Victoria Park Racecourse Redevelopment Development Application Assessment of Noise, Vibration & Dust KBR Pty Ltd 22 June 2007 Development Application Prepared for KBR Pty Ltd Prepared by Bassett Acoustics ABN 22 004 873 634 Level 6, 100 Pirie Street, Adelaide SA 5000, Australia T +61 8 8418 1000 F +61 8 8418 1001 E adelaide@bassett.com.au www.bassett.com.au 22 June 2007 AA1058 © Bassett Acoustics 2007 The information contained in this document produced by Bassett Acoustics is solely for the use of the Client identified on the cover sheet for the purpose for which it has been prepared and Bassett Acoustics undertakes no duty to or accepts any responsibility to any third party who may rely upon this document. All rights reserved. No section or element of this document may be removed from this document, reproduced, electronically stored or transmitted in any form without the written permission of Bassett Acoustics. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Quality Information Document Development Application Ref AA1058-TE001.REP-REV1 Date 22 June 2007 Prepared by Tom Evans Reviewed by Darren Jurevicius Revision History Revision 0 1 Revision Date 16/05/2007 22/06/2007 Authorised Details Name/Position Draft for comment Final report Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Darren Jurevicius State Manager - Acoustics Darren Jurevicius State Manager - Acoustics Signature Table of Contents 1.0 2.0 Introduction 1 1.1 Background 1 1.2 Site description 1 Criteria 2.1 2.2 2.3 2.4 3.0 4.0 5.0 2 Adelaide (City) Development Plan 2 2.1.1 Noise 2 2.1.2 Vibration and dust 2 Environmental noise 3 2.2.1 Operational noise 3 2.2.2 Construction noise 3 Vibration criteria 3 2.3.1 Human exposure standards 4 2.3.2 Structural damage standards 4 Dust 5 Construction phase 6 3.1 Environmental noise 6 3.2 Vibration 6 3.3 Dust 7 Operational phase 8 4.1 Clipsal V8 Supercar race 8 4.2 Horse racing facility Conclusion Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 8 10 1.0 Introduction 1.1 Background Bassett Acoustics has been engaged by KBR Pty Ltd to provide a preliminary assessment report of the proposed redevelopment of the Victoria Park Racecourse. The report addresses the impact of operation and construction of the development on noise, vibration and dust within the area. The site is within the Adelaide City Council region and an indication of probable compliance with the Adelaide (City) Development Plan and relevant criteria is required for the development application. The proposed development will comprise the removal of the existing buildings at the site (with the exception of the Heritage Grandstand), removal of the masonry wall adjacent Fullarton Road and the construction of a new grandstand. The proposal also includes the realignment of the existing car race track and construction of a new horse racing track. The report assesses the preliminary requirements to achieve compliance with the noise, vibration and dust control principles within the Development Plan, and with applicable criteria. Our assessment is based on the site plans AES623-A-DWG-002, dated March 26, 2007, and AES623-A-DWG-805, dated February 28, 2007, provided to us by KBR. The nomenclature relevant to this report is included in Appendix A. 1.2 Site description The proposed development is to be situated on the existing Victoria Park Racecourse located in the Adelaide City Parklands, on the corner of Fullarton Road and Wakefield Road. Figure 1 shows the location of the site. Figure 1: Location of Victoria Park site Wakefield Road Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 1 Fullarton Road Victoria Park 2.0 Criteria 2.1 Adelaide (City) Development Plan The proposed redevelopment at the Victoria Park Racecourse must comply with the principles of development control as stated within the Adelaide (City) Development Plan to obtain development approval from the Adelaide City Council. The Victoria Park Racecourse is situated in the ‘Eastern Park Lands Policy Area’. It is stated that the desired character for this policy area is comprised of: (a) formal and informal outdoor recreation areas with sporting grounds set amongst dense woodland plantings of local native species; (b) Victoria Park being used for informal and formal recreation within a large open sports field surrounded by the Victoria Park Racecourse and remnant peripheral woodland planting Victoria Park is also located adjacent to East Terrace along which residences are located in the ‘East End Policy Area’. It is stated that the desired character for this policy area is comprised of: (a) a distinctive blend of city living, eating and drinking, creative enterprise, arts culture and shopping. 2.1.1 Noise The Development Plan has noise criteria to which new developments must comply to regulate noise emission and intrusion. The criteria are based on whether the new development will be a noise source or a noise receiver. It is expected that the proposed redevelopment of the Victoria Park Racecourse will predominantly be a noise source. The sources of noise from the development will be mainly from the annual Clipsal V8 Supercar race and regular use of the horse racing facilities. Objective 27 of the Development Plan states that: Development that does not unreasonably interfere with the desired character of the locality by generating unduly annoying or disturbing noise. For developments which will potentially emit noise, the Development Plan states that: Development with potential to emit significant noise (including licensed entertainment premises and licensed premises) should incorporate appropriate noise attenuation measures into their design to prevent noise from causing unreasonable interference with the desired character of the locality, as contemplated in the relevant Zone or Policy Area. 2.1.2 Vibration and dust The Development Plan states that, for the ‘Mixed Use Zone’ including the ‘East End Policy Area’, Principle 22 of development control applies: The nature, scale and intensity of development should result in minimal levels of vibration, dust, odours or other airborne particles and should not detrimentally affect a residential or similar environmentally sensitive zone or development sought within this Zone. