Hunua Quarry Management Plan · Hunua Quarry Management Plan This Quarry Management Plan (QMP) is a non-statutory document that has voluntarily ... (BLAST NOISE) AND FLY ROCK

Hunua Quarry

Management Plan

This Quarry Management Plan (QMP) is a non-statutory document that has voluntarily

been prepared by Winstone Aggregates in general accordance with the relevant provisions

of the Papakura District Plan.

Winstone Aggregates, September 2009

Hunua QMP September 2009

Preamble

(a) Quarrying is a permitted activity at Hunua Quarry under the Papakura District Plan

(referred to from herein as PDP), subject to a range of various development controls.

The site also has existing use rights for the quarrying activity.

(b) Winstone Aggregates (referred to as Winstone from herein) is not formerly required to

prepare a QMP for the Papakura District Council (referred to as PDC from herein).

Despite this, Winstone has developed this QMP in consultation with representatives of

the community and PDC to help provide an assurance to the community that potential

environmental effects associated with quarrying at the site are appropriately managed

and controlled.

(c) A Site Liaison Group (from herein referred to as SLG) has recently been established to

help facilitate improved communication and ongoing good relations between Hunua

Quarry management and the community.

(d) This QMP will address all the same matters required by rule 6.13.8.1 (d) of the PDP.

It will also address procedures for continued consultation and liaison with the

community, a description of the existing quarry operations and any proposed changes

to these.

(e) Winstone will operate its Hunua Quarry in accordance with this management plan.

(f) This QMP will be reviewed at least every five years by Winstone.

Revision

This revision of the QMP has been undertaken in April 2009, to better reflect operational

requirements at Hunua Quarry.


TABLE OF CONTENTS

1. GENERAL INTRODUCTION ............................................................................................................. 5

1.1 BACKGROUND TO THE QMP ....................................................................................................................... 5 1.2 CHANGES OR AMENDMENTS TO THE QMP .................................................................................................. 6

2. BACKGROUND TO THE QUARRY .................................................................................................. 6

2.1 LOCATION ................................................................................................................................................... 6 2.2 HISTORY AND OWNERSHIP ......................................................................................................................... 8 2.3 CURRENT SITE LAYOUT .............................................................................................................................. 8 2.4 GEOLOGY ................................................................................................................................................... 8 2.5 WATER RESOURCES .................................................................................................................................. 11 2.6 VEGETATION ............................................................................................................................................ 11 2.7 ARCHAEOLOGY ......................................................................................................................................... 11

3. REGULATORY FRAMEWORK ....................................................................................................... 12

3.1 RMA HIERARCHY .................................................................................................................................... 12 3.2 PAPAKURA DISTRICT PLAN (QUARRY ZONE AND ADJOINING ZONES) ...................................................... 13 3.3 REGIONAL COUNCIL CONSENTS ............................................................................................................... 15

3.3.1 Water permits ...................................................................................................................................... 15 3.3.2 Air permit ............................................................................................................................................ 15 3.3.3 Regional Landuse – Sediment Control ................................................................................................ 15

3.4 HASNO .................................................................................................................................................... 15

4. QUARRY OPERATIONS (CURRENT AND FUTURE) ................................................................. 16

4.1 OVERVIEW ................................................................................................................................................ 16 4.2 DESCRIPTION OF ACTIVITIES .................................................................................................................... 16

4.2.1 Vegetation removal and site preparation ............................................................................................ 16 4.2.2 Soil stripping and stockpiling .............................................................................................................. 16 4.2.3 Overburden stripping and disposal ..................................................................................................... 16 4.2.4 Rock removal ....................................................................................................................................... 17 4.2.5 Processing rock ................................................................................................................................... 17

4.3 STORAGE AND DISTRIBUTION .................................................................................................................... 17 4.4 WATER MANAGEMENT .............................................................................................................................. 18 4.5 REHABILITATION AND LANDSCAPE WORKS ............................................................................................... 18

5. QUARRY DEVELOPMENT .............................................................................................................. 18

5.1 QUARRY PIT DEVELOPMENT..................................................................................................................... 18 5.2 OVERBURDEN STRIPPING AND DISPOSAL .................................................................................................. 18

6. ENVIRONMENTAL OBJECTIVE AND MANAGEMENT MEASURES .................................... 22

6.1 GENERAL ENVIRONMENTAL OBJECTIVE ................................................................................................... 22 6.2 EXPLANATION .......................................................................................................................................... 22 6.3 MEASURES TO ACHIEVE THE GENERAL ENVIRONMENTAL OBJECTIVE ....................................................... 22

6.3.1 Resource management framework ...................................................................................................... 22 6.3.2 Management measures ........................................................................................................................ 22 6.3.3 Environmental policy .......................................................................................................................... 23 6.3.4 Environmental management system .................................................................................................... 23 6.3.5 Quarry design...................................................................................................................................... 24

7. ENVIRONMENTAL EFFECTS ......................................................................................................... 25


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7.1 BACKGROUND .......................................................................................................................................... 25 7.2 NOISE ....................................................................................................................................................... 25

7.2.1 Noise effects ........................................................................................................................................ 25 7.2.2 Noise objective .................................................................................................................................... 25 7.2.3 Explanation of noise objective ............................................................................................................ 25 7.2.4 Noise performance standards .............................................................................................................. 25 7.2.5 Measures to implement noise objective ............................................................................................... 26

7.3 GROUND VIBRATION AND AIR OVERPRESSURE .......................................................................................... 29 7.3.1 Effects of Blasting ............................................................................................................................... 29 7.3.2 Vibration and Air Overpressure Objective.......................................................................................... 29 7.3.3 Explanation of Objective ..................................................................................................................... 29 7.3.4 Measures to Implement Vibration and Air Overpressure Objective : ................................................. 29 7.3.5 Blasting performance Standards ......................................................................................................... 31

7.4 TRAFFIC .................................................................................................................................................... 32 7.4.1 Background ......................................................................................................................................... 32 7.4.2 Traffic objective .................................................................................................................................. 32 7.4.3 Explanation of traffic objective ........................................................................................................... 32 7.4.4 Measures to implement the traffic objective ........................................................................................ 32

7.5 DUST (AIR QUALITY) ................................................................................................................................ 33 7.5.1 Air Quality objective ........................................................................................................................... 33 7.5.2 Explanation of air quality objective .................................................................................................... 33 7.5.3 Measures to implement air quality objective ....................................................................................... 34 7.5.4 Air Quality Performance standards .................................................................................................... 35

7.6 LANDSCAPE AND VISUAL .......................................................................................................................... 36 7.6.1 Landscape and visual objective ........................................................................................................... 36 7.6.2 Explanation of landscape and visual objective ................................................................................... 36 7.6.3 Performance standards ....................................................................................................................... 36 7.6.4 Measures to implement the landscape and visual objective ................................................................ 36

7.7 REHABILITATION AND END USE OPTIONS ................................................................................................. 37 7.7.1 Current Rehabilitation and End Use Objectives ................................................................................. 37 7.7.2 Explanation of Rehabilitation and End Use Objectives ...................................................................... 37

7.8 HAZARDOUS SUBSTANCES ........................................................................................................................ 37 7.8.1 Hazardous substances objective .......................................................................................................... 37 7.8.2 Measures to meet the Objective........................................................................................................... 38

7.9 TANGATA WHENUA .................................................................................................................................. 39 7.9.1 Measures to Implement Objective ....................................................................................................... 39

8. MONITORING..................................................................................................................................... 41

8.1 DUST ........................................................................................................................................................ 41 8.2 NOISE (EXCLUDING BLASTING) ................................................................................................................. 42 8.3 GROUND VIBRATION, AIR OVERPRESSURE (BLAST NOISE) AND FLY ROCK ................................................. 42

9. APPENDICES ...................................................................................................................................... 43


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1. GENERAL INTRODUCTION

1.1 Background to the QMP

(a) Quarrying is a permitted activity at Hunua Quarry under the Papakura District Plan

(referred to from herein as PDP), subject to a range of various development controls.

