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(

Two Wells Glasshouse FacilityStage 4

Environmental Noise Assessment

Prepared forThe Victor Smorgon GroupLevel 18, Como Office Tower

644 Chapel Street, South yarra VIC 2141

s4402C1July 2014

{

{

Two Wells Glasshouse Facility - Stage 4Environmental Hoise Assessments4402ClJufy 2014

Page 2

TABLE OF CONTENTS

INTRODUCTION

CRITERIA

Development Plan

STAGE 4 NOISE ASSESSTTIENT

Sound Power Levels

Noise Propagation Model

Predicted Noise Level

CUMUI.ATIVE NOISE ASSESSMENT

Criteria

Assessment

CONCLUSION

APPENDIX A: PREDICTED NOTSE LEVEL CONTOUR

(

.......... 10

,......... 1 I

Two Wells Glasshouse Facitity - Stage 4Environmental Hoise Assessments4402ClJufy 2014

Page 3

INTRODUCTION

An environmental noise assessment has been made of the proposed Stage 4of the Two Wells glasshouse facility, located along Kenner Road, Korunye.

The assessment considers the operational noise levels from the proposal,located in the vicinity of the site, based on:

' the proposed Stage 4 development layout, provided via email from theSmorgon Group 17 July 2014;

' manufacturer's noise data of the ventilation fans, provided via email frovictor smorgon Group 14 July zo14 and E June 2014:

pment

dwellings

the

' previous noise measurements of the wall mounted fans associatedStage 1 and 2 facilities operating under various fan speeds, condSeptember 201 1; and,

' previous noise measurements in and around the boiler room associatedthe stage 1 and 2 facilities, conducted on 2g september 201 1.

The closest dwellings to the proposed Stage 4 facility are located in the order of to thenorth, fronting Simpkin Road, and to the north east, near the intersection of rost andConroy Roads. The location of the facility relative to dwellings in the vicin1y is i

the figure in Appendix A.

The assessment ensures that the operational noise fromrequirements of the Environment protection (NorseJ poticy

relevant provisions of the Mallala Council Development plan.

the proposal ach

2407 and in $o

Two Wells Glasshouse Facility - Stage 4Environmental Noise Assessments4402ClJuly 2014

Page 4

CRITERIA

Development Plan

The subject site and all dwellings in the vicinity are located within the primary

Zone of the Mallala Council Development Plant. The Development Plan has been

and particular regard has been given to the following relevant provisions:

Council Wide Provisions

hturtace Befween Land Uses

OBJECTIVES

1. Development located and designed fo prevent adyerse impact and

between land uses.

2. Protect community health and arnenity and support the operation of all

land uses.

PRIN CIPLES OF DEVELOPMENT GO'VTROL

1. Developmenf should not detrimentally affect the amenity of the locatity orrlnreasanable interference through any of the foilowing:

t (bJ norse;

2. Development should be sffed and designed to minimise negative

existing and potential future land uses considered appropriate in the locality.

6. Development shauld be srfed desrgned and consfrucfed to minimise

impacfs of noise and to avoid unreasonabre interference.

7. Development shauld be consisfenf with the relevant provisions in the

Environment Protedisn (Nolse) Policy,

t Consolidated 15 May 2014.

uction

reviewed

flict

Two Wells Glasshouse Facility - Stage 4Environmental Noise AssessmentS'1402C1Jufy 2014

page E

Environment Protection (Noise) policy 2007

Council Wide Interface Between Land Uses

the current Environment protection (Noise)

(Noise) Palicy 2007 (the poticy).

(

Principle of Development Control 7

Policy, which is the Environment

The Policy establishes goal noise levels based on the Development plan Zone infacility and surrounding dwellings are located. For a proposed development anddwellings in a Primary Production Zone, the Policy recommends goal noise52 dB(A) during the day (7am to 1Opm) and 4s dB(A) at night (1Opm to 7am).

The Policy applies penalties for an impulsive, tonal, modulating or low freqcharacteristic that effectively reduces the goal noise levels. For a penalty to bePolicy requires the charaoteristic to be fundamental to the nature and impact ofand be dominating the overall noise impact rather than simply being a part of it.

The noise from the facility is predominantly from the operation of the ventilationnormally Broduce a constant and non-tonal noise. Previous noise testing of the wallfans associated with Stages 1 and 2 exhibit a constant and non-tonal chdwellings when operating.

Notwithstanding the above, as a conservative approach, a S dB(A) penalty has beto the goal noise levels. The application of the penafty reduces the goal noise$tage 4 development to 4T dB(A) during the day and 40 dB(A) at night.

It is noted that the criteria applied in this assessment are more stringent than thenoise levels for a domestic air conditioning unit in a residential area and thenoise levefs of the world Hearth organisation (wHo) Guidelinesz.

2 Berglund, Lindvafl and Schwela, 1999, "Guidelines for Community Noise'.

levels of

noise

ied, the

e notse,

ns which

mounted

r at the

applied

for the

llowable

mended

Two Wells Glasshouse Facility - Stage 4Environmental Noise Assessments4402ClJuly 2014

Page 6

STAGE 4 NOISE ASSESSMENT

The main noise sources at the proposed facility are the ventilation fans due toPower generation units and boilers are also associated with the facility;

as inputs to the prediction model are summarised in the table below. The quantinoise source considered in the model is also provided.

r number.

r their

{

contribution is significantly lower than the fans when determined at the dwellivicinity.

gs in the

It is noted that the fans stage their operation according to the temperature anconditions of the glasshouse, and therefore are seldom required to be operatednight period. Notwithstanding, an assessment for night-time operation has been m

$ound Power Levels

The sound power levels for the main noise sources associated with the propose Stage 4facility have been based on the following:

review of the available manufacturer,s test data;

previous noise level measurements at a range of distances and anglesexisting fan installations and boilers associated with Stages 1 and 2; and,

' calculation of the sound power levels based on the above data and measur ments.

The resultant sound power levels (SWL) of each main noise source which have bJ

humidity

uring the

de.

from the

en used

of each

Two Wells Glasshouse Facility - Stage 4Environmental Noise Assessments4402C1July 2014

Page 7

Notes: 1 - Based on the 810kVA generator sets.

2 - Based on a boiler set of a similar size and arrangement to the Stage B boiler.

The assessment is also based on a total of 656 vents on the glass house roof (including thetrial glasshouse), each with an open area of 3.Sm2.

Noise Propagation Model

The noise from the proposed facility has been predicted using the CONCAWE3 noisepropagation model in the SoundPlan noise modelling software. CONCAWE considers windspeed, wind direction, temperature, time of the day and level of cloud cover.

The worst case (highest noise level) weather conditions for noise propagation,corresponding to CONCAWE Weather Category 6, have been considered in the noisemodel. These conditions correlate to nighttime operation with no cloud cover (providingconditions for a temperature inversion) and a breeze from the facility to the dwelling underconsideration.

t tj* oil companies international study group for conservation of clean air and water in Europe,"The propagation of noise from petrochemical complexes to neighbouring communities'.

Noise SourceEtr.E5g

SWI- (dB(A)) by octave Band ffi TotalSWL

(dB(A))63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz

vantilation FanWall mounted fan -Trial Glasshouses I 72 82 82 85 83 78 v1 90Wall mounted fan - Inlet(Climate Corridor) 407 56 62 68 73 77 75 71 81

Wall mounted fan - Outlet(Glasshouse) 407 57 64 71 76 80 78 72 84

Powel Genere ftion Un it-r-Attenuated packageincfuding exhaust 3 75 B9 91 95 96 96 94 102

Boiler U tniBoiler exhaust stack 2 83 82 87 90 86 82 82 94Boiler room louvre 2 66 65 71 7g 77 75 77 84

{

Page I

Predicted Noise Level

The noise from the operation of the ventilation fans, power generation unitssystem has been predicted to the dwellings located in the vicinity of the site.assumes all equipment operating continuously and simultaneously, and the fansfull speed.

