EROSION & SEDIMENT CONTROL ENVIRONMENTAL CONTROL PLAN

Transcription

1 EROSION & SEDIMENT CONTROL ENVIRONMENTAL CONTROL PLAN DOCUMENT NO: BLB2-PLN-ECP-002 Distribution There are no restrictions on the distribution or circulation of this procedure within John Holland Group. Recommend Documents to be Read in Conjunction This management procedure should be read in conjunction with the Construction Environmental Management Plan (. BLB2-PLN-EMP-004), Water Quality ECP (BLB2-PLN-ECP-009), Acid Sulfate Soil ECP (BLB2-PLN-ECP- 001) and Contaminated Land ECP (BLB2-ECP-PLN-005). Drawings CI-DWG-0070 Rev 0 and CI-DWG-0071 Rev 0 by Worley Parsons should be used as indicative to the type and level of controls which will be used throughout the life of the project in a staged approach. Copy No. Uncontrolled Copy Authorised By: Date: T.O Reilly 12 th June, 2012 (Project Manager) Revisions Draft issues of this document shall be identified as Revision A, B, C etc. Upon initial issue (generally Contract Award) this shall be changed to a sequential number commencing at Revision 0. Revision numbers shall commence at Rev. 1, 2 etc.

2 DATE REV DETAILS SECTION PREPARED APPROVED 4/07/2011 A Draft All S.Gleeson-Willey 19/07/2011 B Revised according to SPC comment All S. Gleeson-Willey 25/07/ Submitted for SPC review All T.O Reilly 11/08/ Revised following SPC s review All S. Glesson-Wiley T.O Reilly 10/10/ Revised section , , , S Keomongkhoun T.O Reilly /10/ Revised following SPC s comments S Keomongkhoun T.O Reilly 18/05/ month review All S Keomongkhoun T.O Reilly 12/06/ Reviewed and revised following a JH audit All S. Keomongkhoun T.O Reilly BLB2-PLN-ECP-002- Rev.5 Page 2 of 8

3 1.0 Scope This procedure is applicable to all works undertaken as part of the Port Botany Bulk Liquids Berth 2, construct project for Sydney Ports Corporation 2.0 Objective To ensure that appropriate soil conservation practices (management of erosion and sedimentation) are planned and implemented and that storm water runoff is effectively controlled during construction. To minimise the potential for sediment loss from the project site To minimise the possibility of contamination of stormwater from contact with contaminated soil. To remove suspended sediments from runoff water prior to discharge to Botany Bay. To minimise the risk of increased erosion and/or sediment deposition on the surrounding environment To appropriately plan soil management at site to prevent erosion and sedimentation from leaving the site. 3.0 References Federal Legislation State legislation Local Government Laws Standards / Codes 1. NA 1. Managing Urban Stormwater: Soil and Construction, Landcom 2004 Blue Book 2. AUSPEC C211, Australia and New Zealand Guidelines for Fresh and Marine Water Quality, 2000, Natural Resource Management Ministerial Council 4. AS/NZS :1998 Water quality Sampling Guidelines on the design of sampling programs, sampling techniques and the preservation and handling of samples 5. AS/NZS :1998 Water quality Sampling Guidance of sampling from marine waters 6. Environmental Guidelines: Assessment, Classification & Management of Liquid & Non-liquid Wastes, Department of Environment, Climate Change and Water Other Documentation 1. Environmental Protection & Biodiversity Conservation Act Protection of the Environmental Operations Act, Soil Conservation Act Native Vegetation Act Environmentally Hazardous Chemicals Act, Water Management Act, Fisheries Management Act Construction Environmental Management Plan 2. Contaminated Land ECP 3. Water Quality ECP 4. Acid Sulfate Soil ECP 5. Drawings CI- DWG-0070 Rev 0 and CI-DWG Rev 0 by Worley Parsons (indicative) 6. WMP App 1 IE Aust Guidelines Drainage Control Techniques 7. WMP r0-03 Water Pollution, Erosion and Sediment Control Doc No: BLB2-PLN-ECP-002- Rev.5 Page 3 of 8

