westwood quarry upgrade– bridgenorth road – environmental … pastoral pty... · 2016. 5....

Westwood Quarry Upgrade– Bridgenorth Road – Environmental Effects Report

Prepared By: Barry Williams

Date: 22 April 2016

Issue Date Recipient Organisation

Draft 1 15 April 2016 Mr Andrew Johnston Sunnyside Pastoral Pty Ltd

Draft 1 18 April 2016 Mrs Danielle McPhail Environment Protection Authority

Final 22 April 2016 Mrs Danielle McPhail Environment Protection Authority

Westwood Quarry Upgrade – Environmental Effects Report 22 April 2016

Integrated Land Management and Planning | Table of Contents 2

TABLE OF CONTENTS

Table of Contents .................................................................................................................................... 2 Figures ..................................................................................................................................................... 3 Tables ...................................................................................................................................................... 3 Plates ....................................................................................................................................................... 3 Part A - Proponent Details ...................................................................................................................... 4 Part B – Project Description .................................................................................................................... 4 1 Description of Project ..................................................................................................................... 4

1.1 Extraction ................................................................................................................................ 4 1.2 Processing ............................................................................................................................... 4 1.3 Cartage .................................................................................................................................... 5

2 Project Area .................................................................................................................................... 6 2.1 Project site .............................................................................................................................. 6

3 Map and site plan ........................................................................................................................... 8 3.1 Site works .............................................................................................................................. 12

4 Rationale and alternatives ............................................................................................................ 12 Part C Potential environmental effects ................................................................................................. 13 1 Flora and Fauna ............................................................................................................................. 13

1.1 Flora values ........................................................................................................................... 13 1.2 Fauna values ......................................................................................................................... 14

2 Rivers creeks wetlands and estuaries ........................................................................................... 14 2.1 Erosion and sediment control ............................................................................................... 16

2.1.1 Stormwater runoff calculations .................................................................................... 16 2.2 Hydrocarbons ........................................................................................................................ 18

3 Significant areas ............................................................................................................................ 18 4 Air emissions ................................................................................................................................. 18 5 Liquid effluent ............................................................................................................................... 19 6 Solid waste .................................................................................................................................... 19 7 Noise emissions ............................................................................................................................. 20 8 Transport impacts ......................................................................................................................... 21 9 Other off-site impacts ................................................................................................................... 21 10 Hazardous substances and chemicals ....................................................................................... 22 11 Site contamination .................................................................................................................... 22 12 Sustainability and climate change ............................................................................................ 23 13 Cultural heritage ....................................................................................................................... 23 14 Sites of high public interest ....................................................................................................... 23 15 Rehabilitation ............................................................................................................................ 24

15.1 Immediate rehabilitation ...................................................................................................... 24 15.2 Progressive rehabilitation ..................................................................................................... 24 15.3 Decommissioning and rehabilitation .................................................................................... 24

Part D Management Commitments ...................................................................................................... 25


Integrated Land Management and Planning | Figures 3

Part E Public Consultation ..................................................................................................................... 26 16 References ................................................................................................................................ 26 17 Meander Valley Interim Planning Scheme 2013 ....................................................................... 27 18 Appendices ................................................................................................................................ 29

18.1 Appendix 1 – Traffic Impact Assessment – RJK Consulting Engineers ...................................... 18.2 Appendix 2 – Unanticipated Discovery Plan – Aboriginal Heritage Tasmania ..........................

FIGURES Figure 1: Schematic of processing operation .......................................................................................... 5 Figure 2: Locality Plan ............................................................................................................................. 8 Figure 3: Aerial image ............................................................................................................................. 9 Figure 4: Mining plan (Google Earth image) ......................................................................................... 10 Figure 5: Cross sections through development stages (exaggerated scale) ......................................... 11 Figure 6: CFEV report map with ICV of streams .................................................................................... 15

TABLES Table 1: Proponent details ...................................................................................................................... 4 Table 2: Operation details ....................................................................................................................... 5 Table 3: Equipment in the process (actual equipment will vary from time to time).............................. 6 Table 4: Property details ......................................................................................................................... 6 Table 5: Climate data for closest weather station .................................................................................. 7 Table 6: Biophysical data ........................................................................................................................ 7 Table 7: Records of listed flora species within 5 kilometres ................................................................. 13 Table 8: Records of listed fauna species within 5 kilometres ............................................................... 14 Table 9: Time of concentration calculations ......................................................................................... 16 Table 10: Flow rate calculation ............................................................................................................. 17 Table 11: Required surface area compared to actual surface area ...................................................... 17 Table 12: Desired clean out frequency ................................................................................................. 17 Table 13: Types of equipment used at the site ..................................................................................... 20 Table 14: closest to the quarry: Sensitive receptors ............................................................................ 21 Table 15: Stored volumes of Hydrocarbons .......................................................................................... 22 Table 16: Rehabilitation areas .............................................................................................................. 25

PLATES

Plate 1: Quarry windrows viewed from Bridgenorth Road .................................................................. 28


Integrated Land Management and Planning | Part A - Proponent Details 4

PART A - PROPONENT DETAILS TABLE 1: PROPONENT DETAILS

Name Sunnyside Pastoral Pty Ltd

ABN 25 600 966 434

Address 2355 Bridgenorth Road WESTWOOD Tasmania 7292

Contact Mr Andrew Johnston

Phone (03) 6393 4213

Mobile phone 0438 978 883

email [email protected]

Andrew Johnston owns and operates Sunnyside Pastoral Pty Ltd, a mixed agricultural business undertaking cropping and grazing activities on a pastoral property owned by the Johnston family at Westwood in northern Tasmania. Andrew Johnston as Johnston A C was issued mining lease number 1992 P/M to conduct quarrying activities on the land at Westwood.

Sunnyside Pastoral Pty Ltd (Proponent) engaged contractors to undertake the extractive and processing activities for the quarry operation.

PART B – PROJECT DESCRIPTION

1 DESCRIPTION OF PROJECT In this application the Proponent seeks to have the Westwood Quarry assessed as a Level 2 Activity with a maximum annual production of 50 000 cubic metres. The quarry expansion is in response to a likely increase in demand for construction materials for road projects in the short to medium term. A steady modest rate of production will be supplemented with occasional large contracts.

1.1 EXTRACTION The Westwood Quarry is a rip, crush and screen operation. The dolerite source rock is weathered to the full depth of the potential quarry excavation. Blasting will not be required to liberate source rock for this operation. Extraction will continue as a single 4 to 5 metre high bench with a possible second bench on the north east side in the initial stages. An excavator with a ripper or rock bucket will pull the source rock from the face.

A third bench will be established in the floor of the quarry as development progresses. This bench will have a height of around 5 metres and initial bench will be reduced to a width of 5 to 6 metres around the perimeter of the new quarry floor (see mining plan and sections Figures 4 and 5).

1.2 PROCESSING Course rock will be stored in a stockpile and the stockpiles will be progressively fed into a mobile crusher / screener set with screens to produce the desired product. Different products may require different crushers. A primary can be used to fracture stone for subbase 2 material and for softer


Integrated Land Management and Planning | Description of Project 5

stone for cow lanes. To produce finer aggregates and pavement materials the primary will be teamed with a secondary Vertical Shaft Impactor.