Based on the prediction, the noise level at the nearest dwellings fronting Simpkinnear the intersection of Frost and Conroy Roads will be 35 dB(A), therefore eathe conservatively established 40 dB(A) night-time goal noise level of the policy.

Two Wells Glasshouse Facility - Stage 4Environmental Hoise Assessments4402C1Jufy 2014

Noise level contours with all equipment operating continuously and

speed under worst case (highest noise level) weather conditionspropagation are provided in Appendlx A.

simultaneo

for night

the boiler

prediction

ng at

Road and

achieving

at full

noise

Two Wells Glasshouse Facility - Stage 4Environmental Noise Assessrnents4402C1July 2014

Page I

CUM U LATIVE NOISE ASSESS]IT ENT

The noise from the Stage 4 facility has been predicted to achieve thenoise levels of the Policy at the nearest dwellings.

In addition, to ensure that the overall noise from the existing and theachieves acceptable noise levels, the cumulative noise from all noise sourceswith the Stage 1, 2, 3 and 4 facilities has been predicted and assessedcompliance goal noise levels of the Policy. The comp liance goal noise levels wo ld be therelevant levels under the Policy applied to the cumulative operation of allfacility.

Criteria

Based on the zoning of the subject site and surrounding dwellings, and the applic$tion of aconservative 5 dB(A) penalty as discussed above, the compliance goal noise leveblprovidedby the Policy are 52 dB(A) during the day (7am to 10pm) and 45 dB(A) at night ftOpm to7am).

Assessment

The ventilation fans, power generation units and boilers associated with all stages (existingand proposed) of the facility have been included in the noise prediction model operating inaccordance with their relevant operational requirements as provided in the, variousDevelopment Plan consents and summarised below:

Stage (Status) Number of Fans Operational Reguirements1 (Existing) 336 wall mounted

70o/o fan speed (1000rpm) at nigl rt2 (Existins) 384 wall mounted3 (Existing) 416 wall mounted

4 (Proposed) 407 climate conidor fansI wall mounted fans Nil (100% fan speed at night)

ed on the prediction, the overall noise level at the nearest dwelling to the overag the dwelling to the south fronting Temby Road, is predicted to be 4g dB(A) dand 40 dB(A) at night, therefore easily achieving the compliance goal noise leve of

facility,Based

being

day ar

Policy.

nf goal

facilities

inst the

of the

the

the

Two Wells Glasshouse Facility - Stage 4Environmental Noise Assessments4402c1July 2014

Page 10

CONCLUSION

The noise from the proposed Stage 4 of the Kenner Road glasshouseassessed to the nearest dwellings.

facility

The prediction has been based on a conseruative assumption of worst case (higllevel) weather conditions for noise propagation, colnprising a clear night sky w1hfrom the facility to the dwellings under consideration. The prediction also assumsources operating continuously and simultaneously at full speed during the night,unlikely operational scenario.

notse

breeze

all noise

ich is an

Based on the prediction, the noise from the proposed Stage 4 development will:I easily achieve the requirements of the Environment protectian (Noise/ polic 2007 at

all surrounding dwelfings;

be less than the aflowable noise levels for a dornestic air conditioning unit; aeasily achieve the sleep disturbance criterion recommended by the W HealthOrganisation.

fn addition, the cumulative noise from all stages (Stage 1,2,3 and 4) has beenwhen operating in accordance with the relevant conditions of Devefopment planThe combined noise level from all stages will achieve the requirements of theProtection (NoiseJ policy z00T at all surrounding dwellings.

Based on the above, it is considered that theDevelopment Plan are satisfied.

relevant provisions of the Mallala i Council

I

I

t

s4402C1July 2014

APPENDIX A: PREDIGTED NOTSE LEVEL CONTOUR

Page 1 1

HAPPENDIX A

Frgur€ A.1 - Predictednose level contour undsr worst-case meteorological cafl datians

Two WellsGlaeshouse FacilityStage 4Operational Noise

WorEl€as€ M€teorologicalCondrtrsrs

Document Control Sheet

ReportTltle: Two wells Glasshouse project - Integrated water Management plan stage 4 Exp; rston

SuggestedReference:

Two Wells Glasshouse project - Integrated water Management plan stage(Design Flow, J uly zor4)

Expansion

Verslon: Final

Cllent: Victor 5morgon Group

Autho(s): RalphWilliams

Revlewed By: Robin Allison

Approved By: Robin Allison

Date: 1417lzo14

Flle locatlon: DesignFlow Server/y6o

Clrculatlon: Electronic Copies: Victor Smorgon Group

Printed Copies:

Disclaimer

fhis document has been prepared solely for the benefit of the client identified below, and is issued in cor)urposes only for which it is supplied. Unauthorised use of this document in any iorm whatsoever isiability is accepted by DesignFlow consulting Pty Ltd, or any employee, contractor or sub-consultant oli/ith respect to its use by any other person

fhis disclaimer shall apply not withstanding that the document may be made available to other persons for'or permission or approval to fulfil a legal obligation.

l'he findings of this document have been based on data provided to us by the Victor Smorgon croup antccepted by DesignFlow consulting Pty Ltd, or any employee, contractor or sub-consultant Jf this comFar:o the reliability of this data.

rotentlal lmpllcatlons of cllmate changeJnless expressly stated otherwise, historical climate data has been used in, or underpins, the analyses tharn this report. The historical climate is not necessarily a valid indicator of future climate, which may conreriods that are wetter or drier than the historicil record used for this analysis. ih.r. is significa;urrounding how climate, and in particular, rainfall, will be impacted by various levels of greenhousJgas a,'he atmosphere. Rainfall has a much greater spatial variabitiiy than temperature and some areas are likvetter whilst other areas become drier. Further to this there may be changes in the seasonality and inteniuch changes in climate could affect the conclusions and recommendation;f this report.

lidence for thrrrohibited. Nrthis companl

an applicatior

I no liability ily with respecl

are presentecrain prolongecrt uncertainl!:cumulation inely to become;itv of rainfall.

tl

tlGI

:e for thebited. Nocompany

ty ispect

presentedprolongedncertainlyrulation in

G

Table of Contents

BGCUTIVE SUirlMARy ..,,.........r...r.....ri.t Background

1.1...... Scope of works""".t.'

2 stage t- 3 operational Data ,,...,,.,..r.rr,.!,,,,,r,,,,r!.r.,,...,,,,,.....i..,,irr.,....,,.,.2.'t ..... Stage 4 total water demand estimates .. .. . .. r.. r r. ..,..

3 Stage 4 bqansion Required Holding Storages3.r ..... On-site pond storage3.2..... lrrigation and cooling water storage tanksRO Brine management

References

............1

...........4

.......... 5..........5.......... I

4

5

e DesignFlow

EXECUTIVE SUMMARY

This report presents a water management plan for a proposed expansion (Stage 4) of thetruss tomato glasshouse facility at lot 483 Cermantown Road, Two Wells. Stage 4 consistsof an additional 8 ha of greenhouses for the cultivation of truss tornatoes, bringing the totalarea to 35ha. The facility has now been in operation since zoo7.

