824
0.1017
0.0664
0.07
Cobalt
0.00113
0.00082
0.00082
0.0069
0.0066
0.01
Copper
0.01258
0.00921
0.00921
0.0773
0.0742
0.07
Lead
0.02132
0.00989
0.00989
0.1310
0.0796
0.08
Manganese
0.03310
0.05379
0.05379
0.2035
0.4333
0.43
Nickel
0.01655
0.01502
0.01502
0.1017
0.1210
0.12
Phosphorus
1.74104
1.12918
1.12918
10.7035
9.0962
9.10
Selenium
0.00596
0.00436
0.00436
0.0366
0.0351
0.04
Thallium
0.00006
0.00004
0.00004
0.0004
0.0004
0.00
Tin
0.01920
0.00824
0.00824
0.1180
0.0664
0.07
Vanadium
0.00596
0.00436
0.00436
0.0366
0.0351
0.04
Zinc
0.17212
0.16380
0.16380
1.0581
1.3195
1.32
Mercury
0.04
0.01
0.003
0.22
0.06
0.02
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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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)
+/- %
Metals
US EPA M29
TMM 2.14
N/A
N/A
~ 0.0001 mg/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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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
IANZ Lab
IANZ
Laboratory
Sample
Archive
Procedure
Number
Accredited
Archive
Period
Analysis
Location
Metals
ICP-MS
TMM 2.14
N/A
N/A
ICS
Hamilton
3 months
H2O 
Gravimetric
TMM 2.4
N/A
N/A
ICS
Hamilton
3 months
Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 7 of 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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EXECUTIVE SUMMARY (Page 6 of 9)
Measurement Uncertainty (MU)
Manual Extractive Testing
There are 4 ways in which to report measurement uncertainty for total particulate matter. 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
-
b) Report an estimated MU if there are any deviations from the sampling plane validation criteria
-
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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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EXECUTIVE SUMMARY (Page 7 of 9)
Sampling Location
Sampling Plane Validation Criteria (Ideal Conditions)
Value
Units
Requirement Compliance
Method
Lowest Differential Pressure
10
Pa
> 5 Pa
Yes
In-house
Lowest Gas Velocity
3.35
m/s
-
-
-
Highest Gas Velocity
4.24
m/s
-
-
-
Ratio of Above
1.26
: 1
< 3 : 1
Yes
In-house
Mean Velocity
3.65
m/s
-
-
-
Angle of flow with regard to duct axis
0
o
 < 15o 
Yes
In-house
No local negative flow
-
-
-
Yes
In-house
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 
4
Measured 
disturbance 
Diameters
> 2 Diameters
Yes
US EPA M1
Duct diameters that measurements site is downstream from 
Measured 
flow disturbance 
4
> 8 Diameters
No
US EPA M1
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
Sampling Platform
number of sample points was doubled to meet the requirements of the 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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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
Calibrateable 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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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 
Units
Probe Marking
Point
Stack
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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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APPENDIX 2 - Calibrateable Equipment Checklist & Calibration Gases
CALIBRATEABLE EQUIPMENT CHECKLIST
Extractive Sampling
Instrumental Analyser/s
Miscellaneous
Equipment
Equipment 
Equipment
Equipment  Equipment
Equipment 
I.D.
I.D.
I.D.