1.3 CARTAGE A series of product stockpiles will be constructed to keep ahead of routine orders. These products will be taken offsite at a reasonably constant rate with seasonal fluctuations.

The Proponent hopes to occasionally win larger scale single infrastructure projects. These projects are likely to take more closely engineered product. In preparation for these projects large stockpiles of compliant product will be constructed and then depleted to supply the project.

TABLE 2: OPERATION DETAILS

Name Westwood Quarry

Location 2355 Bridgenorth Road Westwood Tasmania 7292

Production Producing up to 50 000 cubic metres per annum

Employees 2 while operating + 1 occasionally supervising

Hours of Operation Weekdays 7.00 am to 7.00 pm Saturday 8.00 am to 6.00 pm

.

FIGURE 1: SCHEMATIC OF PROCESSING OPERATION

Processed product in stockpiles Max. 50 000 m3 t per annum to market

Raw rock stockpiles feed into crusher / screener

Source rock ripped from face


Integrated Land Management and Planning | Project Area 6

TABLE 3: EQUIPMENT IN THE PROCESS (ACTUAL EQUIPMENT WILL VARY FROM TIME TO TIME)

Type Make Model Power (kW)

Excavator Caterpillar CAT 325 120

Wheel loader Caterpillar CAT 980G 240

Crusher Portafill 7000IC 150

Screener Powerscreen Chieftain 1400 73

When excavation at the Westwood Quarry is complete the Proponent will rehabilitate the faces with overburden materials and topsoil to resemble native vegetation. The quarry floor area will have soil spread over the surface and sown to pasture.

2 PROJECT AREA

TABLE 4: PROPERTY DETAILS

Address 2355 Bridgenorth Road

WESTWOOD Tasmania 7292

Tenure Privately owned

Property Owner A C Johnston (Proponent)

Property ID 7029519

Certificate of Title 18699 / 1

Municipality Meander Valley Council

Mining Lease 1992P/M

Mining Lease Area 12 hectares

Area of Disturbance 5 hectares

2.1 PROJECT SITE The site of this proposal is an existing quarry operating on the Sunnyside Pastoral Pty Ltd property at Westwood. The site is located approximately 7.0 kilometres NNW of the township of Carrick. Sunnyside Pastoral is a mixed used grazing / cropping property situated within other like agricultural properties all zoned Rural Resource under the Meander Valley Interim Planning Scheme 2013 (MVIPS13). The quarry site is accessed from the Bridgenorth Road by a private driveway over the Proponent’s land.

Hobart

Queenstown

Triabunna

Burnie Smithton

Launceston

100 0


Integrated Land Management and Planning | Project Area 7

TABLE 5: CLIMATE DATA FOR CLOSEST WEATHER STATION

Climate Data – Launceston (Ti Tree Bend 091237) (B.O.M., 2016)

Temperatures averages (Co)

Coolest month Min. 2.3 (Jul.) Annual min. 7.4

Warmest month Max. 24.6 (Feb.) Annual Max. 18.5

Rainfall (mm) mean

Wettest month 87.3 (Aug.) Annual mean

Driest month 30.7 (Feb.)

Wind averages Mornings Strongest winds (20%) are from the northwest between 10 and 30 km/hr.

Afternoons Strongest winds (30%) are from the northwest between 20 and 30 km/hr.

TABLE 6: BIOPHYSICAL DATA

Site Biophysical Data – (D.P.I.P.W.E., 2016)

Geology The site is located on a discrete exposure of a dolerite sill more fully expressed on neighbouring land. The dolerite is most likely overlain with Tertiary sediments to the south and east.

Soils Weakly weathered in situ dolerite usually forms shallow soils or rock pavements. Strongly weathered in situ dolerite usually forms deep clayey soils. Although the dolerite is weathered the soil is a thin texture contrast soil with mottled brown clayey subsoil.

Vegetation The TasVeg data base records the site as (FAG) Agricultural Land. The closest native vegetation (DAZ) Eucalyptus amygdalina inland forest on Cainozoic deposits. The community DAZ is listed under Schedule 3A of the Nature Conservation Act 2002.

Aspect The quarry site is located on a shallow ridge in a low relief landscape. The site is around 175 m on the north east corner falling to 165 on the southwest corner.

Land capability Class 4 – Land well suited to grazing but which is limited to occasional cropping or a very restricted range of crops.

Groundwater Registered waterbores located around the site include:

Feature ID Aquifer geology Depth (m) Initial yield (L/s)

3871 Tertiary sediments 39.6 7.58

15156 Jurassic dolerite 30.5 0.63

40201 Tertiary basalt 54.0 6.31

Watercourses A watercourse runs through the southern portion of the mining lease area. The CFEV project1 identifies the watercourse as 305563 and rates the Integrated Conservation Value ICV as M moderate.

1 The Conservation of Freshwater Ecosystem Values (CFEV) Project provides conservation assessments for all rivers, lakes and waterbodies, wetlands, estuaries, saltmarshes and karst within Tasmania.


Integrated Land Management and Planning | Map and site plan 8

3 MAP AND SITE PLAN

Proponent’s residence

Closest residence in other ownership

Gas pipeline easement


FIGURE 2: LOCALITY PLAN

Rural Resource Zone (MVIPS13)





FIGURE 3: AERIAL IMAGE


Sunnyside Pastoral Pty Ltd Cert. Title: 18699 / 1

C.T. 52263/3

C.T. 52262/1

C.T. 116521/1

Listed native woodland community (NCA 2002)

north



Quaternary sediments (stream alluvium)

Tertiary sediments (Poorly consolidated clay, silt and clayey labile sand with rare gravel and lignite; some iron oxide-cemented layers and concretions)

FIGURE 4: MINING PLAN (GOOGLE EARTH IMAGE)

Jurassic igneous rocks (dolerite and related rocks)

Stage two 165 level – 3.1 ha

Stage one 165 level – 2.5 ha

Off lease rehabilitation

Direction of mining

Primary sediment retention

Culvert under access Secondary sediment retention

Discharge

Stage two direction of m

ining

A A

Temporary container relocated as required



160

165

170

155

175

0 20 40 60 80 100 120 140 160 200 180 220 240 260 280

160

165

170

155

Final Level 160 – 5.0 ha

Existing stockpiles

Cross Section A-A Stage one and Stage two development

Cross Section A-A Final Rehabilitation

175

0 20 40 60 80 100 120 140 160 200 180 220 240 260 280

Stage two 165 level – 3.1 ha Stage one 165 level – 2.5 ha

FIGURE 5: CROSS SECTIONS THROUGH DEVELOPMENT STAGES (EXAGGERATED SCALE)

Min

ing

leas

e bo

unda

ry

Min

ing

leas

e bo

unda

ry


Integrated Land Management and Planning | Rationale and alternatives 12

3.1 SITE WORKS The Westwood Quarry operation will proceed in a similar manner to the existing operation. The resource is concealed under a very thin topsoil layer and a clayey overburden over most of the mining lease area. The inferred resource is overlain by tertiary sediments of unknown thickness in the southern quarter and a portion of the eastern side of the lease area.

The quarry operator will strip and arrange windrows of the topsoil around the boundaries of the lease. The overburden will be excavated and placed into separate windrows limiting the height to around 2 metres.

