free range broiler farm arapohue hazardous substances … · 2018-08-05 · 2 tonkin & taylor...

Free Range Broiler Farm,Arapohue:Hazardous substancesassessment

Prepared for

Tegel Foods Ltd

Date

September 2017

Job Number

1003839

fdur

Stamp

Document Control

Title: Free Range Broiler Farm, Arapohue

Date Version Description Prepared by: Reviewed by: Authorised by:

28/08/17 A Draft report RVDM JMS JMS

\\ttgroup.local\files\aklprojects\1003839\workingmaterial\planning\volume 2 - tech reports (pd review)\technical report f - hazardous substances assessment\rvdm tegel hs assessment draft nls.docx

Distribution:

Tegel Foods Ltd 1 copy

Northland Regional Council 1 copy

Kaipara District Council 1 copy

Tonkin & Taylor Ltd (FILE) 1 copy

Tonkin & Taylor Ltd Free Range Broiler Farm, Arapohue - Hazardous Substances Assessment Tegel Foods Ltd

September 2017 Job No: 1003839

Table of contents

1 Introduction 1

2 Site description 2

3 Description of proposed activities 3 3.1 Activities on-site 3 3.2 Description of surface water drainage 4 3.3 Hazardous substance quantities 5

4 Control and management of hazardous substances 6 4.1 Delivery and transport 6 4.2 LPG storage 6 4.3 Secondary containment systems and spill containment 6 4.4 Emergency spill response plan 6

5 Resource consent requirements 8

6 Risk assessment 9 6.1 Introduction 9 6.2 Hazard analysis 9 6.3 Sensitivity of local environment 1 6.4 Risk analysis 3

6.4.1 Methodology 3 6.4.2 Risk evaluation 4

6.5 Cumulative effects 4 6.6 Transport 5 6.7 Conclusions 5

7 Alternative site location and alternative methods 6

8 Kaipara District Plan – Assessment Criteria 7

9 Conclusions 8

10 Applicability 9

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1 Introduction

Tegel Foods Ltd (Tegel) has entered into a sale and purchase agreement for a site at 5763 State Highway 12 (SH12), Arapohue, Dargaville (‘the site’). Tegel is proposing to develop a free range broiler chicken farm on the site.

The construction of the proposed poultry farm will include the development of 32 free range poultry sheds that will be clustered in four groups of eight. The operation of the farm will require the storage of hazardous substances on site, including fuel, detergents and sanitisers, water treatment chemicals and rodent and insect control.

The proposed storage and use of hazardous substances at the site are a discretionary activity under Rule 12.10.21 of the Kaipara District Plan (KDP), as the permitted quantities in Appendix 25D - Hazardous Substances are exceeded.

The management of hazardous substances is governed by the Resource Management Act 1991 (RMA), the Hazardous Substances and New Organisms Act 1996 (HSNO) (until December 2017), and Health and Safety at Work (Hazardous Substances) Regulations 2017 (from December 2017). Under the RMA, controls for hazardous facilities and activities are exercised through District Plans, including requirements for resource consents. This report assesses the proposed storage and use of hazardous substances against the provisions of the KDP. It also outlines the relevant requirements of HSNO and the Health and Safety at Work regulations, as these relate to the proposed site controls to mitigate the risks posed by the use of hazardous substances.

Tonkin & Taylor Ltd (T+T) has been engaged by Tegel to prepare this hazardous substances assessment. This report has been prepared in fulfilment of Section 88 of the Resource Management Act 1991 (RMA), and in accordance with our letter of engagement dated 2 August 2017.

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2 Site description

The site is located at 5763 SH12, Arapohue, approximately 12 km south of the Dargaville township.

The site is currently operated as a dairy farm. The existing farm buildings on site include a 50 bale rotary milking shed, calf rearing sheds, an implement shed and five dwellings. The existing farm buildings will be retained onsite.