The site also has existing use rights for the quarrying activity.

(b) Winstone is not formally required to prepare a QMP for PDC. Despite this, Winstone

has developed this QMP in consultation with representatives of the community and

PDC to help provide an assurance to the community that potential environmental

effects associated with quarrying at the site are appropriately managed and controlled.

(c) This QMP will address all the same matters required by rule 6.13.8.1 (d) of the PDP.

It will also address procedures for continued consultation and liaison with the

community, a description of the existing quarry operations and any proposed changes

to these.

(d) The Policy section for the Quarry Zone in the PDP (6.13.6) states:

“To require a Quarry Management Plan for all land within the zone and which outlines

operational matters and which gives and indication of the proposed end-state of the

land once quarrying has ceased”

The Rules section for the Quarry Zone in the PDP (6.13.8.1 (d)) states:

“All quarrying and restoration shall be carried out in accordance with the Quarry

Management Plan which shall include the following information in plan form and in

explanatory material:

(i) demarcation of the area to be quarried;

(ii) existing contours;

(iii) an indication of final contours and floor levels including the proposals for the

coordination of final levels of adjoining land;

(iv) proposed ultimate drainage of quarried lands and include any water consents

that it may be necessary to obtain;

(v) an indication of the period over which quarrying will continue, and of staged

development

(vi) provision for the disposal and/or stockpiling of overburden, waste and

quarried material, including the area to be used for stockpiling;

(vii) areas for stockpiling topsoil (where applicable);

(viii) provision for screening unsightly features from public view and fencing

dangerous or potentially dangerous features;

(ix) description of methods to be employed to prevent contamination of air or

natural water and to comply with the Noise and Vibration provisions of these

rules;

(x) an indication of the route by which quarried material is to be removed from the

lot;


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(xi) provision for the progressive restoration of the lot such that the land will be

left in such condition as the Council considers suitable for the establishment of

those uses to which that land may subsequently be put; and

(xii) description of methods to be employed to avoid, remedy or mitigate any

adverse effects of quarrying operations on identified significant places and

areas.”

(j) The overall purpose of this quarry management plan is to set out objectives and

measures to maintain and enhance environmental performance of Winstone‟s Hunua

Quarry while avoiding, remedying and mitigating adverse environmental effects.

These objectives and measures will be set in accordance with the principles and

policies of Winstone‟s Environmental Policy. This document is attached in Appendix

1.

1.2 Changes or amendments to the QMP

(a) Amendments to the QMP may be made by Winstone at any time. The Hunua Quarry

CLG and PDC will be notified of any significant changes to the QMP that are likely to

impact on the effects of quarrying beyond the boundary.

(b) A complete review of the QMP shall be made every five years by Winstone. The

Hunua Quarry CLG and PDC will be notified of the changes to the QMP resulting

from any review. At the time of review Winstone will consider any changes suggested

by the Hunua Quarry CLG or other resident(s).

2. BACKGROUND TO THE QUARRY

2.1 Location

Hunua Quarry is located in the Hunua Ranges, some 6km east of Papakura Civic Centre,

adjacent to the Hunua Gorge.

Figure 1 shows the location of Hunua Quarry.

This Quarry Management Plan deals with some 105ha of Winstone land in the Hays

Stream catchment and which is in the current Quarry Zone of the PDP.


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Figure 1 Location of the Site

Hunua Quarry

Papakura


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2.2 History and Ownership

Quarrying commenced in the Hunua Gorge on the land currently owned by Winstone in

1934. In 1955 Winstone purchased the main block of the Hunua site comprising some 101

hectares. The Symonds Hill resource south of the Middleton Road ridge was purchased in

1958. Other blocks of land were subsequently purchased, when they became available, to

provide a buffer around the land which was intended to be quarried. Figure 2 shows land

owned by Winstone.

2.3 Current Site Layout

Figure 3 shows the existing layout of the Hunua Quarry site including features such as the

site buildings, entrance/exit and processing plant. Figure 2 shows the area to be quarried in

the Hays Stream catchment.

2.4 Geology

The basement rocks which comprise the aggregate resource at Hunua Quarry consist of

hard, slightly metamorphosed siltstone to sandstone loosely termed “greywacke”. These

rocks were formed by deep burial of clay, silt and sand deposited on the ocean floor some

150 million years ago. During and after formation the rock was greatly deformed by earth

movements to produce the highly faulted and locally veined rockmass currently exposed in

the quarry.

Weathering of this greywacke varies from complete reduction of the greywacke to soil, to

fresh hard rock with minor limonite staining confined to the major joints.

Apart from the currently excavated quarry pit area, the greywacke is generally overlain by

a variable thickness of soft sandstones and siltstones of the Waitemata Group and some

thin ash beds. This soft rock, along with weathered greywacke, comprises the overburden

which must be removed prior to extraction of the rock for aggregate use.


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Figure 2 Land Owned by Winstone Aggregates at Hunua Quarry

Land Owned by Winstone Aggregates at Hunua Quarry

Indicative Area to be quarried in the Hays Stream Catchment


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Figure 3 Current Site Layout

Fixed Plant

Site Entrance


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2.5 Water Resources

The quarry property comprises approximately 251ha, of which 128ha is contained within

the Hays Stream catchment. The remainder lies within the Symonds Stream catchment.

All current quarry activities occur within the Hays Stream catchment. Hays Stream has a

catchment area, upstream of the quarry, of some 11.5 sq km, a little more than half of

which comprises the Papakura Water Supply dam catchment.

Hays Stream is identified in the Water Quality chapter of the Auckland Regional Policy

Statement as a water body with significantly degraded water quality. Adjacent land use

has impacted on the water quality within Hays Stream. This includes both rural and urban

runoff as well as reduced flows below the Papakura Water Supply dam.

The groundwater table within the greywacke rock in the quarry is at approximately

RL65m. To sustain quarry development, the pit will be excavated into the groundwater

table.

Adjacent to the quarry, Hays Stream is perched above the greywacke groundwater table.