Control Box DGM
ICS011
-
-
Laboratory Balance
-
Box Thermocouples
Y
-
-
Tapemeasure
Y
Meter In Thermocouple
Y
-
-
Stopwatch
Y
Meter Out Thermocouple
Y
-
-
Protractor
-
Control Box Timer
Y
-
-
Barometer
Y
Umbilical
Y
-
-
Digital Micromanometer
-
Oven Box
ICS009
-
-
Digital Temperature Meter
-
Probe
ICS004
-
-
Stack Thermocouple
ICS005
S-Pitot
ICS006
-
-
-
-
L-Pitot
-
-
-
-
-
Site Balance
Y
-
-
-
-
Last Impinger Arm
Y
-
-
-
-
Calipers
Y
-
-
-
-
Small DGM
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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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)
10th July 2024
Time of Survey
08:25 - 08:35
Velocity Measurement Device:
S-Type Pitot
Sampling Line A
Traverse
Distance 
∆P pt
∆P pt
Temp
Velocity
O2
Angle
Point
into
mmH2O
Pa
oC
m/s
%
of Swirl
duct (m)
Vol
o
1
0.02
1.0
10
21
3.35
-
0
2
0.06
1.0
10
21
3.35
-
3
0.10
1.0
10
21
3.35
-
4
0.15
1.0
10
21
3.35
-
5
0.21
1.2
12
21
3.67
-
6
0.30
1.2
12
21
3.67
-
7
0.55
1.6
16
21
4.24
-
8
0.64
1.6
16
21
4.24
-
9
0.70
1.4
14
21
3.96
-
10
0.75
1.0
10
21
3.35
-
0
Mean
-
1.2
12
21
3.65
-
Sampling Line B
Traverse
Distance 
∆P pt
∆P pt
Temp
Velocity
O2
Angle
Point
into
mmH2O
Pa
oC
m/s
%
of Swirl
duct (m)
Vol
o
1
-
-
-
-
-
-
0
2
-
-
-
-
-
-
3
-
-
-
-
-
-
4
-
-
-
-
-
-
5
-
-
-
-
-
-
6
-
-
-
-
-
-
7
-
-
-
-
-
-
8
-
-
-
-
-
-
9
-
-
-
-
-
-
10
-
-
-
-
-
-
0
Mean
-
-
-
-
-
-
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
METALS SUMMARY - RUN 1
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
10th July 2024
Test
Sampling Times
Duration
min
Metals
09:08 - 10:08
60
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"
Laboratory 
Run 1
Laboratory 
Run 1
Total Mass
Concentration
Mass 
Metal
Results (µg) 
Results (µg) 
Emission 
Filter/Rinse
Filter/Rinse
Impingers
Impingers
(µg)
mg/m3
g/hr
Antimony
< 0.9
0.5
< 0.8
0.4
0.85
0.00113
0.0069
Arsenic
< 5
2.5
< 4
2.0
4.50
0.00596
0.0366
Barium
< 5
2.5
5.0
5.0
7.50
0.00993
0.0610
Beryllium
< 0.9
0.5
< 0.8
0.4
0.85
0.00113
0.0069
Boron
< 30
15.0
46.0
46.0
61.00
0.08076
0.4965
Cadmium
0.2
0.2
< 0.04
0.0
0.20
0.00026
0.0016
Chromium
11.0
11.0
< 3
1.5
12.50
0.01655
0.1017
Cobalt
< 0.9
0.5
< 0.8
0.4
0.85
0.00113
0.0069
Copper
8.0
8.0
< 3
1.5
9.50
0.01258
0.0773
Lead
11.2
11.2
4.9
4.9
16.10
0.02132
0.1310
Manganese
21.0
21.0
4.0
4.0
25.00
0.03310
0.2035
Nickel
11.0
11.0
< 3
1.5
12.50
0.01655
0.1017
Phosphorus
< 90
45.0
1270.0
1270.0
1315.00
1.74104
10.7035
Selenium
< 5
2.5
< 4
2.0
4.50
0.00596
0.0366
Thallium
< 0.05
0.0
< 0.04
0.0
0.05
0.00006
0.0004
Tin
< 3
1.5
13.0
13.0
14.50
0.01920
0.1180
Vanadium
< 5
2.5
< 4
2.0
4.50
0.00596
0.0366
Zinc
116.0
116.0
14.0
14.0
130.00
0.17212
1.0581
< 0.14
0.07
< 0.8
0.4
Mercury
4.3
4.3
26.770
0.035
0.2179
22.0
22.0
1647
2.180
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