The topography at the site can be divided into the flat area to the west, and the hilly area to the east. The western area of the site comprises an alluvial flat flood plain. This area ranges in elevation from 1.5 to 2.0 mRL and is located within the KDP flood susceptibility area, as well as being identified as Northland flood susceptible land in the Regional Water and Soil Plan for Northland (RWSP). The eastern portion of the site is hilly and ranges from 2.0 mRL to 70 mRL at the back of the site.

A limestone quarry is located in the north-eastern corner of the site and is approximately 70 m by 50 m and around 5 m in depth. The material being quarried is a sheared, chalky limestone and is the same material which is gravelling the farm races.

There are four main existing farm drains on site, that run perpendicular to SH12 from the hill catchment and ultimately to the Wairoa River. The drains are typically 2 m wide and approximately 800 mm deep. They run alongside the metalled races, which are raised approximately 250 mm above the surrounding paddocks.

Figure 2.1: Site boundary Source: Northland Regional Council Local Maps, 2017

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3 Description of proposed activities

3.1 Activities on-site

The proposed poultry farm will use and store hazardous substances for a number of on-site activities including:

LPG for fuel and heating at the Energy Centre;

Detergents and sanitisers for cleaning the sheds;

Detergents and sanitisers for cleaning truck and vehicles;

Water treatment chemicals; and

Rodent and insect control.

A site layout plan including the location of the proposed Energy Centre and water treatment plant is shown on Drawing 1003839-020 attached with the set of drawings.

Energy Centre

The farm development includes a proposed Energy Centre building which will be powered by litter combustion. Although chicken litter is the primary fuel, LPG will also be used as a back-up and during start-up of the burners. LPG will be stored within bulk tanks on-site adjacent to the Energy Centre building. LPG will be delivered to the site via bulk tanker and the on-site tanks refuelled by the delivery driver.

Shed cleaning and sanitising

The farm will utilise a range of detergents and sanitising products for cleaning the walls, floors and ceilings of the sheds. A range of products are used, with the specific brand and product varying over time depending on contract changes and arrangements. The site uses a combination of sanitisers including chlorine and iodine based substances.

To wash down the sheds, a high pressure, low volume waterblaster is used before the shed is sanitised. Sheds are left to dry prior to the next cycle of bedding material and restocking of the sheds.

Washwater is proposed to be disposed of via surface spray irrigation using a pump station from the storage tanks and a rising main to a K line irrigation system (or similar) at designated irrigation fields located on the elevated hill areas to the east of the proposed farms. The proposed irrigation areas are vegetated with grass and have gradients of less than 10 % which will reduce the risk of runoff. The irrigation systems will be set back a minimum of 20 m from any open water bodies or water bores and will be located in areas less likely to result in concentration of overland flow.

Truck and vehicle cleaning and sanitising

Truck washing and sanitation will be undertaken within a designated area and will also be disposed of via surface spray irrigation as described above.

Truckwashing is typically undertaken using a high pressure, low volume water blasters, with cleaning chemicals dosed from 200 litre drums.

The drums will be stored within the wash area, which ensures that any spills or leaks are contained.

Water treatment plant

The poultry farm potable water supply will be sourced from a combination of roof water and groundwater obtained from on-site bores. The potable water will be treated prior to use via an

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onsite water treatment plant. The water treatment plant will involve a chlorine generator for disinfection.

Other hazardous substances

In addition to the above hazardous substances, small quantities of rodenticide, insecticides and pesticides will be used at the site.

3.2 Description of surface water drainage

The existing farm stormwater network consists of open channel drains which typically border the roads and paddocks and collect surface water runoff. Lateral open drains between the paddocks connect into larger collector drains which flow the west and discharge into an open drain adjacent to SH12. The location of the site and its existing land use and surface water related features are shown in Figure 3.1 below.