Both the Waitemata cover sequence and greywacke rock mass generally have low to very

low permeabilities, although occasionally locally enhanced by faulting and fracturing.

Discontinuous and ephemeral perched water tables are present within the quarry area.

Currently all drainage within the quarry operational area has been modified. Water

resources within the quarry operational area are limited to stormwater runoff and minor

perched, ephemeral groundwater seepages.

Water for the washing of aggregate and dust suppression purposes is currently taken from

surface water storage ponds. The quarry has resource consents to take water directly from

Hays Stream and to pump groundwater from the pit. An agreement is in place to take

water from the Watercare pipeline from the Hays Stream dam.

2.6 Vegetation

A study of the entire development area and immediate surrounds has been carried out by

Bioresearches. The study shows that the vegetation within the Winstone Hunua property

forms a mosaic of highly variable habitats both in terms of their botanical value and their

value as wildlife habitats. The draft Vegetation and Landscape Management Plan (VLMP)

outlines in greater detail how the overall vegetation resource on site will be managed

overtime to maintain its integrity. A copy of the draft VLMP can be viewed by prior

arrangement with the Quarry Manager.

2.7 Archaeology

A survey of the entire Winstone Hunua Site and immediate surrounds was carried out R

Clough and Associates in 1999. During this survey, no archaeological features were

observed within Winstone Aggregates property boundaries. The topography of much of

the property suggests that the likelihood of archaeological sites relating to Maori

occupation is low. Even in the area of regenerating native vegetation sites are unlikely. In


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general, the property is steep, and has been modified by past quarrying activities, with

large portions of the property‟s natural landscape obscured by quarrying activities.

The presence of a fortified pa (archaeological site R12/663) immediately to the west of the

property indicates that Maori used the area and suggests that the property‟s central

ridgeline was likely to be part of a network of tracks formed by Maori, providing access

for instance to Pukekiwiriki Pa c.2km to the northwest (archaeological site R12/4). It is

also highly likely that the occupants of archaeological site R12/663 harvested the forest

resources (birds, fibres and wood), in the general area. However, the pa sites are not

located on Winstones property and will not be affected by the quarrying activity.

3. REGULATORY FRAMEWORK

3.1 RMA Hierarchy

(a) Use of the quarry is primarily governed by the provisions of the Resource

Management Act 1991. Activities in the quarry which are not permitted activities or

existing uses require resource consents in terms of the District Plan and any relevant

Regional Plans of the Auckland Regional Council.

(b) At a national level the Resource Management Act 1991 deals with the management of

natural and physical resources and establishes a hierarchy of plans and policy

statements.

(c) At a regional level the Regional Policy Statement considers issues of significance to

the region and provides policies for the management of land, sea and air resources.

The Auckland Regional Policy Statement contains a section on minerals. This section

has two objectives:

1. To avoid, remedy or mitigate the adverse effects on the environment of

mineral prospecting, exploration, extraction, processing and transportation.

2. To ensure that mineral extraction activities and mineral deposits which are

presently or potentially valuable for development in the Region are not

unnecessarily compromised, and the region’s need for rock material continues

to be met.

(d) Regional Plans can be prepared for particular natural resources, however it is not

mandatory for Regional Councils to produce these plans, except for the Regional

Coastal Plan. Currently the Auckland Regional Council‟s Sediment Control Plan is

the only Regional Plan directly relevant to the Quarry‟s operation.

(e) At a territorial level District Plans deal with land use issues and the effects of activities

on the environment. The PDP contains objectives, policies and rules that control land

use activities in the Papakura District.


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(f) Section 10 of the RMA also allows activities that have been legally established in the

past to continue operating in a similar way. Hunua Quarry maintains existing use

rights for quarrying activity.

3.2 Papakura District Plan (Quarry Zone and Adjoining zones)

Apart from an eastern block of land owned by Winstone, the zoning of the property is

Quarry Zone in the PDP. Figure 4 shows the zoning in the district plan. The eastern block

of Winstone land mentioned above is in the Rural Papakura zone and is not included in this

management plan.

The Quarry zone is intended to provide for the continuation of quarrying and associated

uses subject to environmental controls on the operation of the quarry and the ultimate use

of the land. The permitted activities in the Quarry zone are:

Any quarry activity or industrial activity and any activity ancillary to the

quarry activities.

Permitted activities are required to comply with district plan rules which affect:

Building height.

Quarrying within 30m of site boundaries.

Yards for industrial and commercial uses other than quarrying

Building coverage.

Quarry Management Plan for quarry extension outside previous quarry plans.

Noise received at or within 30m of dwellings.

Vibration and noise from blasting.

Dust control.

Waste and water pollution.

Topsoil removal.

In the Quarry Zone, individual native trees of listed species are protected. A resource

consent is required for irreparable damage to a tree such as tawa, taraire, miro, rewarewa,

puriri if the tree is higher than 6m or has a trunk circumference of more than 0.5m when

measured 0.5m from the ground.

Papakura District Council granted consent in November 1999 to clear an area of such trees

from the eastern side of the existing quarry pit for pit expansion. Vegetation management

on Winstone's land is comprehensively covered within the draft VLMP.


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Figure 4 Land Zoning in the Papakura District Plan


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3.3 Regional Council Consents

3.3.1 Water permits

Winstone holds consents for the following activities:

To take surface water from stored run-off for dust suppression and aggregates

washing in a quarry operation (Permit No. 938593, Auckland Regional Council)

To take surface water from Hays Stream for dust suppression and aggregate washing

in a quarry operation (Permit No. 936019, Auckland Regional Council)

To authorise the taking of groundwater for quarry dewatering and use in quarry

operations in accordance with Section 14 of the Resource Management Act 1991

(Permit No. 24893, Auckland Regional Council)

3.3.2 Air permit

Winstone Aggregates currently holds an air discharge permit (Permit No. 949046,

Auckland Regional Council).

3.3.3 Regional Landuse – Sediment Control

Winstone currently holds the following permits for sediment control;

To discharge groundwater and sediment-laden stormwater into Hays Stream at

discharge point J. (Permit No. 25032, Auckland Regional Council)


discharge point M. (Permit No. 25033, Auckland Regional Council)


discharge point C. (Permit No. 24908, Auckland Regional Council)

Winstone has developed a Sediment and Erosion Control Plan (January 2001) for the Hays

Stream Catchment area. This outlines site specific sediment control measures carried out

on site, in accordance with the company Environmental Management System. A copy of

the Sediment and Erosion Control Plan can be viewed by prior arrangement with the

Quarry Manager.

Winstone holds an additional permit (Permit No. 29408, Auckland Regional Council) for

Land Use Consent: Sediment Control, for the construction of an overburden disposal area

and access road at the „Hay Paddock‟. This permit applies to land within the quarry zone

and in the adjoining rurally zoned land owned by Winstone Aggregates located

immediately to the east of the quarry zone.