Currently water is supplied to the site from the Virginia Pipeline Scheme (up to 2.7 ML/d).This water is then treated on-site through a reverse osmosis (RO) plant to reduce salinitylevels to below 25 ppm, suitable for hydroponic truss tomato cultivation. ln addition, roofrunoff is captured and contributes to water for cuttivation.

Water delivered and treated on-site is stored in freshwater ponds (iBoML total). Brinedischarges from the RO plant are directed to a 3.Bha evaporation pond (fefML storage), Aspart of stage 3 upgrades and operation, brine stored in the evaporation pond is now directlydelivered to the cooling pads. Once this supply is exhausted, water for cooling is sourcedfrom the freshwater ponds. This operational change provides an efficient means ofmanaging waste discharges frorn the Ro plant as well as reducing the overall demand forBolivarwater by recycling allwaste discharges on-site.

This report uses the most recent operational configuration and data to determine estimatesfor crop and cooling water requirements, which are then used to size water storages andwaste disposalfacilities to support the Stage 4 expansion.

RECOMMENDATIONS FOR STAGE + EXPANS|ON

The following are recommended for Stage 4 expansion:

. Provide an additional ToML holding storage minimum for storage of treated Rowater. The total stora8e to meet expected demands to Stage 4 is thus zsoML

Increase the existing evaporation pond storage to 75ML. This will require theexisting pond bund to be raised by approximately rm.

Increase the allocated supply from the Virginia Pipeline Scheme (Bolivar) fromTooML/a to gooML/a to meet expected demands for Stage 4 operations. peal<

supply rate can be maintained at z.ZM L/d.

The above recommendations will provide a reliable supply of water, even during extremeheat events and will manage all waste and stormwater runoff safely, even during extrernewet years.

Two We[ls Classhouse Project - Integrated Water Management plan Stage 4 expanslon

w DesignFlow

BACKGROUND

An integrated water management plan is required by The victor Smorgon Group for aproposed Stage 4 expansion of the truss tomato glasshouse facility, located at lot 4g3Cermantown Road, Two Wells. Stage 4 consists of an additional I ha of greenhouses forcultivating hydroponic truss tornatoes. The total glasshouse area for stages i to 4 combinedis 35 ha.

The facility has now been in operation since late zoo7. As part of the stagedimplementation of the greenhouses, on-site facilities such as the freshwater storage pondsand reverse osmosis (RO) plant have been increased in capacity to meet the increaseddemands for water. As part of the Stage 3 upgrade a new r.zML/d Ro plang has beeninstalled, and a new'noM L freshwater pond was built.

Operational changes have also occurred during this time to better use waste dischargesfrom the Ro plant. During Stage 3 operations, brine discharges stored in the evaporationponds were delivered to the greenhouses for cooling purposes. This change has meant allbrine discharges are re-used within the facility, significantly decreasing the need for largeevaporation ponds and also reducing the total water demand required from Bolivar.

current facilities installed for stage 3 operations include:

Maximum supply from Bolivar at z.7M L/d

RO plant capable of treating z.z7M Lld

zx35ML plus rxrroML freshwater pondsharvested roof water

for storage of treated RO water and

r 3.8ha evaporation pond x tm deep (feM L storage)

Operational data such as crop and cooling water use with the new configuration is nowavailable for use in Stage 4 sizing.

r.r Scope of worksInvestigations to develop a water management plan for stage 4 include:

r review Stage I to 3 operational data to refine seasonal water use

' develop an updated water balance model for Stage 4 with the new operatingconfiguration and data

' scenario modelling to determine required holding storages for Stage 4r f€view of evaporation pond perflormance.

Reference is made to the original Stage t (ACT, zooT) and subsequent Stage z and 3 reports(DesignFlow' zolo and zott) for detailed information on the overall operation of the facilityover these stages of development. This report is intended as an attachment the previousreports to avoid duplication.

Two Wells classhouse project - Integrateo water lvtanag

riiifl't{I

STAGE 1- 3 OPERATIONAL DATA

Stage 1-3 metered operational data has been review over the last rz months. Th capturesthe new operating configuration of delivering cooling water from the evapora on ponds,when available. This period represents a generally average winter rainfall peri but a hotsummer, with numerous days recorded over 4o degrees in January and Febru ry (rr daysnoted). Table r and Figure i provide a summary of the zor3/2o14 monthly opfor Stages l-3 combined.

Table I Stage t-3 metered operational data 2ot3-zot4

Figure r Metered water use Stage r-3 zol3-zor4

onal data

Jul-13

August

September

October

November

December

Jan-14

February

March

April

May

June

2L.t74.7

31.1

47.3

64.5

66.7

72'6

55.3

45.4

31.1

2?.6

19.7

1.5

1.1

8.4

15.5

25.3

35.5

48.8

36.9

23.L

11.3

4.4

0.8Total Jul 2013-Jun20

tilo

120

1m

JilE*oET

*coEI

40

2g

0

JIJL AUG sEP OCT NOV DEC JAN FEE MAf, APR MAY JUN

r cooling

t Crop

Two Welts Classhouse Project - Integrated Water Management plan Stage a fxpansion

I oesignFtowI

In general, crop water use has remained consistent over the life of the facili[y and hasgenerally ranged from t7-zoML/ha/a. Cooling water dernands vary from year to year and arehighly dependent on ambient conditions. The operational data from 2ot3-14 represents ahigh demanding year, and was double the demand experienced in zoro-zorr (7.9M1/ha/acompared with 3.9M1/ha/a), for exampte. The current data exceeds the previous highexperienced during the zooS/og period, which captured the extreme heat wave during thatsumrner period (cooling water use averaged 7.r Ml/ha/a).

2.1 Stage 4 total water demand estimatesOperational data from 20]3-14 has been used to determine Stage 4 dernands for sizingpurposes. As mentioned previously, this data captures the new operating copfigurationdrawing water directly from the evaporation pond for cooling, as well as capturing extremesummer conditions. This data provides a good data set for reviewing performance underextreme summer conditions and could be considered a conservative approach for sizingpurposes.

Stage 4 consists of 8 ha of new glasshouses, increasing the overall glasshouse area from z7ha (Stage r-3) to 35 ha. The expected seasonal water demands for both crop and cooling forStages 1 to 4 combined, considering Stage t-3 operational data from July zoi3 to June 2014,are summarised in Table z and Figure z. For information purposes the current maximumsupply rate (z.7ML/d) available is plotted to show when water demand exceeds supply.These periods represent when water will be drawn from on-site buffer storage to keep upwith demands. This shows that demands from october to March are likely to exceedsupply, with peal< demand periods duringJanuary to February.

Table z Projected Stages l-4 water demands

,,Il40nth Ctop water fMLl' f,ooling nrater lMtl rotail{dtll :

July

August

September

October

November

December

lanuary

Februa ry

March

April

May

lune

77.3

32.0

40,3

67.4

83.6

86,4

94.1

77.7

58.9

40.3

29.4

25.5

1.9

1,5

10.9

20.1

32.8

46.2

63.3

47.8

29.9

L4.6

5.7

1.0

29.3

33.5

51..2

81.s

116.4

132.6

r57.4

119.5

88.8

55.0

35.0

26.6Iotal Jul 2013-Jun2014 550.9 275.9 9?.6.7Equivalent per ha demand per vear 18.6 7.9 26.5

Two Wells Classhouse project - Integrated

maximum supply rate2.7Mud

MAY JUN

Figure z Projected Stage r-4 seasonalwater use

As mentioned previously, cooling water demands can be variable and annual es mates forre milderStages t-4 could be more than rooML/a lower than those presented above, in

summer conditions.