METALS SUMMARY - RUN 2
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
10th July 2024
Test
Sampling Times
Duration
min
Metals
11:24 - 12:24
60
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"
Laboratory 
Run 2
Laboratory 
Run 2
Total Mass
Concentration
Mass 
Metal
Results (µg) 
Results (µg) 
Emission 
Filter/Rinse
Filter/Rinse
Impingers
Impingers
(µg)
mg/m3
g/hr
Antimony
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Arsenic
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Barium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Beryllium
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Boron
< 30
15.0
24.0
24.0
39.00
0.03780
0.3045
Cadmium
0.4
0.4
0.1
0.1
0.41
0.00040
0.0032
Chromium
7.0
7.0
< 3
1.5
8.50
0.00824
0.0664
Cobalt
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Copper
8.0
8.0
< 3
1.5
9.50
0.00921
0.0742
Lead
9.1
9.1
1.1
1.1
10.20
0.00989
0.0796
Manganese
54.0
54.0
< 3
1.5
55.50
0.05379
0.4333
Nickel
14.0
14.0
< 3
1.5
15.50
0.01502
0.1210
Phosphorus
< 90
45.0
1120.0
1120.0
1165.00
1.12918
9.0962
Selenium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Thallium
< 0.05
0.0
< 0.04
0.0
0.05
0.00004
0.0004
Tin
< 3
1.5
7.0
7.0
8.50
0.00824
0.0664
Vanadium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Zinc
152.0
152.0
17.0
17.0
169.00
0.16380
1.3195
< 0.14
0.1
< 0.8
0.4
Mercury
< 0.8
0.4
7.370
0.010
0.0600
6.5
6.5
1509
1.998
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
METALS SUMMARY - RUN 3
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
10th July 2024
Test
Sampling Times
Duration
min
Metals
13:16 - 14:16
60
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"
Laboratory 
Run 3
Laboratory 
Run 3
Total Mass
Concentration
Mass 
Metal
Results (µg) 
Results (µg) 
Emission 
Filter/Rinse
Filter/Rinse
Impingers
Impingers
(µg)
mg/m3
g/hr
Antimony
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Arsenic
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Barium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Beryllium
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Boron
< 30
15.0
24.0
24.0
39.00
0.03780
0.3045
Cadmium
0.4
0.4
0.1
0.1
0.41
0.00040
0.0032
Chromium
7.0
7.0
< 3
1.5
8.50
0.00824
0.0664
Cobalt
< 0.9
0.5
< 0.8
0.4
0.85
0.00082
0.0066
Copper
8.0
8.0
< 3
1.5
9.50
0.00921
0.0742
Lead
9.1
9.1
1.1
1.1
10.20
0.00989
0.0796
Manganese
54.0
54.0
< 3
1.5
55.50
0.05379
0.4333
Nickel
14.0
14.0
< 3
1.5
15.50
0.01502
0.1210
Phosphorus
< 90
45.0
1120.0
1120.0
1165.00
1.12918
9.0962
Selenium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Thallium
< 0.05
0.0
< 0.04
0.0
0.05
0.00004
0.0004
Tin
< 3
1.5
7.0
7.0
8.50
0.00824
0.0664
Vanadium
< 5
2.5
< 4
2.0
4.50
0.00436
0.0351
Zinc
152.0
152.0
17.0
17.0
169.00
0.16380
1.3195
< 0.14
0.1
< 0.8
0.4
Mercury
< 0.8
0.4
2.140