3.4 HASNO

In accordance with the Hazardous Substances and New Organisms Act 1996 Winstone

holds a Dangerous Goods Licence for Hunua Quarry. This licence authorises storage of

hazardous substances such as compressed gases and diesel required to be stored on site. A

copy of this licence is displayed in the quarry weighbridge office.


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4. QUARRY OPERATIONS (CURRENT AND FUTURE)

4.1 Overview

The purpose of the quarry operation is to extract the rock from the ground and process it

for use as building, construction and roading aggregates. The process of transforming rock

from the ground into aggregate products comprises firstly the stripping of vegetation, soil

and low quality material overlying the rock resource. The next step is to loosen and

fragment the rock from the ground with the use of explosives and/or heavy machinery.

The rock is then excavated by heavy machinery and either stockpiled or transported to the

plant for further crushing and screening into various sizes and grades for sale. The

following sections are intended to provide a more detailed description of these activities.

4.2 Description of Activities

The methods used in future quarry operations on the site are likely to be generally similar

to those used at present. However it is expected that specific machinery and methods of

extraction will vary in the future as technology develops and machinery and quarrying

techniques are replaced. The following activities broadly summarise the current and

proposed quarry operational activities that occur on the site:

4.2.1 Vegetation removal and site preparation

This involves removal of vegetation and any structure.

4.2.2 Soil stripping and stockpiling

As the quarry pit expands, soils and subsoils are stripped, transported and stockpiled using

motor scrapers, bulldozers and/or excavators and trucks. These materials may be used in

the construction of bunds for landscape enhancement and noise control, stored for future

rehabilitation work.

4.2.3 Overburden stripping and disposal

As the quarry pit expands, overburden materials are stripped, transported and deposited.

Such materials have insignificant commercial value but are required to be removed to

facilitate extraction of the aggregate resources, employing a similar range of machinery as

used for soil/subsoil excavation.


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4.2.4 Rock removal

The quarrying of softer aggregate resource types uses excavators and/or bulldozers and

loaders to excavate and load materials onto trucks for transport to the processing plant,

stockpiles or offsite. The quarrying of harder rock requires drilling and blasting with

explosives, followed by loading onto trucks using excavators or loaders for transport to the

processing plant, stockpiles or offsite.

Hunua Quarry uses drilling and blasting practices typical of New Zealand operations of a

similar scale. All blasts are designed and managed by trained and qualified personnel

taking into account a variety of factors including District Plan requirements. Typically at

Hunua blasting holes are drilled with 102mm diameter. These holes are loaded with either

bulk or bagged ANFO (Ammonium Nitrate and Fuel Oil) and are currently initiated with

non-electric detonators to reduce the potential for vibration and air blast.

4.2.5 Processing rock

Rock is processed into aggregate products, using crushing, screening, washing, blending

and conveying machinery. The products are moved by trucks, loaders or conveyor to

storage bins or stockpiles.

Winstone has a new aggregate processing plant that is capable of producing a full range of

aggregates. The plant has been specifically designed to maximise the Hunua rock resource

while at the same time minimising the potential for adverse environmental effects such as

noise and dust.

Special environmental controls include:

Housing the main processing plant to contain the potential effects of noise and dust.

Covering all potentially dust generating conveyors.

Spray bars at potentially dust generating material transfer points.

Mist sprays beneath all crushers.

The plant has been designed with the capability of washing semi-processed and finished

aggregate products and a water control and treatment system has been incorporated into the

plant to manage aggregate washings. This system is generally a closed circuit system with

only makeup water added to compensate for water lost through evaporation or soaked up

the aggregate products themselves.

From time to time depending on market conditions, mobile aggregate processing plants are

used at Hunua Quarry to supplement the fixed plant operation. These plants are subject to

the same environmental controls as all other operations on site and are typically located in

areas where adverse effects can best be avoided.

4.3 Storage and distribution

Aggregate products are transported around the site with the use of a range of mobile plant

and equipment. Wheel loaders are used to load customers trucks for distribution off site.


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4.4 Water management

Water management is a term used to describe all activities carried out on site to control and

utilise surface water runoff, process water and groundwater resources. It includes a range

of activities such as the construction and maintenance of structures such as drains, ponds,

diversion channels and sumps through to the implementation of water monitoring

equipment and pumps. Hunua Quarry has a separate Sediment and Erosion Control Plan

(January 2001) that sets out the activities that will be carried out at the site over time.

4.5 Rehabilitation and landscape works

Where appropriate and practicable, excavated and disturbed areas are rehabilitated with the

placement of overburden and soils and then re-vegetated with suitable species. The site

has a separate VLMP that illustrates and describes how rehabilitation of different areas of

the quarry will occur over time as the quarry develops.

5. QUARRY DEVELOPMENT

5.1 Quarry Pit Development

Figure 5 shows the indicative short term staging of quarry development, and how Winstone

presently proposes to develop the quarry.

The staging of development at the quarry will ultimately be dependent on a number of

external factors outside Winstone‟s control e.g. the state of the market, the level of

knowledge of subsurface geology, the level of sales and production capacity limits. Figure

5 only illustrates how Winstone currently anticipates development to occur at the quarry.

The quarry pit design has been carried out by qualified mine design engineers with input

from registered geotechnical engineers to optimise quarry pit development and ensure the

safety of the cut slopes. Typically Hunua Quarry is developed with a series of 15 metre

high benches.

5.2 Overburden Stripping and Disposal

Overburden will continue to be removed from above the quarry faces as they advance

towards the east and south of the current quarry pit. These materials will be transported on

internal haul roads to overburden disposal areas where they will be placed and treated

according to the relevant design requirements.

Figure 6 details the location of the main Hunua overburden disposal area together with

potential future overburden disposal areas.


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The overburden disposal areas will be designed to take into account the surrounding

topography, surface water drainage, geotechnical constraints and proposed end use. The

volume of material that can be contained in the site has been balanced with the stripping

requirements of the quarry pit.

The overburden disposal area immediately to the east of the quarry is known as the Hay

Paddock Area, see Figure 7. This area is partly within the quarry zone and partly within

the adjoining rural zone. Activities within this area the subject of a resource consent

application to Papakura District Council at the time of this December 2004 revision.

Figure 5 Quarry Pit Development showing Stage Outline

1998 Pit Extension

2001 Pit Extension

2004 /2005 Pit Extension


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Figure 6 Quarry Pit Development Showing Overburden Disposal Areas

Overburden Contoured & Planted 1998 - 2001

Overburden Contoured & Planted 2001 - 2005

Other areas of site planted 1998 - 2001


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Figure 7: Location of Hay Paddock Overburden Disposal Area

Hunua

Quarry

Hay

Paddock

Area

KEY Property Boundary Quarry Zone Boundary Hay Paddock Earthworks


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6. ENVIRONMENTAL OBJECTIVE AND MANAGEMENT

MEASURES

6.1 General Environmental Objective

To manage the extraction and processing of a valuable aggregate resource while

avoiding, remedying or mitigating adverse effects on the environment and

enhancing environmental performance wherever practicable.

