Construction Noise and Vibration Management Plan

Transcription

1 Young to Wagga Wagga Looping Pipeline Stage 2 (Bethungra to Young) APT Management Services Pty Ltd Noise and Vibration Management Plan

2 Client: APT Management Services Pty Ltd ABN: Prepared by AECOM Australia Pty Ltd Level 2, 60 Marcus Clarke Street, Canberra ACT 2600, Australia T F ABN Job No.: AECOM in Australia and New Zealand is certified to the latest version of ISO9001, ISO14001, AS/NZS4801 and OHSAS AECOM Australia Pty Ltd (AECOM). All rights reserved. AECOM has prepared this document for the sole use of the Client and for a specific purpose, each as expressly stated in the document. No other party should rely on this document without the prior written consent of AECOM. AECOM undertakes no duty, nor accepts any responsibility, to any third party who may rely upon or use this document. This document has been prepared based on the Client s description of its requirements and AECOM s experience, having regard to assumptions that AECOM can reasonably be expected to make in accordance with sound professional principles. AECOM may also have relied upon information provided by the Client and other third parties to prepare this document, some of which may not have been verified. Subject to the above conditions, this document may be transmitted, reproduced or disseminated only in its entirety.

3 Quality Information (AECOM) Document Ref Date Prepared by Reviewed by Lauren Lambert and Patrick Martinez Gayle Greer and Guillaume Prudent-Richard Revision History Revision Revision Date Details Name/Position Authorised Signature 4-0 9/11/15 For submission to DP&E Guillaume Prudent- Richard Associate Director - Environment Document Control Document: The following table is to be updated with details of each revision of this document. Revised copies of this document to be provided to all relevant stakeholders and approval agencies. Revision and Approval History Revision Revision Date Details Name/Position Authorised Signature

4 Table of Contents Acronyms i 1.0 Background Introduction Purpose and Scope Objectives Document Structure Legislative and Regulatory Requirements Relevant Legislation State 3 Environmental Planning and Assessment Act Guidelines and Standards Conditions of Approval and Statement of Commitments Project Description Risk Assessment Evaluation and Assessment of Noise and Vibration Impacts Assessment Methodology Existing Environment Noise Management Levels Vibration Management Levels Potential Noise and Vibration Impacts Environmental Management Hours of Work Impulsive or Tonal Noise Emissions Permission for Varied Hours (Out of hours works) Noise and Vibration Management Objectives Noise Management Levels Maximum levels for Plant and Equipment Vibration Management Objectives Environmental Management Controls Roles and Responsibilities Training and Awareness Community and Stakeholder Consultation Monitoring and Reporting Monitoring and Reporting Schedule Attended noise monitoring procedure Monitoring of equipment procedure Equipment Attended noise monitoring schedule Reporting on attended noise monitoring Auditing Non-compliance and Corrective Action Complaints Management Sub-Plan Review Summary of Environmental Controls 22 Appendix A Glossary Appendix B Noise Contours and Receivers A B

5 i Acronyms ABL Assessment background level APA APA Group CEMP Environmental Management Plan CNVMP db Decibel db(a] A Weighted decibels DEC NSW Department of Environment and Conservation DECC NSW Department of Environment & Climate Change DECCW Department of Environment, Climate Change and Water DP&E NSW Department of Planning and Environment EPA NSW Environment Protection Authority EP&A Act Environmental Planning and Assessment Act EPL Environment Protection License f Frequency HDD Horizontal Directional Drilling HSEMS APA s Health and Safety Environmental Management System Hz Hertz ICNG Interim Noise Guideline INP Industrial Noise Policy MSP Moomba to Sydney Pipeline System POEO Act Protection of the Environment Operations Act 1997 RBL Rating background level ROW Right of Way VDV Vibration Dose Value

