Application No: O075-001
Consent No: 204663-V3
Cnr North Road and Pr
ice Street
(Private Ba
g 90116)
In
vercargill
Telephone (03)
211 5115
Fax No. (03)
211 5252
Southland Freephone No. 0800 76 88 45
Air Discharge Permit
Pursuant to Section 105(1) of the Resource Management Act 1991, a resource consent is hereby
granted by the Southland Regional Council to
Open Country Dairy Ltd (the “consent holder”)
of
P O Box 11159, Auckland from
23 October 2007.
History of Transfers
From
Dairy Trust Ltd on
8 January 2009. (Issued 17
December 2007).
Please read this Consent carefully, and ensure that any staff or
contractors carrying out activities under this Consent on your behalf
are aware of all the conditions of the Consent.
Details of Permit
Purpose for which permit is granted:
To discharge contaminants to the air from a milk processing
plant and boiler
Location
- site locality -
Bluff Highway, Waimatua, Awarua
- map reference -
E47:547-024
- receiving environment -
Air
- air shed -
Southland
Legal description of land at the site:
Lot 9 DP 338583
Expiry date:
23 October 2027
Consent Amended
Conditions amended on 28 May 2008, 25 January 2011 and 10
November 2015, as follows:
Schedule of Conditions
1.
This resource consent shall expire on 23 October 2027.
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the Southland Regional Council
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Application No: O075-001
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(Note: Pursuant to Sections 123 and 124 of the Resource Management Act 1991, a new consent wil be
required at the expiration of this consent. The application wil be considered in accordance with the plans in
ef ect at that time, and the adverse ef ects of the proposed activity).
2.
The discharge shall be only combustion products from a coal-fired boiler having a net
energy output capacity of up to 30 megawatts, a milk powder drying plant and associated
processes as described in the application for consent.
3. There shall be no discharge of odour or particulate matter from the coal-fired boiler, the
milk processing plant or any associated activity that is offensive or objectionable beyond
the boundary of the property on which the consent is exercised.
4. The processes resulting in discharges to air shall be operated and maintained using either
the emission control mechanisms as described in the application, or using processes which
provide at least an equivalent level of emission control. Details of any changes shall be
included in the Annual Environmental Report to the Southland Regional Council required
under condition 19.
5.
Differential pressure sensors shall be installed to electronically monitor differential pressure
across all bag filters, and the differential pressure shall be continuously displayed in the
respective control rooms. Any change in differential pressure that may indicate bag filter
failure or malfunction shall be investigated immediately and resulting corrective actions
shall be recorded in the Annual Environment Report required under condition 19.
Coal-Fired Boiler Plant and Associated Facilities
6. (a) The maximum coal burning rate shall be at an equivalent gross energy input of 150
gigajoules per hour.
(b) The maximum gross energy input to the boiler plant during any 24-hour period shall
not exceed 3,000 gigajoules.
(c) The steam production rate shall be automatically measured and recorded at all times
during boiler operation. The gross energy input to the boiler plant shall be
calculated based on the measured steam production rate and the method of
calculation, taking into account boiler efficiency, shall be provided in writing to the
Southland Regional Council. Records of steam output and gross energy input shall
be provided to the Southland Regional Council in accordance with conditions 16 and
19.
7.
Combustion gases from the boiler plant shall be discharged to air via bag filters or via other
emission control equipment as necessary to comply with condition 10.
8.
(a) The discharge to air from the boiler plant shall occur via a stack at a height of at least
52 metres above local ground level. The minimum efflux velocity of exhaust air from
the stack shall be 24 metres per second at the maximum continuous rating of the
boiler.
(b) The discharge to air shall occur at a height at least 21 metres above the roof ridgeline
of all buildings on the consent holder’s property.
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Application No: O075-001
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(c) The discharge shall be directed vertically into air and shall not be impeded by any
obstruction above the stack that decreases the vertical efflux velocity below that
which would occur in the absence of such obstruction.
9.
The opacity of emissions from the chimney stack shall not be darker than Ringelmann
Shade 1 as described in New Zealand Standard 5201:1973 except:
(a) in the case of a cold start for a period not exceeding 30 minutes in the first hour of
operation;
(b) for a period not exceeding a total of two minutes in each succeeding hour of
operation.