6.2 Explanation

(a) The continued and efficient extraction of aggregate resources in Auckland Region is

identified in the District Plan as an important resource issue. At the same time,

Winstone has an obligation to ensure that the environment is not detrimentally affected

by the continued operation of the quarry.

(b) Parts 3 and 4 of Winstone‟s Environmental Policy (see Appendix 1) call for

management to continuously improve activities and to lift standards and performance.

6.3 Measures to achieve the general environmental objective

6.3.1 Resource management framework

(a) To achieve the general environmental objective Winstone will also continue to

operate within the bounds of the legislative framework for resource

management in New Zealand as summarised above.

6.3.2 Management measures

(a) Winstone‟s management measures are provided here to give an insight into

how Winstone intends to manage this quarry. It can be expected that these

management measures will change over time as Winstone strives to achieve

continuous improvement in environmental performance.

(b) The current management measures and procedures are explained in sections

6.3.4 - 6.3.5 below. The company recognises the effects its operations may

have on the environment and is continually searching for ways in which these

effects can be avoided, remedied or mitigated against.


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6.3.3 Environmental policy

(a) Winstone‟s Environmental Policy (see Appendix 1) sets out the overall goals

for the company‟s environmental performance. The environmental policy is

used in the following ways to make staff and visitors on site aware of the

importance of good environmental performance;

displayed to personnel on site

displayed to the public in reception areas

referred to when setting annual objectives and targets

6.3.4 Environmental management system

(a) Winstone Aggregates has in place an Environmental Management System

(EMS) that is based upon the framework established by ISO 14001-

Environmental Management Systems - Specification with Guidance for Use.

(b) The EMS is a tool that ensures accountability for environmental performance,

providing a management framework that encourages openness and

environmental improvement at all operational sites.

(c) Winstone‟s Environmental Management Manual (EMM) documents the EMS

and ensures that the Environmental Policy is implemented at operational sites.

The Manual covers such things as:

legal requirements that each site must adhere to;

setting environmental targets and objectives for individual quarries;

procedures for management of effects on the environment;

management structure and responsibilities;

record keeping of each quarry‟s environmental effects;

communication including environmental reporting and information sharing;

review of the EMS and Environmental Policy.

(d) Environmental Record and Procedures Manuals (ERPMs) are kept at each site

and contain environmental diaries that are used to record the results of

compliance monitoring, complaints, objectives and targets. Regular reporting

of compliance to senior management enables appropriate action to be taken.

Monthly environmental reports are forwarded to the General Manager, the

Business Unit Manager and the Environmental Coordinator by each site

manager.

(e) Records of all verbal and written complaints will be maintained in the site

ERPM. The records will be kept for no less than five years and will include:

name and details of complainant;

description of complaint;

any follow-up action.


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(f) Internal site inspections by senior management are made regularly for each

quarry site. The purpose of these inspections is to reinforce the importance of

good environmental performance and continual improvement.

6.3.5 Quarry design

(a) To achieve the general environmental objective Winstone will design the

quarry in a way that maximises the extraction of the aggregate resource within

the property boundary in accordance with resource consents, district and

regional plans and geotechnical constraints.

(b) The operation of the quarry is regulated under the Health and Safety in

Employment (HSE) Act 1992 and more specifically the Mining Administration

Regulations 1996. These regulations are administered by The Ministry of

Labour through Occupational Safety and Health (OSH).


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7. ENVIRONMENTAL EFFECTS

7.1 Background

Quarrying has the potential to have a range of adverse environmental effects. This section

identifies these effects and sets out the relevant environmental standards that the quarry has

to achieve and the measures and methods for how it will achieve these standards.

The standards taken from the District Plan provisions are shown in italics below.

7.2 Noise

7.2.1 Noise effects

(a) Noise is generated by a number of different activities carried out at the quarry

including: drilling; rock breaking; crushing; extraction; trucks; machinery and

blasting. If noise is not controlled at the quarry there is the potential for noise to

cause a nuisance to people who live near the quarry.

(b) It is important to note that blast vibration and noise generated by blasting (air blast

overpressure) are treated as separate effects within this document.

7.2.2 Noise objective

To avoid, remedy or mitigate adverse effects of noise generated by on-site activity

on the residents of dwellings and on business activities in the vicinity of the

quarry.

7.2.3 Explanation of noise objective

Excessive noise of sufficient duration or continuity can be detrimental to public health and

to the amenity of adjacent land. The noise objective is an intention by Winstone to keep

noise levels from the quarry site at an acceptable level and to provide the community with

an assurance on the level of noise that they can expect from the quarry and its operations.

7.2.4 Noise performance standards

Except for the Hunua Quarry Aggregate Resource Protection Area, the L10 noise level as

measured at or within 30 metres from any dwelling shall not exceed the following limits:

Monday to Friday between the hours of 0700 – 1800 and Saturday between the hours of 0700 –

1700.


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55dBA

Al all other times including Sundays and Public Holidays – 45 dBA.

Noise – Hunua Quarry Aggregate Resource Protection Area

The L10 noise level measured at or within 30 metres from any occupied dwelling existing at 1

January 2001 shall not exceed the limits above.

The L10 noise levels as measured at any point on the Quarry Effects Line as shown on figure [8]

shall not exceed the following limits:

Monday to Friday between the hours of 0700-1800 and Saturday between the hours of 0700-

1600.

65dBA

At all other times including Sundays and Public Holidays - 45 dBA.

The noise levels shall be measured and assessed in accordance with the requirements of New

Zealand Standard NZS 6801: 1991 Measurement of Sound and New Zealand Standard NZS

6802: 1991 Assessment of Environmental Sound.

The noise shall be measured with a sound level meter complying with the International Standard

IEC 651 (1979): Sound Level Meters, Type 1.

Any construction work on site will be carried out in compliance with the New Zealand Standard

for Construction Noise NZS 6803: 1999.

7.2.5 Measures to implement noise objective

To comply with the District Plan and to keep noise to an acceptable level Winstone implements a

range of operational practices that include the following measures;

(a) Managing the time and location of particularly noisy operations around the site to

ensure compliance with the performance standards.

(b) While the company prefers to avoid operations on Sundays, work which complies

with the noise levels for Sunday permitted by the District Plan may be necessary to

meet particular contract obligations.

(c) The majority of fixed processing plant, excluding conveyors will be housed within

structures that reduce the noise level at the boundary of the quarry.

(d) Machinery will be regularly maintained to ensure that noise produced from

machinery is kept to a practicable minimum.


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(e) Bunds have been constructed where appropriate on quarry boundaries to reduce the

effects of noise beyond the boundary of the quarry.

(f) To ensure that the noise performance standards set in the District Plan are met,

monitoring on representative occasions will be carried out using appropriate

equipment, methods and personnel.


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Figure 8 Quarry Effects Line Map


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7.3 Ground vibration and air overpressure

7.3.1 Effects of Blasting

Blasting is used in the quarry as a means of fragmenting rocks prior to processing.

Blasting causes noise, vibration and air overpressure (air blast noise). These effects have

the potential to have a “startling effect” on people, especially when people are not

expecting the blast. Other potential effects of blasting are dealt with in the section on

discharges to air.

