EIS 918
Rock Flat hard rock quarry: environmental impact statement:
prepared by Kinhill Engineers I S DEPT PRIMARY LYRISTRIES ... ABO1 9666
I I I I I d I [1 I I I I I I I I I I L KI1IULL
Mr and Mrs R. Snowden
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Prepared by: Kirihill fligineers Pty Ltd 100 Hardwick Crescent, HOLT ACI' 2615 Tel. (062)541 444; Fax. (062)541 2444
Septaber 1988 C85005 ROCK FIAT HARD ROCK QUARRY
ENVIRONMENTAL IMPACT STATEMENT
CLAUSE 59 CERTIFICATION
This is to certify that the Environmental Impact Statement set out herein has been prepared in accordance with Clauses 57 and 58 of the Environmental Planning and Assessment Regulation, 1980.
MSc, MRTPI, MRAPI (:M:anager nvironment and Planning, Canberra nhiluc Engineers Pty Ltd
September 1988
I;t1:i1I4ii
IN'IRCIXXTION 1.1 The Proposal 1 1.2 Background 1 1.3 Objectives of Environmental Impact Statement 1
SURY 2.1 Description of the Proposal 2 2.2 Consideration of Alternatives 2 2.3 Description of Existing Environment 3 2.4 Assessment of Environmental Impact 3 2.5 Justification of Proposal and Consequences 4 of not Undeitaking Development 2.6 Mitigating Measures 4 2.7 Concluding Remark 5
I
3.1 Aim 6 3.2 Property Description 6 3.3 staging of Development 6 3.4 Extraction of Material 6 3.4.1 Type of Material 6 3.4.2 Area and Quantity of Excavation 6 3.4.3 Method of Extraction 6 3.5 Haulage of Material 7 3.6 Visual Concept 7 3.7 Final Form of Quarry 8 3.8 Hours of Operation 8
4. CONSIDERATION OF ALTERNPITIVFS 4.1 Alternative Sites 9 4.1.1 Use of Sites and Surrounding Areas 9 4.1.2 Access Infrastructure 9 4.1.3 Distance from Demand Points 10 4.1.4 Comparison of Alternatives 10 4.2 Alternative Forms of the Site after Quarrying 10 4.3 Conclusion 11 I KIWNILL 1 PNE 5. DSQUFIcX OF EXISTI I ' 5.1 Regional Context 12 5.2 Topography 12 5.3 Soils 12 5.4 Hydrology 13 5.5 Vegetation 13 I 5.6 Gou1burn-Borrala Railway 13 5.7 Land Use 14 5.8 Zoning 14 5.9 Planning Proposals 14 I 5.10 Water Quality 15 ' 5.11 Users of and Demand for Hard Rock Product 15 5.12 Sources of Hard Rock Product 16
6. ASSESSMENT OF ENVIRO4EN1!AL IMPACr 6.1 Issue Overview 18 6.2 Visual Impact Assessment 18 6.3 Soil Erosion 20 I 6.4 Water Quantity and Quality 20 6.5 Truck Movements 20 6.6 Noise and Dust 23 I 6.7 Rail Movements 23 6.8 Energy Consumption 23 6.9 Other Issues 24 I 7. JUSTIFIC1VFION OF PROPOSAL AND CX)NSEQUECFS OF NOT UNDERAKING DEVELOPNENT I 7.1 Justification of the Proposal 25 7.2 Consequences of not Undertaking Develonent 25
8. MITIGNFTh& NEASUPES 8.1 Visual Impact 26 8.2 Soil Erosion and Water Quality 26 8.2.1 Diversion of Flows Around the Quarry Area 26 8.2.2 Sediment Traps 27 I 8.2.3 Extraction of Material 27 8.2.4 Protection of Cut Faces 27 8.3 Truck Movements 27 I 8.4 Dust 28 8.5 Archaeology 28 8.6 Rail Movements 28 I REREES AND BIH[IIOGRAPHY
APPENDICES I Requirements of Director of Department of Planning Responses from Public Authorities I Department of I1ain Roads - Grading Tests from Rock Flat Quarry
1.
1.1 The Prc*osa1 Mr R. Snowden proposes to continue using the hard rock quarry on Portion 87 County of Beresford, Parish of Gladstone next to Mnaro Highway about 14 kilometres south of Cooma at Rock Flat. (See Figure 1) Demand for material from the quarry exists with the Department of Main Roads of New South Wales, Cooma Office, Snowy River Shire Council and Cooma-Monaro Shire Council. The quarry will also supply such local demand for hard rock as arises. 1.2 The quarry has been in use for many years, originally it was used for supply of railway ballast for the Goulburn-Bombala railway line. The previous owner conducted minor surface quarrying up until 1983. The proposal site was purchased by Mr R. Snowden in 1983 and since then quarrying activities have been undertaken by Department of Main Roads of New South Wales under Permit to Enter and Royalty Agreements for gravel. Thirty thousand cubic metres of gravel has been reirved from the quarry in the past five years. 1.3 thjectives of Envirorunta1 Inpact Statnt The objectives of the environmental impact statement (EIS) are to: * state the objectives of the proposed works * describe the proposal * consider alternatives to the proposed works * assess the impact of the proposed works on the environment * determine whether the proposed works are justified on environmental, economic and social grounds * outline the consequences of not proceeding with the proposed works * identify measures that will be incorporated into the proposed works to protect the environment.
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I Figure 1 \ LOCATION PLAN (I
KILOMETRES Lc 0 1 2 3 1 5 6 P A TO
ROCK FLAT QUARRY '1 feocA FZA ENVIRONMENTAL IMPACT QOA2ev STATEMENT ( COOMA-MONARO SHIRE 9i ' )
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2. SURY
2.1 Description of the Proposal Mr R. Snowden proposes to continue using the hard rock quarry on Portion 87 County of Beresford, Parish of Gladstone, next to Monaro Highway approximately 14 kilaretres south of Coana at Rock Flat. (see Figure 2) Excavation will take place from a rocky knoll situated in the north-west corner of the site between the Goulburn-Borribala railway and the western boundary. The site will be excavated to a depth of approximately 20 metres. Up to 600,000 cubic metres of material will be obtained from the quarry. Bulldozers and front end loaders will be used to extract the material. Mobile crushing plant will be utilised to process the hard rock. The material will be loaded onto trucks for haulage off site or railway hoppers for transport to the VFT Project. Haulage routes will all use an existing access road and railway crossing to Monaro Highway at the extreme north west corner of the property. Monaro Highway is the major and only road route to sites north and south of the quarry. Material may be transported along the existing Goulburn-Banbala railway to the VFT Project. Quarrying will start on the south-western side of the rocky knoll and progressively remove material, retaining undisturbed faces visible from the monaro Highway until such time as portions of the undisturbed faces become quarried. The remainder of the site will be restored to grazing land after the completion of quarrying. Extraction of material could extend over a period ranging from ten to thirty five years, depending on the level of demand for the crushed rock product.
2.2 Consideration of Alternatives There are many potential sites with similar material to }ck Flat in the Monaro District. Distance from demand points, access infrastructure and the use of site and surrounding areas are determining factors in assessing suitable alternative sites. The Monaro Plain is rural and introduction of further extractive industry would adversely impact on surrounding areas and minor roads. Increasing the distance of the quarry site from Coana will affect the share of the hard rock product market in the Monaro district and positive benefits would not accrue to the Coana residential amenity. 2. EXIST/A/C COAJTOU.eS AT /O,r? //VT'VALS
A 1CA TO 5E EXCA VA TED
OUiVDAQ' cjg GRID GATE
VA TEe COURSES \01 "m~m a CREEis r 1'11 ABAAIDOAIED QUA .€/ES
Figure 2 LOCATION PLAN EXISTING FEATURES
METRES 0 1002003001.00500 600
ROCK FLAT QUARRY ENVIRONMENTAL IMPACT STATEMENT COOMA-MONARO SHIRE
KIIIIULL I KuthiLL 1 Access to high quality roads is fundamental and many alternative sites lack this attribute. I Those alternative locations within the MDnaro district have advantages and disadvantages when caripared with the proposed site. None of the advantages is sufficiently significant for I an alternative to be favoured in place of the subject site. Use of the site after quarrying is limited to return to I grazing due to the benefits obtained from the nodified landform.
2.3 Description of Existing Environment The quarry site occupies part of the side slopes of the Spring Creek valley and varies in elevation from 910 metres I AHD to 940 metres AHD. The quarry site is a rocky knoll with evidence of past surface mining and quarrying along benches. The surrounding area consists of undulating hills rising to 1030 metres AHD. The Spring Creek valley passes the site at 890 metres AHD to 880 metres AHD. Spring Creek and Rock Flat Creek converge downstream of the proposed quarry site. The site is situated within the extreme downstream catchment of Spring Creek and paxtially within the catchinent of Rock Flat Creek. Soils on the site are classified as Prairie soils, Plastic Clays and Black Earths. The site has been cleared and comprises improved grassland which is currently used for grazing sheep. The Goulburn-Bathala railway line enters the site from the north- western corner and exits at the south western corner. The railway reserve divides the site into the western component which includes the proposed quarry site and the eastern component which is used for grazing purposes. Land use around the site has a history of extractive industry. The land adjoining the site is zoned Rural lA and a 400 metre wide strip adjoining Monaro, Highway is zoned Rural lB. Extractive industry is permissible with consent of council within both these zonings. Proposals being considered by the VET (Very Fast Thain) Project include the alignment of the new railway passing within close proximity of the site.
2.4 Assesnt of Enviroinenta1 Inpact Issues identified include visual impact, soil erosion, water quality, truck movements, noise and dust impacts, heritage and archaeology, rail movements and energy consumption. 3.
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The site is currently visible from the following points: * &naro Highway 13Km from Coctna to 19Km from Cooma * "Tynedale" Homestead * Users of Rock Flat Road and Kaludah Road * Surrounding rural properties of "Rock Flat", "Milton Park", "Kaludah" , "Tynedale" and "Mnaro". * Goulburn-Bombala railway line. The proposed quarry area represents less than half of one percent of the total catchment. The runoff (water quantity) at the site will remain dominated by the much larger Spring Creek catchrnent, so that the impact of the proposed quarry on water quality will be negligible.