Figure 3.1: Plan of existing site

The Wairoa is a tidal river with a mean sea level (MSL) of 0.15 mRL, and mean high water spring level (MHWS) of 1.68 mRL (measured at the Dargaville tidal gauge which is approximately 12 km north west of the site).

The low lying area of the site, on the eastern side of SH12, ranges in elevation from 1.5 to 2.0 mRL. As such, parts of the site have ground level below present-day Mean High Water Springs. The site area is within the Kaipara District Flood Susceptibility Area (coastal inundation).

To mitigate against flooding on the developed site, the following mitigation options are proposed:

Construct a bund around the site with a crest level of 3.8 mRL (500 mm of freeboard to the 2065 2 % AEP flood level);

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Pipe existing drains through the bund with flap gates installed to prevent negative (or reverse) flow, but allow for gravity drainage under low tide conditions;

Retain or enhance the capacity of the existing drainage network on site; and

Install pumps to enable flood water or ground water to be pumped over the bund for periods during which drainage is required against high tide conditions.

These mitigation options will avoid any flooding of any dangerous goods storage areas on the site.

3.3 Hazardous substance quantities

A summary of the hazardous substances proposed to be used at the site, their hazard classes and the maximum expected volumes is provided in Table 2.1 below.

Table 2.1: Summary of substances, volumes and hazard classifications

Substance HSNO Classification Maximum anticipated volumes stored

Container size

Physical form

HSNO Code Description of hazard classes

LPG 2.1.1A Flammable gas 16 tonnes Bulk tank Gas

Detergents and sanitisers

6.1D, 6.1E, 6.3A, 8.3A, 9.1D

Acutely toxic - Harmful, irritating to the skin, corrosive to eyes, corrosive, biocidal action.

2,000 litres 20L to 1,000L IBCs

Liquid

Truck Sanitiser

6.1E, 8.3A, 8.1A, 8.2C, 9.1C, 9.3C

Acutely toxic - May be harmful, corrosive to eyes, corrosive to metals, corrosive to skin, harmful in the aquatic environment, harmful to terrestrial vertebrates.

500 litres 200L drums Liquid

Water treatment chemicals

8.2A, 8.3A,9.1A Corrosive to skin and eyes, eco-toxic in the aquatic environment.

1,000 litres 20l to 1,000L IBCs

Liquid

Water acidification

6.1E, 6.3B, 8.3A Acutely toxic - May be harmful, mildly irritating to the skin, corrosive to eyes.

400 litres 200l drums Liquid

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4 Control and management of hazardous substances

4.1 Delivery and transport

Hazardous substances will be delivered to the site and unloaded next to the main dangerous goods store located within the Energy Centre. The unloading area will be sealed and goods will be unloaded by forklift before being transferred to the dangerous goods store. A spill kit will be located at the dangerous goods store, which will include booms and equipment that can be used to contain any spills.

Cleaning chemicals and sanitising agents will be moved around the site on a small truck, or tractor and trailer to individual farms as required. Any quantities greater than 20 L, will be secured during transit on-site.

4.2 LPG storage

LPG is proposed to be stored within bulk tanks on-site. There are specific requirements under the HSNO for LPG storage at the site, including:

Requirements for design, construction and installation, the tanks are constructed in accordance with a specified standard, there are appropriate foundations and meet required seismic and wind loadings;

Requirements for a hazardous substance location certificate and that filling of the tanks is undertaken by an Approved Handler;

Minimum separation distances between the LPG tanks and protected and public places:

20 m from any protected place (which includes any dwelling, residential building or any building or open air area where people are likely to assessable both on and off-site); and

10 m from any public place (which includes any place where people may frequent including a public road);

Emergency management plan requirements;

Fire extinguishers; and

Signage.

4.3 Secondary containment systems and spill containment

Secondary containment (bunding) is required for storage of hazardous substances at the site. The majority of hazardous substance will be stored at the dangerous goods store located within the Energy Centre, which will include bunding to contain a minimum of 100 % of the maximum container size (anticipated to be 1,000 L). This will be achieved by providing a raised lip at the door, with a concrete nib around the store.