6 1 1.0 Background 1.1 Introduction In April 2013, the Minister for Planning and Infrastructure granted approval for the construction and operation of a new 18-inch (450 mm) natural gas pipeline from Young to Bethungra, NSW (approximately 70 km in length) within the easement of the existing pipeline which extends from Young to Wagga Wagga (the Project). The Project would connect to the Moomba to Sydney Pipeline System (MSP) mainline at its north east end in Young. The Project is Stage 2 of the duplication of Young to Wagga Wagga pipeline, with the first stage, Wagga Wagga to Bethungra, previously approved under Part 3A of the Environmental Planning and Assessment Act 1979 (EP&A Act) and constructed. The proponent of the Project is APA Group (APA), comprising the Australian Pipeline Trust and APT Investment Trust. East Australian Pipeline Limited, which is the holder of the Pipeline Licence for the Young to Wagga Wagga Pipeline (PL 19) is also a subsidiary of APA Group. 1.2 Purpose and Scope The project approval is subject to a number of conditions including the preparation and implementation of a Environmental Management Plan (CEMP). The CEMP must be approved by the Secretary of the Department of Environment and Planning (DP&E) (the Secretary) or their nominee prior to commencement of construction. In accordance with the Conditions of Project Approval, the CEMP shall include a Noise and Vibration Management Plan (CNVMP). This document addresses this requirement and is provided as one of a number of sub-plans to an overarching CEMP document. See Section 2.0 for more information on the CEMP structure. The CEMP and associated sub-plans form management guides that clearly identify required environmental management actions for easy reference by project personnel. The purpose of this CNVMP is to describe how APA will manage construction noise and vibration during the construction of the pipeline. The sub-plan has been developed to ensure the requirements of the project approval and associated environmental documentation requirements are achieved to ensure the successful delivery of the Project. This sub-plan is only applicable to the pre-construction and construction phase of the Project and does not include the management of operational noise and vibration. Noise and vibration from blasting activities during construction is also excluded from this sub-plan. Should blasting activities be required they will be subject to a separate Blasting Management Plan. The key components covered in this sub-plan include: - Identification of background noise levels and construction noise and vibration management criteria. - Evaluation and assessment of potential noise and vibration impacts on receptors. - Description of environmental management controls to mitigate potential noise and vibration impacts on receptors. - Procedures for monitoring and auditing of noise and vibration impacts against noise and vibration goals. - Procedures for the management of complaints and non-compliances. A description of acoustic terms used within this CNVMP is provided within Appendix A. 1.3 Objectives The objectives of the CNVMP are to: - Minimise unreasonable noise and vibration impacts on receptors. - Avoid structural damage to buildings as a result of construction vibration. - Comply with relevant construction noise and vibration management levels as described in Section Undertake active community consultation and maintain positive working relationships.

7 2 2.0 Document Structure The CNVMP forms a sub-plan of the overarching CEMP for the Project. An overview of the structure of the CEMP and sub-plans is illustrated in Figure 1. This sub-plan shall be reviewed and updated as necessary throughout the construction phase of the Project. The review process is detailed within Section 9.0. Revised copies of this document will be provided to all relevant stakeholders and approval agencies. Figure 1 Structure of CEMP and Sub-Plans

8 3 3.0 Legislative and Regulatory Requirements APA and the Contractor have an obligation to ensure that construction work complies with all relevant regulatory requirements and guidelines. All site employees and construction personnel will be made aware of environmental regulations and best industry practices as part of an environmental induction process and construction management system. The relevant legislation, policies and approvals are identified in the following sections. 3.1 Relevant Legislation State Environmental Planning and Assessment Act The Environmental Planning and Assessment Act 1979 (EP&A Act) is the overarching environmental planning and assessment legislation for the proper management, development and conservation of the State's natural and built environment. Part 3A of the EP&A Act provides an assessment and approval process for major projects. The Project is declared to be a major project under State Environmental Planning Policy (Major Development) 2005 (Major Projects SEPP) (Schedule 1, clause 26(a)) because it is development for the purpose of a pipeline in respect of which a license has been granted under the Pipelines Act The Project is therefore subject to Part 3A of the EP&A Act and the Minister for Planning is the determination authority. The existing pipeline licence for the Young to Wagga Wagga Pipeline (PL 19) requires a variation to address the proposed pipeline duplication (or looping). Protection of the Environment Operations Act The Protection of the Environment Operations Act 1997 (POEO Act) details offences and penalties for a range of environmental aspects, including noise, and sets out the duty to notify the Environment Protection Authority (EPA) of any actual or potential environmental harm. The Act also details scheduled activities that require an Environment Protection Licence (EPL). 3.2 Guidelines and Standards This sub-plan has been prepared in accordance with the following standards and guidelines: NSW Environment Protection Authority (EPA), Industrial Noise Policy (INP), January 2000 and relevant application notes, 2013 NSW Department of Environment, Climate Change and Water (DECCW), Road Noise Policy (RNP), 2011 NSW Department of Environment & Climate Change (DECC), Interim Noise Guideline (ICNG), NSW Department of Environment and Conservation (DEC), Assessing Vibration: A technical guideline (AVATG), 2006 Standards Australia AS (AS1055) - Description and Measurement of Environmental Noise, Parts 1, 2 and 3 Standards Australia AS IEC (AS61672) - Electro Acoustics - Sound Level Meters Specifications Standards Australia AS (AS2436) - Guide To Noise And Vibration Control On, Demolition And Maintenance Sites