4owill(tra

site

lrs \

lexon:

Stage

. This

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red on

lrStL. '

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ore

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lM

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m;

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ower

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3 STAGE + EXPANSION REQUIRED HOLDING sToRAGEs

On-site holding storages are required to provide sufficient water for operations during theentire year. The main holding storage facilities considered include:

Freshwater pond for storage of Ro treated Bolivar water todemands for greenhouse operations (crop and cooling). Thisrunoff from greenhouse roof areas.

rneet peal< summerpond also captures

Buffer storage tanl< for Virginia Pipeline Scheme (Bolivar) water prior to on-sitetreatment using a RO plant (installed and no upsizing required for Stage 4).

crop irrigation storage tanks to allow dosing with fertilizer etc.

Recycling tanl<s to allow storage and treatment of crop water drainage prior torecirculation into the greenhouse.

. Evaporation pond for storage ofgreenhouses for cooling purposes.form the main freshwater ponds.

RO brine. This water is then delivered to theThe evaporation pond also receives overflows

' Cooling water tank for delivery of water for the evaporative cooling systern.

Based on Stage 3 operational data for zor3/r4 (refer to Table z), total annual crop andcooling water requirements are expected to increase to approximately gz5 ML/a. Currentcontracted supply rates limit the maximum delivery rate to 2.7 ML/d. The currentcontracted allocation is 7oo ML/a. Based on the projected annual demand, and increase inallocation will be required for Stage 4 operations. The current maximum supply rate of2.7M1/a however is retained. These crlteria are used to size required storages to maintain asecurity of supply.

3.'t On-site pond storageFreshwater pond storage is supplied from the RO plant. During Stage 3 a new Ro plantcapable of delivering t.oML/d of treated water was installed (considering a supply rate ofr,zM L/d). This now increases the overall treated Ro su pply to z.z7M L/d.

operation to supply sufficient water for crop and cooling considers supply at the maximumdelivery rate of 2.7M1/d, of this z,z7M L/d is directed to the freshwater pond. Cooling wateris considered from direct supply from the evaporation pond as we1 as surplus deliveredwater not treated by the Ro plant. When storage within the evaporation pond is depleted,water for cooling is drawn from the freshwater pond.

A water balance model has been developed for the above operation. Seasonal demandshave been based on projected Stage t-4 data, as per Table z previously. The water balanceaccounts for roof runoff from the greenhouse roof, plus rain that directly falls over storages.Evaporation from the ponds is also considered.

Two Wells Classhouse project - |ntegratE

t!,i1ri;1.

IsignFlour

As a conservative approach zero rainfall was assumed during the summer mNovember to March, This thus assumes no harvested rainfall is availablemonth period. This combined with the operational data for zor3/2o14,demands were at their highest, provides a conservative approach to sizing on-sito provide a guaranteed supply for operations.

The following storages are recommended to meet the requirements for Stages r t

r holding storage for treated Ro water - freshwater pond: z5olr,lL (i.e. zoin existing storage)

. holding storaBe for Ro brine and non-RO water: 35ilrlL

3.1.t summary of Stage 4 expansion operating requirements

Using the storages above the following estimates of water balance for S

operations are made (based on zor3/14 operational data). These values areconservative and will vary depending on the climatic conditions:

. total water required for crop irrigation: 65o M L/a

total water required for coolinE z7s MLla (note: cooling demands are vis considered at the high end of use based on zor3/i4 operational data)

total direct cooling water supplied from non-RO water: r:gML/a

total water required for crop and deficit cooling requirements:zgzML/a

rainwater harvested - freshwater pond: 58 ML/a (note assume zero raMar)

(but not supply rate) will be required. This will be delivered to site in no peal<

stored on-site.

Figure 3 provides a summary of the modelled Stage 4 operation basedoperationaf data.

ths fromthis four

n coolingstorages

r RO make up water required:7zg ML/a

r total Bolivar supply required: 862 M L/a

From the above, the total stage r to 4 required Bolivar supply is estimated at 867 L/a. Thecurrent contracted allocation of 7oo ML supplied from the Virginia Pipeline rne is notsufficient to meet projected demands for the Stage 4 expansion. An increase in llocation

4:

L increase

1tO4nsidered

e. This

fall Nov-

riods and

zot3/t4

Two Wells Classhouse Project - Integrated Water Management plan Stage + Efparrsion-

HarvestedBolivar water?.7MLld

I nerionFlow

RO brine plus

non-RO water0.43MVd

Figure 3 Summary of modelled Stage 4 requirements - based on 2o't3/r4 data

The existing fresh water storage of t8o ML (zx35ML and rxtroML) is insufficient to meet theexpected increase in demands for Stage 4. An additionat 70 ML storage minimum isrequired to be constructed to provide an adequate security of supply for Stage I to 4demands. Roof water from Stage 4 operations can be directed to this new pond.

3.2 lrrigation and cooling water storage tanksStorage tanks are provided adjacent to the greenhouse area to facilitate dqsing withfertilizers for crop irrigation and to provide a delivery tank for cooling water. Treated waterfrom the RO plant is initially directed to crop tanl<s, before ovedlowing to the freshwaterpond. Additional tanl<s are also provided to store and treat drainage water from the cropready for re-use.

For stage 4 expansion the following tanks are to be installed:

o I x r.433M L tanl<s for crop irrigation

r rx r.433ML kL tank for cooling

. 4 x 523 lcl tanl<s for crop drainage

These tanks also provide an additional back-up supply should delivery of Botivar water beinterrupted, and no addltional storage is available in the freshwater pond.

TwoWe||sGlasshouseProject_|ntegratedWatertvtanage

w oesignFlow

RO BRINE MANAGEMENT

On-site management of waste discharges (RO brine) for Stage I to 3 operations is currentlymanaged using a 3.8 ha evaporation pond (storage:8ML). Discharges to the pond includefilter backwash and concentrated brine from the RO plant. The pond was previouslyoperated to receive brine and then evaporate, no re-use of this water was considered.Evaporation pond sizes were chosen accordingly.

During Stage 3 operations, water held in storage in the evaporation pond was directed tothe greenhouses for cooling use. This has proven successful and alJ water held in storage inthe evaporation ponds is re-used in the operations. This re-configuration allows fulldrawdown of storage in the evaporation pond, and reduces the need for external Bolivarsupply of water for cooling. This also provides a more reliable means of managing largestorm events on site, without the need for excessively large evaporation pond areas.

For the purposes of the Stage 4 expansion, the pedormance of the evaporation pond tomanage waste discharges is presented. This is based on the water balance modelleddeveloped previously with an evaporation pond area of 3,Bha.

Figure 4 indicates the modelled variation in evaporation pond volume considering anextreme hot year scenario (based on zoBh4 data where high cooling volurnes wererequired) and an extreme wet year (based on t922-23 rainfall data). This figure clearly showsin both scenarios the evaporation pond volume is drawn down during summer.

Figure 4 Evaporation pond performance Stages r-4

5fi)fi)

an

Ef 400mE!'

E

E 30000aEI!R 20000

gt

10000

jun iul aug sep oct nov

-extreme hotyear

dec ian feb mar apr mtry iun

-extreme wet year

Two Wells Classhouse Project - Integrated Water Management Plan Stage 4 Expansion

It:i$s,

I

Note: the conditions during lgzz-23 have been found in previous analysis to repworst case scenario for the evaporation pond over the tooplus years of rainfall r

Two Wells. This rainfall pattern is characterised by high totals during the winter n

Table 3 presents the modelled values used in each scenario.

Table I Modelled data for evaporation pond performance assessment

srgn

eser

tcorontl

Flow

It theCs forls.