The water treatment plant will also include bunding to contain any spill or leaks from the storage of operation of the treatment plant.

Any storage at the individual farms will be bunded through the use of portable plastic spill pellets or trays or within small sheds with a bunded base.

4.4 Emergency spill response plan

Prior to the operation of the poultry farm, an emergency spill response plan will be prepared and implemented. The emergency spill response plan will include:

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Procedures in the event of a spill;

Identification of all storage locations;

Location of all spill kits;

Minimum contents of each spill kit;

Spill response training; and

Monitoring and maintenance schedules.

Should a spill occur, implementation of the procedures in the emergency spill response plan will ensure appropriate spill response actions are taken. Spill kits will also be located at the dangerous goods store, within vehicles used to transport chemicals around the site and any other areas of the site which will hold or store hazardous substances.

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5 Resource consent requirements

The rules for Hazardous Substances within the Rural Zone are set out in Rule 12.10.21 of the KDP (November 2013). Appendix 25D of the KDP sets out the permitted activity volumes for hazardous facilities. Where the permitted activity volumes are exceeded, a consent as a discretionary activity is required.

A summary of the proposed volumes compared with the permitted activity thresholds for the Rural Zone are outlined in Table 5.1 below.

Table 5.1: Evaluation against Kaipara District Plan permitted activity thresholds for the Rural zone

Substance Group

HSNO Classifications Anticipated volumes stored

Permitted activity maximum threshold

Complies

LPG 2.1.1A 16,000 kg 1,500 kg No

Detergents and sanitisers

6.1D, 6.1E, 6.3A, 8.3A, 9.1D

2,000 L 2,000 L Yes

Truck Sanitiser 6.1E, 8.3A, 8.1A, 8.2C, 9.1C, 9.3C

500 L 2,000 L Yes

Water Sanitising

8.2A, 8.3A, 9.1A 1,000 L 500 kg No

Water Acidification

6.1E, 6.3B, 8.3A 400 L 2,000 kg Yes

The proposed storage and use of hazardous substances requires resource consent as a discretionary activity.

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6 Risk assessment

6.1 Introduction

The following sub-sections set out a qualitative risk assessment of the storage and handling of hazardous substances at the site for the proposed storage volumes. The approach to hazard analysis and risk assessment is based on Ministry for the Environment Guidance for Hazardous Facilities ME3391 (2000).

The risk assessment involves consideration of:

Identification of potential hazards, failure modes and exposure pathways;

The sensitivity of the surrounding environment;

The separation distances from neighbouring activities and the number of people potentially at risk from the facility;

Cumulative risks of hazardous facilities in the area; and

Transport of hazardous substances on and off the site to ensure safe access and appropriate routes for delivery vehicles on site to minimise risk of spillage.

6.2 Hazard analysis

The hazards associated with hazardous substances are generally classified as follows:

Fire/Explosion Effects: concerned with damage to property, the built environment and safety of people;

Human Health Effects: concerned with the well-being, health and safety of people; and

Environmental Effects: concerned with damage to ecosystems and natural resources.

Table 6.1 sets out the hazard analysis for the site, identifying and rating potential hazards.

1 http://www.mfe.govt.nz/publications/hazardous/assessment-guide-for-haz-facilities-02.pdf

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Table 6.1: Hazard Analysis

Hazardous substance Potential hazards

Failure modes Potentially affected environment

Container size

Storage information Indicative hazard rating

LPG (class 2 flammable gas)

Fire/Explosion Fire in storage area People, property

Bulk tanks

Stored in bulk tank Low to medium due to secure storage and separation from buildings and other hazardous substances, can be mitigated

Detergents and sanitisers (class 6 toxics and class 8 corrosives, class 9 ecotoxic)

Human health;