9 4 3.3 Conditions of Approval and Statement of Commitments The following table lists the statutory conditions of approval, which are applicable to the content and scope of this sub-plan. Table 1 Minister's Conditions of Approval and Statement of Commitments Approval reference Commitment/requirement Minister s Conditions of Project Approval Sub-plan reference Hours B24 B24 a) B24 b) B25 B25 a) B25 b) B25 c) B26 B26 a) B26 b) B26 c) activities associated with the project (except as provided in Condition B25 and B26) shall be undertaken on a standard industry work cycle during the following standard daytime construction hours: 7:00am to 6:00pm daily for a maximum period of 28 days at a time, separated by a minimum respite period of nine days; and at no time on public holidays. The hours of construction specified under condition B24 may be varied with the prior written approval of the Director-General. Any request to alter the hours of construction shall be: considered on a case-by-case basis; accompanied by details of the nature and need for activities to be conducted during the varied construction hours and any other information necessary to reasonably determine that activities undertaken during the varied construction hours will not adversely impact on the acoustic amenity of receptors in the vicinity of the site; and commenced only affected residential receivers are informed of the timing and duration of work approved under this condition at least 48 hours before that work commences. Except as expressly permitted by an EPL, activities resulting in impulsive or tonal noise emission (such as rock blasting, pile driving) shall only be undertaken: Between the hours of 8:00 am to 5:00 pm Monday to Friday; Between the hours of 8:00 am to 1:00 pm Saturday; and In continuous blocks not exceeding three hours each with a minimum respite from those activities and works of not less than one hour between each block. Noise and Vibration Limits Section 6.1 Section Section B27 B28 The Project shall be constructed with the aim of achieving the construction noise management levels detailed in the Interim Noise Guideline (DECC, 2009). All feasible and reasonable noise mitigation measures shall be implemented and any activities that could exceed the construction noise management levels shall be identified and managed in accordance with the CEMP. The Project shall be constructed with the aim of achieving the following construction vibration goals for human exposure: the acceptable vibration values set out in the Environmental Noise Management Assessing Vibration: A Technical Guideline (Department of Environment and Conservation, 2006). Section and 6.3 Section and 6.3

10 5 Approval reference B29 B30 Commitment/requirement The Proponent shall ensure that air blast overpressure generated by blasting associated with the Project does not exceed the criteria specified in Table 1, when measured at the most affected residence or other sensitive receiver. Table 1 Airblast overpressure criteria Airblast overpressure Allowable exceedance (db(lin Peak)) 115 5% of total number of blasts over a 12 month period 120 Never Ground vibration generated by blasting associated with the Project does not exceed the criteria specified in Table 2, when measured at the most affected residence or other sensitive receiver. Table 2 Peak particle velocity criteria Peak Particle Allowable exceedance Velocity (mm/s) 5 5% of total number of blasts over a 12 month period 10 Never Environmental Management Plan C2 C2 d) As part of the Environmental Management Plan required under condition C1 of this approval, the Proponent shall prepare and implement the following: a to manage noise and vibration impacts during construction and to identify all feasible and reasonable noise and vibration mitigation measures. The Plan shall be developed in accordance with NSW Interim Noise Guidelines (DECC, July 2009) and shall include, but not necessarily be limited to: Sub-plan reference Blasting Management Plan (if blasting is required) Blasting Management Plan (if blasting is required) - This document C2 d) (i) details of all potentially noise-affected receivers; Appendix B C2 d) (ii) C2 d) (iii) C2 d) (iv) an analysis of all feasible mitigation measures to reduce construction noise and vibration impacts including the use of noise attenuation barriers, alternative construction methods and work practices where potential noise impacts exceed the relevant objectives; procedures for notifying residents of construction activities that are likely to affect their noise and vibration amenity; contingency plans to be implemented in the event of non-compliance and / or noise and vibration complaints; and Section 6.3 Section 6.6 Section 7.3 and 8.0. C2 d) (v) details of a contact person to follow up complaints. Section 6.4 Statement of Commitments NV1 noise and vibration management strategies will be outlined in the CEMP. and operation measures will include: - Liaising with community to advise on likely timing and duration of noisy activities. - Section Resolving complaints received from residents and landowners. Section Using noise abatement measures where reasonable and feasible. Section 6.3

11 6 4.0 Project Description The Project will involve the installation of a new 18-inch (450 mm) natural gas transmission looping pipeline between the townships of Young and Bethungra (see Figure 2). The new pipeline will be installed adjacent to an existing 12-inch (305 mm) pipeline over a distance of approximately 70 km, and will be constructed within the existing 20 m wide gas pipeline easement and an additional 10m of working space. The pipeline would be a buried, class 600 (10.2 MPa) gas transmission pipeline which would initially be operated at 8.5 MPa. The pipeline would be designed, constructed and operated in accordance with AS 2885 The Australian Pipeline Standard. The construction of the pipeline would require a number of activities to be undertaken sequentially along the length of the route. Typical equipment required for pipeline construction includes: bulldozers, loaders, graders, side-boom tractors, trucks, padding machines, excavators, wheel ditching machines, welding units and light vehicles. activities will be undertaken by a range of specialist construction personnel. The majority of the pipeline will be installed via the excavation of a trench, laying of the pipe and backfilling of the trench. Where required, other methods such as horizontal directional drilling (HDD) will be used for sections where minimal disturbance to significant features is required such as sealed roads or major waterways. of the proposed pipeline will involve clearing and grading the entire pipeline easement. Such clearing will result in total surface disturbance over the areas where it is employed, which will likely consist of the majority of the route. It should be noted that the study area has already been subject to such an impact when the original pipeline was constructed in 1980, and subsequently in 2006 when an optical fibre cable was constructed in part of the study area. Since 1980, the area has also been subject to ongoing maintenance activities, including vegetation clearing and maintenance in accordance with safety requirements for gas pipelines of this specification. A brief outline of the construction activities is provided below: - Establishment of a temporary construction depot, pipe storage area, temporary gateways, and security fencing - Clear and Grade: Clearance of vegetation and levelling for right of way (ROW). Graders, backhoes and bulldozers would be used for levelling. - Trenching: A wheel trencher, rock saw or excavator would be used to dig the trench in which the pipe would lie. This method is used everywhere except for major road and watercourse crossings where directional drilling would normally be employed. - Stringing and Bending: Laying out of the pipe adjacent to the trench in preparation for welding. Prior to welding, the pipes would be bent to match the required vertical/horizontal profile. - Welding, Inspection and Coating: Pipes would be welded in several segments, typically in one kilometre lengths. Following welding and inspection, the pipe would be cleaned by grit blasting and an external coating applied. - Lowering In: Lowering of the pipe into the trench using side-boom tractors. - Backfilling: The trench would be backfilled with screened trench spoil, which would sift around the pipe providing a stone free covering. The remaining subsoil would then be placed in the trench in layers (typically two layers) with compaction between each layer. - Hydrostatic testing: Large single volumes of water to be pumped into the pipe in sections and pressurised to a minimum of 125% of the maximum allowable operating pressure.