{

iulaug

sep

oct

nov

dec

ianfeb

mar

apr

may

iun

6?.8

50.8

39.2

14.2

5.6

20

6.8

95.6

20.6

40.6

90.2

57.6

93.2

34.9

27.4

29.3

0

105.4

6.6

1.3

0

2

120.4

113.4

1947

1488

10930

20144

32804

46150

63?88

47822

29913

14tr95665

1045

41

81

935

9482

15343

28569

38011

26901

10459

5738

2034

?.44

33743

3s278

28904

17325

0

0

0

0

0

0

902s

?1547

400

444

484

470,

3$1

2X3

0

0

0

38€

176i

331,504 534 275856 137839

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Twt

;ed on the modelled performance, the current evaporation pond volume ofvide sufficient storage during normal operations, but in wet years there will btrtopping. For the extreme wet year event modelled (considered to represent int), the pond volume is estimated at approximately 5oML.

; recommended that the evaporation pond be increase to 75ML to provide safe:td waters on-site. This allows for a freeboard above the expected peak volumes'eadily achieved by raising the bund around the pond by rm.

We||sG|asshouseProject-|ntegratedWateruanage

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ro

II t

s REFERENCES

Australian Groundwater Technologies, (zoo7). "lhtegrated Water Plan - Twol lls - FinalReport". Prepared forTimbercorp.

DesignFlow, (zoro). 'Two wells Glasshouse prrject - lntegrated waterStage z Expansion". Prepared forVictorSmorgon Group.

Plan

DesignFlow, (zolt). ). 'Two Wells Glasshouse ProJect- Integrated Water MaStage 3 Expansion". Prepared forVictorSmorgon Eroup.

Two Wells Elasshouse Project - Integrated Water ment Plan Stage 4 Expansion

ASSIA|DE lMEUCruf,il€

(

q

Our Ref: 224561

GLASSHOUSE DEVELOPMENTTWO WELLS . STAGE 4

1. STORMWATER MANAGEMENT

Roofwater from the new glasshouse roofs is to be collected in a pipe system and dralned direclyto the new 180ML Roofwater Storage Basin. The estimated annuat runoff from the robfs to thebasin is approximately 32 ML/a. Glasshouse usage is significantly more than this. Hehce this basinwill also be supplied by excess water from the Stages 1, 2 and 3 storage basins whicfr, in turn, arepartially supplied by treated recycled water. This stored water will be re-used in the gl^owingprocess.

I

The runoff from parking areas and building surrounds will be collected and diverted vla pipes andswale systems to the new and existing storage ponds.

I

The Roofiuater Basin is to be constructed with its walls approximately 3.0m above tnJ surroundingground level. Hence surface stormwater flow is unable to enter these water storage $onOs.

I

Provision was made in Stages 1 to 3 for a flood path from Kenner Road throuqh tne Jite. inaccordance with advice from Tonkin Engineers. Stage 4 also has provision toitnis fldod path in theevent that stormwater runoff occurs from upstream

i

I

In the event of larger storms (up to 1 in 100 years Average Recurrence Interval - ARil the roofcollection system may overflow. Hence portion of the roof catchment, together with srJrface flows,may cause the surface water dams to overflow or be bypassed. The glaishouse buiding platformwill be above the general ground level for bulk earthworks reasons. Measures have nbe-n'incorporated to manage the upstream runoff waters and transport any excess througfl tn* site inlarge rainfall events. Drawing PL01 indicates flow paths in the event of a 1 in 100 VElrARl storm.

Flood mapping has been provided by Council for the region. (Light River Floodplain lr,iappins sheetI of 12) The mapping shows a 1 in 100 yearflow path, howeveinone of the floodplair|s'snoiln inthis map has any affect at Stage 4.

2. DAM LINING PROVISIONS

2.1 Roofrvater Basin

The 180 ML Roofinrater Basin will collect and store clean roof stormwater runoff and

FO Esr 707Kent Town 5A 507I

42 tullarton ftdFlcrrwsod 5A 5$$?

F 08 8363 ffrer 08s3631555ABr{ 5f,00t0il t85

tmg*ngrnae ri ng.rr:m.a r.r

nthetic linerbasin was

osmosis (R-O.) treated Bolivar water. This basin is proposed to be lined with HDPE sto avoid potential losses from seepage and increased turbidity which might result if thnot lined.The liner is proposed to be 1.Smm HDPE impermeable welded membrane. lt is that

The basin

ffi;d

r(sl?otl

three wells be constructed to permit monitoring for any potential leaks from the storag

will be constructed with lined slopgs not steeper than 1 in 3, and will be fenced to pfor non-authorised persons for safety reasons. Escape ropes or similar will be provinormal OHS&W systems for the project.

2.2 Local Surface Runnoff Stormwater Ponds

The local Runoff Stonnwatgr Ponds will receive water from natural surface runoff, athe developed site surrounds, including the carpark. The latter may contain smallcontaminants from the carpark, access roadways and gravel surfaces. The water

The glasshouses is to be constructed on a single east-west level. Each glasshousgapproximately 220mm from the centre to the north and south edges for roof drainag

It is not expected that significant surplus soil will result from this project. Any surptusin mounds or removed from site in accordance with EPA requirements.

absorption beds for effluent disposal. The disposal area is currently located withinwill be affected by the stage 4 earthworks and infrastructure.

Hence it is proposed that this disposal area be replaced with an equivalent area comstage 4 effluent disposal just east of the new stage 4 glasshouse.

Stage 4 is proposed to be serviced by a new septic tank, pump station and disposalindicated in Figure PL02. The Stage 4 usage pattern will have similar but lower florrcurrently occurring in Stages 1,2 & 3, since the number of employees in this Stagethe previous stages.

H:LSynergy\FrojectsV0l4\2014-0141 Section 506 Germantown Road, Korunye - Stage 4 Glasshouse Development\FinalReports\S023 56]24561 _Planning report (ID 41543\-21-07-14.docx

accessas part of

runoff fromunts of

ponds will be reused for site irrigation, and possibly also diverted for R.O. treatmerirt evaporationin the evaporation ponds. These ponds are to be constructed within the site clay sopond between Stage 2 and Stage 4 will be modified and enlarged to accommodaterunoff catchment.

. An existing

3. EARTHWORKS AND ROADWORKS

red in these

n increased

llspurposes.

The glasshouse building pad and water storage ponds will be formed as a cut to fill peration.

lf there are any surplus soils to be taken off site then an environmental assessmen[undertaken by an environmental engineer. This will involve a Site History Report, fblsoils sampling and testing program. The latter will be formulated taking account of A

lbe

be utilised

bya.1 to

ascertain the presence of any contaminants and the uniformity of the soils.

A new access roadway will be constructed from Germantown Road. This will p access foremployee cars, transport trucks and emergency vehicles. An employee carpark willwhere indicated on the drawings. An outloading truck loading dock will be included,runoff from this recessed dock will be collected and diverted to the local runoff pondgravel service roadway will be provided to the perimeter of the glasshouse.

provided

by pump. A

4.0 SEDMP

A Soil Erosion and Drainage Management Plan has been prepared for the project.separate report.

5.0 WASTEWATER MANAGEMENT

The proposed Stage 4 development will result in an increase in the number of em on site.The existing (Stage 2) treatment system is a septic tank, pump station and eva

area which

rga, asthan arel be less than

The Stage 4 office an amenities area will be serviced by a system which is similar toat Stage 2. This comprises an 8000 litre septic tank, small pumping installation and i

at provided

buffer zone.