10. The discharge of total suspended particulate matter in combustion gases to air from the
boiler stack shall not:
(a) exceed a concentration of total suspended particulate matter, unless the bag filter (or
other equipment providing an equivalent degree of emission control) is being lawfully
bypassed in accordance with Condition 10(b), of 25 milligrams per cubic metre
corrected to 0 degrees Celsius, 101.3 kilopascals, and adjusted to 12 percent carbon
dioxide by volume on a dry gas basis. The mass emission rate shall not exceed 1.3
kilograms per hour;
(b) exceed a concentration of total suspended particulate matter of 500 milligrams per
cubic metre corrected to 0 degrees Celsius, 101.3 kilopascals, and adjusted to 12
percent carbon dioxide by volume on a dry gas basis when the bag filter (or other
equipment providing an equivalent degree of emission control) bypass is being
operated under the following circumstances for the shortest time practicable:
(i) in the event of flue gas temperatures sufficiently high to damage filter bags or
other control equipment but only after boiler fuelling is stopped;
(ii) drying out green refractory during commissioning of the boiler following repairs
to boiler refractory, and during subsequent re-bricking, and only up to five days
from commencing drying out;
(iii) during commissioning of the boiler if it is essential to bypass the bag filter or
other control equipment; and
(vi) in the event of bag filter or other control equipment malfunction providing the
bypass shall not occur for more than eight hours at any time.
The dates and times the bag filter or other control equipment is bypassed, and the
reasons for bypassing, shall be recorded, and records shall be retained and made
available to the Southland Regional Council on request, and shall be included as a
part of the Annual Environmental Report required under condition 19.
11.
(a) The maximum sulphur dioxide emission rate shall not exceed 128 kilograms in
any one hour or 2.5 tonnes in a 24-hour period.
The emission rate maybe calculated from the coal combustion rate, sulphur content
of the coal and include an ash retention allowance of 20%; or by measurement in the
stack gases and calculated from the stack gas flow rate.
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(b) An electronic daily trend record shall be maintained of sulphur dioxide emissions.
Daily trend calculations for sulphur dioxide shall be based on the consumption rate of
the coal blend (calculated from the measured steam production rate) and the calorific
value and sulphur content of that coal blend determined according to Condition
11(c), allowing for a maximum 20 percent sulphur retention in the ash.
The electronic daily trend data record for each month shall be reported to the
Consent Authority by the 10th day of the following month. The record submitted to
the Consent Authority shall contain all daily trend data records for sulphur dioxide
for the preceding four week period.
(c) Analysis of coal to be burned in the boiler shall be undertaken at least once every
month, providing the coal source or blend remains constant. If the coal source or
blend changes then a representative analysis of the sulphur content shall be carried
out as soon as practicable and within not less than five working days of beginning to
burn the new coal. Each single sample to be analysed for coal sulphur shall be
generated from sub-samples that are randomly selected from supplied coal or from
coal that is stored on-site as the case may be. All coal samples required under this
consent shall be analysed as soon as practicable for combustible sulphur as percent by
weight of coal and gross calorific value as megajoules per kilogram of coal, on an as
received basis, by a laboratory accredited by IANZ for these analyses. Monthly coal
sulphur content data shall be provided to the Consent Authority by the 10th day of
the following month.
12. (a) The concentration of:
(i) Total suspended particulate matter in combustion gas in the boiler stack or the
duct into the boiler stack shall be measured within three months of the
commencement of operation of the second boiler and at least once every 12 months.
(ii) Sulphur dioxide in combustion gas in the boiler stack or the duct into the boiler
stack shall be measured within three months of the commencement of operation of
the second boiler and at least once every six (6) months.
Measurement of the discharge from the boiler shall occur when the boiler is operating
at a rate of at least 60 percent of the maximum continuous rating. Testing, and
analysis of samples as appropriate, shall be carried out by an organisation and by a
laboratory accredited by International Accreditation New Zealand (IANZ) for the
tests and analyses involved.
(b) The consent holder shall install sampling ports in the boiler stack or the duct into the
boiler stack as appropriate in accordance with Australian Standard AS4323.1-1995 or
equivalent method for the provision and location of sampling ports, services,
platforms and access as well as provision of single phase electrical supply.