Environment

Container leak or rupture while stored

Spillage during loading/ unloading

Spillage during movement around site

People, environment

20 L to 1,000 L IBCs

Stored in secure dangerous goods store with secondary containment

Low to medium due to the container sizes the need to handle around the site, can be mitigated

Truck sanitizer (class 6 toxics and class 8 corrosives, class 9 ecotoxic)

Human health;

Environment



Spillage during movement around site

People, environment

20 L to 200 L drums


Low to medium due to the container sizes the need to handle around the site, can be mitigated

Water treatment chemicals (class 6 toxics and class 8 corrosives, class 9 ecotoxic)

Human health;

Environment



People, environment

20 L to 200 L drums


Low due to the container sizes and separation from sensitive activities around the site, can be mitigated

Water acidification Human health;

Environment



People, environment

20 L containers


Low due to the small container sizes and use of secondary containment and separation from sensitive activities around the site, can be mitigated.

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6.3 Sensitivity of local environment

The sensitivity of the receiving environment to hazardous substances relates to:

The locations of people off-site, who could be exposed in the event of a fire, explosion or gas release; and

The location of waterways and sensitive ecosystems that could be impacted in the event of a spill.

The site is zoned Rural in the KDP and is approximately 250 hectares in size. Figure 6.1, on the following page, shows the site boundary and the location of dwellings both on and off-site and nearby marae and urupa, which are areas where people may gather.

The site currently operates as a dairy farm, with four existing dwellings to house the farm workers. There is also a neighbouring property over which Tegel has entered into a sale and purchase agreement to expand the farm, located in the north-western corner (CT reference: NA136B/366). This makes the total number of dwellings on the subject site to be five.

The north-western portion of land adjacent to the site currently contains maize fields, while the north-eastern portion contains a Marae, urupa, two small dwellings and grassed hilly paddocks. Due to the sloping topography, both the dwellings and marae have limited views of the site. The area adjacent to the site to the east, contains grassed hilly paddocks and there are no dwellings that have been identified adjacent to this site boundary.

There are a number of dwellings located to the south of the site, as identified in Figure 6.1 below. Two dwellings border the site, north of Whakahara Road, and are elevated in the hilly area. Due to the sloping topography and vegetation, the dwellings to the south of Whakahara Road identified in Figure 6.1 have limited views of the site.

There is one dwelling (and its associated sheds) located opposite State Highway 12 to the west of the site. This area is relatively flat, much like the western portion of the site. There are also two reserve management units, as identified in the KDP (Map numbers: RMU374 and RMU383), which border the site near the Wairoa River.

Separation distances to neighbouring dwellings from areas where hazardous substances will be used and stored are of the order of 700 to 900 metres.

The surface drainage systems on the site are described in Section 3.2. If a spill were to enter these surface drains, it would ultimately impact on the Wairoa River.

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Figure 6.1: Site boundary and features Source: Northland Regional Council Local Maps, 2017

Dairy shed

Main site entrance

SH 12

Limestone quarry

Whakahara Road

Key

Dwelling on the site Site boundary

Dwelling outside of the site Marae

Cemetery

Reserve management units

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6.4 Risk analysis

6.4.1 Methodology

A qualitative analysis of the identified hazards/failure modes has been undertaken, in accordance with the methodology described in the MfE (2000) guidance, by applying a qualitative rating to the frequency (likelihood) of the failure occurring, taking into account the controls in place, and an effects rating which considers the severity of the potential effect. The qualitative likelihood and effects ratings are described in Table 6.2 and Table 6.3, respectively.