FI

300m2 of evapo-transpiration absorption beds. The lafter wilt be loiated in or near thrA separate Waste Control System application will be made to Council for this system

Ee.

H:\SynergylProjects\2014\2014-0141 Section 506 Germantown Road Korunye , Stage 4 Glasshouse Development\FinalReports\SO23 56J24561 _Planning report (ID 4t 543)-ZI-OZ-l 4.docx

A9EL*rDE lMflsouRFtf

Our Ref: 224561

16 July 2014

Construction Management Plan

A Soil Erosion and Drainage Management Plan (SEDMP) has been prepared for thebased on the EPA Stormwater Pollution Prevention Code of Practice, experience frotand 3 site developrnent and soils testing.

The SEDMP is an outline of measures required. The measures will require alteratiophases of construction. ln particular, during the bulk earthworks phase sediment coneed to be temporarily moved to allow safe and practical rnovement of earthworks mthe site. Fences will need to be reinstated to the intenl of the SEDMP during downtimensure control of sediment movement, although the current drainage path through thr

normal rainfall conditions. lf an extreme rainfall event is predicted, bunding can be instormwater flow path at various points (prior to exit from site).

Construction sediment ponds will be de-silted at the end of earthworks construction,permanent local surface stormwater collection ponds.

The SEDMP has been designed to separate construction activities from the existing

SEDMP - Refer Drawing P104.

Dust managernent will be by regular water truck watering of the site during earthworltemporary rubble access tracks and early establishment of grass cover to topsoil mo

A summary of the various activities and responsibllities with regard to the site construmanagement is shown in the attached schedule Summary of Construction Managemr

construction contract specifications will require that EPA requirements be met, with piemphasis on hours of operation and maintenance of machines in proper operating io

responsible for implementing and maintaining relevant portions of the plan. The cospecification will include a requirement that noisy machinery must not operate outs

PO Box 70?Kent Town 5A 5071

rtz Fullarton ftdNorwood $A 506t

F 0883630222F 08 8363 f5s5ABH5g08307t 189

fmgengineering.com.au

e. This isStages 1, 2

{at various

I fences willhines withinperiods tosite will

lled in the

become

ations.

provision of

encourage sedimentation during any stormwater flows. Stormwater will not leave the during

{

S.

nnt Plan

lssues. Fuel is not planned to be stored on the construction site. Fuelling will be bydeliveries.

ular mobile

Noise generated by the works is not likely to be a significant issue. Conventionalequipment is proposed to be used and the nearest residence is more than 600 away. The

Compliance with the Environment Protection (Noise) Policy is not expected to be for thecontractors on this project.

The plan provided (PL04) will form part of the civil construction contract. That r will be

lcularition.

ctionthe hours of

7 AM to 7 PM or at any time on Sundays. The contractor will have water trucks on s

5lsl *

continuously for dust control. Previous experience on the site has demonstrated that rs no

significant problem in controlling sediment movement to prevent any transport off the

Glasshouse construction and pond lining activities will have less impact in potentialnuisance. However responsibilities have been atlocated in each case.

The contract will contain environmentat and nuisance clauses such as the following, iimplementing and maintaining the SEDMp:

r The Contractor shall make every reasonable effort to minimise noise, duqt,environmental contamination, traffic disturbance and any other nuisance or lrlandholders, residents or road users near the site of the works.

ion and

addition to

The Contractor shall protect the works against damage caused by the actitor surface waters by means of temporary diversion driins or other methods.

vibration.venience to

of floodwaters

y detrimentalthe damaged

Environmentalresults for all

lf as a result of non-compliance with the requirements of the specification,results or damage to the environment occurs, the Contractor shail re-inst6area to the existing or better condition prior to the commencement of works.

The contractor shall plan, establish, implement and maintain anManagement system to reduce to a minirnum any detrimental environmenstages the Contractor's activities under this contract.

. The Environmental Management System shall beManagement Standards set'and in particular AS14001Sysfems - Epecification for guidance and use,'.

' The Contractor shall monitor the performance of all relevant environprocedures throughout the Contract.

Nett runoff from the site will reduce as a result of the project, due to the collection andrainwater from all of the glasshouse and amenities nulHing ioof areas and the roofwalitseff. This comprises more than l0,/o of the stage 4 glasshouse site.

based on AS1400 Environmental- 1996 " Management

controls and

re-use ofpond

t

M:UobsVD2\ED2D7CB3-BC5F-4A0A-B580-2683151CI3FE\0\4100041999\41837\L\L\S02356:224561_Consrruction Mgr41837).doc

Report (ID

su m ma ry .of construction lvt a na[enrent raa n tssues

Pond -Excess to GH pad fill

stormwater collected in the local drainStormwater Prevention CoOe of praErce forttreearthworla and dust control water.

Handbook for Pollution Avoldance on commercrar & Residentlal Buirdlng Sites.

fMaintain/Modify

Pqcific Environment-#"_ry-

'#AqffiF

Report

TWO WELLS GLASS HOUSE AIR QUALITY IMPACT ASSESSMENT

THE VICTOR SMORGON GROUP

Job lD. 08994

11 July 2014

Gonsulting . Technologies . Monitoring . Toxicology

\\

blB['t

,m 1 zotL

ffit

Adelaide

PROJECT NAME:

JOB ID:

DOCUMENT CONTROL NUMBER

PREPARED FOR:

APPROVED FOR RELEASE BY:

DISCTAIMER & COPYRIGHT:

Pocific Environmenl Operotions pty Ltd: ABN g6IZT

BRISBANE

Level l, 59 Melbourne Street, South Brisbsne eld 410lPO Box3306, South Brisbone eld 4t0lPh: +61 7 3004 6400Fox: +61 7 3844 5858

Unit i,22Vorley StreetYeerongpilly. Qld 4105Ph: +6,1 7 3004 6460

ADELAIDE

35 Edword Sireet, Norwood SA 5067PO Box 3]87, Norwood SA 506ZPh: +6l I 8332 0960Fox: +61 7 3844 5858

Fficift EnLimifed

Two Wells Gloss House Air euolify lmpoct F]ssessment

08994

AQU-SA-002-08894

The Victor Smorgon Group

J. Meline

This report is subject io the copyright slotementlocoted of www.pocific-environment.com @ pocificEnvironment Operotions pty Ltd ABN g6IZlt rcj 642

t0l 642

SYDNEY

Suite l, Level l, 146 ArthurStreetNorth Sydney. NSW 2060Ph: +61 2 9870 0900Fox:+61 2?870A99?

MELBOURNE

Level 10,224 Queen SireetMelbourne Vic 3000Ph: +61 3 9036 2632Fox: +6] 2 9870 0999

PERIH

Level l, Suite 334 Queen Street, Perth WA 6000Ph: +61 8 9481 4961

Fox: +61 298700999

VERSION

I

DATE

i 1.07.2014

PREPARED BY

R. Cholmer

REVIEWED BY

G. Golvin

8994 Two Wells Gloss House AelA Stoge 4 Reporl Rl.docxJob lD 089?4 | AQU-SA-002-08894

PqciftcLimited

DISCTAIMER

Pocific Environment octs in oll professionol motters os o foithful advisor to the Client oreosonoble skill ond core in the provision of its professionol seMces.

Reports ore commissioned by ond prepored for the exclusive use of the clieni. They ore sissued in occordonce with the ogreement between the Client ond pocific EnvironEnvironment is not responsible for ony liobility ond occepts no responsibility whotsoevermisopplicotion or misinferpretotion by third porties of lhe contents of its reports.

Except where expressly stoted, Pocific Environment does not oltempt to verify the occomprehensiveness of ony informqtion supplied to Pocific Environment for ils reporfs.

