LIGHTING REPORT APPENDIX ENVIRONMENTAL IMPACT STATEMENT

Transcription

1 LIGHTING REPORT APPENDIX T ENVIRONMENTAL IMPACT STATEMENT

2 Site Infrastructure Lighting Report BORAL Gold Coast Quarry, Reedy Creek B12119ESR002 April 2013

3 LIGHTING REPORT for ELECTRICAL SERVICES at BORAL GOLD COAST QUARRY FEB 2013 T: E: Level 1, 238 Old Cleveland Road, Coorparoo QLD 4151 PO Box 790, Coorparoo QLD Revision A

4 Page 2 Revision Date Issue Issued by Checked A 1/2/2013 FINAL NA AC Table of Contents 1. Executive Summary Introduction Terms of Reference STANDARDS Australian Standard EXISTING CONDITIONS Existing Site PROPOSED LIGHTING Light Source Luminaire Luminaire Application Lighting Control LIGHTING DESIGN Site Lighting RESPONSE TO EIS... 14

5 Page 3 Glossary of Terms AS Lot 105 lux K LED ToR Australian Standard Lot 105 on SP and constitutes the land that is subject to the proposed quarry development Standard International unit of illuminance Kelvin (unit of measurement of colour temperature) Light Emitting Diode Terms of Reference

6 Page 4 1. Executive Summary The Site Infrastructure Report for Lighting forms part of the Environmental Impact Assessment (EIS) for a new extractive industry operation (quarry), proposed by Boral Resources (Qld) Pty Limited, on a greenfield site at Old Coach Road, Reedy Creek, Gold Coast. The contents of this report have been prepared in response to the Terms of Reference for the EIS related to Lighting issued by the Queensland Government for the quarry project. This report provides information on the existing light sources in and around the site and advises on the likely impact of the lighting associated with the quarry establishment, development and operations stages. Information is provided on the appropriate standards relating to spill lighting and an assessment has been undertaken of the proposed lighting during all stages to ensure that allowable lighting levels at the site boundary fall well below the maximum allowable as defined in the relevant standards. Isolux lighting level contours for the site are included in the report. The report also addresses three (3) factors associated with selection of lighting - luminaire, luminaire application and light source and gives recommendations on the types of luminaire appropriate for the quarry. 2. Introduction MultiTech Solutions have undertaken a study into the effect of the lighting on the new proposed site and the local environment for the Boral Gold Coast Quarry at Lot 105 Old Coach Road, Reedy Creek. This report also identifies means to reduce the overall impact of the lighting on the environment. 2.1 Terms of Reference Multitech Solution has prepared this report in response to the Gold Coast Quarry Project Terms of Reference (TOR) for the Environmental Impact Statement. The ToR Sections pertaining to this report is detailed below: Lighting Description of environmental values "Identify and locate the existing light sources in and around the project site, and describe the possible use of these sources for the site activities. These should include street and any significant private lighting sources, e.g. sporting grounds, night-time industrial operations. Describe the project s proposed lighting strategy for the construction and operation phases, including any scope for sustainable lighting solutions."

7 Page 5 Potential impacts and mitigation measures "Assess all potential impacts of lighting of the project during all stages, with particular reference to objectives to be achieved and management methods to be implemented to mitigate or avoid: visual impact at night night operations/maintenance and effects of lighting on fauna and residents the potential impact of increased vehicular traffic changed habitat conditions for nocturnal fauna and associated impacts." 3. STANDARDS 3.1 Australian Standard AS is the Australian standard for the Control of the obtrusive effect of outdoor lighting. This standard provides guidance on the amount of acceptable spill light from an exterior lighting installation into a neighbouring property. The standard specifically addresses the effects of the spill light on nearby residents, users of adjacent roads and transport signalling systems, but does not consider the effects of ecological light pollution. Table 2.1 (of AS 4282) outlines the recommended maximum values of light, technical parameters for the control of obtrusive light. The table provides the maximum illuminance (in lux) allowed on the vertical plane. These values are to be calculated in the plane of windows in the adjacent property, and when there are no developments in the property the values are calculated at the minimum set back permitted for a dwelling. In areas where the affected property abuts roads lit to Category V5 or above, the surrounds are classified as Light Surrounds. In areas with light surrounds the maximum allowable illuminance is 2 lux. Table 2.1 however does not address the allowable illumination levels to a Greenfield site which is applicable to the site entry from Old Coach Road. However, it does specify the allowable illumination at the boundary of commercial and residential areas in curfewed hours as 4 lux.

8 Page 6 4. EXISTING CONDITIONS 4.1 Existing Site The existing site is currently not illuminated. Figure 1 and 2 below details the site and surrounding areas. Figure 1- Extent of Site.

9 Page 7 Figure 2 - Surrounding Buildings/Settlements (Location of Light Sources)- Depicted by Arrows It is proposed that the main entrance to the quarry will be via Old Coach Road to the Northern side of the site. The Old Coach Road currently does not have any street lighting along the frontage of the site. There is an existing recycling operation on the north side of Old Coach Road. The existing West Burleigh Quarry is too far from the site to provide any contribution to the lighting. Figure 2 above identifies the locations of nearby buildings and streets where existing lighting is present. Due to there being no street lighting and only small settlements nearby there is currently no opportunity to use any existing lighting sources. 5. PROPOSED LIGHTING There are three factors to consider when selecting a light source. Light Source Luminaire Luminaire Application

10 Page Light Source Color temperature of a light source is measured in degrees Kelvin (K) and different type of lamps have different colour temperatures. Figure 3 below details the range of colour temperatures and typical light sources that are used. Figure 3 - Colour Tmperature Chart For the type of work being carried out it is important for the work area to be visible and that colour is perceptible i.e. Identification of safety fluorescent "HI VIS" equipment or personnel is achieved. Lamps with low colour temperatures (less than 2500K) makes it difficult to identify colour. A lamp source close to daylight produces the most appropriate environment to work in. It is proposed that the light source for the main quarry work area is to have a colour temperature close to 5000K and the light source will be either Metal Halide, Fluorescent or LEDs. The use of LED fixtures will be investigated further during the design as a possible low energy sustainable solution for illuminating the specific areas of the site.