12 7 Figure 2 Project Location

13 8 5.0 Risk Assessment 5.1 Evaluation and Assessment of Noise and Vibration Impacts Assessment Methodology Potential construction noise and vibration impacts have been assessed using a quantitative approach. The assessment has identified potential sensitive receptors, likely noise levels and feasible and reasonable noise mitigation measures. The quantitative noise and vibration assessment was undertaken through the following steps: - Review of the proposed construction activities (e.g. clearing, trenching, drilling) to identify those which are likely to generate significant noise and vibration. The parameters taken into account include proposed techniques and equipment, hours of operation and duration of each phase. - Assessment of the potential noise and vibration impacts as a consequence of the identified construction activities. - Development of off-set distances for the proposed construction activities using criteria outlined in Interim Noise Guideline (ICNG) and other guideline documents. - Identification of sensitive receptors, such as residences and other noise sensitive receptors within off-set distances that could experience noise levels and vibration above recommended management levels. - Evaluation of feasible and reasonable noise and vibration mitigation measures Existing Environment The vast majority of the pipeline route is located in open countryside where the noise Rating Background Level (RBL) is likely to be around 30 db(a). The location of identified sensitive receptors in relation to the proposed pipeline route is illustrated in Error! Reference source not found.. Although the background noise levels may actually be less in some areas, the Industrial Noise Policy states that where the rating background level is found to be less than 30 db(a), the level used for assessment purposes is set to 30 db(a). This RBL has also been used for the suburban/urban areas as no direct monitoring of noise background level has been undertaken. A RBL of 30 db(a) is very conservative for suburban/urban environments Noise Management Levels The ICNG provides noise management levels for consideration in assessing noise impacts for a project and noise levels for different types of receptors (Table 2).

14 9 Table 2 Noise management level for residential and sensitive receivers (ICNG) Receptor Time when management level applies Rating Background Level (RBL) Management level LAeq (15 min) Standard construction hours 1 30 db(a) 40 db(a) (Noise affected / RBL + 10 db(a)) Residence Highly Noise Affected 2 N/A 75 db(a) (Highly noise affected) Out of hours 30 db(a) 35 db(a) (Noise affected / RBL + 5 db(a)) Sensitive Receivers Classrooms at schools and other educational institutions Internal noise level N/A 45 db(a) (Internal noise level) Hospital wards and operating theatres N/A 45 db(a) (Internal noise level) Places of worship Active recreation areas (e.g. sports) When properties are being used N/A N/A 45 db(a) (Internal noise level) 65 db(a) (External noise level) Passive recreation areas (e.g. N/A reading, meditation) 60 db (External noise level) Community Centre N/A Depends on the intended use of the centre. Refer to the recommended maximum internal levels in AS2107 for specific uses Vibration Management Levels The relevant standards/guidelines used for assessing construction vibration are summarised in Table 3. Table 3 Standards/guidelines used for assessing construction vibration Item Structural Damage Human Comfort (tactile vibration) Standard/Guideline DIN4150-Part 3:1999 Structural Vibration Part 3 Effects of vibration on structures NSW Department of Environment and Conservation (2006) document Assessing Vibration: A Technical Guideline 3 In the absence of Australian based vibration criteria for structural damage, German Standards and British Standards have been considered. DIN4150 structural damage criteria are more conservative (i.e. more onerous) than the British Standard BS7385-Part 2:1993 Evaluation and Measurement for Vibration in Buildings and have been adopted for this assessment. 1 Standard construction hours in the ICNG are weekdays 7am 6pm and Saturdays 8am-1pm, no work on Sundays or public holidays. 2 Highly Noise Affected level represents the point above which there may be strong community reaction to noise. This can happen at any time. 3 This document is based upon the guidelines contained in British Standard 6472:1992, Evaluation of human exposure to vibration in buildings (1-80 Hz). This British Standard was superseded in 2008 with BS :2008 Guide to evaluation of human exposure to vibration in buildings Part 1: Vibration sources other than blasting and the 1992 version of the Standard was withdrawn. Although a new version of BS 6472 has been published, the EPA still requires vibration to be assessed in accordance with the 1992 version of the Standard at this point in time.