The exposed source rock will be ripped with an excavator and pulled into stockpiles. A wheel loader will use the source rock stockpiles to feed a mobile crusher screener unit. The configuration of the crusher screener will vary depending on the type of final product required. The wheel loader will build product stockpiles ready to supply to contacts offsite.

On-road truck will be loaded with the wheel loader to gradually deplete the product stockpiles and cart the materials to service the market. A tally of the production will be kept by recording truck counts.

4 RATIONALE AND ALTERNATIVES Westwood Quarry currently operates to supply gravels to a modest local market for farm access roads and cow lanes. The highly weathered dolerite on the surface of the pit lends its self to gravel road pavement and shoulders, applications where a clay content and softer rock is beneficial. The maximum rate of production of 4 500 m3 per annum allowed under the permit is suitable for this market.

A series of tests pits revealed less weathered dolerite over a large portion of the quarry footprint. The testing proved the product could be won by ripping to the full depth of the test pits (around 6 metres). Less weathered (blue) dolerite is the basis of durable sealed road pavements used to construct state roads and highways. Although common in southern Tasmania, blue dolerite quarries are less common in the north.

The Westwood Quarry had a product suitable to supply larger road projects let by local government authorities and the State Government. These contracts would most likely be of a larger scale with larger product volumes required. The maximum rate of production for Westwood Quarry is not sufficient to service these contracts.

Westwood Quarry is well situated, remote from residential neighbours, with direct access to Bridgenorth Road which offers alternative routes west and east to the Bass Highway and via Ecclestone Road to Riverside and the West Tamar.

The Proponent decided to have the Westwood Quarry operation assessed as a Level 2 Activity with a maximum annual production of 50 000 m3. The maximum production rate would allow the quarry to win at least one major contract each year and still service the current rural market of soft gravels.

Westwood Quarry is located on the Proponent’s property targeting a mainly surface exposed igneous resource. No alternative sites were investigated for this operation.


Integrated Land Management and Planning | Part C Potential environmental effects 13

PART C POTENTIAL ENVIRONMENTAL EFFECTS

1 FLORA AND FAUNA

1.1 FLORA VALUES The Westwood Quarry is located on a pastoral property (Sunnyside Pastoral). The land disturbed by the quarry operation is agricultural land exposed to rotations of crops and pastures for many years. There is no remaining natural vegetation or habitat within the boundaries of the mining lease.

Weeds tend to preferentially colonise disturbed ground and there are examples of various weeds appearing on the overburden and topsoil stockpiles. To ensure weed fragments or seed does not infiltrate the gravel products a weed control program will be implemented.

Item Commitment Responsible When

1. A weed control program will be implemented on site to reduce the abundance and prevent the spread of weeds.

Proponent Biennially

On a neighbouring property a remnant of native vegetation remains. This community is mapped as DAZ Eucalyptus amygdalina inland forest and woodland on Cainozoic deposits and is listed as threatened under the Nature Conservation Act 2002, (see area identified as 15 in Figure 1). Further afield, this community and other similar remnant native vegetation copses harbor examples of flora species listed as rare or vulnerable under the Threatened Species Protection Act 1995.

Below is an extract from the Natural Values Data Base providing a list of observed species recorded within 5 kilometres of the Westwood Quarry. These records come from observations in remnant native vegetation quite dissimilar to the pastoral grasses observed on the mining lease and on surrounding land.

TABLE 7: RECORDS OF LISTED FLORA SPECIES WITHIN 5 KILOMETRES

Species Common name State listing National listing Observation Date

Amphibromus neesii southern swampgrass rare sighting 2002

Aphelia pumilio dwarf fanwort rare sighting 2001

Arthropodium

strictum

chocolate lily rare sighting 2004

Asperula subsimplex water woodruff rare sighting 2006

Brunonia australis blue pincushion rare sighting 200

Callitris oblonga subsp.

oblonga

south esk pine vulnerable Endangered sighting 1995


Integrated Land Management and Planning | Rivers creeks wetlands and estuaries 14

Carex longebrachiata drooping sedge rare sighting 2006

Hypoxis vaginata var.

vaginata

sheathing yellowstar p. rare sighting 2009

Juncus amabilis gentle rush rare sighting 1984

Pimelea curviflora curved rice-flower p sighting 1996

(D.P.I.P.W.E. (b), 2015)

1.2 FAUNA VALUES There are distant records of observations of threatened fauna species. Below is an extract from the Natural Values Data Base providing a list observed species recorded within 5 kilometres of the Westwood Quarry and the distance between the record site and the mining lease boundary.

TABLE 8: RECORDS OF LISTED FAUNA SPECIES WITHIN 5 KILOMETRES

Species Common name State listing National listing Observation Date Distance

Aquila audax subsp. fleayi

wedge-tailed eagle

endangered endangered nest 1985 3.2 km

Dasyurus maculatus

spotted-tailed quoll

rare vulnerable sighting 1997 3.5 km

Haliaeetus leucogaster

white-bellied sea-eagle

vulnerable nest 2015 4.8 km

Litoria raniformis

green and gold frog

vulnerable vulnerable sighting 2003 3.5 km

Sarcophilus harrisii

tasmanian devil endangered endangered sighting 2014 3.4 km

(D.P.I.P.W.E. (b), 2015)

The Westwood Quarry site is located on a mining lease covering cultivated land entirely covered with exotic pastures. All records of communities and species listed for protection are recorded on properties remote from the site. It is highly unlikely any natural flora or fauna will be affected by this proposal.

2 RIVERS CREEKS WETLANDS AND ESTUARIES The access road to Westwood Quarry crosses a minor drainage path running through the paddocks to the south of the quarry proper. This drainage path is identified as 305563 and is assigned an ICV of Moderate of by the CFEV database. The value of moderate is assigned because the drainage path



has a naturalness category of Low as a result of a biological condition score of 0.36 ‘severely impaired biological condition for the river section’.

Centre point - E: 498432m N: 5408760m Scale (map width): 6612m

GDA94 Zone 55

FIGURE 6: CFEV REPORT MAP WITH ICV OF STREAMS (CFEV database v1.0, 2005)

The quarry operation may pose a threat to the condition of this drainage path as a result of uncontrolled runoff discharge transporting sediment or a hydrocarbon spill carried into the water course by runoff.



2.1 EROSION AND SEDIMENT CONTROL The quarry is targeting a weathered dolerite source rock, which has a highly fractured nature. Rainfall tends to infiltrate into the rock rather than pond on the surface and contribute to overland flow. Over time the rock in the floor of the quarry will become sealed with fines from crushing activities and from passes of earthmoving equipment.

The Proponent will establish a primary sediment basin located to intercept any runoff occurring from the works areas. The sediment trap will detain the runoff for a period to allow the silt to settle out. Following detention the overflow from the sediment basin will flow to the existing farm dam, located on the mining lease and hence providing secondary detention capacity. The discharge from the farm dam will go to the drainage path and potentially off lease and this is the discharge point for the quarry.

A rule of thumb for sediment basins is the surface area should be around 0.3 % of the exposed catchment area. The maximum disturbed area for the ultimate development will be limited to 5 hectares. The sediment retention basin should therefore be approximately 150 square metres in area. A basin with an average length of 20 metres and a width of 7.5 metres will be adequate.