0.003
0.0174
1.3
1.3
1504
1.991
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
METALS SUMMARY - BLANK
Rainbow Mountain Renewable Energy Limited, Rainbow Mountain, 216 State Highway 38, Waimangu
Wet Electrostatic Precipitator (WESP)
10th July 2024
Test
Sampling Times
Duration
min
Metals
N/A
N/A
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"
Laboratory 
Blank
Laboratory 
Blank
Total Mass
Metal
Results (µg) 
Results (µg) 
Filter/Rinse
Filter/Rinse
Filter/Rinse
Impingers
(µg)
Antimony
< 0.9
0.5
< 1.1
0.6
0.450
Arsenic
< 5
2.5
< 6
3.0
2.500
Barium
< 5
2.5
< 6
3.0
2.500
Beryllium
< 0.9
0.5
< 1.1
0.6
0.450
Boron
< 30
15.0
< 40
20.0
15.000
Cadmium
< 0.05
0.0
< 0.06
0.0
0.025
Chromium
< 3
1.5
< 4
2.0
1.500
Cobalt
< 0.9
0.5
< 1.1
0.6
0.450
Copper
< 3
1.5
< 4
2.0
1.500
Lead
< 0.9
0.5
< 1.1
0.6
0.450
Manganese
< 3
1.5
< 4
2.0
1.500
Nickel
< 3
1.5
< 4
2.0
1.500
Phosphorus
< 90
45.0
1300.0
1300.0
1345.000
Selenium
< 5
2.5
< 6
3.0
2.500
Thallium
< 0.05
0.0
< 0.06
0.0
0.025
Tin
< 3
1.5
8.0
8.0
9.500
Vanadium
< 5
2.5
< 6
3.0
2.500
Zinc
< 5
2.5
< 6
3.0
2.500
< 0.14
0.1
< 1.6
0.8
Mercury
< 0.8
0.4
1.3
< 0.08
0.0
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
ISOKINETIC SAMPLING EQUATIONS 1
Metals
Test
1
2
3
Units
Absolute pressure of stack gas, Ps
Barometric pressure, Pb
781.5
781.5
757.5
mm Hg
Stack static pressure, Pstatic
0.2
0.2
0.2
mm H2O
Ps = Pb + (Pstatic)
781.5
781.5
757.5
mm Hg
 13.6
Volume of water vapour col ected, Vwstd
Impinger volume collected
5.8
20.1
25.7
ml
Silica gel weight increase
4.0
4.9
4.2
g
Total volume of liquid col ected, Vlc
9.8
25.0
29.9
ml
Vwstd = (0.001246)(Vlc)
0.0122
0.0310
0.0371
m³
Volume of gas metered dry, Vmstd
Volume of gas sample through gas meter, Vm
0.7476
1.0609
0.9311
m³
Gas meter correction factor, Yd
1.015
1.015
1.015
-
Average dry gas meter temperature, Tm
9.5
20.8
20.8
oC
Average pressure drop across orifice, ∆H 
16.8
30.8
24.7
mm H2O
Vmstd = (0.3592)(Vm)(Pb+(∆H/13.6))(Yd)
0.7553
1.0317
0.8773
m³
        Tm + 273
Volume of gas metered wet, Vmstw
Vmstw = Vmstd + Vwstd
0.7674
1.0627
0.9144
m³
Volume of gas metered at O2 Ref. Cond., Vmstd@X%O2
% oxygen measured in gas stream, act%O2
18.0
17.6
17.0
%
% oxygen reference condition (21.0 denotes no O2 correction)
21.0
21.0
21.0
%
O2 Reference Factor
O2 Ref =        21.0 - act%O2
No O2 Ref
No O2 Ref
No O2 Ref
21.0 - ref%O2
Vmstd@X%oxygen = (Vmstd) (O2 Ref)
No O2 Ref
No O2 Ref
No O2 Ref
m³
Moisture content, Bwo
Bwo =       Vwstd           
0.016
0.029
0.041
m³
Vmstd + Vwstd
1.58
2.92
4.05
%
Molecular weight of dry gas stream, Md
CO2
2.3
2.9
3.1
%
O2
18.0
17.6
17.0
%
Total
20.3
20.5
20.2
%
N2 (100 -Total)
79.7
79.5
79.8
%
Md = 0.44(%CO2)+0.32(%O2)+0.28(%N2) 
29.09
29.16
29.18
g/gmol
Molecular weight of stack gas (wet), Ms
Ms = Md(1 - Bwo) + 18(Bwo)