(c) The method of sampling and analysis for total particulate matter shall comply with
US Environmental Protection Agency (USEPA) Methods 5 or Method 17, or ISO
9096:2003, ASTM D3685-98, or equivalent method to the satisfaction of the
Southland Regional Council. The testing time for each particulate sample shall be two
hours continuous, and at least three samples shall be collected. Results shall be
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adjusted to zero degrees Celsius, 101.3 kilopascals, and 12 percent carbon dioxide on
a dry gas basis, and as a mass emission expressed as kilograms per hour.
(d) The method of sampling and analysis for sulphur dioxide shall be USEPA Method 6,
6A, or 6C, or an equivalent method to the satisfaction of the Southland Regional
Council. The testing time for each sulphur dioxide sample shall be one hour
continuous and at least three samples shall be collected. Results shall be adjusted to
zero degrees Celsius, 101.3 kilopascals, and 12 percent carbon dioxide on a dry gas
basis, and as a mass emission expressed as kilograms per hour.
(e) Volumetric flow of combustion gas, and gas temperature, during each particulate and
sulphur dioxide emission test shall be determined and recorded and results presented
as a part of the particulate emission test report.
(f) The oxygen or carbon dioxide concentration in combustion gases shall be
continuously monitored and recorded during each particulate and sulphur dioxide
emission test and results shall be presented as a part of the particulate emission test
report.
(g) The following operating parameters of the boiler during each particulate and sulphur
dioxide emission test shall be obtained and included in the testing report: furnace
temperature, furnace back-end oxygen concentration (wet gas or dry gas basis
identified), rate of firing (coal consumption per unit time and steaming rate) and any
abnormal operation during the testing period.
The results of emissions tests and other information and a description of the testing
methods used shall be provided to the Southland Regional Council within 20 working days
following receipt by the consent holder of the testing report. A summary of the results and
other information shall also be included in the Annual Environmental Report required
under condition 19.
13. The coal-fired boiler shall be serviced at least once every year by a person competent in the
servicing of such boilers. This servicing shall include internal cleaning and replacement or
repair of damaged equipment and services as necessary, adjustment of the air to fuel ratio
to optimise energy efficiency and to minimise the emission of products of incomplete
combustion; and calibration and adjustment of boiler monitoring equipment consistent
with the intent of this consent. Servicing reports shall be prepared and copies shall be
provided to the Southland Regional Council on request. Confirmation that this servicing
has been undertaken, and at least a summary of the service reports shall be reported to the
Southland Regional Council in the Annual Environmental Report required under condition
19.
14. An obscuration meter shall be installed and operated in accordance with the supplier’s
instructions to provide continuous measurement and recording of obscuration of the
discharge. The meter shall be maintained and calibrated by a competent person such that a
reliable indication of plume opacity is achieved at all times. Boiler operators shall take into
account obscuration meter readings when determining ongoing compliance with condition
(9). A record of obscuration measurements shall be held on site and shall be provided to
the Southland Regional Council on request.
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15. Fugitive dust from the coal delivered, stored and used on site shall be minimised by all
practicable means, which shall include unloading coal within an appropriately enclosed
facility and storage of coal in an enclosed environment.
16. The tonnage of coal burned per month, and the average and maximum one hour and 24-
hour coal consumption and gross energy input rates, shall be calculated each month based
on recorded steam production rates. This information shall be summarised in the Annual
Environmental Report required under condition 19.
Milk Powder Plant
17. (a) Discharges to air from the milk powder drier stack shall be via cyclones and bag
filters through stacks discharging vertically without impediment with minimum height
above ground level (including building height) of 41 metres, with the actual stack
height being no less than 10 metres above the roof ridgeline of all buildings on the
consent holder’s property. The minimum efflux velocity of exhaust air from each
drier stack shall be 15 metres per second at the maximum continuous rating of the
drier. The concentration of total suspended particulate in each drier stack exhaust air
shall not exceed 12 milligrams per cubic metre corrected to 0 degrees Celsius, 101.3
kilopascals, on a dry gas basis. The combined emission rate of suspended particulate
matter from the drier stack shall not exceed 2.7 kilograms per hour.
(b) The consent holder shall install sampling port(s) in the drier stack in accordance with
Australian Standard AS4323.1-1995 or equivalent method for the provision and
location of sampling ports, services, platforms and access as well as provision of
single phase electrical supply.