15 Structural damage Structural damage ground vibration criteria are defined in terms of levels of vibration that would minimise the risk of damage to buildings and other structures. Most commonly specified safe structural vibration levels are designed to minimise the risk of threshold or cosmetic surface cracks and are set well below the levels that have the potential to cause damage to the main structure. Examples of threshold or cosmetic cracking include minor non-structural effects such as superficial cracking in cement render or plaster. Larger exceedances of structural damage criteria increase the risk of more significant damage to a building s underlying structure. Structural damage criteria are presented in German Standard DIN 4150-Part 3 in terms of recommended maximum levels of vibration that reduce the likelihood of structural damage caused by vibration. These levels are presented in Table 4. Receivers classified as Group 1, Group 2 and Group 3 have been identified as being potentially affected by construction vibration. It should be noted that the vibration criteria presented below are conservative. DIN 4150 states that: exceeding the values in table 1 (Table 4) does not necessarily lead to damage; should they be significantly exceeded, however, further investigations are necessary. Table 4 DIN4150 structural damage vibration criteria Guideline values for velocity in mm/s Group Type of structure Vibration at the foundation 1 H to 10 Hz 10 H to 50 Hz 50 H to 100 Hz Vibration at the horizontal plane of highest floor at all frequencies 1 Buildings used for commercial purposes, industrial buildings and buildings of similar design Dwellings and buildings of similar design and/or use Structures that, because of their particular sensitivity to vibration, cannot be classified under Group 1 or 2 and are of great intrinsic value (e.g. listed buildings under a preservation order) Human comfort In general, human response to vibration is a complex phenomenon. There are wide variations in vibration tolerance of humans. Accordingly, acceptance goals for human comfort are hard to define and quantify. Acceptable values of human exposure to vibration are primarily dependent on the activity taking place in the occupied space (e.g. workshop, office, or residence) and the character of vibration (e.g. continuous or intermittent). In addition, specific values are dependent upon social and cultural factors, psychological attitudes, expected interference with privacy, and ultimately the individual s perception. The procedure outlined in Assessing Vibration: A Technical Guideline has been used in this assessment. Disturbance caused by vibration will depend on its duration as well as its magnitude. This method involves the calculation of a Vibration Dose Value (VDV) which is used to evaluate the cumulative effects of bursts of intermittent vibration. Various studies have shown that VDV assessment methods far more accurately assess the level of disturbance than methods which assess the vibration magnitude only. The VDV is the fourth root of the integral of the fourth power of vibration with respect to time. The VDV represents an amount of vibration. In assessing the VDVs, criteria detailed in BS6472:1992 Guide to evaluation of human exposure to vibration in buildings (1 Hz to 80Hz) are used, however the base values and multiples are converted

16 11 into VDVs assuming constant levels over a 15 hour day and a 9 hour night. The resulting VDV criteria are shown in Table 5. Table 5 Acceptable vibration dose values for intermittent vibration (m/s 1.75 ) Location Critical areas (e.g. hospital operating theatres, precision laboratories) Daytime Night-time Preferred Maximum Preferred Maximum Residences Offices, schools, educational institutions and places of worship Workshops The guideline states: There is a low probability of adverse comment or disturbance to building occupants at vibration values below the preferred values. Adverse comment or complaints may be expected if vibration values approach the maximum values. Activities should be designed to meet the preferred values where an area is not already exposed to vibration. Where all feasible and reasonable measures have been applied, values up to the maximum range may be used if they can be justified. For values beyond the maximum value, the operator should negotiate directly with the affected community. Safe working distances for typical vibration inducing equipment are listed in Table 6 below. Table 6 Examples of safe working distances for typical vibration intensive plant Plant Rating/Description Safe Working Distance Cosmetic Damage Human Response < 50 kn (Typically 1-2 t) 5 m m < 100 kn (Typically 2-4 t) 6 m 20 m Vibratory Roller < 200 kn (Typically 4-6 t) 12 m 40 m < 300 kn (Typically 7-13 t) 15 m 100 m > 300kN (Typically t) 20 m 100 m > 300 kn (> 18 t) 25 m 100 m Small Hydraulic Hammer Medium Hydraulic Hammer Large Hydraulic Hammer Vibratory Pile Driver (300 kg 5-12 t excavator) 2 m 7 m (900 kg t excavator) 7 m 23 m (1,600 kg t excavator) 22 m 73 m Sheet piles 2 20 m 20 m Pile Boring 800 mm 2 m N/A Jackhammer Handheld 1 m nominal Avoid contact with structure