2.1.1 STORMWATER RUNOFF CALCULATIONS The catchment for the Westwood Quarry sediment retention basin is an unpaved gravel surface including the faces, benches and floor of the ultimate quarry footprint. It is unlikely that the entire area will be exposed at one time as early progressive rehabilitation and revegetation works will reduce the area running off. However the total ultimate footprint will have a maximum area of 5.0 hectares.

Calculations to determine the dimensions of a sediment retention basin required to manage the runoff from a 1 in 10 year reoccurrence event are as follows:

Tc = 91L/(A0.1 * Se0.2)

TABLE 9: TIME OF CONCENTRATION CALCULATIONS

Flow line L (km) Area A (ha) Equal area Slope Se (m/km)

Tc Time of concentration (min)

0.270 5.0 18 12 min

Q = C . i . A 360



TABLE 10: FLOW RATE CALCULATION

Coefficient of runoff C (no units)

Intensity of rain event I (mm/hr)

Catchment Area A (ha) Flow rate Q (m3/s)

0.35 60 5.0 0.27

Assume sediment basin 20.0m x 7.5m x 1.0 m deep

TABLE 11: REQUIRED SURFACE AREA COMPARED TO ACTUAL SURFACE AREA

Flow rate Q (m3/s) Retention basin area from WSUD Figure 4.2 (m2) for 90% capture

Actual basin surface area (m2)

0.29 100 150

(Derwent Estuary Program, 2012)

Total storage capacity (150 + 60)/2 = 105 m3

Assume storage 50% of total capacity = 52m3

Adapted from (Derwent Estuary Program, 2012)

Fr = St / (A x R x Lo)

TABLE 12: DESIRED CLEAN OUT FREQUENCY

Capture efficiency (R)

Contributing catchment A (ha)

Storage Volume St (m3)

Sediment loading rate Lo (m

3/ha/yr) Desired clean out frequency Fr (yrs)

0.90 5.0 52 10 1

The clean out frequency is 1.1 years which gives an adequate factor of safety for an annual clear out. The sediment from the sediment retention basin should be lost within production materials.


2. The sediment retention basin will be maintained to ensure that the storage capacity is not reduced by more than half its capacity

Proponent At least annually


Integrated Land Management and Planning | Significant areas 18

2.2 HYDROCARBONS Hydrocarbons include engine oil, hydraulic oil, grease and diesel fuel. Hydrocarbons are lighter than water and only a small amount will quickly spread over the surface of a water body contaminating banks where the water surface meets the ground surface. Hydrocarbons on the surface of the water will prevent an exchange of oxygen from the air to the water through the surface causing the water to become oxygen deficient.

The drainage path is at risk from hydrocarbons in the event of a significant spill to ground where the residue is transported over ground by an overland flow of water. The primary sediment retention basin will be the first point where spilt hydrocarbons will collect.

A hydrocarbon spill will trigger the following actions:

• The source of the leak / spill will be secured. • The spill will be contained and a spill kit used to clean up. • If wet conditions prevail or the spill has been transported to the sediment basin a

hydrocarbon absorbent mats will be applied to the surface. • If the spill is substantial all the soil contaminated by the spill will be collected and disposed

of to an appropriate location.


3. A Hydrocarbon Spill Kit will be available for immediate deployment in the event of a minor spill.

Proponent At all times

4. If a major spill occurs, oil contaminated soil will be collected and disposed of to an appropriate disposal site.

Proponent As required

3 SIGNIFICANT AREAS There are no parcels of reserved land in close proximity to the Westwood Quarry. The quarry is unlikely to cause an adverse impact on any significant area further afield.

4 AIR EMISSIONS Weathered dolerite rock is associated with iron rich clays normally red orange in colour. The fine particles in clays when dry can give rise to dust emissions. Crushing hard rock and mechanical screening can also produce dust emissions.

The Westwood Quarry is remote from any residences that may be adversely affected by dust emissions. The surrounding pastures will be regularly ploughed and hence will not be affected by dust.


Integrated Land Management and Planning | Liquid effluent 19

The Westwood Quarry can be observed from Bridgenorth Road. A visible dust plume emanating from the quarry would be unsightly and could possibly lead to complaints to the Council.

Under normal circumstances the quarry operator will;

• keep drop distances short in loading hoppers and trucks; • travel speeds on unpaved surfaces will be limited to 20 km/hr within the quarry and 40

km/hr on the access road; and • trucks will be loaded with the load surface either level with the sides of the tray or the

surface will be dampened or a cover applied.

In dry and windy days dust emissions will be monitored and if a visible dust plume is crossing the mining lease boudary one or more of the following actions may be implemented:

• Use a water cart to dampen the quarry access road and trafficable surface within the quarry. • Use a water spray to dampen the surface of topsoil, overburden and product stockpiles. • Apply a mist spray to the either the input or output conveyor on the crusher / screener.


5. Dust conditions will be monitored and mitigation measures applied to suppress dust when necessary


5 LIQUID EFFLUENT Liquid emissions are possible from 2 sources:

• Human waste will be collected in the holding tank of a relocatable toilet and periodically emptied at a dump point.

• Water emanating from the dust suppression actions either from the water cart or from sprays on stockpiles or on the crusher / screener will be intercepted by the site drainage system and will report to the sediment retention basin.

It is highly unlikely any liquid effluent will be discharged into the receiving environment.

6 SOLID WASTE All waste will be managed in accordance with the hierarchy of waste management displayed below:

• avoidance • recycling/reclamation • re-use • treatment • disposal

Waste products generated by the quarry will be managed as per below:


Integrated Land Management and Planning | Noise emissions 20

• Excavated materials unsuitable to process into marketable products, will be stored in windrows and used for progressive rehabilitation works.

• Used machinery parts and new parts packaging as a result of breakdowns, will be recycled or passed into the appropriate waste stream.

• General litter from packaging lunches, will be taken out in the workers cars and disposed off-site at the end of each day.

7 NOISE EMISSIONS The Westwood Quarry will not use drill and blast techniques to liberate the source rock. All the product will be won by direct ripping and digging with an excavator. Test pits have been used to explore the extent of the inferred resource without finding refusal at maximum depth.

The use of mechanical mobile equipment and particularly crushers and screeners give rise to noise emissions. Noise generated on quarry sites is attenuated through solid objects screening the noise and distance. The Quarry Code of Practice (DPIWE, 1999) stipulates a minimum attenuation distance for a residence or other sensitive use from a quarry where mechanical crushing and screening takes place is 500 metres.

TABLE 13: TYPES OF EQUIPMENT USED AT THE SITE

Type Make Model Power (kW)

Excavator Caterpillar CAT 325 140



Mechanical screen Powerscreen Chieftain 1400 83

Crusher Portafill 7000IC 120

The Westwood Quarry is located within a productive farming area where during the day there will be activities on most farms generating noise including using tractors, trucks, quad bikes, chainsaws and a variety of other noisy equipment.

Residences in other ownership closest to the Westwood Quarry mining lease boundary are listed. It should be recognised the southern portion of the mining lease boundary has been found to be unsuitable and will not be developed for extraction.