4 7. AS4482.1:2005-Guideline to the investigation of sites with potentially contaminated soils Non-volatile and semi-volatile compounds. 8. AS4482.2:1999-Guide to the investigation of sites with potentially contaminated soils Volatile substances. 4.0 General 4.1 Performance Criteria: 1. Effective minimal soil erosion as a result of construction activities 2. No sedimentation of Port Botany or local drains shall occur as a result of land based construction activities 3. Installation of controls in accordance with this ECP and guideline requirements including AUSPEC C211 and Landcom Blue Book, Take all reasonable and practical measure to manage and mitigate the impacts of soil erosion during construction activities. 5. No complaints relating to erosion or sedimentation. 6. Contaminants, including sediments and litter, that could cause adverse environmental impact to surface waters are not released as a consequence of construction, construction vehicle movements or spoil placement. 7. No exceedence of water quality objectives. 8. No egress of sediment outside the silt curtain during piling activities. 9. Capture, containment and treatment (where applicable) of groundwater collected in excavations during construction 4.2 Definitions & Abbreviations: ASS Acid Sulfate Soil E&SC ECP Environmental Control Plan PASS Potential Acid Sulfate Soils ASS Acid Sulfate Soils SPC Sydney Ports Corporation Project Environmental Representative REM Regional Environment Manager PM Project Manager SEP Site Environmental Plan AMS Activity Method Statement WRA Workplace Risk Assessment 5.0 Management of Actions No Actions Required Staff Responsible When Design & Planning 1. Develop a site specific Site Environmental Plan for areas considered to be environmental high risk prior to works commencing. / Supervisor Prior to start of works Doc No: BLB2-PLN-ECP-002- Rev.5 Page 4 of 8

5 2. Workplace clearing shall be planned prior to clearing and construction Project Manager / Prior to start of works All project personnel shall be made aware of site specific erosion & sediment controls and the continuous implementation and maintenance required The risks associated with the management of Erosion & Sedimentation will be identified and mitigation controls elected in accordance with John Holland s Managing Safety, Quality and Environmental Risks (JHG ). A Site Environmental Plan (SEP) is to be developed, implemented, and communicated including the elected mitigation controls and the procedural actions dictated in this management plan. / supervisor / Project Manager Prior to start of works 5. The design and installation of required erosion and sediment control devices as per the Landcom Blue Book, Supervisor / 6. Control practices for erosion and sediment control should be determined by considering: a. Local climatic conditions and seasonal variations b. Soil types and condition c. Local hydrology affecting the construction zone d. Local drainage, including temporary and overland flow paths. 7. Planning of works and controls shall take into consideration PASS and ASS within the work areas. The location of soil samples for classification shall be identified as per advice.. / Foreman / supervisor 8. Sediment controls (basins, catch drains etc) will be designed to provide adequate bunding of spoil placement areas to prevent surface run-off entering nearby stormwater drains and waterways without treatment. These will be implemented according to Landcom Blue Book specifications according to a 10-year ARI. Project Manager / Pre-clearing & pre-construction 9. Sediment control devices (e.g. fences) are to be constructed and maintain around the perimeter (on the low side where practical) of area of excavation prior to any surface disturbance. Supervisor / Prior to start of works Disturbances to the site due to clearing will be limited to the construction areas; site facilities (approved areas i.e. offices, stores, receiving areas); and access tracks. The establishment of restricted access/egress points from the site will be conducted by installing suitable stabilise points with compact material, and if required consideration for a rumble grid and/or wheel wash down areas prior to construction. General site requirements during construction Erosion and sediment controls decisions shall be made to encompass reasonable and practical prevention, and will consider the receiving environment, water quality objectives, quality and quantity of water, location and accessibility, and other requirements. Foreman / Supervisor Project Manager / Project Engineer Doc No: BLB2-PLN-ECP-002- Rev.5 Page 5 of 8