17 Potential Noise and Vibration Impacts Noise receptors have been identified using a quantitative approach, whereby likely noise levels during construction and offset distances were modelled, indicating how many receptors are located within each offset distance. Noise levels were modelled for the noisiest equipment to be used on site and for other equipment such as excavators and trenchers. A total of 179 residences have been identified as within a noise affected offset distance (i.e. would experience a noise level of between 40 db(a) to 75dB(A)). These have been identified in Appendix B. No residences have been identified within the highly noise affected offset distance (i.e. would experience a noise level of 75 db(a) or greater). No sensitive receivers have been identified within a noise affected distance. Due to the transient nature of the construction works, whereby construction activities move along the pipeline alignment as they progress, noise impacts on receptors will not be constant over the construction period and will rather be during short term, temporary periods. Traffic noise has not been assessed as it is expected that construction traffic is likely to be very low in volume. The expected vibration levels from normal construction activities would not cause structural damage to buildings. Furthermore, vibration levels at receptors are unlikely to cause adverse human response.

18 Environmental Management 6.1 Hours of Work In accordance with the Conditions of Project Approval, construction activities will be undertaken during the following standard daytime construction hours 4 : a) 7:00am to 6:00pm daily for a maximum period of 28 days at a time, separated by a minimum respite period of nine days; and b) at no time on public holidays, unless prior approval received from DP&E and works are carried out in accordance with the Out of Hours Work Protocol identified within the CEMP Impulsive or Tonal Noise Emissions In accordance with the Conditions of Project Approval, activities resulting in impulsive or tonal noise emission (such as rock blasting, pile driving) shall only be undertaken: a) between the hours of 8:00 am to 5:00 pm Monday to Friday; b) between the hours of 8:00 am to 1:00 pm Saturday; and c) in continuous blocks not exceeding three hours each with a minimum respite from those activities and works of not less than one hour between each block Permission for Varied Hours (Out of hours works) The hours of construction may be varied with the prior written approval of the Secretary. Any request to alter the hours of construction shall be: a) considered on a case-by-case basis; b) accompanied by details of the nature and need for activities to be conducted during the varied construction hours and any other information necessary to reasonably determine that activities undertaken during the varied construction hours will not adversely impact on the acoustic amenity of receptors in the vicinity of the site; and c) commenced only affected residential receivers are informed of the timing and duration of work approved under this condition at least 48 hours before that work commences. 6.2 Noise and Vibration Management Objectives Noise Management Levels The Project shall be constructed with the aim of achieving the construction noise management levels detailed in the ICNG, as detailed in Table 7 below. Table 7 Noise management level for residential and sensitive receivers (ICNG) Receptor Time when management level applies Rating Background Level (RBL) Management level LAeq (15 min) Standard construction hours 5 30 db(a) 40 db(a) (Noise affected / RBL + 10 db(a)) Residence Highly Noise Affected N/A 75 db(a) (Highly noise affected) Out of hours 30 db(a) 35 db(a) (Noise affected / RBL + 5 db(a)) 4 This does not apply in the event of a direction from police or other relevant authority for safety reasons, in an emergency to prevent loss of life or to prevent environmental harm. 5 Standard construction hours in the ICNG are weekdays 7am 6pm and Saturdays 8am-1pm, no work on Sundays or public holidays.

19 14 Receptor Time when management level applies Rating Background Level (RBL) Management level LAeq (15 min) Sensitive Receivers Classrooms at schools and other educational institutions Internal noise level N/A 45 db(a) (Internal noise level) Hospital wards and operating theatres N/A 45 db(a) (Internal noise level) Places of worship N/A 45 db(a) (Internal noise level) When properties are Active recreation areas (e.g. sports) N/A 65 db(a) (External noise level) being used Passive recreation areas (e.g. N/A 60 db (External noise level) reading, meditation) Community Centre Maximum levels for Plant and Equipment N/A Depends on the intended use of the centre. Refer to the recommended maximum internal levels in AS2107 for specific uses. All plant and equipment used throughout the works should have an operating sound power level less than or equal to those in Table 8. These sound power levels are largely based on information in AS Guide to Noise Control on, Maintenance and Demolition Sites. Table 8 Typical Constriction Equipment Sound Power Levels, db (A) Plant description L Aeq Sound Power Levels Range Rock Breaker 112 Piling Drilling 116 Pneumatic Jack Hammer 108 Mobile Crane 104 Scraper 109 Front End Loader 108 Pneumatic Hand Tools (general) 108 Bulldozer 109 Tracked Excavator 108 Grader 109 Vibratory Roller 110 Dump Trucks 105 Water Cart 100 Rollers 105 Concrete Pump 106 Backhoe 102