Water quality downstream will be adversely affected if local runoff or upstream flows are allowed to cross the working areas and stockpiles in an uncontrolled manner. Without I mitigating measures, an increase in turbidity and siltation of the channels can be expected downstream. These potential irrpacts can be minimised by the adoption of a suitable I sediment control strategy (See Section 2.6). Trucks hauling material will generate noise and dust impacts along the roads they use. Road surfaces will be affected and other traffic may be inconvenienced. This quarry will have an overall beneficial impact on the residential amenity of Coana when taken in the district context. 2.5 Justification of Prcçosal and Consequences of Not Undertaking Developnent The proposal is justified largely on the basis of the locational advantages of the subject site. The site is regarded as offering an optimum balance between environmental costs and benefits, within the context of the hard rock product market in the MDnaro district. Alternative sites would be likely to incur substantially higher costs in terms of transport impact, agricultural productivity or residential amenity. Alternative afteruses are not justified. Inability to use the subject site would incur increased environmental and amenity costs. 2.6 Mitigating 1asures
The following measures will be taken to reduce the impacts of the proposed quarry developnent: * Visual
A visual buffer would be provided for the duration of excavation along the Monaro Highway frontage of the site. 4. I KItDuILL I
* Soil Erosion and Water Quality A sediment control strategy will be adopted to minimise any I adverse impacts on soil erosion and water quality as follows: * Upstream flows will be diverted around the quarry area. * 5flment traps will control flow across the quarry I site. * Construction will commence at the southern end, working towards the northern end of the proposed I quarry. * The extent of working areas will be minimised. * Zreas not being worked will be revegetated. I * Truck Itvnts The following measures will be taken to minimise the impact of trucks hauling material along local roads: * Trucks will operate between 7 an and 5 pm on I weekdays and 7 am to 12 pm on Saturdays. * Trucks will be maintained and checked to ensure that silencers are operating effectively. * Weights of loads will be controlled to minimise damage I to road surfaces. I * Dust The following measures will be applied to minimise the generation of dust: * Staging of extraction and restoration to restrict area of disturbance at any one time. * Covering of truck loads. I * Spraying of water onto cut faces and on-site access roads if necessary. I 2.7 Concluding Renark The proposal is justified because it will provide hard rock product to the Mnaro District and incur environmental and I amenity benefit to Cocina residents. Alternative sites were considered, but none caTpared I favourably with the proposed site. As with most forms of development, there will be some adverse I impacts, related largely to quarrying activities and to the haulage of material. Few of these impacts, however, are considered to be I significant especially if the mitigating measures described are instituted. I 5. I I I I P
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DETAILH) DESCRIPTION OF ThE PROPOSAL I I I I I
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3.1 Aim The aim of the proposed hard rock quarry is to supply crushed rock product to the Department of Main Roads Cooma, SncMy River Shire Council and Cooma-Monaro Shire Council for local use, and, if the VFT Project proceeds, to supply railway ballast for this project, and to supply such local demand for hard rock product as arises.
3.2 Prcperty Description The subject site lies within Portion 87 County of Beresford, Parish of Gladstone owned by Ronald David Snowden and Kathleen Bernadette Snowden.
1.3 Staging of Deve1crITnt Extraction of material could extend over a period ranging from twenty-five years to thirty-five years. This time span is based on the minimum yearly excavation of 48,000 tonnes. If the level of demand for the product increases (ie VFr Project construction) then the life of the development will I be substantially shortened. Should this quarry be used exclusively for the VFT Project, Cocxna Section, the quarry I life would be expended within 10 years, 1998. 1.4 Extraction of Material 3.4.1 Type of Material Material to be excavated is Basalt. Grading tests undertaken by DMR Coana are included in Pppendix C.
3.4.2 Area and Quantity of Excavation Excavation will be confined to a rocky knoll situated in the north-west corner of the site between the Goulburn-Bombala railway and the western boundary, measuring 300 metres by 300 metres, as shown in Figure 3. The site will be excavated to a maximum depth of approximately twenty metres and the resultant form will be a flat low rise where a rocky knoll now exists. Up to 600,000 cubic metres of material is winable fran the quarry.
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- ExIS T/C CONTOURS AT 10m JA'7 E'VALS MAJOR i€'OAL3S
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Figure 3 17 QUARRY PLAN TOicSO/L STOCK- PiLE 0S6O IA'fEA/ Sroc' METRES 0 100 200 300 7 / ROCK FLAT QUARRY 87 ENVIRONMENTAL IMPACT STATEMENT COOMA-MONARO SHIRE > KIIIIULL I KUIiULL I I ?thod of Rxtraction The material will be extracted using mechanical excavators, bulldozers and front end loaders. Mobile crushing plant will be utilized to process the hard rock. It will then be loaded I onto trucks for haulage off site or railway hoppers for transport to the VFT Project. No explosive will be used for I extracting the material. 3.5 Haulage of Material The entrance/exit point to and from the site will be directly I onto Monaro Highway. The haulage route within the site will cross the Goulburn-Banbala railway line. The crossing will be upgraded and maintained to S.R.A. of NSW standards with I particular regard given to sign posting for safety. The connection to Monaro Highway has been used previously by I Department of Main Roads N.S.W. A type 1 intersection, drainage culvert and sealing of the access road to a point 100 metres from the bitumen edge (Monaro Highway) will be undertaken. Formation width will be 8 metres, sealed to 6.2 I metres wide. Material from the proposed quarry will be transported by I truck along Monaro Highway, Kosciusko Road and Snowy Mountains Highway. The principal points of demand for this material will be within the Coana-Monaro Shire and Snowy River Shire. Minor demand may require haulage outside these I shires. The projected traffic along the Monaro Highway based on the I minimum yearly excavation of 48,000 tonnes is 124 trucks per week (1 truck/27 mins). The maximum capacity of the mobile crushing plant is 1800 cubic metres (4320 tonnes) per week. I Projected traffic along the Monaro Highway at peak capacity would be 576 trucks per week (1 truck/6mins). These loaded trucks would travel from the quarry to the various locations of demand. Unladen trucks would return to the quarry along I the same route as the outward journey. Traffic calculations include the return journey. I The haulage rates are based on trucks carrying approximately 15 tonnes of material. Trucks with dual rear-axle and a I gross laden weight of approximately 21 tonnes are envisaged. The concept for delivery of railway ballast to the vr Project includes using existing or temporary railway facilites for transport to the construction face. The I proximity of the proposed quarry to the existing Goulburn-Bombala railway presents an opportunity to utilise this for transport of material therefore minimising the I impact of using Monaro Highway as a vehicular haulage route. 7. KItIkILL 3.6 Visual Concept Quarrying will start on the south-western side of the rocky knoll and progressively remove material, retaining undisturbed faces, visible from MDnaro Highway, until such time as portions of the undisturbed faces becane quarried, as shown on Figure 3. 3.7 Final Form of Quarry The site will be restored to grazing land afer quarrying. This will involve grading to gentle slopes, restoration of topsoil and planting of pasture grasses. 3.8 Hours of Operation Hours of operation will be 7 am to 5 pm on weekdays and 7 am to 12 pm Saturday, normally. Should danand for the hard rock product increase than the hours of operation may increase to 4.30am to 11.30pm seven days per week. Haulage operations would occur within the 7am to 5pm weekdays or 7am to 12pm Saturday, when haulage routes adjoin residential areas. I(ItlIIILL I KItIIULI I 4. CONSIDERATION OF ALTERWTIVES I As stated in Section 3.1, the aim of the proposed quarry is to supply hard rock product to the Monaro district and railway ballast to the VFT Project, Coana section. I Alternative sites which could possibly achieve this aim are identified and evaluated in this section. In addition alternatives to grazing as a proposed after-use are I considered. The proposed quarry site is owned by Mr R. Snowden. The site was purchased with the quarry as a pre-existing use under the I Environmental Planning and Assesirent Act (1979). I 4.1 Alternative Sites The tertiary basalt material found at the proposed quarry site extends as a flow over the Monaro Plain. Generally its I extent could be described as * 22 kilometres wide, 9 kilanetres south of Coorna * Nirnmitabel I * Bibbenluke and I * 9 kilometres east of Dalgety. There are therefore many potential sites with this type of material in the Monaro district. In this context, the major I criteria determining the suitability of the site is distance from demand points, access infrastructure, and use of site I and surrounding areas. 4.1.1 Use of Sites and Surrounding Areas The Monaro Plain is uniformly rural except for the Rock Flat area which has a history of extractive industry. Surrounding users to Rock Flat may exhibit a degree of tolerance to extractive industry. Introduction of extractive industry into other areas of the Monaro Plain may impact adversely on surrounding users. 4.1.2 Access Infrastructure Access within the Monaro Plain is restricted to gravel shire roads, the sealed Cocma-Dalgety Road, Main Road 394 which links Berridale to Dalgety and connects with the Monaro Highway north of Bombala, Monaro Highway Cocma-Nimmitabel-Banbala. The disused Goulburn-Bombala railway runs roughly north-south f ran Cooma to Bombala. The proposed quarry site has the advantages that it is adjacent to and able to utilise both the Monaro Highway, the principal road within the Monaro district, and the Goulburn-Bornbala railway. 