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 2 2.2 Environmental noise 2.2.1 Operational noise In South Australia, legislation relevant to allowable environmental noise levels is provided by the Environment Protection (Industrial Noise) Policy 1994 (INP) policy under the Environment Protection Act. Applicable noise criteria for horse racing events at the proposed redevelopment of the Victoria Park Racecourse are derived from the INP. Penalties for the character of noise should be applied according to the INP policy. A 5 dB(A) penalty is applied for each of the characteristics of tone, modulation and impulsiveness. It is expected that significant noise from horse racing at the Racecourse redevelopment will be from Public Address (PA) systems with likely modulation of amplitude. Hence, a 5 dB(A) penalty should be applied for noise from horse racing events at Victoria Park. For residential areas, the LAeq,15min noise criteria become 47 dB(A) during the day (7am to 10pm) and 40 dB(A) during the night (10pm to 7am). 2.2.2 Construction noise The Environment Protection Authority (EPA) state that noisy construction activities should only take place between 7am and 7pm from Monday to Saturday. If construction work on a Sunday or public holiday is deemed essential, then it should only occur between 9am and 7pm. 2.3 Vibration criteria The effects of ground vibration on buildings resulting may be segregated into the following three categories: human exposure - disturbance to building occupants: vibration in which the occupants or users of the building are inconvenienced or possibly disturbed effects on building contents - vibration where the building contents may be affected effects on building structures - vibration in which the integrity of the building or structure itself may be prejudiced. In general, vibration criteria for human disturbance are more stringent than vibration criteria for effects on building contents and building structural damage. Hence, compliance with the more stringent limits dictated by human exposure, will ensure that compliance is also achieved for the other two categories. However, construction work is typically assessed against the structural damage standards as in some cases compliance with human disturbance criteria may not be practical. Note that adjustments to the criteria are warranted in some circumstances as undue restriction on vibration levels may prolong operations and result in greater annoyance. The human disturbance vibration criteria are presented, however it is not envisaged that vibration produced by the Victoria Park Racecourse redevelopment construction work will produce adverse human response. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 3 2.3.1 Human exposure standards Table 1 gives an indication of typical human response to vibration. Table 1: Vibration and human perception of motion Approximate vibration level (mm/s) Degree of perception 0.10 Not felt 0.15 Threshold of perception 0.35 Barely noticeable 1.0 Noticeable 2.2 Easily noticeable 6.0 Strongly noticeable AS 2670.2–1990, Evaluation of human exposure to whole-body vibration, Part 2: Continuous and shock induced vibration in buildings has been adopted as the relevant standard for nuisance vibration levels. The standard provides a collection of curves that specify acceptable vibration levels, at each frequency, for different circumstances. Table 2 provides guidance on the magnitude of vibration at which adverse comment may begin to arise. Prior education and warning of any sensitive receptor exposed to probable vibration perception would ensure that potential annoyance is adequately controlled and managed. Note that regenerated noise (structure-borne noise) may also increase annoyance when construction activity is close to residential homes. Table 2: Building vibration combined direction (x,y,z) vibration criteria, mm/s (rms) Type of building occupancy Continuous or intermittent vibration Transient vibration excitation with several occurrences per day Residential – Night 0.14 2.0 Residential – Day 0.2 6.0 Office 0.4 12.7 Workshop 0.8 12.7 Table 2 indicates that residences are the most sensitive to vibration in terms of likelihood for annoyance. In most cases the vibration generated by construction works activities is continuous or intermittent in character and therefore subject to the lower criteria. 