Ground vibration and air overpressure from blasting also have the potential, if not

controlled, to adversely affect the structural stability of buildings and potential to adversely

affect the amenity value of land in the vicinity of the quarry.

7.3.2 Vibration and Air Overpressure Objective

To avoid, remedy or mitigate adverse effects of vibration and air overpressure (blast

noise) from blasting on neighbouring people and buildings.

7.3.3 Explanation of Objective

The uncontrolled use of explosives in terms of noise, intensity and duration would have an

unacceptable effect on the amenity values of adjoining residential land. This vibration and

air over pressure objective is an intention by Winstone to keep the effects of vibration and

air overpressure to an acceptable level using best practicable means and therefore provide

an assurance to the community that the effects of blasting are being controlled.

7.3.4 Measures to Implement Vibration and Air Overpressure Objective :

To keep vibration and air overpressure to an acceptable level Winstone implements a range

of operational practices that include the following :

(a) Blasting shall only be carried out between 9:00am - 5:00pm Monday to Friday and

will be restricted to two times per day except where necessary for emergency or

safety reasons. Typically blasting is carried out between 10:00 – 10:30, 2:00 – 2:30

and 4:30 – 5:00.

(b) If blasting is to occur at an irregular time or for emergency or safety reasons,

potentially affected neighbours will be notified whenever possible.


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(c) Records will be maintained for each blast including:

the time of the blast;

location of the blast;

weather conditions;

total charge weight;

maximum instantaneous charge;

volume of rock blasted;

position of any monitoring; and

distance from blast to monitoring positions.

(d) Winstone will undertake monitoring of representative blasts by reliable and

appropriate methods to ensure the set limits for vibration and air overpressure are not

exceeded. These records shall be made available to Papakura District Council on

request.

(e) Removing rock, where practicable, with an excavator by free digging or ripping

instead of blasting.

(f) Each blast will be designed and supervised by an appropriately qualified person and

shall take into account:

general geological conditions;

cavities and fissures;

distance to the boundary;

maximum instantaneous charge;

direction of initiation;

orientation of the face; and

weather conditions.

(g) The effects of air overpressure are controlled by:

use of good quality stemming material;

maintenance of correct stemming height;

maintenance of adequate burden on all free faces;

optimisation of drill patterns to reflect good geometrical design;

optimisation of the delay sequence to maintain adequate relief;

minimisation of secondary blasting; and

close examination of the face for weak seams and clay bands where

explosive products may vent to free air.

All the factors above individually or in conjunction with each other can influence the level

of effects produced by any one blast. Ensuring that all these factors are taken into

consideration when designing a blast will increase the level of certainty into what the

potential vibration and air overpressure effects will be.

(h) Records will be maintained of all complaints relating to blasting including:


description of complaint; and



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7.3.5 Blasting performance Standards

Vibration and Airblast

(a) For the Hunua Quarry Aggregate Resource Protection Area, the noise created by

the use of explosives measured at a notional boundary of 20m from any occupied

dwelling existing as at 1 January 2001 shall not exceed a peak overall sound

pressure of 128dBL peak.

(b) For the Hunua Quarry Aggregate Resource Protection Area, the noise created by

the use of explosives measured at any point on the Quarry Effects Line as shown

on figure [8] shall also not exceed a peak overall sound pressure of 133dBL peak

(97.5% compliance) and a maximum of 140 dBL peak (99% compliance).

(c) All blasting shall be restricted to between 9.00 am and 5.00pm Monday to Friday

except where necessary because of safety reasons.

(d) Blasting shall be confined to two occasions per day except where necessary for

safety reasons.

(e) Where because of irregular or infrequent nature of blasting startling of

neighbouring tenants is likely than adequate public notification shall be given to

those affected by this.

(f) For the Hunua Quarry Aggregate Resource Protection Area, when blasting the

limit of particle velocity (peak particle velocity) shall not exceed the following

limits:

when measured on any foundation of an adjacent building not connected

with the quarry site existing at 1 January 2001; 20 mm/s for commercial

buildings (97.5% compliance), or 5 mm/s for dwellings and buildings

intended for domestic use (97.5% compliance), and a maximum of 10 mm/s

(99% compliance).

when measured at any point on the Quarry Effects Line as shown on Figure

[8 ] 20 mm/s (97.5% compliance).

Peak particle velocity means the maximum particle velocity in any of three

mutually perpendicular directions. The units are millimetres per second (mm/s).

Explanatory Note

The above standard, requires the peak particle velocity on any foundation of an

adjacent building outside the ARPA Area to meet the compliance level at that

point. It is recognised that the person carrying out the monitoring might not

have the right of access or the ability to monitor directly on the foundation.

Measurement should normally be carried at a suitable point(s) representative of


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the adjacent building and demonstrate that ground vibrations are below the

levels required in the Rule at the building foundation.

(g) Monitoring vibrations and air overpressure (air blast).

(h) Instruments to measure vibrations and air overpressure and methods of

measurement shall comply with the Australian Standard AS2187.2 1993 applying

measurement and assessment in a statistical manner.

(i) Monitoring shall be sufficient to assess compliance with the Rule at all likely

affected sites.

7.4 Traffic

7.4.1 Background

The effects of traffic on public roads outside the quarry site are generally beyond the

control of Winstone and outside the scope of the District Plan. Winstone will however

take any practicable steps to reduce the effects of traffic directly related to the quarry

operation. These effects are associated with noise, dust, safety and congestion.

7.4.2 Traffic objective

To minimise the adverse effects of traffic, directly generated by quarrying

activity, on the environment, where practicable.

7.4.3 Explanation of traffic objective

(a) This objective is an intention by Winstone to avoid, remedy or mitigate the

adverse effects associated with quarry traffic. The performance standards

associated with achieving this traffic objective are inclusive in those standards

dealing with the specific effects of noise and dust. The traffic objective is an

assurance to the community that Winstone will control the effects of traffic

within its site and where practicable outside the quarry site.

7.4.4 Measures to implement the traffic objective

(a) Hunua Quarry is authorised to operate on a 24 hours basis, subject to meeting

relevant performance criteria specific in Papakura District Plan (as at 6 August

2008 as referred to by Certificate of Compliance ref 9354) such as limits

relating to operational noise. This means that operational activities associated

with product dispatch will occur at Hunua Quarry during night time hours.

These night time operations are a critical component of the quarry‟s activities

and are necessary to meet the demand for aggregate throughout the region.


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(b) While the opening of the quarry for general sales will generally be restricted to

the hours set out below, large contract jobs and cartage by Winstone‟s own

fleet may take place at all times.

Monday to Friday 6:00am – 5:30pm

Saturday 6:00am – 4:00pm

All other times As described above

Hours may occasionally vary depending on customers‟ requirements.

(c) All Winstone owned and operated vehicles will be regularly maintained and

checked to ensure that appropriate noise suppression devices are installed and

operating effectively.