9. I I KIP1ULI Sites adjacent to both exist within proximity of Nirriritabel. Development of these sites would incur loss of amenity to the I Nirrinitabel township. I 4.1.3 Distance fran Dmiand Points Sites further south from the proposed quarry would be economically disadvantaged by the Bunyan area pits for supply I to demand points west of Cooma. The transfer of, impact by haulage routes, within Cooma, and the removal of the impact of south travelling haulage vehicles would not occur. I Sites further south from the proposed quarry would have an economical advantage over the proposed quarry for supply to demand points south of Cooma. Any site south of Cooma would I have an economic advantage over the existing Bunyan area pits therefore for supply to points of demand south of Cooma alternative sites are economically neutral. I The Nimmitabel sites adjacent to the Goulburn-Bomballa railway would be disadvantaged by the requirement for upgrading (rebuilding) an additional 15 kilometres of track, I to supply railway ballast to the VFI1 Project, Cooma Section. I 4.1.4. Caiparison of Alternatives Those locations within the Monaro district have advantages and disadvantages when car?ared with the proposed site. None of the advantages is sufficiently significant for an I alternative to be favoured in place of the subject site. The latter is therefore preferred because: I * the division of the hard rock product market iiripacts favourably upon residential amenity in Cooma. * Use of the site has been secured by purchase. * Its pastoral value will be increased by the quarry I operation * It provides a significant source of material. I * Alternative sites do not compare favourably with this location in terms of all the above factors. I 4.2 Alternative Forms of the Site after Quarrying The proposed final form of the quarry presents little opportunity for alternatives. The removal of the rocky knoll I will result in a flat low rise (see Figure 4). The decreasing of slopes over the site produces an increment increase in the agricultural land capability and a decrease in erosion potential. The restoration to grazing land is the I only alternative. I 10. Legend 5AA SECTION A - A Figure 4 - , C- / ,• - I, AJ- 80fvf8AL.A TYPICAL SECTIONS 5QUNLAQY FENC6 MOA/A EQ I-I/Cl-/A/A METRES vertical (SED /ME o io 20 30 140 50 60 POAJD METRES horizontal 0Q00 200 ROCK FLAT QUARRY ENVIRONMENTAL IMPACT SECTION B - B STATEM ENT COOMA-MONARO SHIRE KIIIIULL rnffiu 4.3 Conclusion Although there may be alternative sites for the quarry which would be as feasible as the proposed location, none of them were found to be significantly better in terms of the relevant location criteria. The proposed site has the advantages of being owned by Mr R. Snowden. Its location provides a good balance between distance to points of demand for hard rock product and impacts favourably upon residential anenity in Cooma. For these reasons, the proposed site canpares favourably with alternative sites. Alternative forms of the site after quarrying were also considered. The preferred alternative is restoration to grazing land. This alternative can be readily implemented, causes minimal visual impact, and incurs benefit. 11. : I:ekt IS h .TA I I' :k: I Ii 5. DESCRIPTION OF EXISTI The Environmental Planning and Assessment Regulation 1980 requires a relevant description of the existing environment. In this section, those aspects of the existing environment are described which provide a context to the proposed develoent or which are likely to be affected by the proposed works. 5.1 Regional Context The site is located within the Monaro Plain on Monaro Highway approximately 14 kilometres south of Cooma, at Rock Flat. It is situated in the local government area of Cocxna-Monaro Shire Council. 5.2 1ography &nall lakes, flat topped basaltic caps and extensive treeless plains are characteristics of the Monaro Plain. The quarry site occupies part of the side slopes of the Spring Creek valley and varies in elevation from 910 metres All]) to 940 metres ARE). The site is a rocky knoll with evidence of past surface mining and quarrying along benches. These benches occur on the southern side of the knoll at the 920 metres AU]) and 930 metres All]) contours. Bench heights vary between one metre and five metres high. The rocky knoll rises at slopes of one in eight to reach an elevation of 940 metres ARID. The surrounding area consists of undulating hills rising to 1030 metres Ni]). These hills connect to low ridge lines which run roughly north-south parallel to Spring Creek and Rock Flat Creek. The Spring Creek Valley passes the site at 890 metres MiD to 880 metres All]). Spring Creek and Rock Flat Creek converge downstream of the proposed quarry site. A drainage line runs from the quarry site in a south easterly direction to join Spring Creek. Three darns have been constructed by the owner along this drainage line. One dam is situated above the Goulburn-Bombala railway and the other two are situated between the railway line and Spring Creek. 5.3 Soils Extensive basalt flows of the tertiary period overlay the sedimentary rocks of earlier periods to the south of Cocna. These flows have formed the dry-tussock grasslands of the I Monaro Plain. Soils characteristic of the site are Prarie Soils, Plastic Clays and Black Earths. These soils are all relatively fertile, but whereas the prairie soil and plastic I clays do not present significant erosion problems, the black earths are quite erodible. The proposed quarry site has thin (less than 10cm deep.) prairie soils overlaying the parent basalt. Plastic clays and black earths exist over the I remainder of the proponent site. 12. I KIlIkILL 5.4 Hydrology The site is situated within the extreme downstream catchment ofSpring Creek and partially within the catchment of Rock Flat Creek. Upstream of the site, the area of catchment is approximately 1940 hectares; the catchment of Rock Flat Creek is approximately 6075 hectares. The head waters (top) of the catchment of Spring Creek are about 9.5 kilometres south-east of the site and rise to elevations of about 1130 metres MID. I The head waters (top) of the catchment of Rock Flat Creek are about 11 kilometres south of the site and rise to elevations of about 1100 metres AT-ID. These levels are 220 metres and I 190 metres higher than those on the site. There is no possibility of flood discharges along Spring I Creek and Rock Flat Creek encroaching upon the site. 5.5 Vegetation I The dry-tussock grasslands of the Mnaro Plain is the dominant vegetation caonent of the region with open savannah woodland on some ridges. Exotic tree species I (particularly Pines) have been used as wind breaks around the hanesteads in the area. The site has been cleared and canprises improved grassland I which is currently used for grazing sheep. The ridge immediately to the west of the site, Dangelong I (1035 metres MID), and the ridge on the eastern side of Rock Flat Creek has open savannah woodland on its top slopes. I These open savannah woodlands are typical of the original vegetation cover and are generally in poor condition, suffering from dieback. The Spring Creek valley and Rock Flat valley adjoining the site have been cleared and comprise improved grassland which is currently used for grazing sheep. 5.6 Goulburn-Bcinbala Railway The Goulburn-Bombala railway line enters the site from the I north-western corner and exits at the south-western corner. The railway reserve divides the site into the western canponent which includes the proposed quarry site and the I eastern component which is used for grazing purposes. The railway hasn't been used for three years and was I targetted for closure by the previous Labor State Government. The railway's future at this time is uncertain. The WI' Project has identified the railway as an option for I transporting railway ballast. 13. i I I KIIAIMLL I 5.7 Land Use I The dcminant land use of the area is rural with grazing of sheep the dominant activity. Land use around the site has a I history of extractive industry. An abandoned clay pit, which was vrked to supply raw material to the Cooma Brickworks, is situated over the property boundary of Portion 87 (the proponent site) and I Portion 61, County of Beresford, Parish of Gladstone. An abandoned silicate mine is situated on the slopes to Rock Flat Creek, opposite the proposed quarry (on Part Portion 49, County of Beresford, Parish of Dangelong). An abandoned gravel pit is situated on the western slopes of Dangelong ridge adjacent to the "Kaludah" road, (Portion 115, County of Beresford, Parish of Dangelong). - The proposed quarry site is within 0.5 kilometres of the abandoned clay pit, 1.0 kilometres of the abandoned silicate I mine and 3.0 kilometres of the abandoned gravel pit. A mineral springs bottling operation exists at Rock Flat adjacent to the site. Past operation occured during 1984 and I 1985. 5.8 Zoning — The planning instrument controlling development on the site is the 'bnaro Planning Scheme Ordinance as amended in January ' 1982 (current to Local Environment Plan No 1). The zoning of this instrument is Rural lB and Rural 1A. Rural lB extends in a strip 400 metres from the Monaro Highway. Quarrying is a permissable activity requiring the consent of I the Shire Council in Rural 1A and Rural lB zonings. Mining lease No 293 occurs upon Part Portion 49 County of Beresford, Parish of Dangelong which adjoins the site. The railway reserve for the Goulburn-Bathala railway bisects I the site. The defunct Crown Village of Rock Flat straddles both MDnaro Highway and Rock Flat Creek adjacent to the site. 5.9 Planning Proposals Alignment options being considered by the WI' Project include the ridge between Cooma Creek and Spring Creek approximately three kilometres to the west of the site and the Rock Flat Creek valley. These alignment options are subject to further I terrain analysis before adoption of a preferred alignment. 14. I w iffi U I 5.10 Water Quality I Water quality within Spring Creek and Rock Flat Creek may not be suitable for drinking purposes due to sheep and cattle faecal pollution. The length of both creeks is open to stock. The extent of faecal pollution depends upon the creek I flows and the season. During summer both Spring Creek and Rock Flat Creek may I exceed the recamiended water quality specification for drinking purposes, despite the fact that it is clean looking water. I Water quality rrntoring was undertaken by the Coana-Monaro Shire 's Health Officer during the operation of the Mineral I Springs bottling plant in 1984 and 1985. One sample during this period included radiation levels which I were marginally above the Health Department requirements. There have been no requests for water quality testing since. U 5.11 Users of and Dnand for Hard Rock Product Users of any substantial quantities of Hard Rock Product within the Monaro District include: Department of Main Roads of New South Wales Snowy River Shire Council I CoaTla-MDnaro Shire Council and in the near future ' Very Fast Train Project, Cooma Section Department of Main Roads (DMR) uses hard rock product in heavy patching and reconstruction of the following roads: I Snowy Mountains Highway (State Highway No 4) Snowy River Shire boundary north of Kiandra to Coonia and, Bombala turnoff I to Bega Valley Shire boundary. Kosciusko Road (Main Road 286) Inside the Kosciusko National Park. I The Alpine Way (T.R. 4043) Material supply and construction. MDnaro Highway (State Highway No 19) A.C.T. border to I Banbala Shire boundary. DMR's average yearly demand is 40,000 cubic iietres and in the following couple of years the majority of DMR's work will be on Monaro Highway between Coana and the ACT border. Snowy River Shire Council (SRSC) used hard rock product for I heavy patching , reconstruction and maintenance on the following roads: I Kosciusko Road (Main Road 286) Kosciusko National Park boundary to Snowy Mountains Highway at Fourmile. 