Integrated Land Management and Planning | Transport impacts 21

TABLE 14: CLOSEST TO THE QUARRY: SENSITIVE RECEPTORS

Type Address Direction Distance (km)

Residence 2418 Bridgenorth Road SSW 1.61

Residence 822 Westwood Road WNW 2.04

Residence 448 Westwood Road ESE 1.91

Residence 650 Westwood Road SSE 1.86

Residence 600 Westwood Road SSE 1.99

The separation distance between the Westwood Quarry operation and the closest residences combined with the normal ambient noise landscape of a productive rural community makes it highly unlikely noise emissions from the quarry will be a nuisance for neighbours.

8 TRANSPORT IMPACTS The Proponent engaged RJK Consulting Engineers to undertake a Traffic Impact Assessment (TIA) to determine the likely effect of the increase in the maximum rate of production from the Westwood Quarry. The TIA is included as Appendix 1 to this document.

Assessment by the Traffic Engineer found site constraints associated with the Westwood Quarry operation limited the number of vehicles that could be loaded to leave the site on a particular day. The TIA found the proposed upgraded operation is likely to increase the number of days of operation rather than increase the traffic on any one day.

The conclusions of the TIA prepared for this proposed upgrade to Westwood Quarry are as follows:

• The surrounding road network is capable of absorbing the traffic generated by the proposal. • The sight distance exceeds the requirements of the Meander Valley Interim Planning

Scheme. • The crash history of the surrounding road network does not indicate any specific road safety

issues are likely to be exacerbated by the traffic generated by the proposal.

9 OTHER OFF-SITE IMPACTS The Westwood Quarry access road crosses over the Palisade TGP Pty Ltd Tasmanian Gas Pipeline (TGP) (See Figure 3 Aerial image). Field services for the TGP are managed by Zinfra Group. It is essential to ensure heavy traffic crossing the TGP does not interfere with the pipeline’s integrity or operation. Advice was sought on from Zinfra Group regarding the status of the pipeline crossing at the entrance to the Westwood Quarry. Zinfra Group stated the original pipeline installation included extra cover to protect the pipe due to the likely occurrence of heavy vehicles using the access and no extra protection is required to accommodate this proposal.


Integrated Land Management and Planning | Hazardous substances and chemicals 22

The Westwood Quarry operation is similar in nature to the normal agricultural pursuits common in the region, it is unlikely there will be other off-site impacts.

10 HAZARDOUS SUBSTANCES AND CHEMICALS The mobile equipment used for the Westwood Quarry operation is energised by diesel engines. To fully maintain this equipment it will be necessary to have stored onsite an amount of engine and hydraulic oil. These products are considered hazardous substances due to the potential harmful effects if released to the environment.

The potential harm will be mitigated by limiting the volume of product on site at any one time:

TABLE 15: STORED VOLUMES OF HYDROCARBONS

Product Purpose Container Volume (litres)

Engine oil Top up engine sumps between services Steel drum 205

Hydraulic oil Top up hydraulic tanks between services Steel drum 205

Grease Applied to hydraulic cylinders and bearings Case of 10 4

The oil storage drums will be stored on a proprietary fully bunded drum storage pallet.

The Westwood Quarry will not have a permanent diesel fuel storage tank. The equipment will be refuelled using a utility mounted fuel tank with a maximum capacity of 600 litres. The refuelling ute will be brought onto the site each day.


6. A maximum of two 205 litre oil drums will be stored on a proprietary bunded drum pallet.

Proponent At any time.

The spill containment measures described in Section 2 will ensure no adverse environmental impacts occur as a result of accidental hydrocarbon leaks or spills.

11 SITE CONTAMINATION The Westwood Quarry is situated on land owned and farmed by the Proponent and previously by the Proponent’s family. There is no history to suggest there has been any level of site contamination as a result of previous land management practices.


Integrated Land Management and Planning | Sustainability and climate change 23

12 SUSTAINABILITY AND CLIMATE CHANGE The upgrade of Westwood Quarry will enable local road projects to be serviced with high quality pavement grade products without importing the products from further afield. There will be a net reduction in GHG emissions associated with truck movements if projects are serviced locally.

The Proponent will use recent model mobile and semi-mobile equipment, which has lower exhaust emissions than older equipment. Efficient mobile equipment operating techniques will be employed to minimise fuel consumption including:

• Equipment will not be left idling for long periods. • Engine revs will be reduced when not required for the load. • Spotting will minimise travel distances for loading and unloading tasks. • Equipment will be serviced and tuned regularly.

It it unlikely the site will be vulnerable to the effects of climate change. The only threat will be from higher intensity storms and grass fires. The measures introduced to manage runoff will cater for storm events and operator will simply evacuate in the event of a grass fire.

13 CULTURAL HERITAGE The Proponent requested Aboriginal Heritage Tasmania (AHT) to conduct a Desktop Assessment of the proposal to upgrade the Westwood Quarry. Advice received from AHT on 9 February 2016 stated there is no requirement to conduct an Aboriginal heritage investigation and AHT have no objection to the proposal proceeding.

An Unanticipated Discovery Plan will be invoked if an item or site which may have Aboriginal heritage significance is discovered during ground breaking works. A copy of the Unanticipated Discovery Plan is included as Appendix 2.

14 SITES OF HIGH PUBLIC INTEREST There are no sites of high public interest potentially affected by the proposal to upgrade the Westwood Quarry located on Bridgenorth Road Westwood.


Integrated Land Management and Planning | Rehabilitation 24

15 REHABILITATION The Westwood Quarry site is limited to a maximum area of un-rehabilitated land of 5 hectares. The area currently disturbed by source rock extraction activities is 3.1 hectares.

15.1 IMMEDIATE REHABILITATION The toe of the overburden windrow has inadvertently breached the western mining lease boundary. The overburden windrow batter slopes will have pasture grass seed broadcast over the surface. The grass will rapidly stabilise the slope, causing the windrow surface to blend visually with the adjacent paddocks and crowd out weed species.

15.2 PROGRESSIVE REHABILITATION Westwood Quarry will be developed on the existing footprint for some years. Assuming a continuous bench height of 5 metres is achieved the solid volume is 125 000 m3, supplying a production volume of around 200 000 m3 or 4 years continuous maximum production.

Once the first bench is fully developed the Proponent will either;

• commence rehabilitating the far western end of this bench and strip and develop the eastern portion of the lease, or

• proceed to develop a lower bench in the floor of the existing bench.

If the decision is made to open up the stage 2 development area, this will add 3.0 hectares to the total area of un-rehabilitated land. To comply with the mining lease schedules an area of 1.1 hectares will be rehabilitated. The topsoil and overburden from the stage two area will be placed in low windrows on the land to the far east of the mining lease. Geological mapping suggests overburden will increase in thickness in this direction.

An area of rehabilitation of 1.1 hectares will be achieved by rehabilitating the first bench face and a 6 metre wide bench on the lower level using materials from the overburden and topsoil windrows and rehabilitating the exposed ground. A mixture of native shrubs and trees common to the region will be used and will develop to screen the remaining portion of the stage one area and the stage two production areas.

15.3 DECOMMISSIONING AND REHABILITATION The inferred resource is estimated to be around 1 000 000 m3 for two 5 metre benches over the entire stage one and stage two development areas. This gives a quarry life of around 20 years at maximum production.