Table 6.2: Qualitative rating of likelihood

Frequency rating Descriptor Explanation

A Almost certain The event is expected to occur in most circumstances

B Likely The event will probably occur in most circumstances

C Moderate The event should occur at some time

D Unlikely The event could occur at some time

E Rare The event may occur only in exceptional circumstances

Table 6.3: Qualitative rating of effects

Effects rating Descriptor Explanation

1 Insignificant No injuries, negligible damage to property

2 Minor First aid treatment required, minor damage to property

3 Moderate First aid treatment required, moderate damage to on-site property, minor damage to off-site property

4 Major Extensive injuries, extensive damage on-site, moderate damage to off-site property

5 Catastrophic Fatalities both on and off-site

The likelihood and effects ratings are then combined to qualitatively assess the overall level of risk associated with each hazard. The risk assessment matrix is shown in Table 6.4.

Table 6.4: Risk matrix

Frequency

Likelihood

Severity

Insignificant Minor Moderate Major Catastrophic

(1) (2) (3) (4) (5)

Almost certain

(A)

Significant Significant High High High

Likely (B) Moderate Significant Significant High High

Moderate (C) Low Moderate Significant High High

Unlikely (D) Low Low Moderate Significant High

Rare (E) Low Low Moderate Significant Significant

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6.4.2 Risk evaluation

Table 6.5 sets the findings of the hazardous substances risk assessment. The risks identified are assessed as being low to moderate and can be adequately managed through design and operational procedures. An emergency spill response plan will be prepared to manage risks during operation and staff will be appropriately trained in the procedures for storage and handling hazardous substances, including managing chemical spills and fires. No hazards have been identified that cannot be mitigated through the proposed site control measures.

Table 6.5: Risk Assessment

Event Likelihood of event

Effects/ Consequence Level of risk Mitigation/ Management Measures

Fire at LPG Tank area

Rare – the event may occur only in exceptional circumstances

Moderate – potential damage to property, injury to persons on-site

Moderate, managed through design and site controls. Management responsibility must be specified

LPG stored in purpose designed LPG tanks.

Tanks segregated from occupied areas and other hazardous substances storages.

Hazardous atmosphere zones, controlled zones and fire protection measures will be in place. Emergency spill response plan will be in place.


Moderate – the event may occur at some time

Insignificant– on-site release contained through spill containment systems, and use of spill kits

Low, managed through design and site controls

Secondary containment of hazardous substances with pooling potential and spill kits and controls

Spill or container rupture during unloading/ loading


Minor – minor effects on the environment

Moderate, managed through spill procedures and controls

Sealed unloading area and spill kits and controls

Container leak, or spill during transport around site


Minor – minor effects on the environment

Moderate, managed by minimising the volumes transported, and spill procedures and controls

Only smaller quantities transported around site, or larger quantities secured during transport. Spill kits on vehicles

6.5 Cumulative effects

The site is within a rural area with no other hazardous facilities identified in the vicinity of the site. Therefore, there will be no cumulative effects of hazardous substances storage or use.

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6.6 Transport

The site currently has a number of vehicle access ways off State Highway 12. It is proposed to relocate the main existing access 25 m north along the Stage Highway. All deliveries of hazardous substance will be from this main entrance way of State Highway 12. Any transport of hazardous substances will also be in accordance with the Land Transport Rule: Dangerous Goods 2005.

6.7 Conclusions

The potential adverse effects on the environment have been identified taking into account the type and total volume of hazardous substances proposed to be used and stored at the site.

The most significant events that could occur on site have been identified as a fire at the LPG storage area and/or a container leak or rupture.

The LPG tanks and dangerous goods store (at the Energy Centre) will be located approximately 700 m from the site boundary and a considerable distance from residential dwellings or other sensitive activities. Provided the management and mitigation measures are put in place and followed, we assess that the risk of adverse effects on the environment, owners and occupiers of the adjoining properties, and the general public from the proposed hazardous facility is low.

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7 Alternative site location and alternative methods

As outlined in Section 6 above, the risks associated with the storage and use of hazardous substances at the site can be appropriately mitigated and no consideration of alternative sites have been considered.

Alternative methods for the storage and management of hazardous substances was considered during concept design phase but ruled out for the reasons set out in Table 7.1 below.