15. I I I Kft4kRI The Alpine Way (T.R. 4034), Maintenance only. I All other roads within the shire boundaries except those under DMR responsibility. I SRSC's average yearly demand is 2000 to 3000 cubic metres for heavy patching and maintenance. An extraordinary demand of 8000 cubic metres per year over the next two to three years I will be utilised in the SRSCt s reconstruction program. Coana-Monaro Shire Council (CMSC) uses hard rock product in heavy patching, reconstruction and maintenance on all roads within the Shire boundaries except those under DMR responsibility. CMSC's average yearly demand is 2000 to 3000 cubic metres. The Very Fast Train (VFT) Project, Coana Section will require 1.8 million tonnes of railway ballast (approximately 750,000 cubic metres) for construction over a five year period commencing 1992/1993. DMR suspends roadworks during the ski season (long weekend in June to long weekend in October). Demand for hard rock product during this period is only for supply as necessary to the Shire Councils. 5.12 Sources of Hard Rock Product The current Snowy River Shire planning instrument is Local I Environment Plan No 4. Under its provisions, extractive industry is a prohibited use. L.E.P. No 4. is currently being amrnended to allow extractive industry within zonings I Rural 1A and Rural lB with the consent of the Council. Hard rock quarrying is now conducted at Deerson 'S Pit and Saddle Pit which are adjacent to the Alpine Way near the Kosciusko National Park boundary. Tunnel spoil is crushed for sealing aggregate at Eucurribene by Diverse Developments. Discussions occured with SRSC previously regarding extractive l industry at "Hazeldean", 15 kilanetres south of Coana along the Dalgety road. Heritage restrictions procluded any further discussions. I At present no approved hard rock quarries exist within SRSC and no hard rock quarries exist as a pre-existing use under the Environmental Planning and Assessment Act (1979). Saddle I Pit is within the road reserve of the Alpine Way. SRSC gains its hard rock product from various pits within the shire which are very small in nature and Deerson's Pit. Coana-Monaro Shire Council gains its hard rock product from two pits at Bunyan 12 kilometres north of Coorna along Monaro I Highway. 16. u I WI'AULI i Department of Main Roads of New South Wales gains its hard I rock product from Saddle Pit, Bunyan Pit (adjacent to CMSC's pit) and, in the past, from Rock Flat (the proponent site). I DMR, SRSC and CMSC all exploit the nearest source of supply of hard rock product due to the substantial cost of transport. I DMR Coana engineer Mr David Wilson would be "pleased to see a pit available at Rock Flat" due to the reduction in transport costs associated with works along MDnaro Highway I and Snowy Mountains Highway south of Rock Flat. DMR, SRSC and CMSC use the mobile crushing plant of Diverse I Develonents to process the raw material. The mobile crushing plant has a capaciy of 800 cubic metres per shift. Two shifts per day are possible with the operations starting at 4.30 am to finish at 11.30 pm. Maximum daily output is I 1600 cubic metres of hard rock product. 1 17. I A I 'I- I I.kL I Fl I 1 KIP1ULL 6. ,$1 -:IUFO i) $IS Vl In this chapter, an assessment is made of the potential impact of the proposed quarry on the environment. In any development, some matters are more important than others. Section 6.1 provides an overview which identifies the key issues. 6.1 Issue Overview Key issues include: Visual Inpact Since quarries involve substantial excavation, visual impact is a key issue. Soil Erosion The proposed site is situated adjacent to Spring Creek and Rock Flat Creek. The possibility of soil erosion resulting from construction activities is therefore a key issue. C) Water ciantity and Quality There is a possibility of an increase in turbidity and of siltation of the creek if local runoff or upstream flows are allowed to cross the working areas and stockpiles. Water quality is therefore a key issue. truck ?tvnts A significant number of trucks will be required to haul the material from the quarry. The introduction of Rock Flat quarry will further divide the rock product market. The division of the market place will lead to transfer of impact around the residential streets of Ccxnma and the diminution of impact in some aspects. This beneficial impact is considered to be a key issue. Noise and Dust Quarrying operations and truck movements will generate noise and dust, the impact of which is regarded as a key issue. Other issues include flora and fauna, heritage and archaeology, energy consumption and rail movements. 6..2 Visual Impact Assessment The visual context of the site is shown in Figure 5. The site is currently visible from the following points: 18. \ :TO 0004-IA Legend /ND/V/OtJA t R6S/DEA/C6J O ,V/T/-/ V/6/V5' OF 7)'IE JITE X/ST/NO rees' C/2 I PR/A/C/PA L ,€'/OCgS PU5L1C d€'OAOS /'viri-i Y/6I4/S OF 7W6 S/76 llp kIL O,v/er1E'c MA eKe.€ (x-/1-01We7-,E'6s reohl \ COOi-1A) \ a 1eoci<__.•: 'ç FLA QUA2i I :-: /b* V:'" Figure 5 * VISUAL CONTEXT a s.a. KILOMETRES * 0 05 10 15 * I ROCK FLAT QUARRY ) C ENVIRONMENTAL IMPACT STATEMENT I I\ ( COOMA-MONARO SHIRE 'TYA/EDALt I M/vf4f/T48EL KIIdII1LL ) ••9 \ oEeA:•:•.•. 1 KUkffiILL Monaro Highway - Travelling South to Nirrtnitabel The Monaro Highway alignment directs drivers views directly at the northern slopes of the quarry site from 13 kilometres from Cooma to 14 kilometres from Cooma. Viewing distance closes from 1000 metres to 100 metres, and is continuous. Views of the quarry site from 14 kilometres south of Cooma to 18 kilometres south of Cooma are at 900 or greater to the alignment of Monaro Highway. Viewing distance increases from 100 metres to 3000 metres, and is intermittent. Monaro Highway - Travelling North to Coana The upper elevations of the quarry site are visible as a long distance view from Monaro Highway, 19 kilometres I south of Cooma, opposite "Tynedale" homestead gates. The highway alignment directs views directly towards the quarry site. Land form in the middle distance I obstructs views of the lower elevations. Views of the quarry site from 18 kilometres south of Cooma to 14 kilometres south of Cooma are generally at 300 or less to the Monaro Highway. Viewing distance closes from 3000 metres to 100 metres. Views are obstructed minimally by road cuttings at 17 kilonetres and 16 kilometres from Cooma. C) "Tynedale" Ikitestead The upper elevations of the quarry site are visible from "Tynedale" homestead. The view distance is 4000 metres and land form in the middle distance obstructs views of the lower elevations. d) Rock Flat Road and Kaludah Road Alignments of Rock Flat Road and Kaludah Road direct road users views directly at the quarry site. Views from Rock Flat road are at a distance of 1000 metres to 500 metres from the quarry site for 2 kilometres of the road. Views from Kaludah road close from 3500 metres to 1000 metres for the length of the road from Dangelong Ridge to Monaro Highway. The quarry site is only visible whilst travelling towards the Monaro Highway along these roads. 19. I I KUIIIULL e) Surrounding Rural Properties The quarry site is visible from the surrounding rural properties of "Rock Flat", "Milton Park", "Kaludah" "Tynedale", "Manaroo", the occupied shed on the Mining I Lease adjacent to the proponent property and "Hi-Hope" - (the proponents property). f) Goulburn-Barbala Railway ' The Goulburn-Bcmbala railway runs indiately adjacent to the quarry site. At present services are suspended but should services be renewed views of the site from ' 20 metres and less would occur from passing trains. 6.3 Soil Erosion An increase in soil erosion is not anticipated for the I following reasons: ' * Sediment traps will be installed at the downstream end of the site. The downstream banks of these traps will be protected. * The prairie soil overburden will be stripped and I stockpiled for re-vegetation works to prevent erosion into the quarry area. I 6.4 Water Quantity and Quality ' The proposed quarry will not have a substantial impact on the quantity of runoff from Spring Creek. The area of the Spring Creek catchment above the proposed quarry site is about 1940 hectares. The quarry covers only 9 hectares (about one half of one percent of the total catchment area). The runoff I (water quantity) at the subject site will remain dominated by the nmich larger Spring Creek catchment, so that the impact of the quarry on water quantity will be negligible. I The proposed quarry would adversely affect water quality downsteam from the site if local runoff or upstream flows are allowed to cross the working areas and stockpiles in an I uncontrolled manner. Without mitigating measures, an increase in turbidity and siltation of the channels could be expected. These potential impacts could be minimised by the adoption of a suitable sediment control strategy. A detailed I strategy for mitigating the impact of the proposed quarry is described in Chapter 8. No groundwater reserves will be I affected by the quarrying operations. 6.5 Truck Movements I Distance, and the incurred transport costs, is the principal economic determiner influencing choice of supply source for hard rock product within the Monaro district. I 20. P L RIlIIULL I The existing marketplace has two principal sources of supply of hard rock product. These sources are the Saddle and I Deerson pits and the Bunyan area pits. Distance from these pit areas to the point of use within the Monaro district will dictate where one has an economic advantage over the other. I See Figure No. 6. Saddle and Deerson pits have an economic advantage over the l Bunyan Area pits along the following roads: * Alpine way * Barry Way I * Kosciusko Road (Charlottes Pass to Berridale) * T.R. 4040 * Rocky Plains Road I * All Snowy River Shire roads West of Berridale Bunyan area pits have an economic advantage over the Saddle and Deerson pits along the following roads: * Kosciusko Road (East of Berridale) * Snowy Mountains Highway (Snowy River Shire boundary north of Kiandra to Cooma and, Bombala turnoff to Bega Valley Shire boundary) * Monaro Highway * All Snowy River Shire and Cooma-Monaro roads east of Berridale. Since M.R. 583 and M.R. 394 are equidistant from both pit areas, no economic advantage exists. Bunyan area pits haulage routes to: * Snowy Mountains Highway (West of Cooma), * Kosciusko Road (Fourrnile to Berridale), * M.R. 583 and M.R. 394, * Shire roads between Cooma and Berridale, travel through Sharp Street, Cooma. Bunyan Area pits haulage routes to * Monaro Highway (South of Cooma), * Snowy Mountains Highway (Bonibala turnoff to Bega Valley Shire boundary), * Shire roads south of Cooma, travel through either, * Sharp Street, Bcnibala Street, Church Road, Cooma or * Polo Flat Road, Monaro Highway. The implication of the entrance of Rock Flat into the Monaro district hard rock supply marketplace is that the Saddle and Deerson pits maintain their market share and the market share previously enjoyed exclusively by the Bunyan area pits is divided between the Bunyan area pits and Rock Flat. See Figure 7. 