(d) Any customer whose vehicle is noted as having excessive emissions due to

lack of maintenance will be requested to rectify the problem and warned that

they may be refused products on their next visit if the problem persists.

(e) Winstone loader drivers will be appropriately trained to help ensure that

customers trucks are loaded securely. All trucks leaving the quarry with loads

of quarry products will be checked for insecure loads. This will also help

reduce the risk of quarry products being spilled on public roads. It is however

ultimately the responsibility of the individual truck drivers to make sure their

load is secure before they drive on a public road.

(f) A wheel wash will be used to spray truck wheels as they leave the quarry site.

This will help reduce the risk of dust being carried onto public roads by trucks.

7.5 Dust (Air quality)

(a) Dust can be generated by a variety of different activities that are carried out at the

quarry site including: drilling; rock breaking; crushing; extraction; trucks; machinery

and blasting.

7.5.1 Air Quality objective

To avoid, remedy or mitigate adverse nuisance or amenity effects of dust from

quarry operations beyond the boundaries of the quarry site.

7.5.2 Explanation of air quality objective

Of the potential discharges to air, particulate emissions of dust have the greatest potential

for off-site effects. However, provided the operation site is well controlled and the


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activities well managed, particulate emissions can be reduced to a level where any adverse

health or nuisance effects, or damage to vegetation will not occur.

7.5.3 Measures to implement air quality objective

(a) Locating the fixed processing plant away from quarry boundaries (Figure 3).

(b) The fixed processing plant is clad in areas where dust generation could become a

nuisance.

(c) Potential dust generating conveyors are covered where practicable to contain dust.

(d) Fitting exposed transfer points with fixed water sprays to suppress dust emissions

wherever practicable.

(e) Large volumes of water are maintained on site and are available for dust suppression

purposes.

(f) Areas of exposed material with dust generating potential (e.g. clay banks) are kept to

a practicable minimum.

(g) A water tanker is used to spray water on working areas during dry and windy

weather conditions.

(h) Potentially dusty activities are not carried out when weather conditions give rise to

offsite dust emissions.

(i) Blasting will be restricted if windy conditions are likely to carry visible dust

emissions beyond the quarry boundary where they could create a nuisance.

(j) Minimising dust emissions from blasting by sequential firing and using minimum

force.

(k) Revegetating areas that will not be further disturbed as soon as possible.

(l) Efficient extraction of dust on drilling equipment.

(m) Proper maintenance and tuning of the vehicles and equipment also assists in avoiding

any off-site effects.

(n) A wheel washing facility is used at the exit to reduce the potential of material from

trucks wheels to be deposited on the roadway outside the site.

(o) Good blasting practice, including using waterproof explosives in areas where

groundwater levels are high, to avoid the degradation of the explosive, will minimise

incomplete combustion and any associated NOx emissions.

(p) The quarry manager or his or her nominee shall record daily:


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visual emission of dust;

sources of visual emission of dust;

measures initiated in response to visual emission of dust to prevent recurrence

or mitigate effects;

water cart use (yes/no);

weather conditions (wind strength and direction, rainfall).

7.5.4 Air Quality Performance standards

The air permit for the site states:

(a) That the processes shall be operated by the Consent Holder in such a manner and

the operations supervised and the plant maintained so as to ensure that discharges of

contaminants to air are kept to a practicable minimum.

(b) That beyond the boundary of the site there shall be no odour, dust or fume caused by

discharges from the site which, in the opinion of an enforcement officer, is noxious,

offensive or objectionable.

(c) That no discharges from any activity shall give rise to visible emissions, other than

water vapour and steam, to an extent which, in the opinion of an enforcement officer,

is noxious, offensive or objectionable.

(d) That over the period 1 November to 30 April each year the consent holder shall

undertake monitoring of total suspended particulate in ambient air in the vicinity of

the site.

(e) That without prejudice to the generality of Conditions 4 and 6, if the monitoring

shows that the total suspended particulate in ambient air at or beyond the boundary

of the site, as measured in accordance with Condition 17, exceeds 100 micrograms

per cubic metre as a 24 hour average, an investigation shall be initiated by the

Consent Holder as to the probable causes of the exceedence.

(f) That, if the cause of the elevated levels of total suspended particulate is identified as

being an activity undertaken on the Consent Holder’s site, then as far as practicable,

action shall be taken by the Consent Holder to reduce those discharges to the

satisfaction of the Manager.

(g) That any results of total suspended particulate in ambient air tests showing

exceedences of the prompt given in Condition 18 shall be reported by facsimile to the

Manager as soon as practicable. A summary of all monitoring results, including

references to wind and rainfall data, and any remedial action taken shall be

submitted to the Manager by 1 June each year.


36

(h) The Consent Holder shall continuously record and be able to make available wind

speed, wind direction and rainfall data.

The District Plan provisions states that:

(i) Quarry owners and operators must ensure that adequate measures are taken to

control the emission of dust from all parts of the site.

7.6 Landscape and visual

(a) Quarrying can change the landscape and subsequently affect the visual amenity of an

area. Activities carried out within the quarry can also have visual effects on

neighbouring residents.

7.6.1 Landscape and visual objective

To minimise adverse landscape and visual effects of the quarry operations on the

surrounding community.

7.6.2 Explanation of landscape and visual objective

The quarry has been an existing activity on the site for a considerable length of time. It is

Winstone‟s intention to minimise the landscape and visual effects of the quarry operations

on the surrounding community and provide an assurance to neighbours that Winstone will

take practicable steps to carry this out.

7.6.3 Performance standards

(a) The District Plan states the following with regard to yard in the Quarry Zone:

No quarrying shall be carried out within 30 metres of each site boundary unless the

appropriate resource(s) consent is obtained.

7.6.4 Measures to implement the landscape and visual objective


37

(a) A VLMP is being developed for the site which sets out how the vegetation and

landscape will be managed over time at the quarry. This document should be referred

to for a comprehensive description of all measures that will be taken on site to achieve

the landscape and visual objective.

(b) Where appropriate and practicable new buildings will be designed in a way that

minimises the visual impact on neighbouring sites. For example colour, height,

screening and relationship to the topography of the surrounding area.

(c) Install and manage operational and access lights to avoid unnecessary light spill in the

locality.

(d) Provide earth mounding and vegetation screening to mitigate visual effects of quarry

operations and on-site truck routes where practical.

7.7 Rehabilitation and End Use Options

There are many options available for progressive rehabilitation and for end use once

quarrying has been completed at the site. Winstone does not know what the end use for the

quarry will be at this stage.

7.7.1 Current Rehabilitation and End Use Objectives

To design and develop landforms which enable effective short-term rehabilitation

during the operation of the quarry and to consider practicable options for end use of

the quarry site.

7.7.2 Explanation of Rehabilitation and End Use Objectives

The completion of quarrying is currently predicted to be more than 50 years away. This

fact makes it very difficult and impracticable to make a final decision on how rehabilitation

should take place and what the end use shall be.