Table 7.1: Alternative methods considered

Alternative methods considered Reasons they were discounted

Each eight shed farm block having a separate dangerous goods storage area.

The total volume of hazardous substances would be higher as each farm would require bulk volumes as well as what is required on an on-going basis.

The greater number of storage locations, increases the risk of a failure during storage.

Would require the provision of additional infrastructure (e.g. bunds, sealed unloading area, spill kits, controls and fire protection measures).

Storage of hazardous substances within a separate centralised building dedicated for the storage of hazardous substances separate to the Energy Centre.

Construction of a centralised building would have required construction of a building on the flat land in the middle of the site that is flood prone. The building would have been located outside the proposed flood bund location, therefore at risk of flooding.

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8 Kaipara District Plan – Assessment Criteria

Assessment criteria is outlined under 12.10.21 of the KDP when an activity does not meet the permitted activity criteria. A summary of the assessment criteria is outlined in Table 8.1.

Table 8.1: Assessment criteria

Criteria Comments

i. The proposed site and layout, with a description of the nature and scale of the proposed facility and associated operations;

Section 1.0, 2.0

ii. Location, type and quantities of hazardous substances involved; Section 2.3

iii. Site drainage and off-site infrastructure (e.g. drainage type and capacity);

Section 2.2

iv. Identification of on-site hazards, failure modes and exposure pathways from the proposed facility including a description of the environment potentially affected;

Section 5.2

v. Transport of hazardous substances on and off the site, mode and route selection;

Section 5.6

vi. The sensitivity of the surrounding human, natural and physical environment, and proposed measures to protect them (including wildlife habitats and water bodies);

Section 5.3

vii. Separation distances from water bodies, coastal water, neighbouring activities and people potentially at risk from the hazardous facility, including consideration of the proximity to people oriented activities (e.g. child care, education facilities, rest homes, hospitals);

Section 5.3

viii. Potential cumulative or synergistic effects, within the site and the locality;

Section 5.5

ix. The presence or otherwise of natural hazards which could adversely influence the inherent risks from a hazardous facility to the environment;

Section 2.2

x The extent to which alternative locations and methods have been considered;

Section 6.0

xi Hazard and risk analysis; Section 5.0

xii Management of wastes containing hazardous substances; The only wastes generated at the site is empty containers, which do not pose any significant risks to people, property or the environment.

xiii Proposed contingency and emergency plans; Section 3.4

xiv Proposed monitoring and maintenance schedules Section 3.4

xv Any consultation, assessment or responses received from the NZ Fire Service.

No consultation has been undertaken with the NZ Fire Service. As part of the preparation of the emergency response plan, consultation with the NZ Fire Service will be undertaken.

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9 Conclusions

This Hazardous Substance assessment is provided in respect of a discretionary activity resource consent application for the storage of hazardous substances on-site.

The proposed farm will use and store hazardous substances for a number of on-site activities. This includes LPG for heating and a range of detergents and disinfectants for cleaning the sheds and vehicles which includes toxic, corrosive and eco-toxic substances.

This assessment describes the site and surrounds, then analyses the controls, potential hazards and risk associated with the storage and use of hazardous substances at the site.

The findings of the risk assessment are that the risks to people, property and environment are low to moderate and can be managed through building design and operational procedures. Site controls proposed by the applicant include designated areas for hazardous substances with fire resistance controls and spill containment systems.

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10 Applicability

This report has been prepared for the benefit of Tegel Foods Ltd with respect to the particular brief given to us and it may not be relied upon in other contexts or for any other purpose without our prior review and agreement.

Tonkin & Taylor Ltd

Report prepared by: Authorised for Tonkin & Taylor Ltd by:

.......................................................... ...........................….......…...............

Rob Van de Munckhof Jenny Simpson

Senior Environmental Engineer Project Director

RVDM

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free range broiler farm arapohue hazardous substances … · 2018-08-05 · 2 tonkin & taylor...

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