21. a...... 0 U U U U U U U U 6'A1V5EeEAa...... Legend 40 ... ro c fw 3 YDA1,5 Y a k I U 0000000 SADDL6 PIT e a DE8é'S01VS PIT Q. U U MA1ekET SwAe6 •••uaa 5U1VYAAl AiE'EA PITS T,. MAE'k26T 5/-/A26 a U U COMMOAJ MA P;6T V - 1, U I€' DI4 U Uln a BU,V VA Al AIeEA Pir..s U / 1 a L \-' I I ( J o'Wa 'L if 0 ..::H• (S/i'4) C00M4 0 . U a 71 a V U To/-I4ICOSoIsJ ,-dobyr7e , , FLA 7 A 4,3 ueY Sk'O 8EP.DA LE ock a ME1-5 0(12//El QS C1 H a . UA1E' Figure 6 . ; i.. EXISTING DIVISION OF DALCT?. : HARD ROCK PRODUCT MARKET KftDMETRES I 0 10 20 30 P çz. 0 1 00 s o00 . ROCK FLAT QUARRY ENVIRONMENTAL IMPACT a STATEM ENT IM U U COOMA-MONARO SHIRE a TO U MEL iS OUQAJE 0,0 00000000 SOM8A L A KHIkILL 000 000000000000000000DD• ....aa.UUU .UUUU..U.a.a...a•..U.. • I Legend 0000000 JAD05 PIT i DEEi€SOA15' PIT k MAeAET cSWA26 U..... 8oiV'AiV ,4eeA P17-S MA2/cET L5/-/A1e6 •••••••• 2OCI FLAT QUARRY ,('lA 26T CSWA E6 COMA/fON MA 2k6T BUN VAAJ L.5'1?#'.l AIeEA PITS' 0 ::• . i 'Fl • o .: :•.: ::.. . .:::::: :.: .. : (j','4). ,(_,I_,ILq#I ...... s..s....s._.ss....j 00 : 00!J \ ...... (AT1O14M2 \ : 1' L C P :.:..:.::::..:.:. \ To 'AAJCU8AJ.' ci (jt : AUE'Y a dcbyt'e° 8E,DALE..:: FLA T M6L5OJENE/ C.7 (OSC . :: 2 UA ,Qde ,' : C ...... : ••.:: .••:•••.• 1 ' ...... :.:.• 1 C-i 0 ::•. • Figure 7 05 O 0 .:• : .a ..:.:... . DIVISION OF HARD ROCK .4LCe7r • L . A S PRODUCT MARKET 0 7IICji'l INCLUDING ROCK FLAT 0 0 QUARRY 0 0 P 0 0 00 L KILOMETRES 30 PAR.K 0 10 20 pfp %•. tx 09 ROCK FLAT QUARRY ENVIRONMENTAL IMPACT STATEM ENT COOMA-MONARO SHIRE TO MEL 0(-1Q/E I 0000000 0O.,J0/V75ALA 0 \ 0000000000000 ..J KIIIkILL I UtqffiRIL Bunyan area pits have an economic advantage over Rock Flat I along all roads north of Cooma. Rock Flat has an economic advantage over Bunyan area pits along all roads south of Cooma. I Neither Bunyan area pits nor Rock Flat have an economic advantage along the following roads: I * Snowy rbuntains Highway (Cooma to Snowy River Shire boundary north of Kiandra) * Kosciusko Road (Fourmile to Berridale) I * M.R. 583 and M.R. 394 * Shire roads between Cooma and Berridale Main Roads 583 and 394 are equidistant from all three pits, therefore no cost advantage exists between the hard rock product sources. The demand for hard rock product along: * Snowy Mzuntains Highway (Cooma to Snowy River Shire boundary north of Kiandra), * Kosciusko Road (Fourrnile to Berridale), * M.R. 583 and M.R. 394, * Shire roads between Cooma and Berridale, will still arise and the quantity of demand is constant whether two pits are supplying the demand or one. The level of heavy traffic through Cooma will not change no matter whether two pits are supplying the demand or one. The impact of truck movements will be transferred within Coana depending on which quarry is supplying the demand. The impact along Sharp Street west of Centennial Park will remain and not change due to choice of pit as it is a conron haulage route. Exclusive supply by Bunyan area pits to areas west of Cooma restricts the impact to the length of Sharp Street. Exclusive supply by Rock Flat transfers the impact from Sharp Street north of Centennial park to Bombala Street East of Centennial Park. The transfer of economic advantage from Bunyan area pits to Rock Flat for areas south of Cooma has the benefit of renoving the traffic impact of haulage routes south through the town. The haulage route options south through the town are: * Sharp Street, Banbala Street, Church Road to Dalgety or * Polo Flat Road, Mcnaro Highway to Nirrimitabel. The argument that, the introduction of Rock Flat into the Mnaro District hard rock supply market will transfer some I impacts around streets within Cooma and eliminate the impact of haulage routes through the town to points south, is based on the following assumptions: I 22. I I KItgkuLL L * Free unconstrained market * Choice of source of supply based on the objective of I minimising transport costs. Bunyan area pits and Rock Flat produce uniformly characteristic products. Inspection of haulage routes indicated that, although road I pavements are generally in good condition, some failure is evident. Testing of the flexible pavements has not been undertaken as I part of this study. The gross weight envisaged for laden trucks (21 tonnes) is substantially below the legal local load limit. 6.6 Noise and Dust Potential noise and dust impacts will result from quarrying I itself and from the haulage of material by truck. The latter has been discussed in the previous section. The generation of dust at the quarry will not be significant, because I explosives will not be used. Truck tyres, however, may carry mud onto Monaro Highway in the vicinity of the quarry if site conditions are wet. Equipment and operations will be in I accordance with the noise and air quality guidelines of the State Pollution Control Connission. 6.7 Rail t.!bvennts Haulage of railway ballast from the quarry to the VFT Project may be via the existing Goulburn-Bombala railway or other temporary railway line purpose built. The noise impact of this railway movement upon the amenity of adjacent users is considered to be an issue although I mitigated by its rural context. The risk to livestock of railway operations is also an issue to be considered. The I railway reserve is not fenced. 6.8 Energy Consumption The extraction, processing, and transport of fill material will be undertaken by diesel-powered equiçaiient (rippers, crushers, loaders and trucks), and the entire operational life of the quarry is anticipated to require approximately I 1,000,000 to 1,200,00 litres of distillate. Electricity will be required to provide lighting and heating I of offices, washroans and other facilties, but this demand is not expected to exceed the normal requirement of two domestic dwellings. Diesel-powered equipment provides the necessary reliability and flexibility of operation, and alternative I energy sources were considered to be impractical. 23. I KIUIIULL i 6.9 Other Issues Other issues are dealt with briefly in this section. They include: I a) Flora and Fauna The land for the proposed quarry is grazed dry-tussock I grassland and improve pasture. There are no unique or endangered flora and fauna species remaining on the site. In these areas native fauna tends to be suppressed by the carrying out of grazing activities. I Rabbits inhabit this grassland. I b) Heritage and Archaeology There are no known heritage items or aboriginal relics I on the proposed site. C) Land Use The land is presently used for grazing sheep. This is I a productive econanic activity which could continue after the proposed site has been quarried. The quarrying of the land will be a more efficient use of I the land. The resultant land form after quarrying will improve the land capability of the site. The proposed quarry will have sane impact on the users I of surrounding land, but this will not be significant within a rural context. 24. 1 FrAI I L1.I I ag(.dIf SjI F's)Ilj 7. , tAl 4113 Z!I4 0. 7.1 Justification of the Proposal The merits of the Bock Flat site may be summarised as follows: * Significant reserves of hard rock material. * Proximity to a road of high standard. * Proximity to a railway requiring upgrading. * Owned by the proponent. * Extensively mined and of little agricultural value. * Rural location some distance from residential areas. * No known ecological or heritage significance. * Beneficial impacts on Cooma residential amenity. * Restoration after quarrying will improve the agriculture value. No alternative site appears to offer a comparable combination of advantages. Thus, the subject site is regarded as the optimum location. The final form and subsequent use of the quarry site are justified on several grounds. Firstly, restoration to grazing will return the site to its existing use, with a greater agricultural capacity. Secondly, the finished profile can be achieved by conventional earthmoving methods, and will provide stable and accessible slopes. Thirdly, the form will not preclude redevelopment of the site for alternative uses should the demand arise. 7.2 Consequences of Not Undertaking Deve1citnt Failure to proceed with quarrying on the subject site would incur a number of costs and benefits within its iirinediate vicinity. Visual, acoustic and air quality impacts upon Coana residences would not be mitigated. The potentially undesirable effect both upon users of Mnaro Highway and upon the condition of the road pavement would not occur. Conversely, the opportunity to reopen a quarry site to productive use would not be realised. Use of alternative sites would be likely to generate substantial impacts. If no site in the locality was considered to be acceptable for quarrying, the existing quarry form would remain as a visual impact on Mcnaro Highway users and a valuable resource I would be locked up. I 25. U I UI1kRL I I I I 8. I-1ITIGATING MEASURES In Chapter 6, the following impacts of the proposed works re considered to be significant: * Visual impacts, particularly during construction. * Soil Erosion. * Water Quality. * Truck movements, especially as a source of noise and dust. * Rail movements, expecially as a source of noise and dust. Measures will be taken to reduce these and more minor impacts to ensure that the proposed works are carried out in an environmentally acceptable manner. The following subsections describe these measures. 8.1 Visual Inpact A visual impact buffer will be provided for the duration of construction along the Monaro, Highway frontage of the site as shown in Figure 3. This would be achieved by siting and staging of extraction and would intercept most potentially sensitive views from MDnaro Highway to the north and south as shown in Figure 3. 8.2 Soil Erosion and Water Quality The following sediment control strategy will be adopted to minimise adverse impacts on soil erosion and water quality: * Upstream flows will be diverted around the quarry area. * Sediment traps will control flow across the quarry site. * Construction will commence at the south-western end working towards the northern end of the quarry. * The extent of working areas will be minimiseci. * Areas not being worked will be revegetated. Sane of these elements are expanded in the following subsections. 8.2.1 Diversion of Flows Around the Quarry Area The area of the Spring Creek catchment directly above the quarry site is 6 hectares. Flows upstream of the quarry will be diverted around the site into the existing drainage line as shown in Figure 3. These I flows do not require treatment, but they will pass through the sites' sediment traps. Water from the quarry would require treatment and will pass through sediment traps before entering Spring Creek. I 26. i RH1ULL 8.2.2 Sediient Thaps A sediment pond will be installed below the downstream end of the extraction area, within the drainage line to the south. - The total volume of the sediment pond will be 2700 cubic metres which has been calculated on the basis of 300 cubic metres storage per hectare of disturbed area. This volume is 2.5 times greater than that reccirrnended by the Soil I Conservation Service. The pond (sediment trap) will be trapezoidal in shape with a I depth of 1.5 metres. An embankment will surround the sediment trap. At the downstream end, this embankment will be protected to prevent damage by overtopping. The pond will I be drained by an outlet pipe discharging into the downstream channel. Flow into the drainage pipes will be controlled by a I perforated vertical riser pipe wrapped in filter fabric. The vertical riser will allow the gradual release of water from the sediment trap, providing time for sediment to settle in I the ponds. 