Once the source rock is exhausted the quarry site will be completely rehabilitated. The final use will be grazing land surrounded by faces and benches with native communities similar to the surrounding remnant native vegetation.


Integrated Land Management and Planning | Part D Management Commitments 25

TABLE 16: REHABILITATION AREAS

Rehabilitation area Description Area (ha) Vegetation cover

Stage 1 Face and bench on western side of Stage one.

1.1 Native community

Stage 2 Faces and bench on eastern side of Stage two

1.4 Native community

Stage 3 Floor of worked out quarry 4.3 Grazing pasture

PART D MANAGEMENT COMMITMENTS


1. A weed control program will be implemented on site to reduce the abundance and prevent the spread of weeds.

Proponent Biennially

2. The sediment retention basin will be maintained to ensure that the storage capacity is not reduced by more than half its capacity

Proponent At least annually

3. A Hydrocarbon Spill Kit will be available for immediate deployment in the event of a minor spill.

Proponent At all times

4. If a major spill occurs, oil contaminated soil will be collected and disposed of to an appropriate disposal site.


5. Dust conditions will be monitored and mitigation measures applied to suppress dust when necessary.


6. A maximum of two 205 litre oil drums will be stored on a proprietary bunded drum pallet.

Proponent At all times.


Integrated Land Management and Planning | Part E Public Consultation 26

PART E PUBLIC CONSULTATION In preparing this application the Proponent has sought advice and consulted with the following agencies:

• Environment Protection Authority (Assessments Section). • Meander Valley Council (Planning Section), (Engineering Section). • Mineral Resources Tasmania • Zinfra Group (Tasmania Gas Pipeline) • Neighbours and Landowners adjacent to the site.

Other business owners and interested parties will be contacted through the course of the assessment process.

The proposal to intensify the existing Westwood Quarry increasing production to a maximum annual rate of 50 000 cubic metres causes the activity to be assessed as a Level 2 Activity under the Environmental Management and Pollution Control Act 1994.(EMPCA). EMPCA states the environmental impacts of a Level 2 Activity must be assessed by the Board of the Environment Protection Authority and the application must be dealt with under Section 57 of the Land Use Planning and Approvals Act 1993 (LUPAA). Section 57 of LUPAA requires the application to be presented for public consultation.

16 REFERENCES B.O.M. (2016, March 31). Climate statistics for Australian locations. Retrieved April 3, 2016, from

Bureau of Meteorology - Climate Data Online: http://www.bom.gov.au/climate/averages/tables/cw_091237.shtml

CFEV database v1.0. (2005). Conservation of Freshwater Ecosystem Values Project, Water Resources Division,. Tasmania: Department of Primary Industries and Water.

D.P.I.P.W.E. (b). (2015, November 23). Natural Values Atlas Report. Retrieved November 23, 2015, from Department of Primary Industries Parks Water and Environmnet: https://www.naturalvaluesatlas.tas.gov.au/

D.P.I.P.W.E. (2016, February). LIST Map. Retrieved April 3, 2016, from Land Information System of Tasmania: http://maps.thelist.tas.gov.au/listmap/app/list/map

Derwent Estuary Program. (2012, October 20). Derwent Estuary Program> Water Sensitive Urban Design: Engineering Procedures for Stormwater Management in Sthn Tas. 2005. Retrieved October 20, 2012, from Derwent Estuary Program: http://www.derwentestuary.org.au/folder.php?id=242

DPIWE. (1999). Quarry Code of Practice. Hobart: Department of Primary Industries, Water and Environment.


Integrated Land Management and Planning | Meander Valley Interim Planning Scheme 2013

27

17 MEANDER VALLEY INTERIM PLANNING SCHEME 2013

26 Rural Resource Zone

26.1.1 Zone Purpose Statements

26.1.1.1 To provide for the sustainable use or development of resources for agriculture aquaculture, forestry, mining and other primary industries including opportunities for resource processing.

Westwood Quarry is an extractive (mining) operation consistent with the primary zone purpose statement.

26.2 Use Table

Extractive industries area permitted except on prime agricultural land or for a Level 2 Activity

Quarry is ‘discretionary’ as a result of being a Level 2 Activity.

26.3 Use Standards

26.3.1 Uses if not for a single dwelling

P1.1 Consistent with local area objectives Quarry is a primary industry use.

P2.1 Uses on prime agricultural land Quarry is not located on prime agricultural land.

P2.2 Uses other than utilities, extractive industries…

Quarry is an extractive industry

P3 a) demonstrate the area of non-prime agricultural land converted is minimised.

The quarry conversion will be temporary the majority of the land will be rehabilitated to non-prime agricultural land.

P3 b) site is incapable of supporting an agricultural use

The land has previously supported limited cropping and grazing.

Limitations of the land include;

• thin topsoil with poor moisture holding characteristics,

• shallow weathered rock substrate creating stony conditions for ploughing,

• exposed aspect causing early and complete drying.

P3 c) site is reasonably required for operational efficiency.

The location of the quarry site is dictated by geology.

P4 a) demonstrate emissions will not cause environmental nuisance

The Environment Protection Authority will evaluate the predicted environmental emissions.

P4 b) other primary industry uses not constrained

Agricultural operations rely on quarries to supply essential gravel products to farms. Quarry and


Integrated Land Management and Planning | Meander Valley Interim Planning Scheme 2013

28

farming operations have similar emissions.

P4 c) local road network can sustain the use A Traffic Impact Assessment demonstrates the road network canl sustain the quarry operation.

P5 a) appearance does not impact on skylines Windrows arranged to replicate the ridgeline landform as viewed from Bridgenorth Road (see plate below).

b) visibility from public roads Windrows conceal quarry operation from Bridgenorth Road.

c) visual impact of materials and equipment Windrows conceal quarry operation from Bridgenorth Road.

d) visual impact of vegetation clearance Windrows will be revegetated with pasture grass to resemble paddocks in foreground.

e) desired future character statements Quarry is temporary and the land will return to agricultural use at closure.

PLATE 1: QUARRY WINDROWS VIEWED FROM BRIDGENORTH ROAD

The quarry operation at times has an ex-shipping container located on the site to accommodate parts and potentially allow workers to get out of their machines on wet days. Sanitation is provided by a relocatable toilet. No permanent structures or buildings will be erected.

The container will be moved regularly to respond to changes in the arrangement of the mobile equipment, extraction benches and faces.


Integrated Land Management and Planning | Appendices 29

18 APPENDICES


Integrated Land Management and Planning | Appendices

18.1 APPENDIX 1 – TRAFFIC IMPACT ASSESSMENT – RJK CONSULTING ENGINEERS

REVISED TRAFFIC IMPACT ASSESSMENT

Westwood Quarry Bridgenorth Road, Westwood

Prepared on behalf of Sunnyside Pastoral Pty Ltd Prepared By: Risden Knightley BE (Civil), Ass Dip Civil Eng, MIEAust, CC 2539X PO Box 128, Prospect 7250 Mobile: 0400 642469 Fax: 6343 1668 Email: [email protected]

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RJK CONSULTING ENGINEERS 2

TABLE OF CONTENTS Introduction Pg 3 Location Pg 5 Classification Pg 7 Response to Meander Valley Council Planning Scheme Pg 8 Conclusion Pg 11

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INTRODUCTION A proposal is being sought to extend the current mining lease at 2355 Bridgenorth Road from its current level 1 activity of extraction limited to 4,500m3 to a level 2 activity with a maximum annual limit of 50,000m3 of processed product.

