W6048-2017-1Ap1.Pdf
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599000 600000 601000 602000 8080000 8080000 599123 mE 8079025 mN ! 8079000 8079000 601541 mE 8078598 mN ! 8078000 8078000 8077000 598737 mE 8077000 8076835 mN ! 601154 mE 8076410 mN ! 8076000 8076000 599000 600000 601000 602000 MAIN ROADS WESTERN AUSTRALIA LEGEND KIMBERLEY REGION Prescribed Premise Boundary (Gravel Reserve R 41506) GIBB RIVER ROAD: SLK 30 MATERIAL AREA (GRAVEL DERBY RESERVE R 41506) !( ATTACHMENT 2 CAMBALLIN 0100 200 400 600 800 1,000 !( FITZROY CROSSING Proposed Precribed Premise Boundary Meters !( 1·nroads SCALE @ A4 : 20,000 CRS: GDA 1994 MGA Zone 51 fw"ma.. ,, .. ., "''"'"'' DATE: 22/02/2017 DATA SOURCES @ ..-... DRAWN: JJ RAO Imagery sourced Landgate, all other data MRWA Document Path: G:\4. MATERIALS\Gibb River Road\SLK30\Gravel Reserve Boundary.mxd Terex Finlay Radial Stacker I-130 Std Pre-Screen \ \ Pushed- up Gravel \ A -75mm Crushed Gravel Calculation results may differ due to variations in operating conditions and Kimberley Quarries application of crushing and screening equipment. This information does not MRWA Gibb River Road constitute an express or implied warranty, but shows results of calculations based on Jim Sweet information provided by customers or equipment manufacturers. Use this information for estimating purposes only. Project #: 41071 Revision #: - Date: February/20/2017 All calculations performed by AggFlow. http://www.AggFlow.com 595000 597500 600000 602500 605000 8085000 8085000 37.2 dB 8082500 8082500 43.2 dB MEDA STATION HOMESTEAD 8080000 51.2 dB 8080000 (4.2km) 500 m #0 57.2 dB 38.7 dB 111.2 dB 8077500 8077500 1000 m 8075000 8075000 2500 m 8072500 8072500 5000 m 8070000 8070000 595000 597500 600000 602500 605000 MAIN ROADS WESTERN AUSTRALIA LEGEND KIMBERLEY REGION Prescribed Premise Boundary (Gravel Reserve R 41506) GIBB RIVER ROAD: #0 Sensitive Receptors SLK 30 MATERIAL AREA (GRAVEL Separation Distances RESERVE R 41506) DERBY 500 m 2500 m !( 1000 m 5000 m ATTACHMENT 7 CAMBALLIN 0500 1,000 2,000 3,000 4,000 5,000 !( Separation Distance FITZROY CROSSING from Sensitive Receptors Meters !( l'Amainroads SCALE @ A4 : 70,000 CRS: GDA 1994 MGA Zone 51 'ffw \\t-.,1 ...1<, \t,IN\LI\ DATE: 30/03/2017 DATA SOURCES @ DRAWN: JJ RAO Imagery sourced Landgate, all other data MRWA Document Path: G:\4. MATERIALS\Gibb River Road\SLK30\Works Approval and Licencing\Gravel Reserve Sens Receptor - Noise Levels.mxd IA mainroads 'fil!I WESTER1" A!ISTHALIA Enquiries: JJ Rao Our Ref: D17#291394 Your Ref: 26 April 2017 Department of Environment Regulation Kununurra Regional Office Lot 248 Ivanhoe Rd KUNUNURRA WA 6743 Via email: [email protected] Dear Sir/Madam Gibb River Road Gravel Reserve R 41506: Licence Application Supporting Document 1. Background Main Roads Western Australia is planning to commence reconstruction and sealing works on the Gibb River Road between Straight Line Kilometre (SLK 28.4 -62.5). The proposed works are expected to take place in June 2017. To support the requirement for materials, Main Roads is seeking an Operating Licence to extract, crush and screen gravel material from its Reserve located at SLK 30 (Attachment 2). We anticipate that a Works Approval is not needed as the only works required to ‘construct’ the site is clearing, which is already approved for by the DER under a clearing permit, and managed under a Vegetation Management Plan and Revegetation Management Plan. 2. Land Tenure and Ownership The premise on which this application relates to is legally described as Lot 358 on Plan 36522, or gravel reserve R 41506. Lot 865 is owned by the State of Western Australia and is vested to Main Roads for the purpose of a Gravel Pit. The boundaries of R 41506 are illustrated in Attachment 2. 3. Description of Proposed Activities The following works will be conducted within the SLK 30 Gravel Reserve. • Clearing of Vegetation and topsoil/overburden stripping (permitted under CPS 818) • Pushing of lateritic gravel by bulldozer into stockpiles within pit. Approximately 70,000 tonnes will be pushed • Crushing and screening of material if required using a Terrex I-130 Impact crusher with an attached screen. For the purposes of this application, we have assumed all material will require crushing/screening (70,000 tonnes). • Stockpiling and preconditioning of material with water to achieve optimal moisture content. • Haulage of materials to construction site. Main Roads Western Australia mainroads.wa.gov.au Kimberley [email protected] Derby Office, 20 Wodehouse Street, PMB 959, Derby WA 6728 138 138 Kununurra Office, 293 Messmate Way, PO Box 138, Kununurra WA 6743 IA mainroads "• WESTERN AUSTRALIA These works, specifically point 3, fall into the following categories of prescribed premises for which Main Roads is seeking a works approval and licence for: • 12 – Screening etc. of material: premises on which material extracted from the ground is screened, washed, crushed, ground, milled, sized or separated Table 1 below describes the specific activities that constitute