8.2.3 Extraction of Material I Extraction of material will commence at the south-western end of the proposed quarry site, and will progress gradually northwards. The sediment traps will be installed first so I that run-off from working areas passes through them. Some site grading may be required to facilitate drainage from the work areas into the silt traps. I 8.2.4 Protection of Cut Faces Once the required material has been renved, cut slopes will I remain along the western boundary of the extraction area. This slope could be subject to minimal erosion. I Erosion will be mitigated by removal of prairie soil overburden from slopes within the proponent site draining into the quarry area. I 8.3 Truck t'bveints The following measures will be taken to minimise the impact I of trucks hauling material along local roads: * Thucks will operate only between 7 am and 5 pm on weekdays and 7 am to 12 pm on Saturdays, when haulage I routes adjoin residential areas. * Trucks will be maintained and checked to ensure that silencers are operating effectively. I * The weights of loads will be controlled so that damage to road surfaces is minimised. 27. Some damage to road pavements along the haulage routes is anticipated. The precise location and frequently of pavement failure, however, is not easy to predict. This is because of variations in local rainfall (which will affect saturation and weakening of the pavement) and intennittent operation of the quarry (dictated by demand for hard rock product). In order to identify and rectify possible damage, road pavements will be inspected by the quarry owner and Coana-?bnaro Shire Council engineers both before and after each period of quarry operation. 8.4 Dust The following measures will be applied to minimise the generation of dust: * Covering of truck loads. * Spraying of water on to cut faces and access roads within the quarry site if necessary. 8.5 Archaeology If any aboriginal relics are uncovered during excavation, the National Parks and Wildlife Service will be contacted imnediately. 8.6 Rail MDvEnts Given that the utilisation of this quarry for the supply of railway ballast to the VF'r Project is subject to further decision, the instigation of mitigating measures for railway rrovement impact is not a priority. 28. .I1U1.i II! Departrrnt of Environment and Planning (1983) Kosciusko Regional Environmental Study (Snowy River). Bright, B (1988) Personal conversation with Mr B. Bright, Shire Engineer, Snowy River Shire Council. Bryant, M. (1988) Personal conversation with Mr M. Bryant, Shire Engineer, Cooma MDnaro Shire Council. Corby, B. (1988) Personal conversation with Mr B. Corby, Divisional Engineers Office, Goulburn, State Pail Authority. Cuxnmins, P. (1988) Personal conversation with Mr P. Cummins, Divisional Engineers Office, Goulburn, State Rail Authority. Dakin, B. (1988) Personal conversation with Mr R. Dakin, Town Planner, Cooma-Monaro Shire Council. Feary, S. (1988) Personal conversation with Ms S. Feary, National Parks and Wildlife Service, Queanbeyan. McKenzie, T. (1988) Personal Conversation with Mr T. McKenzie, Health Officer, Cooma-Monaro Shire Council. Nicholson, A.J. (1988) Personal conversation with Dr A.J. Nicholson, Very Fast Train Project. Thil, K. (1988) Personal conversation with Mr K. Tull, Town Planner, Snowy River Shire Council. Wilson, D. (1988) Personal conversation with Mr D. Wilson. Department of Main Roads, Cooma. Lai;k:Li!U P2PENDIX A SSj . w &e Piii I New South Wales Government Department of Planning r Remington Centre - 175 Liverpool Street, Sthey 2 00 Kinhill Engineers Pty. Ltd, Box 3927 G.P.O. Syiñey 2001 Canberra Region, DX. 15Sydney P.O. Box 246, KIPPAX. A.C.T. 2615 Telephone: (02) 266 7111 Ext. 7490 Fax No: (02) 266 7599 Contact: J. LLEWELLYN Our reference: 88/1587 J Your reference: 88/500 5 Dear Sir, 13 JUL. 1988 PROPOSED HARD ROCK QUARRY AT ROCK FLAT Thank you for your letter of 28 June 1988 indicating that you are consulting with the Director with regard to the preparation of an environmental impact statement (EIS) for the above development. As development consent is required for the proposal and it is a designated development within the meaning of Schedule 3 of the Environmental Planning and Assessment Regulation, 1980, as amended, an EIS must accompany the development application to the Cooma-Monaro Shire Council. The EIS shall be prepared in accordance with clause 34 of the Regulation and shall bear a certificate required by clause 26(1)(b) of the Regulation (see Attachment No. 1). In addition, pursuant to clause 35 of the Regulation, the Director requires that the following matters be specifically addressed in the EIS: the visibility of the operation and measures proposed to mitigate any adverse impacts in relationship to the wider landscape; the interaction of truck movements to and from the site with the current and likely future traffic movements on the Monaro Highway; erosion and sediment control measures in relationship to protection of the Murrumbidgee Catchment. consultation with the State Pollution Control Commission, National parks and Wildlife Service, the Soil Conservation Service, Department of Water Resources, the Department of Main Roads and the State Rail Authority. LE 4. Attachment No. 2 is a guide to the type of information most likely to be relevant to the development you propose; I not all of the matters raised therein may be appropriate for consideration in the EIS for your proposal equally, the I guide is not exhaustive. In preparing your EIS you should approach Cooma-Monaro Shire Council and take into account any comments Council I considers may apply to its determination of the proposal. Should you require any further information regarding this I matter please do not hesitate to contact us again. Yours faithfully, P~~ R. Mason, A/Manager, Assessments Branch As Delegate for the Director. r::/ r R('.Mr'.N'r A.'r r. ATTA('FIN ENT rr -r t'rotY I.: r:ç)tl t Ir!rT: r'rr £VT U()NMENTAt 1 MPA("l' 1'\171'M!'rS In ace rdaiic wi ti-i Part. IV of the Envi roiimentct 1 P Laiiiiiii'j and A_si.snn. At , 1 71, an nnvi roinienL,t.1 i.injact stat rrint. ( rr) must. rii'e t.1 L:)ll'wIn:J rqui.renints: ilj.ii;e3lof the Env1ror1ulf.nt.a1. Planril fly an Assessment Regu1.3t ion, 1980, as amended, the contents of ai EIS shall include the foilc-nvLrig rnatters: ful1 description of the designated development proposed by the deve topinen t:. app 1 i ca t. ion a statement of the objectives of the proposed d?s 1. ynnLed (leveIopme:lt:. a full des(:ription of the existing environment 1. Lk' .y to I_ at fec: ted by 1: Iu proposed designated development, if carried out; (ci) identification and analysis of the likely environmental interactions between the proposed designated development arid the env tronment; analysis of the likely erivirorimental impacts or consequences of carrying out the proposed designated developnP?nt. (including impactions for use and conservation of energy); justification of the proposed designated development in terms of environmental., econornc and social considerations, measures to he taken in conjunction with the proposed designal:.ed development to protect the erivironriient and an assessment of the likely effecLivenies of those measures; (gi) details of energy requirements of the proposed development. and measures to be taken to conserve energy; any feasible alternatives to the carrying out of the proposed designated development, arid reasons for choosing the latter; and (1) corlsequencr?s of not carrying out the proposed development. The EIS must also take into account any matters required by the Direct.or of Environment and Planning pursuant to clause 35 of t1i Regulation, whicli may he included in the I attached letter. The EIS must bear a certificate as require'i by clatise I 26(1) ( h ) of the R.ju l.a t.ion [)EPAR1'MENT OF' ENV [RONMENT AND ['F.A FN( ATTACHMENT No. 7. ADVICE ON TUE PREPARATION OF AN ENVIRONMENTAL IMPACI' STATEMENT (EIS) FOR AN EXTRACTIVE INDUSTRY. A deliriit.ion of extractive industry may be found in paragraph (n) to Schedule 3 of the Environmental Planning and Assessment Regulation, 1980, (as amended). These industries are operations undertaken for the purpose of winning sand, gravel, clay, turf, soil, rock, stone or similar substances. The definition of extractive industry specifically excludes coal, petrol.eum or minerals which are prescribed under the Mining Act, 1973. Extractive industries may take the form of dredging operations, quarrying operations, turf farms or various forms of land excavation etc. Processing of extracted material on the same site as the wi.rining of the material may also constitute an extractive industry. Extractive industries have prompted considerable public controversy in the past since, among other things, they affect visual amenity, generate heavy vehicle movements, raise dust and cause disturbance through noise and blasting. This is the prime reason for designation of extractive industries under the Environmental Planning and Assessment Act, 1979. The purpose of this paper is to outline various issues relevant to the preparation and consideration of an EIS for extractive industries. It is intended to assist the preparation of the EIS. However, it is the applicant's responsibility to identify and address as fully as possible the matters relevant to the specific development proposal in complying with the requirements for EIS preparation (see Attachment No.1). The matters nominated in this paper are not intended as a comprehensive identification of all issues which may arise in I respect of an extractive industry. Some of the issues nominated may not be relevant to a specific proposal. On the other hand, there may be other issues, not included, that are I appropriate for consideration in the EIS. Information provided should be clear, succinct and objective and where appropriate be supported by maps, plans, diagrams I or other descriptive detail. The purpose of the EIS is to enable members of the public, the consent authority (usually the Council) and the Department of Environment and Planning I to properly understand the envi.ronmental consequences of. Lhe proposed development. 2/... I I. I 1 . n,:cr i.p. iitI The descript. tori ot the proposa I should provide genera I I l)ackyroul!d I ii Lorma t tori on the location and e x t e n t o V th* works proposed, an indication of adjacent developments, and details of the s I te , land tenure, zoninqs and re I evatit. forward planning proposals and any other land u s e I coiistr,ii nis The ETS should address the compatibility of the proposal with any regional strategy for extractive industries in the area and with the provisions of the Local Environmental Plans for existing and proposed development. This section should provide specific information on the nature, intent and form of the development. It should, as far as possible, include such details as the processes involved (highlighting any proposed crushing or blastinq), disposal of wastes, landscaping and site rehabilitation. A description should also be provided of associated operations such as the transport of materials and use .of the end product if likely to have environmental implications. Particular details that may be relevant include: Characteristics and economic significance of the resource Possible availability of alternative resources. Quantity of materials to be extracted. Methods of extraction / plans of operations. Details of any blasting and/or crushing. Eifects of vibrations. Type of machinery and equipment to be used. Expected life of the operation. tumber of persons to be employed. Hours of operation. Details of necessary stockpiling. Access arrangements - truck routes, truck numbers etc. Site drainage and erosion controls. Proposals for rehabilitation. 