2.3.2 Structural damage standards Currently there exists no Australian Standard for assessment of building damage caused by vibrational energy. German Standard DIN 4150 - Part 3 - Structural Vibration in Buildings - Effects on Structures, provides recommended maximum levels of vibration that reduce the likelihood of building damage caused by vibration. The DIN 4150 values (maximum levels measured in any direction at the foundation, OR, maximum levels measured in (x) or (y) horizontal directions, in the plane of the uppermost floor) are summarised in Table 3. It should be noted that levels higher than these minimum figures for low frequencies may be quite safe, depending on the frequency content of the vibration. These levels are ’safe limits’, up to which no damage due to vibration effects has been observed for the particular class of building. ’Damage’ is defined by DIN 4150 to include even minor non-structural effects such as superficial cracking in cement render, the enlargement of cracks already present, and the separation of partitions or intermediate walls from load bearing walls. DIN 4150 also states that when vibrations higher than the ‘safe limits’ are present, it does not necessarily follow that damage will occur. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 4 Table 3: Structural damage ‘safe limits’ for building vibration Vibration velocity in mm/s At foundation at a frequency of Group Type of structure Plane of floor of uppermost storey Less than 10 Hz 10 Hz to 50 Hz 50 Hz All frequencies 1 Buildings used for commercial purposes, industrial buildings and buildings of similar design 20 20 to 40 40 to 50 40 2 Dwellings and buildings of similar design and/or use 5 5 to 15 15 to 20 15 3 Structures that because of their particular sensitivity to vibration, do not correspond to those listed in Lines 1 or 2 and have intrinsic value (e.g. buildings that are under a preservation order) 3 3 to 8 8 to 10 8 Note: 1. For frequencies above 100 Hz, the higher values in the 50 Hz to 100 Hz column should be used. Where the dynamic loading caused by continuous vibration gives rise to dynamic magnification due to resonance, especially at the lower frequencies where lower guide values apply, then the guide values in the above Table may need to be reduced by up to 50%. 2.4 Dust 1 The NSW EPA provides impact assessment criteria for ensuring that air quality impacts, including from construction sites, are maintained within acceptable levels. The applicable pollutant for assessing construction generated dust is PM10 with the impact assessment criteria presented in Table 4. Table 4: NSW EPA PM10 criteria 3 Averaging period Concentration (µg/m ) 24 hour 50 Annual 30 3 The 24 hour criterion of 50 µg/m is applicable for short term construction work. Note that the SA EPA advises use of the National Environment Protection Council (NEPC) outdoor air quality 2 standards for ambient air quality management. The NEPC 24 hour criterion for PM10 concentration 3 averaged over 24 hours is also 50 µg/m . The NSW EPA state that impacts for PM10 should be assessed at the nearest existing off-site sensitive receptor. Typically, PM10 concentrations attained on construction sites are considerably higher than received at off-site sensitive receptors due to monitoring being closer to the source. 1 NSW EPA, 2001, Approved Methods and Guidance – For the Modelling and assessment of Air Pollutants (from stationary sources) in NSW 2 NEPC, 1998, National Environment Protection Measure for Ambient Air Quality Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 5 3.0 Construction phase For the proposed Victoria Park Racecourse redevelopment, the general construction activities expected to occur are: demolition of existing buildings and masonry wall construction of proposed grandstand establishment of new horse racing track realignment of existing Clipsal race track. 3.1 Environmental noise Construction work is only planned to take place during daytime hours (i.e. 7am to 7pm from Monday to Saturday), in compliance with the EPA requirements. Noise emission during construction will be managed by the preparation of a Noise & Vibration Management Plan (NVMP) when construction dates and schedules are known. The NVMP will outline noise mitigation measures for construction activities where possible, such as: Site management: - orientation of plant so that noise emission occurs away from residences - truck movements designed to avoid residential streets - minimal use of reverse beepers and horns - two way radios used at minimum effective volume - location of equipment to take advantage of any noise barriers provided by existing site features and structures - use of temporary noise barriers Equipment management: - selection of low-noise plant and equipment - use of necessary power only - use of quieter construction methods - use of traffic practice controllers Noise sensitive receiver management: - ongoing consultation with affected residents - maintenance of a complaint hotline The NVMP will assist in retaining the desired character of both the ‘Eastern Park Lands Policy Zone’ and ‘East End Policy Area’ as much as is feasible during construction. 3.2 Vibration Vibration produced by the construction of the proposed Racecourse redevelopment has been assessed for its effect on both nearby residences and the Heritage Grandstand. Construction work will be undertaken to realign the Clipsal race track within 14 metres of the Heritage Grandstand, and this will require monitoring to ensure that the probability of damage occurring to the Grandstand is minimised. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 6 The major sources of ground vibration during construction are likely to be compactors and vibratory rollers. It is not expected that these activities will have significant effects on nearby residences. Vibration during construction at the site will be proactively managed through the procedures documented in the NVMP. However, typical measures that will be used to limit the likelihood of vibration-induced damage to the Heritage Grandstand include: the establishment of ‘safe’ equipment buffer distances from the Heritage Grandstand through monitoring of equipment operating in similar conditions at the site, although away from the Grandstand the use of flashing light alarms that are triggered when monitored vibration levels exceed alarm limit levels near to, although below, the adopted criterion. 3.3 Dust Dust emissions from the construction work will be controlled, in accordance with standard best 3 practices, such that it is envisaged the PM10 concentration will not likely exceed the 50 µg/m criterion at off-site sensitive receptors. Emissions are predicted to have the highest impact during the construction of the new horse racing track near to the residences along East Terrace, and these represent the nearest off-site sensitive receptors. During this phase of construction, water cart trucks will be used to reduce dust emission. On particularly windy days where the wind is likely to carry dust from construction works towards East Terrace residences, workers operating water sprayers will follow targeted activities that are producing significant dust. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 7 4.0 Operational phase The assessment of the operational phase is focused on noise emission from the proposed redevelopment. It is expected that vibration and dust emission during operation of the facility will be negligible. 4.1 Clipsal V8 Supercar race The major effect of the proposed redevelopment on the annual Clipsal V8 Supercar race will be the realignment of the car race track (within Victoria Park) approximately 100 metres to the east of the current track. This is expected to benefit noise sensitive receivers along East Terrace but increase the noise impact of the event on residences to the east of Fullarton Road, which reside within the Burnside City Council area. The removal of the existing masonry wall along Fullarton Road is also expected to increase the noise impact of the event on these residences. It should be noted that as an event of special significance, the race is not subject to any environmental noise criteria. Measurements taken by Bassett Acoustics at the 2006 Clipsal V8 Supercar race were used to predict the relative change from existing noise levels caused by the realignment of the car race track. The noise level changes at residences along East Terrace and east of Fullarton Road were considered. The front row of buildings along Fullarton Road has been assumed to be commercial, with the noise levels at residences one row back assessed. Based on the predictions the following approximate noise level changes are expected: a decrease of up to 2 dB(A) at residences along East Terrace, this represents a just perceptible noise level decrease. At locations where noise levels are controlled from the Wakefield Road section of track there is not expected to be a significant change in noise levels. generally a 3 to 4 dB(A) increase at residences to the east of Fullarton Road, this represents a just perceptible noise level increase a maximum increase of approximately 7 dB(A) at the westernmost residences along Alexander Street, east of Fullarton Road, this represents a noticeable noise level increase. The measurements taken at the 2006 event indicated that the Occupational Health and Safety (OH&S) LAeq,8hr limit of 85 dB(A) was exceeded within 40 metres of the racing line. As the realignment of the race track brings sections of the western footpath of Fullarton Road within 40 metres of the racing line, there is a potential for pedestrians not attending the event to be exposed to noise levels in excess of 85 dB(A). Appropriate measures will be implemented to prevent people not attending the event from passing within 40 metres of the racing line. 4.2 Horse racing facility The proposed redevelopment of the Victoria Park Racecourse is expected to cause an increase in utilisation of the horse racing facility from six to more than 30 times per year. While noise levels during the events are expected to be similar to existing levels, the increased frequency of events is likely to increase the noise impact on nearby residences. Environmental noise levels affecting nearby residences during these events will be designed to comply with the 47 dB(A) daytime and 40 dB(A) night time limits prescribed by the INP. Based on the future site plans provided by KBR (drawing AES623-A-DWG-002), a preliminary assessment was carried out of the likely noise levels at the nearest sensitive receptors from PA systems at the facility. PA systems are expected to represent the dominant noise source during Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 8 operation of the horse racing facility. This assessment assumed that the speakers were located along the proposed horse racing track in front of the new grandstand, and were designed to achieve a noise level of 65 dB(A) at the grandstand. It was also assumed that isolated speakers were located around the track. The assessment predicted the following noise levels at the nearest sensitive receptors: 50 to 53 dB(A) at residences along East Terrace 40 to 45 dB(A) at residences to the east of Fullarton Road The levels at residences to the east of Fullarton Road are expected