Reports connol be copied or reproduced in whole or port for ony purpose wjthout theogreement of Pocific Environment,

Where sile inspeclions, testing or fieldwork hove token ploce, the reporl is bosed onmode ovoiloble by the client or their nominees during lhe visit, visuol observotions onddiscussions with regulotory outhorities. The volidily ond comprehensiveness of supplied infnol been independenily verified ond, for the purposes of this report, it is ossumed thot thrprovided to Pocific Environment is both complete ond occurote. lt is further ossumedoctivities were being undertoken of the site on the doy of the site visit(s), unlessotherwise.

8994 Two Wells Gloss House AetA Stoge 4 Report Rl.docx

exercises oll

eci to andenl. Pocificng from the

, volidily or

prior written

informotionsubsequent

ion hosinformotion

thot normoliily stoted

Job lD 08994 | AQU-SA-002-08894

PscincLimited

CONTENTS

I INTRODUCTION'l.l Bockground1.2 Scope of Work1.3 Site Locotion

2 ASSESSMENT MEIHODOLOGY2.1 MeteorologicolDoto2.2 DispersionModelling2.3 Emissions Estimotion ond Assessment Scenorios2.4 Assessment Criteria

3 EMISSION RATES

4 MFTEROLOGICAL DATA USED IN THE ASSESSMENT4.1 Wind4.2 Stobility4.3 Mixing Height

5 RESULTS

6 CONCLUSION

7 REFERENCES

APPENDIX A AUSPLUME TEXTFILE

APPENDIX B STAGE 4 GENERATORS

8994 Two Wells Glqss House AetA Stoge 4 Report Rl.docxJob lD 08994 | AQU-SA-002{8894

I

I

I

34

4

4

5

6

t5t5l8l9

20

25

B-l

26

A-l

t

PacfficLimited

lisl of Figures

Figure l.'l: Sile Locolion wifh Neorest Sensitjve Recepiors

Figure 2.1: Assessmenf ond Dispersion Modelling Methodology

Figure 3.1: Source Locotions

Figure 4.1: Wind Rose for Two Wells GJosshouse Site

Figure 4.2: Tme of Yeor wind Roses for Two wells Glosshouse site

Figure 4.3: Time of Doy wind Roses for Two weils Glosshouse site

Figure 4.4: Frequency Distribution of Siobility Closses of Two Wells Glosshouse Site

Figure 4.5: Mixing Heights of Two Wells Glosshouse Site

Figure 5.1: Predicted Moximum NOz, r Hr Averoge. DGLC - scenorio I

Figure 5.2: Predicled Moximum NOz incl Bockground, 1 Hr Averoge. NEpM - Scenorio I

Figure 5.3: Predicted Moximum Noz, 'l Hr Averoge, DGLC - scenorio 2

Figure 5.4: Predicted Moximum NOz incl Bockground, I Hr Averoge, NEpM - Scenorio l

8994 Two Wells Gloss House AQ|A Stoge 4 Report Rl.docxJob lD 08994 | AGU-SA-002-08894

t5

l6

17

't8

l9

21

22

23

24f

t

PacificLirnlted

INTRODUCTION

Pocific Environment wos commissioned by The Viclor Smorgon Group to prepore on this oirimpoct ossessment of the Stoge 4 exponsion of the existing D'VineRipe tomoto growing foc

olitylity locoted

northeast of Two Wells.

The oir quolity impoct ossessment sssesses the boiler ond generotor emissions which ore forheoling ond corbon dioxide dosing of the sile ond olso generoting electicity for venlilotioncooling ond lighting.

inigotion,

The Sfoge 4 exponsion odds I hectores to lhe exisling 2/ heciore gloss house focility 1 to 3).

I .l Bockground

The existing focility has been hos been developed in ihree sloges with oir quolity impoct ospreviously performed in 2007 for Stage '1, 2009 for Stoge 2 ond 201 I for Stoge 3.

1.2 Scope of Work

The scope of work for the oir quolity impoct ossessment included ihe following

Evoluoiion of the dispersion modelling results ogoinsi the SA EpA Design nd LevelConcentrolion (DGLC) NOz criferion ond the Notionol Environment Protection Meos (NEPM) oirquolity standord for NOz.

1.3 Site locotion

The locotion of the Stoge 4 glosshouses in relation to Stoge l, 2 ond 3 is presenled in Figureneorest sensitive receptors ore olso shown in Figure l.l.

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2 ASSESSMENTMETHODOLOGY

The ossessment melhodology is shown below for ihe following components:

An overview of fhe methodotogy used for the cssessment is presented in Figure 2.1.

Flgure 2.1: Assessment ond Dispersion Modelling Methodology

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8994 Two Wells Gloss House AetA Stoge 4 Repori Rt.docxJob Number08994 | AQU-SA-002-08894

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2.1 Meteorologicol Dofo

For the Stoge 3 oir quolity impoct ossessment o site-specific AUSPLUME meteorologicol doto set wosextrocted for the site locotion from on existing meteorologicol doto set which covered the oreo. Thedqto wos for ihe yeor 2009 ond wos processed in CALMET with surfoce observotion doto formetropoliton ond surrounding Bureou of Meteorology weother stotions. The dctoset used TAPM derjvedupper oir doto.

The yeor 2009 con be considered os o representotive yeor for dispersion modelling purpose$ in thegreoter Adeloide oreo. The 2009 meteorologicoldoto is the some os wos used in the Stoge 3ossessmenl.

2.2 Dispersion Modelling

The dispersion modelling wos corried out using AUSPLUME which is consislent with the previousossessments. Considering the flot terrcrin on the ploins oround Two Wells, AUSPLUME is on opproporiiemodel for the ossessment.

AUSPLUME is on oir pollution dispersion model bqsed on Goussion plume dispersion theory whichpredicts ground level concentrotions of pollutonts downwind from point, volume ond oreo sources. Theground level concentrotion predictions ore determined from dispersion colculotions bosed on hourlyoverqges of meteorologicol porometers provided in q meteorologicol doto file. For predictions ofconcentrotions for overoging periods shorter thon one hour, o peok lo meon rotio is opplied.

The AUSPLUME modelling domoin wos o recepfor grid of 6 km x 6 km wiih o receptor resolulion of 100 mond modelled with building wokes.

An AUSPLUME output text fileo from the modelling is sttoched in Appendix A.

2.3 Emissions Estimofion ond Assessment Scenorios

For the boilers ond generotors, the pollutont of relevqnce for the ossessment is nitrogen dioxide {NOz).The Stoge I ossessmenl demonstroted ihot maximum predicied corbon monoxide {CO} ground levelconcentrotion wos i % of the ossessment criterion. On this bosis, when the potentiqlfor site exponsionwos considered, co wos not included in the follow on ossessmenls.

The Stoge I to 3 ossessments were bosed on the conservotive ossumption of continuous emissions of fulloperotionol copociiy for ihe boilers ond generotors. In reolity, the glosshouses ore not operdted in thiswoy since lighting, irrigotion, heoting ond cooling requirements vory continuously with weotherconditions, hour of doy ond the seoson. Generolly ihe highest power demond, of por with fullgenerotion copocity, occurs on hot summer doys with moximum cooling ond ventilotion demonds.

For this ossessment the generqtor emissions were bosed on power usoge/generotion profiles over eochmonth ond hour of doy os presented in Section 3. The ossessment included two scenorios bosed on onormol operotions scenorio with both gos ond diesel generotors ond o bock up scenorio with the gosgenerotors substituted with bcckup diesel generotors (which gives o higher lotol NOz emission rote).