2. Description of the Environment. This should provide details of the environment in the vicinity of the development site and also of aspects of the environment likely to be affected by any facet of the proposal. In this regard, physical, natural, social., archaeological and economic aspects of the environment should be described to the extent necessary for assessment of the environment.al impact of the proposed development. J. Analysis of Environmental Impacts. Environmental impacts usually associated with ext ractive iiidtistri.es are listed below. Where relevant to the specific proposal, these should be addressec1 in the ETS, taking into account the adequacy of safeguards proposed to miii tnt ise theiti. 3/. L I The U low of any affocted rivers or wa t.ercourses . The effect of the extraction on the sediment transport rat.e of any affected rivers or wat.ercourses. I The bed and bank Stability of any affected rivers during and after compLetion of the operations. . Any possible siltation, sedimentation or downstream I effects of the operation. • Any likeLy cumulative effects of the proposed operation when considered together with other operations in the vicinity. I Details of floods and any likely effects of the operation on flood liability of surrounding lands. . The possible effects of flooding on the operation. I Effects on flora and fauna. The agricultural viability of the landholding. . Likely noise/vibration disturbance caused by the operations, including transport operations, on I nearby residences. Other impacts of trucking movements, including access over railways and onto highways. I [)ust nuisance likely to be caused. Effects on water, quality of nearby watercourses. . Disposal of waste material. Effects on the visual environment. I Any likely affectation of sites of Aboriginal archaeological or European heritage value if located I in the vicinity of operations. In addition, any potential, for hazard or risks to public safety and any proposals to monitor and reduce environmental I impacts should be included. • Contact with relevant Government Authorities. I In preparing the EIS, it Is suggested that authorities, such as those listed below, should be consulted and their comments I taken into account in the EIS. The State Pollution Control Commission in regard to air, water and noise impacts and relevant pollution control legislation requirements; I The Soil Conservation Service regarding appropriate erosion control and rehabilitation procedures; . The Department of Agriculture if prime agricultural land I may be affected by the proposal; and The Heritage Council of NSW if the proposal is likely to affect any place or building having heritage significance for the State; the National Parks and Wildlife Service I if aboriginal places or relics are likely to be affected. It i.s the responsibi.Ii.t.y of the person preparinq the ETS to I det ermine those Departments relevant to development. the riroposed I I i4i I APPENDIX B COOMA-MONARO SHIRE COUNCIL P.O. Box 714, COOMA N.S.W. 2630 All Communications to be addressed to the Shire Clerk Council Chambers Mr. Dakin RD:HR 81 Commissioner Street OurReI: 856.01 r STD 064 52 1177 Iml 19th August, 1988 Fax: 064 52 4360 [ Kinhill Engineers Pty Ltd.1 G.P.O. Box 78, I CANBERRA CITY ACT 2601 I Dear Sir, SUBJECT: PROPOSED HARD ROCK QUARRY - ROCK FLAT Receipt is acknowledged of your letter dated 16th August 1988. An apology is extended for the lack of a reply to your letter of the 28th June, 1988. The Shire Engineer was consulted and has presented the following comments: A Type 1 Intersection with the Monaro Highway including a drainage culvert would be required. Access road is to be sealed to a point 100 metres from the bitumen edge (Monaro Highway). Formation width 8 metres, sealed width 6.2 metres. Railway level crossing to be to the standards of the State Rail Authority. It is recommended that consultation be held with the authority. The Council's Town Planner has had discussions with a representative of your office and advised of the need to consult with a variety of government departments relevant to this application notably- State Pollution Control Commission Water Resources Commission Soil Conservation Service Department of Main Roads State Rail Authority National Parks and Wildlife .2/ 2. Kinhill Engineers Pty Ltd (file no. 856.01) 19th August. 1988 Council will be interested in the methods of restoration of the site and on going program of rehabilitation. Trusting these details are satisfactory. Yours faithfully, B. ç'1lvin Shii'e Cle 67 I- New South Wales Government I State PoIIutiQn1ItIqI Comm ission~Pa :: 19 % State Office Block Ii 84 Crown Street Mr J Kaucz Wollongong 2500 I Kinhill Engineers Ply LI. LE P.O. Box 513 Wollongong East P.O. Box 246 .. Our Reference: KIPPAX A.C.T. 2615 1-1' 150,271 GD:TP -• - I Your Reference: Contact: Gurry Dover 268108 Telephone: 042 268100 268111 Facsimile: 042 268268 Dear Mr Kaucz Proposed Hard flock Quarry at Flat ROCk .1 refer to your letter of 28 June 1988, concerning the preparution of an Environmental Impact Statement for the establishment of the above quarry on behalf of Mr N. Snowden. In preparing the E.LS the following matters should be addre.ssed. Water PulluLion Control of scouring and subsequent. siltation of streams caused by stormwater run-off across areas of disturbed earth including vehicle traffic areas Treatment and/or disposal of wastewater if wet processing is used. Financial guarantees as to rehabilitation. (Rehabilitation of the site should be in accordance with the recommendation of the Soil Conservation Service of N.S.W.) Air Pollution Assessment of dust emissions from trucks passing through urban centres. Assessment, of dust emissions from trucks passing mtlong urise;,lod access roads. Description of dust controls at quarry site. Noise Pollution flours of operation including times trucks may eriler and leave quarry. Distance to nearest occupied dwelling and also lurid presently unoccupied but zoned "residential't. 2/..... III I -2- Measured background noise levels. Measured or ca]culated noise impact on receptor locations, I particularly crushing and other equipment used on site. Noise measurerrients of any equipment used on site. Following development consent by Council the operators of the quarry will require formal approval for its establishment under Section 17 of I the State Pollution Control Commission Act. Should you wish to discuss any of these matters may I suggest you conta ct the above officer. I Yours faithfully I kD T. -o ajisen I 15 JUL 1988 I . New South Wales Gov -- Department of Water Resources Macquarie Towers Mr. J. Kaucz, 10 Valentine Avenuq / Kinhill Engineers Pty. Limited, P.O. Rox 3720 P.O. Box 246, KIPPAX. A.C.T. 2615 1:1:8956211 tMn osw-1—P Fax: 895 7281 Contact Name: Mr. C. Rebello Tel: 7449 Our Ret: 88/16570 1860119 Your Ret: 88.5005 MDR:maf '•1• 7° / -lr'e - Dear Sir, Re: Proposed Hard Rock Quarry at Rock Flat I refer to your letter of 28th June 1988, requesting advice on any special issues this Department would wish addressed in relation to the above proposal. Enclosed for your convenience and guidance is our document "General Requirements for Environmental Impact Statements". I trust this document, essentially a Departmental 'checklist', will assist you in your further deliberations on this matter. Yours faithfully, /(t for Manager, Investigations Unit, Technical Services Division. End. - iJ M New South Wales Government Soil ConservatIon Service P.O. Box 26, Cooma, N.S.W. 263.2 15th July, 1956 Mr. J. Kaucz, Telephone: Manager Environmental Planning 064-521455 Canberra Region, Fax. No: 064.-522080 Kinhill Engineers Pty. Ltd., Contuot: P.O. Box 246, ference: FA KIPPAX. A. C.T, 2615 4/26 Your r&erence. Dear Sir, re: Proposed Hard. Rock Quarry at Rock. Flat Portion 87, Parish of aladstone, County of Beresforci FoUowing an inspection of the site for the proposed development, I below is an outline of requirements by this Service for control of erosion and sedimentation: I (1) Access Road The acooss road into the site should'be designed and constructed to ensure sediment does not wash into I adjacent drainage lines. All disturbed areas associated with access road development should be revegetated immediately following construction, I (2) Runoff Management and Sediment Cntro1 Dosign of the works area should ensure that Lines from I the crushing and screening operations are collected on-site. Construction of a sediment pond will be necessary to collect these fines and sediment from I works areas. Ponds should be constructed witl2 upstream and downstreatn batters 2*:1 (horizontal:vertjcal) These ponds must be I maintained by cleaning out sediment when ponds have reached approximately 5096 capacity. The site to dispose of sediment should be nominated in the plan of operation I for control of Lines and sediment. A drainage control plan will be required for the site to ensure sediment is collected and directed into the I sediment collection ponds. Any diversion drains or banks constructed should be no more than 1-2% grade. 'I. I 110 -2- 3. SIte Rhahj.j.jon A I site.rehabilitation ;1a.