In accordance with section E4 Road and Railway Assets Code of the Meander Valley Interim Planning Scheme, a traffic report is required as part of the documentation for the proposal. RJK Consulting Engineers have been engaged to undertake a traffic impact assessment, to determine the impact of the increased operation may have on the surrounding area.

A site inspection was carried out on 24th March, 2016. Following discussions with Council’s Director Infrastructure Services, Mr Dino De Paoli, a revised report is presented. This revised report assumes that traffic volumes are for the total production rate of 50,000m3 and does not consider past production. The estimated cartage is also based on optomised production output using the current plant on site.

Objectives

The key objectives of the report are:

� Review of the existing road environment in the vicinity of the site and the traffic conditions on the road network.

� Provision of information on the proposed development with regards to traffic movements and activity.

� Identification of the traffic generation potential of the proposal with respect to the surrounding road network in terms of road network capacity.

� Traffic implications of the proposal with respect to the external road network in terms of traffic efficiency, road safety and Planning Scheme requirements.

Project Scope

This report (including all associated mapping and information) relates only to the area identified in the following map.

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Figure 1 - Listmap reference of location

Figure 2 - Aerial photograph of location

The outcomes have been developed based on the resources available. The report provides recommendations relating to site-specific investigations and detailed design.

15/16 TAS 199


LOCATION The current quarry operation is located within the pastoral property owned and operated by Sunnyside Pastoral Pty Ltd. The quarry is accessed by an internal road system with all general access from the site utilising the existing farm access point on Bridgenorth Road. This access point is situated approximately 1.3 kilometres along Bridgenorth Road from the intersection with Westwood Road. The access point occurs on the outer 90-degree bend of a corner and provides sight distance of 600 metres to the west and 189 metres to the south. The road speed limit is 100km/hr however the corner is speed reduced sign posted to 35 km/hr due to the corner geometry.

The road leading up to the subject site is approximately 5.5 metres wide, sealed and has large open drains each side. In addition to this the site is located at the change in grade from a downward profile to a flat section of road. The road passed the access point is maintained by Meander Valley Council.

The land could be described as rolling countryside. At present, the land is in use as pasture/ agriculture and a working dairy.

Road frontage could be termed typical rural with unsealed shoulders, open swail drains and a sealed pavement width that varies between 5 metres to 5.5 metres. Limited signage is afforded to motorists on the stretch of road. No lighting was present due to the rural nature.

Figure 3 – Site Distance to the South

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Figure 4 – Site Distance to the West

Figure 5 – Access Point

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Figure 6 – Cautionary Sign indicating 35km/hr Corner

The designated state speed limit for this location is 100 km/hr, however the 85% speed has been assessed as being between 75 to 30 km/hr north bound heading into the corner from Westwood Road due to the corner configuration and 75 to 50 km/hr southbound heading into the corner and further onto Westwood Road. The variance in the road speed limits is due to the nature of the road geometry heading into and out of the corner where the access point is located.

Access to the site is via a gravel surface some 5.5 metres widening to 7.5 metres. At the intersection with Bridgenorth Road the throat access width is some 20 to 25 metres (dependent on the width of the through traffic lanes and the curve radius taken). No gate access is provided. Travel paths from the quarry are approximately 50/50 north and south.

CLASSIFICATION

Bridgenorth Road is classified as a local road. Traffic counts in this vicinity indicate AADT volumes of an average of approximately 230 vehicles per day, taking into account seasonal variance. (MVC Traffic Counts 2009) Existing road safety deficiencies can be highlighted through the examination of existing crash history. Accident records indicate there have been no reported crashes in the past 5 years within the vicinity of the access point on Bridgenorth

15/16 TAS 199


Road. This suggests that the speed environment for this road is acceptable and that no safety issues are present to motorists. Traffic Generation The proposal is to extend the quarry production life and volume to meet supplier demand. Indications are immediate demand is some 10,000m3 with this growing to 50,000m3. Cartage will be by existing rigid trucks and rigid trucks with trailers. Existing access to the dairy will remain as current with no increase in traffic and therefore has not been considered in this assessment. Following discussions with the quarry owner, no additional extraction/screening machinery is intended to be used other than what currently is in practise. Based on this information, the current machinery will be ramped up to maximise its likely production output. This production output will be in the order of 5,300m3

per month. This equates to 8,480 tonnes per month. Utilising a 5 day cartage cycle (Monday to Friday) this equals 424 tonnes per day. Truck cartage will be in load capacities of 28 tonnes which equates to 16 loads per day. Together with an allowance for a quarry workforce of 2 people (4 traffic movements each employee), this suggests a peak AADT of some 40 vehicles per day.

RESPONSE TO MEANDER VALLEY COUNCIL INTERIM PLANNING SCHEME E 4 Road & Railway Assets Code Assessment in accordance with

code indicates. E 4.6.1 Use and road or rail infrastructure

To ensure that the safety and efficiency of road and rail infrastructure is not reduced by the creation of new accesses and junctions or increased use of existing accesses and junctions.

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Response:

The 10% value of the current traffic is 25, based on the 2009 traffic counts with a 1% per annum growth factor to equate this to 2016 figures. The current estimated daily flow predicted from the quarry is some 40 vehicles per day which exceeds the 10% by 15 vehicles per day. Based on an 8 hour operation this is an additional 2 vehicles per hour.

Upon assessment as no crash history is noted, SISD is

acceptable, the increase is not considered detrimental and that there will be no loss of level of service. As such the operations rely upon P3 (c).

E 4.7.1 Development on and adjacent to Existing and Future Arterial

Roads and Railways

To ensure that development on or adjacent to class 1 or 2 roads (outside 60km/h), railways and future roads and railways is managed to: a) ensure the safe and efficient operation of roads and railways; and b) allow for future road and rail widening, realignment and upgrading; and c) avoid undesirable interaction between roads and railways and other use or development

Response: As the accesses are greater than 50 metres from a Category 1

and Category 2 road the proposal meets the acceptable solution A1.

E 4.7.2 Management of Road Access and Junctions

To ensure that the safety and efficiency of roads is not reduced by the creation of new accesses and junctions or increased use of existing accesses and junctions

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Response: As outlined in the plan, the proposal is to utilise the existing access driveway and therefore the Acceptable Solution A1 of E4.7.2 is met.

E4.7.3 Management of Rail Level Crossings Not Applicable E4.7.4 Sight Distance at Accesses, Junctions and Level Crossings

To ensure that use and development involving or adjacent to accesses, junctions and level crossings allows sufficient sight distance between vehicles and between vehicles and trains to enable safe movement of traffic

Response: The Planning Scheme SISD values are based on the measured 85th percentile speed values for the frontage road. Based on the visual estimated 85th percentile speeds at the site (75km/hr), the planning scheme requires SISD values of 148 metres. Available SISD exceeds this minimum value in both directions and therefore the Acceptable Solution of E4.7.4 of the Planning Scheme is met. It is noted that the 85% is subjective for this site however due to the cautionary signage indicating a 35km/hr corner and the observation of traffic, this percentile is fairly representative of the site.