7.8 Hazardous Substances

This section of the management plan deals with issues relating to the release of hazardous

substances from storage facilities or during their use, transport or disposal within the

quarry site. The relevant objective is:

7.8.1 Hazardous substances objective

To avoid, remedy or mitigate the potential for adverse effects on the environment of

the storage, use, disposal and transportation of hazardous substances such as fuels,

oils or materials used for blasting.


38

The significant hazardous substances that are currently stored on the site are diesel, oils,

compressed gasses and explosives.

7.8.2 Measures to meet the Objective

(a) The storage and/or the production of only the necessary quantities of material for

the operation of the quarry.

(b) Based on experience at other quarries, the storage requirements have been

determined such that inventory control and “just in time” delivery will ensure that

only the imminent operational requirements are stored on the site.

(c) All transport, storage and operating conditions meet the requirements of licences

under the Hazardous Substances and New Organisms legislation and the relevant

standard for the transportation of hazardous substances NZS 5433.

(d) Until regulations are developed under the HSNO Act, the transitional regulations

stemming from the Explosives Act 1957 and the Dangerous Goods Act 1974 will

be applicable. The relevant requirements will be complied with to the satisfaction

of inspectors from the Department of Labour and Papakura District Council.

(e) Explosives and detonators are generally not stored on site.

(f) Fuel, lubricant and waste oil storage, dispensing and operating facilities are

designed and operated in such a way that contamination of soil and water is

avoided as far as practicable.

(g) All bulk liquid storage tanks will be in or adjacent to the Workshop. Heavy tyred

vehicles are refuelled on a concrete pad adjacent to the diesel bulk storage tank.

Heavy tracked vehicles are refuelled in place in the pit. Rain falling on this

refuelling pad is directed to an oil separator before entering the stormwater

drainage system. Oil separators are cleaned out on a regular basis.

(h) Drums and smaller containers are stored on bunded pads in the workshop., Drip

trays are provided for any in use, in and around the workshop.

(i) Compressed gases in the workshop are stored in racks and are suitably restrained

when in use.


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7.9 Tangata Whenua

Objective

To operate the quarry in a manner which recognises and provides for the

relationship of Maori and their culture and traditions with their ancestral lands,

water, sites, wahi tapu and other taonga.

7.9.1 Measures to Implement Objective

Tangata whenua will be identified and consultation will be undertaken to agree on a

procedure to deal with any discovery of koiwi and taonga.

Procedures such as the following would be followed should evidence or indications of

koiwi or taonga be discovered :

Immediately koiwi or taonga have been discovered, activity around the area of

the discovery will cease;

An archaeologist will immediately arrange to secure the area to ensure that the

suspected koiwi or taonga remain untouched;

Tangata whenua and the Historic Places Trust will be advised that it is

suspected that koiwi or taonga have been uncovered on the site;

A representative of tangata whenua will be asked to contact relevant kaumatua

who are to guide and advise Winstone as to the course of action to be followed

and to immediately advise the archaeologist of the identity of the kaumatua and

such other details as may be appropriate in the circumstances;

The archaeologist will arrange staff/Papakura District Council to meet and

guide kaumatua, police, DOC or Historic Places Trust representatives to the

site, and assist with any requests that they may make;

If the kaumatua are satisfied that the koiwi or taonga are of Maori origin the

kaumatua will implement appropriate procedures and will communicate this to

Winstone, NZ Police and other relevant parties;

Winstone will ensure that the kaumatua are given the opportunity to perform

karakia and other religious or cultural ceremonies and activities considered

appropriate in accordance with tikanga Maori (Maori custom and protocol);

and

Winstone will make available on their property other suitable, secure non

working areas for the reburial of koiwi or taonga if tangata whenua so wish.


40

Definitions

“Koiwi” means human remains such as skeletal material.

“Taonga” refers to cultural artefacts such as implements, weapons or decorations

traditionally and historically utilised by tangata whenua and includes parts and remains

thereof.


41

8. MONITORING

(a) The site Environmental Records and Procedures Manual (ERPM) contains all

relevant details relating to the carrying out of all required monitoring including:

when it has been carried out;

where it is has been carried out;

how it has been carried out; and

the monitored results.

(b) The ERPM shall also contain records of all complaints received relating to

environmental effects associated with the quarry operation:

The record shall include the following information:


description of complaint; and


(c) The ERPM is available for inspection only at the quarry site, following prior

arrangement with the quarry manager.

8.1 Dust

(a) The quarry manager or his nominee shall record daily:

› visual emission of dust,

› sources of visual emission of dust;

› measures initiated in response to visual emission of dust to prevent recurrence or

mitigate effects.

› water cart use (yes/no); and

› weather conditions (wind strength and direction, rainfall).

(b) That over the period 1 November to 30 April each year the consent holder shall

undertake monitoring of total suspended particulate in ambient air in the vicinity of

the site.

(c) That without prejudice to the generality of Conditions 4 and 6, if the monitoring

shows that the total suspended particulate in ambient air at or beyond the boundary

of the site, as measured in accordance with Condition 17, exceeds 100 micrograms

per cubic metre as a 24 hour average, an investigation shall be initiated by the

Consent Holder as to the probable causes of the exceedence.


42

(d) That, if the cause of the elevated levels of total suspended particulate is identified as

being an activity undertaken on the Consent Holder‟s site, then as far as practicable,

action shall be taken by the Consent Holder to reduce those discharges to the

satisfaction of the Manager.

(e) That any results of total suspended particulate in ambient air tests showing

exceedences of the prompt given in Condition 18 shall be reported by facsimile to

the Manager as soon as practicable. A summary of all monitoring results, including

references to wind and rainfall data, and any remedial action taken shall be submitted

to the Manager by 1 June each year.

(f) The Consent Holder shall continuously record and be able to make available wind

speed, wind direction and rainfall data.

8.2 Noise (excluding blasting)

(a) To ensure that the noise performance standards set in the District Plan are met,

monitoring will be carried out using appropriate equipment, methods and personnel.

The noise monitoring regime will include:

Monitoring on representative occasions.

Prior to any change in the quarry operations occurring that could result in

greater noise effects beyond the boundary, a reassessment of the noise from

quarry operations shall be carried out, if the changes have not already been

predicted or modelled.

8.3 Ground vibration, air overpressure (blast noise) and fly rock

(a) Records will be maintained for each blast including:

the time of the blast;

location of the blast;

total charge weight; and

maximum instantaneous charge.

(b) Winstone will undertake monitoring on representative occasions by reliable and

appropriate methods as set out in the District Plan to ensure the set limits for

vibration and air overpressure are not exceeded. These records shall be made

available to Council on request. Vibration monitoring does not necessarily have to

be undertaken on the foundation of adjacent buildings provided that the quarry

operator can safely extrapolate the measurements taken from the chosen monitoring

point to the foundation of adjacent buildings.


9. APPENDICES

Documents

Hunua Quarry Management Plan · Hunua Quarry Management Plan This Quarry Management Plan (QMP) is a non-statutory document that has voluntarily ... (BLAST NOISE) AND FLY ROCK