•i Should be Pzeparec1 for the The plan should outline the various stages of rehabilitation which should be carried progresve1y out during the extraction operation, I All areas which will extraction be disturbed during the process should be stripped of topsoil, The topsoil then should bestocIcpja for I spreading at 100 - lO mm depth on disturbedlat' areas. Slopoo Within the extraction areas should either I (a)cut to grad (minimum 2 horizon j, vertical) I which will enable retention of topsoil, or (b) benched at seleoled i.ntervajs and trees established along the beohes. I Topsoil should be spread then seed and Lertiliser over all disturbed areas, by the applied at rates specified I Distriot Soil Conservationist Cooma. Prior to implementation of any of the nominated in the plans prepared above measures I control as well as rehabilitationfor erosion and aediznent review the plans. p this Service should Yours faithfully, John H. Rogera, District Soil Conservationist Ozna. P:ease uddres --Uqlculw - 1, I OMR EDSD4RTMENT OF MAIN ROADS, N S W BegaNSW 2550 I 'y SOUTH COAST DIVISION DX4908 167 Auckland Street, Bega and quot: our ;eference Man ger Envirnmenta1 Planning CRM GAM KI Telex - 61096 I Facsirnile-W641 923369 P0 Box 246 Telephone-(064) 921600 KIPPAX ACT 2615 2 I Mr Moffitt -I Dear Sir I refer to your letter dated 28 June 1988 (your reference I 88.5005 MDR:rnaf) regarding the Department's requirements for the establishment of a hard rock quarry at Rock Flat, 14 km south of Cooma, on the Monaro Highway. I Council is requested to implement the following conditions as a part of Development Consent. I The access point to the highway to have 170 m sight distance for each direction of travel. I The access to be constructed to a "type 1" minimum design standard and to be fully bitumen sealed from the edge of the existing highway to the property boundary to prevent dust problems associated with the movement of traffic onto I the highway from quarry sites. I No other major problems are envisaged at this stage. Yours faithfully I hto A/Divisional I F.1 147 I New South Wales Government 1 National Parks and Wildlife Service; —SOUTH EASTERN REGION I RC0 03105 eg Level 1 Kinhill Eineers Pty Ltd CS Queanbeyan 1 P.O. &c 246 Fh. P.O. Box 733 U KLPPAX ACT 2615 Queanbeyan,N.S.W. 2620 i1iH I' Attentiai: 1. Kauc Our reference: ED;SF:KJ:F/2481 I Your reference:88 .5005 MDR:maf -- Telephone: (062) 97 6144 Telex: AA 61582 I. 2 August 1988 Dear Mr/MS Kaucz RE: PROPOSED HARD ROCK QUARRY AT ROCK FLAT Thank you for your enquiry concerning issues with which the Service is concerned relative to this development. The Service is concerned with conservation of significant natural (plant and animal), physical and cultural features outside its estate. There is a site of geological and prehistoric significance in the Rock Flat area, the Rock Flat mineral springs. A summary of my knowledge of the site I is attached (an exerpt from an internal report written in 1984). Prof. Keith Crook of Australian National University Geology Department may be able to provide more information about the geological significance of the area. No archaeological sites have been recorded from the subject area and there is low probability of sites being present. You are advised that an archaeological survey should not be necessary. If any sites are found I during quarrying operations, works must cease and the Archaeologist at this - office notified. Thank you for your cooperation on this matter. Yours faithfully SUE- FEARY Archaeologist FOR DIRECTOR KIIdIIILL Kinhifl Engineers Pty Ltd 5th Floor 10 Moore Street 5005 Canberra ACT 2600 R:bpa Australia 16 August 1988 GPO Box 78 Canberra City 2601 Telephone (062) 68 3150 Facsimile (062) 683123 The Divisional Engineer Incorporated in South Austraka State Rail Authority of New South Wales Sloane Street COULBURN NSW 2580 Dear Sir, RE: PROPOSED HARD ROCK QUARRY AT ROCK FIAT We refer to our correspondence to you on 1 July 1988, requesting a written inventory of the issues with which your organisation is concerned relative to this development and the preparation of the environmental impact statement. Your response was requested by Monday 25 July. We earnestly request that you address the issues of concern to SPA and respond as soon as conveniently possible. If you have any queries on the matter, please contact Mr Michael Reeves. Yours faithfully, KINHILL ENGINEERS PT? LTD 7 n1 KAUCZ ACER ENVIRONMENTAL PLANNING -.-... CANBERRA REGION (J c Ct 7$ &C CLtL - I KIt1LL I I I n I I I APPENDIX C DEPAI4ENT OF MAIN ROADS GRADING TESTS FROM ROCK FUT QUARRY I I D1&?ARTMINT OF MAU4 ROAD, N,8,W. File 4 04_TotNsE GRADED CRUSHED ROCK PAVEMENT MATERIAL R.O. D.O. File I .j6tat HLhway No 19. Shire of Coama. Monaro W.O.File Mainterncr in Cooma - Nimrnftabel area Lsb.FLLe 1<9904 Z.ab.No. Laboratory at Bega I Date Te.UngAuthOrLzed(M.R. Form 130) - 1 Rock F let Rook rype DGB20 1Proposed use Maintenance Sippitet N/A - Quantity rep:.sentod j Submitted by Fl Southwell SPECIFICATION LD4ITS SAMPLE N1JMI3ER TEST DETAILS clue CIW Clue . DGB20 DGS2O 00840 1 2 3 4 5 I Chaina8e (for Samples cr toad) Depths between I which aempies taken --... -.-..--______.. --- -... Pretratmont (IC. dp back of form) I Pose 53•y 0/6 - - 100 100.0 100.0 100 01 100.0 100.0 Psss37.5rnmalave % - . - 95-100 100.0 100.0 100.0 100.0 100.0 Pass 26.Smmslave 7'. 100 100 70-90 100.0 100.0 100.0 100.0 100.0 I T106 Ps..19.Ommsiivi % 95-100 93-100 60-85 99.3 98.6 98.8 98.6 99.0 I Pa,, 13.2mmeiev. 17. 75-90 70-90 30...75 08.6 77.0 81.2 02.8 80.0 Paew6.lOmmaleve Va 53-75 50-75 33-60 68.8 48.1 56.0 58.7 53.1 Ps a a 2.36nuo el*ve% 3S S5 30-55 . 25 60 51,2 30.5 35,6 39.1 32.9 56.4 52.5 I T107 Pa,i425j.nnsleve % -. - - 66,8 57.5 579 33.5 Pa.. 75msleve % - .. - 48.7 37.1 37.7 38.2 21.7 21.9 19.0 I Lesuth.rl3.3Mm % - - - 28.3 20,9 A-Pa.a425prnai*vSV4O-6O 38 62 35-62 66.8 57.5 57.9 56.4 52.5 iee 67.7 63.8 TIOS B_ 40-50 e-e2 38-62 72.9 64.5 65,1 I :::- ;::5V 3562 35-62 58.1 56.3 57.6 57,3 56.7 - Pace Thjrr ,Icve 7' 40-60.. 56.0 44.0 44.0 48.0 45.0 T 108 Liquid Limit 'Is I 20 (max.) 23 (max.) 23 I 22.0 21.0 T 109 PlasUc Limit % . 00 20 (max.) 20 (max.) 20 (max.) 23,5 20.5 21.0 6(m.x.) 12(m.x.) 12(mu.) .32.5 23.5 2300 26.0 1 24._0_ - '•- I T 114 M.D.C.S. (MPa) 1.7 (mLn.)- 1.0 (mm.) 1.0 (mm.) Particle Shape, 2:1 ratio T 213 35 (max.) 40 (max.) 40 (max.) Aggrepti Dry Str.ngth(kN) - - - AWsste Wet Str,ngth(kN) 100 100 100 T 2.15 Tan For Cent Fines Vaiva (mm) (mm) (mtn) (max) 35(max) ii REMARKS: . Specl.ficaUona: M.R. Form No. 743 and 744 - . If eon.plaetic If piasUc Maximum valu. of 60 is permitted for material which is to be lime atablised. SIGNATURE ...... i..0...... A Officer DESIGNATION bor 1985 DATE...... I DFARTMEN'r OF MAIN lOAD, N.S.W. DENSE GRADED CRUSHED ROCK PAVEMENT MATERIAL :: I D.O. File ighway No 19 - Shire of' Cooma-Monaro W.O.Flle /ai ntanance in Cooma - Nimmit.ab1 area Lob. File K9908 L.aboretoryat Bega 0.r Simple' 12 bate ReceIved 23/1/85 bite Testing Authorired (M.R. Form 150) - J :eme otQurrj Rock F lot ock Type Basalt - Propoaed uaa Maintenuce pplier QuantIty rapreNsntsd Submitted by C F i she r SPECiFICATION LIMITS SAMPLE NUMSER TE8T DETAILS Class Ciiu CIIU I D0520 D0320 DGS4O. 1. 2 3 4 5 Chains go (for Sampisa ax poa I Dpthe between which eamplee taken Pretriatment (iei back of form) - Paaa53.Ornm'uieve - 100 100 100 100 100 100 Pass37.Srumalev. 3', - '-.. 9$-00 100 100 100 100 .100 Pica 26.5mrnaleve 7. 100 100 70-90 100 100 100 100 100 106 Psi. 19.0mm sIeve 7. 95-100 95-100 60-85 1 98.9 100 98.8 98,4 99.0 Pasal3.2mrniiev. % 75-90 70.90 50-75 85.2 89.2 90.3 83.5 89.6 54,9 Pae,6,7Omm,jeye V. 55.-75 5075 35-60 59,7 575 72 67.7 I Pass 2. .16 inm sieve 7. 3555 3053 25.60 42.2 34,3 52.4 35.6 45.5 107 Psa425pme1eve % - - -- 70.4 58.5 65.8 67.3 63.8 I Pus 75mu1eve % - - - 46.7 38.2 43.9 44.2 43.8 Leesthanl3.5jjm % - - - 25.8 22.0 24.4 24.9 24.7 A-Pasu425miLevo7 40-60 38-62 3863 70.4 58.5 65.8 67.3 63.8 I Pu. p 7im sieve RATIOS a425 7 40-60 33-62 38-62 '66.3 65.3 66.7 65.7 68.7 40-40 39-62 39-62 1 V c_::t:3; 7 55,2 57.6 55.6 56.3 56.4 J_ T 108 LIquid L.Lmlt % * 20 (max.) 23 (max,) 23 47.0 41.0 49,0 49.0 50.0 109 Plastic Limit % '• 20 (max.) 20 (max.) 20 (max.) 22,0 21.0 22,5 24.0 27.5 I asticity India 6 (mix,) 12 (mix.) 12 (max.) 25.0 20.0 26.5 25.0 22 . 5 T 114 M.D.C.S. (MPu) 1 7 (mm) 1 10 (miii) 10 (miii) 2:1 ratLo (%m1shapen) 35 (max,) 40(max.) 40 (max.) Ag.gst. bry Strøngth(k14) - - 215 Aggup,. Wet Strengih(k.N) 100 100 100 .Ten Per Csnt Ftr..* Value (mm) (mlii) (mm) I (%viziatIon) 3$ (max) 3$ (mix) 35 (max) MARR.SI Bp.citIcaUonh M.R. Form No. 743 and 744 jt non-piasUe If plaatic I V Mazimum value of 60 Is permItted for material . which Is to be Iirno_stabtlaed. -- I SIGNATuRE ....hwejl ..... I DESIGNATION I DATE 198. DEPARTMENT CF MAIN ROAD. N.8.W, H.O. FIt. A'- DENSE GRADED CRUSHED ROCK PAVEMENT MATERIAL r D.O. FUa . Hiçhway No 19 - Shire of Cooma Monaro W.0,Fi1. ,a intenence in Cooma - Nimmitab1 area L..b.No. 1<9908 7 Laboratory at Bega 12 _ Date Received 23/1/85 Pete Teiting Authorized(M.R. Form 130) Aw of SI.TIe, Basalt - Maintenance fQuaMY Rock FlQt Rock'Iype !rop5du!_ C Fisher supplisp Qumntity r.pr.aented Submitted by - - LBPECIICATION LIMITS SAMPLE NUMflER TEST DETAILS Cliii Cliii Cliii - V V io DGS20 DG540 B D0930 I.6. - Chilnaga ((or Semplee ax road) bsptha between *ltich samptec taken d Pretreatment (ice beck of form) V ______I_ 100 100100 100 100 Pa,e53.Omnisieve 1/0 - - - - 100 - 100 100 100 Pass 37.5mm sieve 0/6 ;- , 95-100 100 100 . 3.00 100 100 100 I Pass 26.5mm sieve V. 100 100 70-90 - 3.00 99.4 99.7 98.3 99.7 - T106 Pae.19,Ommsieve V. 95-100 95-100 60-85 100 V 90.4 Pass 13.2mrnsieve V. 75-90 70-90 50-75 89.5 86.8 67.5 I 73.0 30.5 58.9 - Pa.i5.7Orw sieve % 3573 5D-75 35-60 45.4 60.7 32.6 Pasa2.36mni sieve % 33-55 30-55 25-6020.6 41.0 49.9 14.4 1 48.5 65.4 - 58.7 54.2 51.9 T101 Paea425ms1eve V. - - - 32.9 42.7 34.8 36.6 36.6 ?.'. 7Simuieve % - -- 3,57 23.4 19.3 20.9 230 I La.athanl3.Swn - 51.9 APas,425irn.iioveV40-6O 35-62 35-62 48.5 67.8 65.3 59.3 67.5 70.5 I BiLeveVP::a 4Spm 40-60 38- 62 38-62 38-6a 56.8 54.6 55.5 57.1 62.8 Phxi 1..j;r,. .40-60 3s-62 46.0 47.0 40.0 43.0 55.0 uid Limit 7. • 20 (max.) 23 (max.) 23 (mix.) 25 . 25.5 23.0 25.0 22.5 stic Lirlt V. •S 20 (max.) 20 (max.) 20 (max.) 5 21 • 17.0 18 0 32 5 attctty index 6 (mix,) 12 (max.) 12'(max.) 20 • 5 5 • Lpp T114 (M) 1.7(TlIn.) tO(mln:) 1.0(rntn,) PartIcle Ships1 2t1 ratIo 35 (max.)_- 40(max.) 40(rnaz.) V Agregste Dey Strenth(kN) Aggr.mte Wet Sttigih(kfl) lOG 100 100- V T 215 Ten Pet Ciit lines Value (mlii) (mlii) (mlii) (%vv1itlon)41 35(mix) U(mix) -1---- REMARKS; Specifications; M.R. Form No. 743 and 744 . If non.plaiue ** If plastic MaxLmum valu. of 60 is permitted for material I . V whlcb is to be lime atabitsed. SIGNA'rURR...... oll I V DESIOtAT10N I ...... a S...... U: b iT); i. LII tLri LA) (1 - I DEPARTMNX' OP MAIN ROAD, N.S.W. DENSE GRADED CRUSHED ROCK PAVEMENT MATERIAL ihO. PU. D.O. File W.O. File .J?4te Hi ghway No 19 - Shire of Cooms-Monaro I inintenance in Cooma - Nimmitebe]. area Lab. File Lab.No. 1<9908 - L.aborator)lit Bea flo.or SarnpIe 12 Dgto Received •23/1/65 I DpteTsat.ingAuthorized(M.R. ?orn 150) I .rte of Quarry Rock Flat RockType Bua1t I Ptopoa.dua. Maintenance Supplict Quantity repreaented - Submitted by I C Fisher SPECIFICATION LIMITS SAMPLE NUMLIER TEST DETAILS Civa 1 Cliii 1 c.i. D13520 I D0920 I Dc)540. I 11. 12 ChaLnee (for Samples ax road) -- D.pthi between which_camples_taken Pretreatment (see beck of form) P... 53.0mm dcvi 7. - - 100 100 100 Pasa 37.5mm sieve 7. - - 95- 100 100 100 Pace 26.5mm sieve 7. 100 10 70-90 100 100 T 106 Pa., 19,0mm sieve 7. 95 -100 95- 100 6055 99.3 99.4 P.., 13.2mm dcvi 7. 75 - 90 70 • 90 50 - 75 84.3 87.4 Pa,. 6.70mm sieve 7. - $5..73 50-73 35 -60 56.]. 61.0 Pass 2.36mm alive 7. 35 - 55 30-55 25 -60 35.2 40.5 T 107 Pt.. 425im sieve 7. - - - 64.6 -. 65.2 Peus 75prn sieve 7. - - - 42.3 47.8 L.ac than 13.5um 7. - - 25.2 30.0 A - Paas 425nn sleva7 40 - 60 38-62 38 63 64.6 65.2 P..ca 7$pm sieve B 73.3 - Pass 425im sieve7 40 - 60 38- 62 38-62 65.5 Los 59.6 62.8 c- :t;J,7 40-60 38-62 36-62 47.0 53.0 '1' 101 Liquid Limit 7. * 20 (max) 23 (max.) 23 (max.) T 109 Plast.la Limit 7. 44 20 (max,) 20 (max.) 20 (max,) 22.5 24.5 Pl.aeticlty Index 6 (max.) 12 (max.) 12 (max.) 24.5 28.5 T 114 M.Li'.C.9. (MPa) 1.7 (mm.) 1.0 (mm.) 1.0 (mlii.) Particle 6hape, 2:1 ratio T 213 35 (max.) 40 (max.) 40 (max.) (7. nitnc4pan) Aggregate bTy Strength(kN) - - - Aggregate W.t Strength(kN) 100 100 100 .,. Ten Per Cent Flnii V.iu. (mitt) (mitt) (mEn) (%var1at1on) 35 (Max) 31 (max) 38 (max) REMARKS: SpeolfiesUort.; M.R. Form No. 743 and 744 * If on.plaUc •* IC plastic $ Maximum value of 60 Is parmitted for material which is to be 1ie itabli,ed. SIGNATURE M ...9Jth ...... DESIGNATiON .i!2.!ctif ...... f ic er 3 December 1985