The boiler emissions were ossumed to be the some os those used in the Stcge 3 ossessment. To occountfor the operotionol differences of the boilers between doytime ond nighttime, the doytime qndnightlime emissions were represented differently. During ihe doy (7om io 6pm) the boiler exhoust flowsore diverted (100%) to the glosshouses for corbon dioxide (COz) dosing. During the night, no dosingoccurs ond the boiler exhoust dischorges ore emilted vio o stock, ofier heot recovery. The dgyfimeboiler emissions qre emitted ihrough ihe glosshouse ridge iop vents ofter circuloiion. To bestchorocterise these emissions, pseudo stocks (with lorge diometer ond low exit velocity) were used torepresent the ridgetop vents.

o Modelling Scenorio I output iextfile.

b We note thot the otmospheric conditions inside the glosshouses ore closely monitored (including monitoring of

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For the NOz/NOx conversion rotios:

10% conversion of NOxto NOzwos ossumed for the generotor ond nighl time boiler emissions onthe bosis thoi the predicted moximum concentrstions occur neor the point of emission fwithsignificont contribution of building wokes).

house residence limes of the boiler exhouststop vents.b

for the doytime boiler emissions bosed on lhe glossbefore releose to the otmosphere through the ridge

NO" emissions from combustion comprise o mixture of NO ond NOz, iypicolly 5-.10% NOz of the sourcec.Once emitted into the otmosphere, NO in ihe plume is oxidised by ozone ond VOCs to form NOz. Therote ol which oxidotion occurs is highly vorioble, depending lorgely on ombient ozone concentrotionsond the rote of turbulent mixing of the plume with surrounding oir. A sufficienly oged NOx plume will,however, comprise mostly NOz.

For this study' the l0% NOz/NOx conversion rotio opplied in ihe dispersion modelling to the generotorswos determined bosed on principles described by (Jonnsen, vqn Wokeren, von Duuren, & Elshout,.|988)

considering the neor field peok impocts. This method occounts for vorying conversion rotesoccording to time of yeor, ombient ozone concenlroiions ond distonce of the plume from the source.Although the NOz/NOxrotio increoses with increosing downwind distonce from the source, ii isimportont to nole ihot ihe totol concenlrotion of NO*decreoses with distonce more rqpidly due todispersion thon the Noz/Noxfroction lncreoses due to conversion.

Alternqtive opprooches for determining Noz/No* froctions include:

conversion of emiited NO* to NOz for predicted ground level concentrotions. This melhod wouldbe unreolistic given the short distonces involved between the point of emission ond ihe predictedmoximum ground level concentrotion.

2.4 Assessmenl Crilerio

The relevont oir quolity impoct ossessmeni criterio for the Stcge 4 exponsion include:

concentrotions (DGLCs) (SA EpA, 2006)

The ossessmenl criterio ore presenled in Toble 2..|.

For the evoluotion ogoinsl the NEPM oir quolity stondord o bockground groundodded 1o the results. The SA EPA Elizobeth Heord Street monitoring stotion doto2009 of /.5 pg/m3wos used.

concentrotion wosNOz 70rh percentile for

b We nofe thot fhe otmospheric conditions inside fhe glosshouses ore closely monitored (including monitoring ofNOz) for optimisotion of growth conditions, olso providing guidonce for occupoiionol heolth ond sofety (OHS)purposes' lt is hence expected thoi fhot the ridge top vent NOz emissions would never exceed OHS levels.

" The proportion of NzO is considered negligible.

8994 Two Wells Glqss House AetA Sloge 4 Report Rl.docxJob Number 08994 I AQU-SA-002-08894

Toble 2.1: NOr Air Quolity lmpocf Assessment Crilerio

158 Ptg/6e (sA EPA,2006)

?461t9/mt (NEPC,2003)

3 EMISSION RATES

274,ffi 275,000 a?fi,Wo 275,4ffi 275,ffi

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t Sock Up Gonerotar Locotion

il Fseudo Stqck Locotions

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Allexisting {Stoge 1 to 3J soruces ond oll proposed sources for the Stoge 4 developmeni or{ presentedin Toble 3.1. The generotor ond boiler source locolions ore presented in Figure 3.'1.

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Figure 3.1: Source locotions

8994 Two Wells Gloss House AQ|A Stoge 4 Report Rl.docxJob Number 08994 | AQU-5A-002-08894

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Toble 3.1: Exisiing ond Proopsed Sources

Diesel generotor (Stoge I -3 Gen I ) r,020 kw Existing (Stor e l-3)Dieselgenerofor {Stoge 1-3 Gen 2) r,020 kw Existing (Stor IA I -3)

Gos generotor (Stoge l-3 Gen 3) 4BO KW Existing (Stor e i-3)Gos generotor (Stoge l-3 Gen 4J 1,1 45 kW Existing (Sto p ir3fCummins dieselgenerotor (Stoge l-3 Gen 5) 400 kw Existing (Sto p l-3)Dieselgenerotor (Stoge 4 Gen I ) 648 kW Proposed (S rge 4)

Dieselgenerotor (Stoge 4 Gen 2f 648 kW Proposed (S1 :ge 4)

Dieselgenerotor (Stoge 4 Gen 3) s20 kw Proposed (S1 :ge 4)

Bockup Diesel generotor (Stoge t-3 Gen I ) 400 kw Existing (Sto1 e l-3)Bockup Diesel generotor (Stoge t-3 Gen I ) 400 kw Existing (Sto e l-3)Bockup Diesel generotor (Stoge I -3 Gen i ) 400 kw Existing (Sto1

= l-3)

Gos fired boiler (Boiler I ) I2 MW Existing {Stog e l-3)Gqs fired boiler (Boiler 2) I4 MW Existing (Stog ; l-3)Gos fired boiter (Boiler 3) 9.3 MW Existing {Stog ; i-3)Gos fired boiler (Boiler 4) 9.3 MW Existing (Stog r l-31

Gqs fired boiler (Boiler 5) 9.3 MW Proposed (St rge 4)

Gos fired boiler (Boiler 6f 9.3 MW Proposed (St ge 4)

The peok power requirement for ihe focility, including the Stoge 4 exponsion, is opproximatris understood thot lhe power generotion for the Stoge 4 exponsion will be operoted indepefrom the Sloge I to 3 generotors.

The vorying power demonds ol the site ore monoged in power bonds which ore configurecpreferred generotors to cover eoch bond. The power bonds, generotor configurotions, ondusoge figures for eoch power bond for Stoge 'l to 3 ond Stoge 4 ore presented in Toble 3.1 r

3.3.

Typicol monthly percentoges of durotion of operolion ocross fhe power bonds for the StogeStoge 4 generotors ore presented in Toble 3.4 ond Toble 3.5. The percentoges for ihe Stogegenerotors ore bosed on operolions doto while lhe Stoge 4 percentoges ore estimoted bosoperotions doto for Stoge I to 3.

Job Number 08994 | AQU-SA-002-08894

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Toble 3.2: Power Bqnds ond Generqtor configurotions sloge I lo 3

Tqble 3.3: Power Bonds qnd Generotor configurolions stoge 4

Gos generotor(Gen 3)

Gos generotor(Gen 4f

Dleselgenerolor(Gen 5)

Dieselgenerolor(Gen 1 Stoge 4)

Dieselgenerotor(Gen 2 Stoge 4)

Gos generotor(Gen 3 Stoge 4)

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8994 Two Wells Gloss House AetA Sfoge 4 Reporl Rl.docxJob Number08994 | AQU-SA402{88?4