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CONCLUSION Assessment of the proposed development indicates: No significant road safety impacts are foreseen for the proposed development. The traffic impact assessment indicates that the daily vehicles will be an increase of 16% rather than the acceptable 10%. This is an additional 15 cars per day above the allowable 10% of 25 cars. As such we conclude the following:

• The surrounding road transport network is capable of absorbing the relatively small estimated traffic generation of the proposed development.

• Sight distance at the access exceeds Planning Scheme requirements and therefore provides a safe access environment. This is based on the 85% being 75km/hr.

• The crash history of the surrounding road network near the subject site does not indicate that there are any specific road safety issues that are likely to be exacerbated by traffic generated by the proposed development.

Revised May 2016


Integrated Land Management and Planning | Appendices

18.2 APPENDIX 2 – UNANTICIPATED DISCOVERY PLAN – ABORIGINAL HERITAGE TASMANIA

Unanticipated Discovery Plan For proponents and consultants dealing with Aboriginal

Heritage in Tasmania

Aboriginal Heritage Tasmania

Natural and Cultural Heritage Division

Department of Primary Industries, Parks, Water and Environment

This paper provides a Plan that should be followed when dealing with unanticipated discoveries of

Aboriginal Cultural Heritage such as sites and objects. The plan provides guidance to project

personnel so that they may meet their obligations with respect to Aboriginal heritage in accordance

with the Aboriginal Relics Act 1975 and the Coroners Act 1995.

The Unanticipated Discovery Plan is in two sections. The first section primarily explains

mitigation strategies that should be employed when any Aboriginal Cultural Heritage sites or

items are discovered excluding skeletal remains (burials), while the second process deals

specifically with skeletal remains (burials).

Discovery of Cultural Heritage Items

Step 1: Any person who believes they have uncovered Aboriginal Cultural Heritage material should

notify all employees or contractors that are working in the immediate area that all earth

disturbance works must cease immediately.

Step 2: A temporary ‘no-go’ or buffer zone of at least 10m x 10m should be implemented to

protect the suspected Aboriginal Cultural Heritage site or relics. No unauthorised entry or works will be allowed within this ‘no-go’ zone until the suspected Aboriginal Cultural

Heritage relics have been assessed by a recognised Aboriginal Heritage Practitioner.

Step 3: Aboriginal Heritage Tasmania (AHT) in Hobart (ph 6165 3152) needs to be notified and

consulted as soon as possible and informed of the discovery. AHT will then provide further

advice in accordance with the Aboriginal Relics Act 1975.

Discovery of Skeletal Material

Step 1: Call the Police immediately. Under no circumstances should the suspected skeletal remains

be touched or disturbed. The area must now be considered a crime scene. It is a criminal

offence to interfere with a crime scene.

Step 2: Any person who believes they have uncovered skeletal material should notify all employees

or contractors that are working in the immediate area that all earth disturbance works

must cease immediately.

Step 3: A temporary ‘no-go’ or buffer zone of at least 50m x 50m should be implemented to

protect the suspected skeletal remains. No unauthorised entry or works will be allowed

within this no-go’ zone until the suspected skeletal remains have been assessed by the

Police and or Coroner.

Step 4: Should the skeletal remains be determined to be of Aboriginal origin, the Coroner will

contact an Aboriginal organisation approved by the Attorney-General, as per the Coroners

Act 1995.

Unanticipated Discovery Plan

Aboriginal Heritage Tasmania

Natural and Cultural Heritage Division

Department of Primary Industries, Parks, Water and Environment

Guide to the most common sites types in Tasmania.

Stone Artefact Scatters

A stone artefact is any stone or rock which has been modified by Aboriginal people. Often this is

the result of fracturing or ‘flaking’ fine grained rocks to produce sharp cutting or scrapping

implements. The most common stone types utilised by Tasmanian Aboriginal people are silcrete and

chert, on account of their availability and excellent tool making properties. However we also find

hornfels, chalcedony, spongelite, quartzite and other stone types where locally available.

In Tasmania, stone artefacts are typically recorded as being ‘isolated’ (i.e. only one) or in a ‘scatter’

(i.e. two or more within a 50m radius). Stone artefacts are found all over Tasmania, in all landscapes

and situations, and are the most basic indicator of Aboriginal occupation.

Shell Middens

Middens are occupational deposits created through an accumulation of debris from human activity.

Midden sites can range in size from large mounds to small scatters of shell. The most common

shellfish species found in middens in Tasmania are abalone, oyster, mussel, warrener and limpet,

however they can also contain other debris such as animal bone, charcoal from campfires and

discarded tools made from stone, shell or bone These sites are usually found near waterways and

coastal areas.

Rockshelters

Caves and rock overhangs which bear signs of human activity are, for the purpose of the Aboriginal

Heritage Register (AHR), collectively called occupied rock shelters. Aboriginal people utilised these

places for shelter, ceremony and other cultural practices, leaving behind occupational deposits such

as middens and hearths, tools, or in some cases, rock markings. Rock shelters are usually found

where the geology is conducive to the formation of caves and rock overhangs.

Quarries or Stone Procurement Sites

A quarry is a place where material has been extracted from a natural outcrop by Aboriginal people.

The two types of quarry recorded on the AHR are stone and ochre; each typically being located

wherever suitable ochre for painting and decoration, or stone for tool-making appear. Quarries can

be recognised by evidence of human manipulation, and by the debris left behind from processing the

material. Quarries can be extensive or discrete, depending on the size and quality of the outcrop,

and how often it was utilised and visited.

Rock Marking

Rock marking is the term used in Tasmania to define markings on rocks, which are the result of

Aboriginal practices. Rock markings come in two forms; engraving and painting. Engravings are made

by removing the surface of a rock through pecking, abrading or grinding, whilst paintings are made

by adding pigment or ochre to the surface of a rock.

Burials

Burial sites are highly sensitive places. They can occur anywhere, and have previously been recorded

in sand dunes, shell middens and rock shelters.

Table of ContentsFiguresTablesPlatesPart A - Proponent DetailsPart B – Project Description1 Description of Project1.1 Extraction1.2 Processing1.3 Cartage

2 Project Area2.1 Project site

3 Map and site plan3.1 Site works

4 Rationale and alternativesPart C Potential environmental effects1 Flora and Fauna1.1 Flora values1.2 Fauna values

2 Rivers creeks wetlands and estuaries2.1 Erosion and sediment control2.1.1 Stormwater runoff calculations

2.2 Hydrocarbons

3 Significant areas4 Air emissions5 Liquid effluent6 Solid waste7 Noise emissions8 Transport impacts9 Other off-site impacts10 Hazardous substances and chemicals11 Site contamination12 Sustainability and climate change13 Cultural heritage14 Sites of high public interest15 Rehabilitation15.1 Immediate rehabilitation15.2 Progressive rehabilitation15.3 Decommissioning and rehabilitation

Part D Management CommitmentsPart E Public Consultation16 References17 Meander Valley Interim Planning Scheme 201318 Appendices18.1 Appendix 1 – Traffic Impact Assessment – RJK Consulting Engineers18.2 Appendix 2 – Unanticipated Discovery Plan – Aboriginal Heritage Tasmania

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