11 Page Luminaire A luminaire by definition includes the lamp, the reflector, the diffuser and the control gear. The luminaire determines the distribution of light and this is primarily by the diffuser and the reflector. Asymmetric type distributions are usually the most effective at limiting light spill whilst lighting the task and this type of luminaire is proposed for use on this site (Image 1,2 and 3). Image 1 - Located on Weighbridge, Workshop and Processing Plant Image 2 - Mounted on Quarry Processing Plant

12 Page 10 Image 3 - Wall Mount on Buildings 5.3 Luminaire Application It is proposed that the lighting will only be provided at specific locations and areas throughout the site. Localised lighting will be provided to the various buildings on the site to allow personnel to safely access the buildings. The lighting fittings will be orientated to the horizontal plane to avoid light spill into surrounding areas. The processing plant will be provided with localised lighting to enable staff to safely access the equipment. It is proposed that road lighting will not be provided and reliance will be on the headlights of the various vehicles. Old Coach Road Intersection Lighting At the proposed intersection with Old Coach Road where a Channelised Right Turn (CHR) is proposed there may be a condition imposed by the relevant authority, Gold Coast City Council (GCCC) or the Department of Transport and Main Roads (TMR) to provide Flag Lighting. We do not believe that Code lighting would be necessary at this intersection. Flag Lighting is required at isolated intersections for indication purposes or to highlight isolated localised conflicts. Flag Lighting usually only consists of one or two luminaires around the immediate vicinity of the intersection. These are used to draw the attention of the motorists to the presence of an intersection from a sufficient distance away. A maximum 150 W HPS dished prismatic bowl luminaire should be used at a mounting height of 10.5m and is located at the through road, perpendicular to the side road centreline. Based on the above scenario, the lux levels would be reduced to approximately 7 lux at a distance of 10m from the pole using a 100W HPS lamp and this will have negligible effect on the overall environment as the lighting will only be local to the intersection.

13 Page Lighting Control The site operation hours will be 6am to 6pm Monday to Saturday with maintenance occurring 24 hours Monday to Saturday and 8:00am to 6:00pm Sundays. To provide a sustainable solution it is proposed that a lighting control system be provided comprising photocell and time switch to control the external lighting on the site. The lighting control system will ensure that the lighting is turned off at a predetermined time to eliminate disturbance to neighbouring properties as well as conserve energy. 6. LIGHTING DESIGN 6.1 Site Lighting The lighting around the site will be restricted to specific localised lighting around the buildings and on the processing plant. It is proposed to design the lighting to category P8 as defined in AS NZS 1158 Lighting of Roads and public spaces. P8 relates to Service areas and has an average design level of 7 lux. This level of lighting is considered to be sufficient to provide enough lighting for safe movement. During the construction phase it is proposed to use mobile light towers to provide illumination to the specific areas of activity. The control and timing of the operation of these lights will be agreed to eliminate disturbance to neighbouring properties. Figure 4 below details the proposed lighting levels around the buildings. Figure 5 below details the proposed lighting levels around the processing plant. The lighting layout is based on floodlights mounted at 15m high and positioned at the extremities of the arms with fluorescent fittings positioned at the ends and midpoint of the walkways on the processing plant. The isolux lines detail the lighting levels at 7lux, 4lux and 2 lux around the buildings and plant.

14 Page 12 Figure 4 - Isolux Drawing of lighting levels around the buildings.

15 Page 13 Figure 5 - Isolux Drawing of lighting levels around the processing plant.

16 Page 14 The isolux lines show the level of lighting falls away from the building and we are well within the maximum allowable level of 4 lux at the site boundary as defined in table2.1 of AS RESPONSE TO EIS This section provides response to specific items from the ToR Item Other Rare and Threatened Species - (g) adverse impacts arising from lighting. The lighting design, type of fittings and lighting control is detailed in section 5 and 6 of this report. The design will take account of reducing the spillage of light into surrounding areas. Item Lighting Description of environmental values Refer to Introduction Identify and locate the existing light sources in and around the project site Refer to section 4. Figure 2 identifies the location of the existing light sources around the site. Describe the possible use of these sources for the site activities Refer to section 4 Describe the project s proposed lighting strategy for the construction and operation phases, including any scope for sustainable lighting solutions Refer to section 5 and 6 Potential impacts and mitigation measures Assess all potential impacts of lighting of the project during all stages, with particular reference to objectives to be achieved and management methods to be implemented to mitigate or avoid: visual impact at night - Section 5.2 Image 1,2 and 3 details the use of lighting fittings that are designed to minimise spill lighting. Section 5.4 details the use of lighting control systems that will reduce the visual impact of the site at night. night operations/maintenance and effects of lighting on fauna and residents - Section 5.4 details the use of a lighting control system that will automatically switch off lighting at predetermined times to minimise effect on nearby residents, flora and fauna. In addition the lighting will be designed as detailed in section 6. the potential impact of increased vehicular traffic - As detailed in section 5.3 It is proposed that road lighting will not be provided and reliance will be on the headlights of the various vehicles. changed habitat conditions for nocturnal fauna and associated impacts. - Due to the use of the lighting control system, localised lighting, lighting fittings to minimise spill lighting, the lighting levels around the site will comply with the relevant standards (AS4282) relating to spill lighting.

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