28.91
28.84
28.73
g/gmol
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
ISOKINETIC SAMPLING EQUATIONS 2
Metals
Test
1
2
3
Units
Velocity of stack gas, Vs
Pitot tube velocity constant, Kp
34.97
34.97
34.97
-
Velocity pressure coefficient, Cp
0.84
0.84
0.84
-
Average stack gas temperature, Ts
20
25
29
oC
Vs = (Kp)(Cp)(√∆P)(√Ts + 273)    
3.16
4.27
3.98
m/s
√(Ms)(Ps)
Vs corrected for angle of swirl
3.16
4.27
3.98
m/s
Actual flow of stack gas, Qa
Area of stack, As
0.57
0.57
0.57
m²
Qa = (60)(As)(Vs)
108.7
147.0
137.2
m³/min
6523.6
8820.6
8229.4
m³/hr
Dry total flow of stack gas, Qstd
Conversion factor (K/mm.Hg)
0.3592
0.3592
0.3592
-
Qstd = (Qa)Ps(0.3592)(1-Bwo)
102.5
134.3
118.6
m³/min
                    (Ts) +273
6148
8056
7118
m³/hr
Dry total flow of stack gas, at O2 Ref. Cond., Qstd@X%O2
% oxygen measured in gas stream, act%O2
18.0
17.6
17.0
%
% oxygen reference condition (21.0 denotes no O2 correction)
21.0
21.0
21.0
%
O2 Reference Factor
O2 Ref =        21.0 - act%O2
No O2 Ref
No O2 Ref
No O2 Ref
21.0 - ref%O2
Qstd@X%O2 = (Qstd) (O2 Ref)
No O2 Ref
No O2 Ref
No O2 Ref
m³/min
Wet total flow of stack gas, Qstw
Conversion factor (K/mm.Hg)
0.3592
0.3592
0.3592
-
Qstw =         (Qa)Ps(0.3592)
104.1
138.3
123.6
m³/min
(Ts) +273
6247
8298
7419
m³/hr
Percent isokinetic, %I
Nozzle diameter, Dn
9.28
9.28
9.28
mm
Nozzle area, An
67.64
67.65
67.65
mm²
Total sampling time, θ
60
60
60
min
%I = (4.6398E6)(Ts+273)(Vmstd)
104.3
108.7
104.6
%
           (Ps)(Vs)(An)(θ)(1-Bwo)
Acceptable isokinetic range 90% to 110%"
Yes
Yes
Yes
-
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
ISOKINETIC SAMPLING EQUATIONS 3
Metals
Test
1
2
3
Units
Particulate Concentration, C
Mass of particulate collected on filter, Mf
0.8500
7.5000
61.0000
g
Mass of particulate collected in probe, Mp
4.5000
0.8500
0.2000
g
Mass of total particulate collected, Mn
5.3500
8.3500
61.2000
g
Cwet = Mn 
6971.15
7857.21
66928.43
mg/m³
     Vmstw
Cdry = Mn 
7083.31
8093.30
69756.82
mg/m³
     Vmstd
Cdry@X%O2 =           Mn 
No O2 Ref
No O2 Ref
No O2 Ref
mg/m³
Vmstd@X%oxygen
Particulate Emission Rates, E
E = [(Cwet)(Qstw)(60)] / 1000 
43546.5
65196.3
496530.4
g/hr
43.547
65.196
496.530
kg/h
Weighing, Conditioning & Filtration Temperatures
Pre-conditioning temperature
105
105
105
oC
Maximum filtration temperature
105
105
105
oC
Post-conditioning temperature
105
105
105
oC
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APPENDIX 2 - Summaries, Calculations, Raw Data and Charts
METALS QUALITY ASSURANCE CHECKLIST
Leak Test Results
Value
Value 
Value 
Units
Run 1
Run 2
Run 3
Mean Sampling Rate
12.6
17.9
15.8
litre/min
Pre-sampling Leak Rate
0.15
0.12
0.09
litre/min
Post-sampling Leak Rate
0.18
0.14
0.10
litre/min
Acceptable Leak Rate
0.25
0.36
0.32
litre/min
Leak Tests Acceptable
Yes