to be relatively insignificant compared to traffic noise and to have little or no noise impact. The levels at East Terrace residences are predicted to exceed the daytime Leq,15min limit of 47 dB(A). Night time use of the horse racing facilities is not expected. However, the noise levels presented above represent the predicted noise levels at the residences with the speakers operating constantly. It is not expected that the PA systems will be operating continuously for 15 minutes and the actual Leq,15min noise level is likely to be significantly lower than 50 to 53 dB(A). Additionally, it should be noted that this represents a conservative assessment as the speakers were assumed to have no directionality. During operation, it is likely that the majority of noise produced would be directed towards the grandstand and the residences in the direction of East Terrace would experience a lower noise level. Overall, future noise levels from the PA systems at the proposed horse racing facilities are likely to be similar to the noise levels from events at the existing facilities. Additionally, based on traffic data provided by the Adelaide City Council, the average daytime Leq,15hr road traffic noise at the East Terrace residences is expected to be approximately 55 dB(A). Relative to road traffic noise, the impact of noise from horse racing events is expected to be significantly lower. In order to reduce the noise impact of the redevelopment at residences along East Terrace, appropriate noise mitigation measures will be implemented during horse racing events. This will include directing PA systems away from residences, and directing spectators away from the residential areas. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 9 5.0 Conclusion We have undertaken a preliminary assessment of the noise, vibration and dust impact for the development application of a proposed development of the Victoria Park Racecourse, Adelaide, SA. The development is to comprise the demolition of existing buildings, the construction of a new grandstand, the realignment of the car race track and the construction of a new horse racing track. The Heritage Grandstand is to remain. The development is situated in the Adelaide City Council region and is in the ‘Eastern Park Lands Policy Area’, with potential impact on residences in the ‘East End Policy Area’ and residences in the Burnside City Council area east of Fullarton Road. Our assessment has been based on the requirements of the Adelaide (City) Development Plan for both of these zones, as well as relevant criteria for noise, vibration and dust emission: SA EPA Environment Protection (Industrial Noise) Policy 1994 Australian Standard 2670.2-1990 Evaluation of human exposure to whole-body vibration, Part 2: Continuous and shock induced vibration in buildings German Standard DIN 4150 - Part 3 - Structural Vibration in Buildings - Effects on Structures NEPC National Environment Protection Measure for Ambient Air Quality, 1998 NSW EPA Approved Methods and Guidance – For the Modelling and assessment of Air Pollutants (from stationary sources) in NSW, 2001 During construction, noise and vibration will be controlled through the preparation of a Noise and Vibration Management Plan. Vibration monitoring and flashing light alarms will be used to proactively manage vibration impacts upon the Heritage Grandstand during the construction phase. Dust emission will be managed through the application of appropriate mitigation methods such as the use of water carts and manned sprayers operating near equipment generating higher than typical levels of dust as necessary. Operational noise impact is expected to be significant during the Clipsal V8 Supercar race and, to a lesser extent, increased use of the horse racing facilities. The realignment of the car race track and demolition of existing buildings is predicted to increase noise levels by up to 7 dB(A) at residences east of Fullarton Road, and to reduce noise levels at residences along East Terrace by approximately 3 dB(A). Measures to prevent pedestrians passing within 40 metres of the realigned car race track can be used to ensure that people not attending the event are not exposed to noise levels in excess of the OH&S Leq,8hr limit of 85 dB(A). Use of the horse racing facilities is subject to a daytime Leq,15min limit of 47 dB(A) at nearby residences. It is expected that with appropriate design of the Public Address system and an acoustic assessment, the environmental noise levels at residences will be within these limits. With appropriate acoustic design, the proposed redevelopment of the Victoria Park Racecourse, Adelaide, is expected to comply with the noise, vibration and dust control requirements of the Adelaide (City) Development Plan, and with the relevant criteria presented. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 10 Appendix A: Nomenclature A-Weighting The “A” weighting scale is designed to adjust the absolute sound pressure levels to correspond to the subjective response of the human ear. dB(A) A-Weighted sound pressure level measured in decibels. LAeq,T Equivalent continuous noise level measured over a time period, T. This descriptor is used within the Environment Protection (Industrial Noise) Policy. PM10 Particulate matter less than 10 µm in aerodynamic equivalent diameter. Victoria Park Racecourse Redevelopment Development Application - Assessment of Noise, Vibration & Dust @BCL@28046C3D.DOC Revision 1 22 June 2007 Page 11