20 Vibration Management Objectives The Project shall be constructed with the aim of achieving the construction vibration goals as detailed in Table 4 and Table Environmental Management Controls The controls to be implemented during the construction of the project are provided in Table 9. Table 12 provides further detail with respect to timing and responsibility for each control, as well as monitoring and reporting requirements. Table 9 Control Ref # NV1 NV2 NV3 NV4 NV5 NV6 NV7 Environmental Management Controls Environmental Management Controls All potentially affected residences as identified in Error! Reference source not found. will be informed by letterbox drop of the construction works including working hours to be adhered to, and the level and duration of noise to expect during construction. All potentially affected residences as identified in Error! Reference source not found. will be kept informed of any significant changes to construction activities or if out of hours of work is required. Any complaints received related to noise or vibration will be dealt with in accordance with Section 7.3. All site personnel will be instructed during a general induction as to their responsibilities in minimising noise and adhering to the noise minimisation measures. Equipment operators are to be report any faulty equipment to Contractor Site Supervisor. Works will be undertaken during the hours of: a) 7:00am to 6:00pm daily for a maximum period of 28 days at a time, separated by a minimum respite period of nine days; and b) at no time on public holidays. Any works outside of these hours shall be governed by the approved Out of Hours Work Protocol. Activities resulting in impulsive or tonal noise emission (such as rock blasting, pile driving) shall only be undertaken: a) between the hours of 8:00 am to 5:00 pm Monday to Friday; b) between the hours of 8:00 am to 1:00 pm Saturday; and c) in continuous blocks not exceeding three hours each with a minimum respite from those activities and works of not less than one hour between each block. NV8 In the case of an activity that requires work to be undertaken outside the specified hours, written approval must be sought from the Secretary. Any request to alter the hours of construction shall be: a) considered on a case-by-case basis; b) accompanied by details of the nature and need for activities to be conducted during the varied construction hours and any other information necessary to reasonably determine that activities undertaken during the varied construction hours will not adversely impact on the acoustic amenity of receptors in the vicinity of the site; and c) commenced only affected residential receivers are informed of the timing and duration of work approved under this condition at least 48 hours before that work commences. NV9 The noise levels of plant and equipment must have operating Sound Power or Sound Pressure Levels compliant with the criteria in Table 8.

21 16 Control Ref # NV10 NV11 NV12 NV13 NV14 NV15 NV16 Environmental Management Controls Vibration intensive activities should not be located closer to sensitive receptors than the safe working distances presented in Table 6 Human response. equipment will be fitted with adequate noise and vibration control equipment where possible. Measures include earth moving equipment fitted with residential class mufflers, and acoustic enclosures for any diesel generators and/or air compressors. Any equipment not in use for extended periods during construction work will be switched off. All vehicles and equipment will be regularly serviced, as per manufactures instructions and maintained in proper working order. Ensure deliveries are within the standard hours of works Simultaneous operation of noisy plant will be avoided wherever practicable. Wherever practicable, noisy equipment will be: a) Positioned behind structures that act as barriers to identified receptors b) Positioned at the greatest distance from identified receptors c) Oriented to directed noise emissions away from identified receptors NV17 NV18 NV19 NV20 Quiet practices will be employed wherever practicable when operating equipment Any noise construction activities will be completed in the shortest time possible. There will be no swearing or unnecessary shouting or loud stereos/radios on site. There will be no dropping of materials from heights, throwing of metal items, or slamming of doors. 6.4 Roles and Responsibilities The overarching CEMP provides details of the roles and responsibilities relevant to the CEMP and all sub-plans. The roles and responsibilities relevant for only the CNVMP are provided below in Table 10 and are consistent with the overarching CEMP. Table 10 Roles and Responsibilities Role Responsibilities APA Project Manager - Overall implementation of the Noise and Vibration Management Plan - Authorise and confirm the implementation of mitigation measures Contractor Project Manager Independent Environmental Representative - Implement methodology for avoiding excessive noise emissions - Coordinate monitoring and compile reports - Maintain internal records of monitoring - Collate and maintain records of complaints, respond to complainant - Identify Non Conformances - Review and update the Noise Management Plan as required - Undertake audits to ensure implementation of the CNVMP - Communication with EPA, as required Contact Phone Number

22 Training and Awareness All Project personnel, subcontractors, consultants and visitors will receive inductions into APA s and the Contractor's environmental obligations prior to commencing on site. All environmental inductions will be conducted as part of APA s Health and Safety Environmental Management System (HSEMS). Project induction and training will fall under the following categories: - General project induction - Visitor induction - Job specific environmental training Information specific to construction noise and vibration will be included in the general project induction and will include: - All relevant project specific and standard noise and vibration mitigation measures; - Relevant licence and approval conditions; - Permissible hours of work; - Location of nearest receptors; - Designated loading/unloading areas and procedures; - Site opening/closing times (including deliveries); and - Environmental incident and complaint procedures. All inductions will be recorded in the training register held by the Contractor. 6.6 Community and Stakeholder Consultation This sub-plan has been prepared in accordance with the requirements of the Minister s Conditions of Approval and Statement of Commitments for the Project (Section 3.3). Prior to implementation of this sub-plan and commencement of construction, this document will have been reviewed by the DP&E and approved by the Secretary or his nominee prior to commencement of construction. At least 14 days prior to construction, all potentially affected residences, as identified in Appendix B will be informed by letterbox drop and/or of the construction works including working hours to be adhered to, and the level and duration of noise to expect during construction. They will also be informed if there are any changes to construction activities and timing, including out of hours work.