(c) The concentration and emission rate of total suspended particulate matter in each
drier stack exhaust air shall be measured within four months after completing
commissioning of the second powder plant and at least every twelve months to
confirm compliance with condition 16(a). Measurement of the discharge from each
stack shall occur when the associated powder plant is operating at least 75 percent of
its maximum continuous rating. Testing, and analysis of samples as appropriate, shall
be carried out by an organisation and by a laboratory accredited by IANZ for the
tests and analyses involved.
(d) The method of sampling and analysis for total particulate matter shall comply with
US Environmental Protection Agency (USEPA) Methods 5 or Method 17, ISO
9096:2003 or ASTM D3685-98, or a similar method to the satisfaction of the
Southland Regional Council. The testing time for each sample shall be two hours
continuous, and at least three samples shall be collected. Results shall be adjusted to
zero degrees Celsius, 101.3 kilopascals, on a dry gas basis, and as a mass emission
from each stack expressed as kilograms per hour.
(e) The volumetric flow and temperature in the drier stack shall be determined and
recorded and results presented as a part of the particulate emission test report.
(f) The results of emissions tests and other information and a description of the testing
methods used shall be provided to the Southland Regional Council within 20 working
days following receipt by the consent holder of the testing report. A summary of the
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results and other information shall be included the Annual Environmental Report
required under condition 19.
Reporting
18. A record of all complaints made to the consent holder relating to odour or particulate
matter shall be maintained, and shall include:
(a) the location where the odour or particulate matter was detected by the complainant;
(b) a description of the wind speed and wind direction, and rainfall if any, when the
odour or particulate matter was detected by the complainant;
(c) the most likely cause of the odour or particulate matter detected; and
(d) any corrective action undertaken by the consent holder to avoid, remedy or mitigate
the odour or particulate matter detected by the complainant.
The record of complaints shall be provided to the Southland Regional Council on request,
and as part of the Annual Environmental Report required under condition 19.
19. The consent holder shall, no later than 30 September of each year, provide an Annual
Environmental Report to the Southland Regional Council setting out all monitoring and
reporting results required by conditions of consent and their interpretation by an
appropriately qualified person, including emission tests undertaken in relation to this
consent over the previous period. Where the result of any test or monitoring undertaken in
relation to this consent exceeds the relevant limit or does not comply with the relevant
condition, then the steps that were taken to rectify the non-compliance shall be provided.
Management & Contingency Plan
20. The consent holder shall prepare, through the services of an independent appropriately
qualified person(s), an "Air Discharge Management & Contingency Plan" (the Plan). The
purpose of the Plan shall be to:
(a) describe the operation of the plant in relation to its potential impacts on the air
environment;
(b) define the actions to be taken to ensure compliance with all conditions of this
consent, or in response to any incident which may impact adversely on the
environment;
(c) describe how representative samples of coal will be taken to give a composite sample
for analysis; and
(d) present contingency plans in the event of mechanical or electrical or other problems
that provide for continuing operation of processes and/or timely shutting down of
processes as the case may be, to ensure conditions of this consent are not breached.
The Plan shall include details of the steps to be taken to correct any non-compliances
identified. The plan shall be provided to the Southland Regional Council within three
months of the commencement of this consent. The Plan should be reviewed at least on an
annual basis and it may be amended at any time during the period of this consent as the
independent qualified person(s) considers appropriate to improve management and
contingency procedures. If/when the Plan is amended, a copy of the amended version, (or
amended sections) shall be sent to the Southland Regional Council as soon as practicable
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following amendment. Amendments to the Plan shall be referenced in the Annual
Environmental Report required under Condition 19.
Review of Consent and Annual Charges
21. The Southland Regional Council may, once per year, on any of the last five working days of
May or November each year, serve notice of its intention to review the conditions of this
consent for the purposes of:
(a) dealing with any adverse effect on the environment which may arise from the exercise
of the consent and which it is appropriate to deal with at a later stage;
(b) requiring the adoption of the best practicable option to remove or reduce any adverse
effect on the environment;
(c) requiring the adoption of measures to reduce adverse effects of particulate matter or
sulphur dioxide indicated by monitoring in accordance with conditions of this
consent; and
(d) modifying or extending any of the monitoring requirements of this consent.
22. The consent holder shall pay an annual administration and monitoring charge to the
Southland Regional Council, collected in accordance with Section 36 of the Resource
Management Act 1991.
for the
Southland Regional Council
Michael Durand
Acting Consents Manager
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