Yes
Yes
-
Overall Blank Value
Value
Units
Run 1
Overall Blank Value
0.0015
mg/m³
Daily Emission Limit Value
-
mg/m³
Acceptable Blank Value
-
mg/m³
Overall Blank Acceptable
-
-
Isokinetic Criterion Compliance
Value
Value 
Value 
Units
Run 1
Run 2
Run 3
Isokinetic Variation
104.3
108.7
104.6
%
Acceptable Isokineticity
Yes
Yes
Yes
-
Acceptable isokinetic range 90% to 110%"
Total Particulate Matter Filters
Value 
Value 
Value 
Units
Run 1
Run 2
Run 3
Filter Material
QF
QF
QF
-
Filter Size
82
82
82
mm
GF = Glass Fibre
QF = Quartz Fibre
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APPENDIX 4 - Measurement Uncertainty Budget Calculations
MEASUREMENT UNCERTAINTY BUDGET - METALS
Value
Units
Limit value
-
mg/m³
Measured concentration
2.2
mg/m³
Reference oxygen
N/A
% by volume
Measured Quantities
Symbol
Value
Units
Sampled Volume
Vm
0.7553
m³
Sampled Gas Temperature
Tm
282
K
NOTE: Sampled Gas Temperature, 
Sampled Gas Pressure
ρm
104.2
KPa
Pressure and Humidity are at the 
Sampled Gas Humidity
H
Dry Gas Meter.
m
0.0
% by volume
Oxygen Content
O2,m  
N/A
% by volume
Mass of Particulate
m
1.6
mg
Leak
L
1.42
%
Uncollected Mass
UCM
0.00
mg
Standard Uncertainty
Symbol
Value
Units
Uncertainty Uncertainty
Uncertainty
as a %
Required
Met?
Sampled Volume
uVm
0.0151
m³
2.0
< 2%
Yes
Sampled Gas Temperature
uTm
3
K
1.0
< 1%
Yes
Sampled Gas Pressure
uρm
1.0420
KPa
1.0
< 1%
Yes
Sampled Gas Humidity
uHm
0.0000
% by volume
0.0
< 1%
Yes
Oxygen Content
uO2,m
N/A
% by volume
N/A
< 10%
N/A
Mass of Particulate
um
0.0001
mg
N/A
< 5% of ELV
N/A
Leak
-
-
-
1.4
< 2%
Yes
Uncollected Mass
-
-
-
N/A
< 10% of ELV
No
Parameter
Symbol
Value
Units
Uncertainty
Units
Uncertainty
Units
in Result
as a %
Volume (STP)
V
0.7509
m³
0.05
mg/m³
2.46
%
Mass of Particulate
m
1.6
mg
0.00
mg/m³
0.01
%
Factor for O2 Correction
fc
N/A
-
0.09
mg/m³
4.16
%
Leak
L
0.02
mg/m³
0.02
mg/m³
0.82
%
Uncollected mass
UCM
0.00
mg
0.00
mg/m³
0.05
%
Combined uncertainty
0.11
mg/m³
4.91
%
R1 - Uncertainty expressed at a 95% confidence level (where k = 2)
0.21
mg/m³
9.81
%
R2 - Uncertainty expressed at a 95% confidence level (where k = 2)
0.08
mg/m³
5.13
%
R3 - Uncertainty expressed at a 95% confidence level (where k = 2)
0.08
mg/m³
5.21
%
(k is a coverage factor which gives a 95% confidence in the quoted figures)
NOTE: Because there are one or more method deviations from US EPA M29, 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 25 of 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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Rainbow Mountain Renewable Energy Limited
ICS 100747
Waimangu
Page 26 of 26
10th July 2024
WESP
Resource Consent: RM22-0076-AP

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Document Outline

• Report

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