23 Monitoring and Reporting 7.1 Monitoring and Reporting Schedule Monitoring will be undertaken through daily and weekly inspections and may be undertaken by a variety of personnel including the Contractor, APA s environmental representative and third-party environmental inspectors. It is the Contractor Project Manager that is responsible for ensuring the scheduled monitoring is undertaken in accordance with this CNVMP. The inspectors will be required to report compliance to the CNVMP to the APA Project Manager, in the form of checklists. These checklists are provided as an appendix to the overarching CEMP. The Project Contractor will additionally prepare a weekly report, separate to the weekly inspection checklist, which will include a summary of the results of the daily and weekly inspections, results of the attended noise monitoring, and summary any complaints. More information on the weekly reporting requirements for the project as a whole is provided in the overarching CEMP. Table 12 lists all of the environmental controls for this CNVMP, along with associated measurement criteria, timing for monitoring and reporting, and the person responsible for the monitoring and reporting. The following sections provide details specific to attended noise monitoring which is part of the monitoring program for this CNVMP Attended noise monitoring procedure The measurements will be conducted in accordance with the procedures outlines in Australian Standard AS 1055 Acoustics Description and measurement of environmental noise and in accordance with methods outlined in the NSW Industrial Noise Policy (INP). The following points should be followed when conducting noise monitoring: - A field calibration should be conducted before and after measurements; - The sound level meters must be set to an A-weighting and Fast; - The sound level meters sample period should be set to 15 minutes; - The following descriptors should be measured as a minimum: L A1, L Aeq and L A90; and - Measurements should be conducted a minimum of 3 metres from the nearest façade and/or solid fence/wall. If it is not possible to do this, corrections for façade reflection should be applied to the measurement results Monitoring of equipment procedure In addition to the residential noise monitoring procedures described above, the following equipment measurements will be undertaken: - Noise emission levels of all critical items of mobile plant and equipment will be checked for compliance by the site environmental officer for compliance with noise limits appropriate to those items prior to the equipment going into regular service; - For equipment and mobile plant used for construction works, L Aeq measurements will be taken at an appropriate distance, normally 7m and converted to a Sound Power Level; - An Equipment Noise Certificate, presenting relevant sound levels of the equipment tested, will be issued by the Contractor s site environmental officer within the first week of the equipment commencing at the construction site. The equipment sound power levels will be compared to the levels contained in Table 8. If noise checks on any equipment result in a prediction of non-compliance, noise mitigation strategies to achieve compliance will be developed Equipment All acoustic instrumentation employed throughout the monitoring programme will comply with the requirements of AS IEC Electroacoustics - Sound level meters Specifications. All sound level meters must have current calibration certificate from a NATA accredited laboratory in accordance with NATA guidelines. Instrument calibration shall be checked before and after each measurement survey, with the variation in calibrated levels not exceeding ±0.5 db.

24 Attended noise monitoring schedule Table 11 below provides a preliminary monitoring schedule for construction. Table 11 noise monitoring schedule Monitoring Schedule During first month of construction During subsequent months of construction period Action Complete one round of operator-attended 15 minute noise monitoring on separate days at site boundaries and closest residences Carry out equipment noise level checks on all critical items of plant and issue Equipment Noise Certificates Carry out equipment noise level checks on any new (untested) items of critical plant and issue Equipment Noise Certificates Reporting Reporting as detailed in Section to be included in monthly report Reporting on attended noise monitoring The following information must be included in the weekly reports when applicable: - Field calibration results (before and after measurements) - Measurement times and dates - Qualitative description of the noise environment during the measurements - L A1, L Aeq and L A90 levels - Meteorological conditions during the measurements - Estimation of or recorded noise contribution from other major noise sources. The Contractor Project Manager shall establish and maintain a system of records which provides full documentation of all noise monitoring results, complaint handling and responses to non-compliances. The Contractor Project Manager shall establish and maintain procedures for the collection, indexing, filing, storage and maintenance of the records. 7.2 Auditing The Independent Environmental Representative will undertake monthly audits to ensure compliance to the CNVMP. This will involve checking the daily, weekly and monthly checklists have been completed and evaluation of compliance with the CNVMP. This includes analysis of the attended noise measurements against noise management objectives in 6.2. The Independent Environmental Representative will report the outcomes of the audit to the APA Project Manager. Any external auditing is to be undertaken in accordance with the Compliance Tracking Program. 7.3 Non-compliance and Corrective Action Non-compliances identified through the daily and weekly inspections should be responded to with a corrective action. This is the responsibility of the Contractor Project Manager. Corrective actions should be documented in the inspection checklist. If a non-compliance has been identified during monthly audits that has not been corrected, the Independent Environmental Representative will issue a non-conformance notification to the APA Project Manager. The APA Project Manager will issue a request for corrective action to the Contractor Project Manager who will action the request as appropriate and provide updates on progress in addressing the issue at contractor meetings or as requested by the APA Project Manager. The Contractor Project Manager is responsible for the initial reporting of significant non-compliances with this CEMP or relevant legislation to the APA Project Manager. The APA Senior Programme Manager will report such events to the relevant statutory authorities in accordance with legislative requirements.