categorisation into the above categories. Table 1: Activity Description Category Activity Description Approximate Duration of Volume/Tonnage Activity 12 Extraction from ground, crushing and screening >50,000 Tonnes May 2017 to of material. August 2017 4. Other Approvals and Consultation To date, Main Roads has carried out the following consultations: • Aboriginal Heritage: Ethnographic and Archaeological Survey and Consultation • DER: Vegetation Clearing Approvals • Shire of Derby West Kimberley: Shire has confirmed that no planning approvals or permits are required from them apart from a works approval and operating licence from the DER. Main Roads has been granted the following approvals: • Permit to Clear Native Vegetation (CPS 818) for a portion of Gravel Reserve 41506 • Aboriginal Heritage Clearance from the Warrwa native title claimant group. 5. Competency of the Operator Extraction, crushing and screening of materials will be contracted out to competent contractor through public tender process. Under the contract, the contractor is required to have experienced operator in similar sized and larger operations, and has h hold similar works approvals and licences. All plant and machinery will be supplied by the potential contractor. 6. Public Health and Environmental Risks Main Roads has identified the following public health and environmental risks. These have been identified from environmental assessment work as well as the DER’s guidance documents (separation distances from industrial land uses) Dust The operation of heavy vehicles and a crusher is likely to result in some dust. These may pose a risk to public health. The nature of the material being removed (lateritic gravel), is less dusty than more fine material such as sands, but may still generate some dust especially during crushing/stacking. Noise The operation of heavy vehicles and a crusher is likely to result in high noise. These may pose a risk to public health. The hours of operation for the crushing contract will be between 7am and 5pm, with no works during weekends and public holidays. Noise generating equipment on site is likely to be: Page 2 IA mainroads "• WESTERN AUSTRALIA • Volvo EC480 Excavator: 107 dB (LWA) • Komatsu WA 500-6 Loader : 109 dB (LWA) • John Deere 872D Grader 72 dB (LWA) • Terrex Finlay I-130 Impact Crusher with Pre-Screen 93.7 dB (LWA) 1 • Telestack 424R Radial Stacker 90 dB0F Noise levels listed above are only for standard noise during operation, and does not include brief periods of higher levels (e.g. reversing alarms or tipping of materials) 7. Siting and Location Separation Distances from Sensitive Receptors The closest sensitive receptor to the SLK 30 Gravel Reserve is the Meda Station Homestead, Located approximately 4.2km from the Premise. This is in excess of the recommended buffer distances for crushing and screening activities from both the (draft) DER and EPA Guidance Statements (EPA 2005, DER 2015). Main Roads has undertaken a brief noise assessment using the inverse square law. Based on the list of equipments that are likely to be utilised, cumulative noise levels at the site are expected to be approximately 111.2 dB SPL1F2. Inverse square law calculations indicate that noise levels at the Meda Station Homestead is expected to be approximately 38.7 dB SPL2F3 during operating machine hours (0700 – 1700hrs). This level is considerably lower than the maximum levels listed in the Noise Regulations 1997, which specifies not more than 65 dB at any time (LAmax), for a Noise Sensitive Premise, where there is no influencing factor (DER 2017). Dust is unlikely to affect Meda Station Homestead and will be managed on site using Environmental Management Plans. Main Roads has access to and a licence to use water bore in close proximity to the site for dust suppression purposes. The location of sensitive receptors in relation to the Premise is illustrated in Attachment 7. 9. Management of Potential Impacts to Public Health and the Environment As part of the management of impacts to the general environment, Main Roads is required to abide by a Project Environmental Management Plan. The EMP contains provisions to minimise and manage impacts from Noise and Dust. A copy of the EMP has been provided as an attachment to this document. In addition to the Project EMP, a Construction EMP (crushing) will also be developed to capture requirements in the Project EMP as well as the requirements of any other approvals and consultation processes (including this works approval and licence application). A draft Crushing Construction EMP is attached to this letter. 1 Noise levels not available from manufacturer – assumed levels based on operating capacity 2 Cumulative SPL levels are at 1m. Noise emission levels are nominal and are sourced from equipment specification sheets. Where none were available, levels from comparable equipment of similar size, capacity and powerplant were used. 3 Excludes external effects of ground/air reflection/absorption, dampening from vegetation, wind and external noise sources.