6 13. The will provide direction for the location, installation, maintenance and removal of erosion control devices in accordance with this ECP, associated site plans and the CEMP. The will inspect erosion control devices to ensure that are installed to a suitable standard. / Supervisor 14. Deviations from this ECP are required to be approved by the by on-site discussion, agreed and in writing. 15. Areas susceptible to erosion shall be identified by the and appropriate remediation measures implemented in placed. / Supervisor 16. Sediment controls shall be maintained regularly and controls replaced immediately when damaged. Sediment shall be removed from all sediment controls where the capacity of the sediment control becomes less than 60% Water hoses will be utilised to wash off mud from vehicles prior to entering onto public roads. A road sweeper or manually brooming the area will be used to remove mud from roadways. Retain grass and/or other vegetation wherever possible on the down slope side of the site. This will enhance the natural filtering of sediment and reduce erosion. No clearing will be allowed outside the limit of the works. The boundary of works will be marked on the SEP. / / Supervisor / Plant Operator 19. Suppress earthworks, access tracks and other exposed areas in the vicinity of receptors with water on dry windy days to minimise dust and soil erosion. Supervisor 20. Waterway works All activities undertaken in or over a waterbody shall be in consultation and with approval from the applicable authorities (Sydney Ports Corporation). These activities shall comply with the guidelines issued under the Works over Water Permit and all relevant regulations updates. 21. All waterway protection controls must be implemented and functional prior to the commencement of other works. Project Manager / 22. Work affecting waterways should be scheduled according to tides and avoided after and during rainfall events where practical. Project Manager / 23. A silt curtain shall be installed prior to any drilling and excavation works and monitored for any sediment plume breakthrough in accordance with the water quality objectives. Project Manager / Plant movement and access 24. Vehicles will observe and follow the designated speed limit whilst on site, and remain to the designated roadways All personnel 25. Vehicles leaving all unsealed construction sites will pass over an area that is stabilised with compacted material (i.e. DGB20) to prevent soil and mud being spread on public road surfaces and nearby waterways. Spoil, mud or the like split into roads to be removed within a reasonable timeframe. Project Manager Doc No: BLB2-PLN-ECP-002- Rev.5 Page 6 of 8

7 Keep vehicles / machinery / plant equipment to access roads at all times and park vehicles on designated hard standing zones. Access roads to be clearly marked using star pickets, wire tape or flagging. Location of access road to be marked on site plans. Storing Materials Sediment controls (basins, check dams etc) will be designed to provide adequate bunding of spoil placement areas to prevent surface run-off entering nearby stormwater drains and waterways without treatment during inundation by flood waters in a 1 in 10 year design flood event. Foreman / Supervisor / all Personnel Project Manager 28. Spoil material to be stored in accordance with requirements included in the Water Management ECP. Project Manager 29. Relocate topsoil in a separate stockpile from any subsoil material Uncontaminated sediment removed from erosion and sediment control devices will be stockpiled and reused in areas of the site requiring landscaping, or removed off site with other stockpiled soil. Dewatering & Discharge Dewatering of accumulated water in pits trenches or other excavations will be in accordance with dewatering trigger values from the Water Management ECP, and shall include the treatment of water where discharge values are not met. Rehabilitation & Demobilisation Foreman / Supervisor / Foreman / Supervisor / 32. Erosion controls shall remain in place until 70 % or more of natural ground cover has recovered 33. All cleared sites will be restored as soon as possible following completion Monitoring No Monitoring Required Staff Responsible When 1. General observations for the daily management of erosion and sediment control shall be undertaken using the Weekly Environmental Inspection Checklist. 2. All drains and other water and drainage management facilities shall be regularly inspected and maintained as required All water and drainage management facilities shall be regularly inspected and reviewed for adequacy having regard for changing circumstances. Visual water quality monitoring shall be conducted daily during works affecting Botany Bay. Where necessary, water samples will be collected and tested on both the construction and Port side of the silt curtain, and compared against the WQOs and base line samples collected prior to marine works commencing. Parameters recorded during the monitoring event will include ph, Turbidity, Total Suspended Solids (as required in accordance with section 5.1 of the Water Quality ECP) and visual observations for hydrocarbon slicks. Water testing frequency will be reassessed once ¼ of piling activities are complete. During works Doc No: BLB2-PLN-ECP-002- Rev.5 Page 7 of 8

8 The integrity and correct functioning of drains and silt traps will be inspected and maintained at least fortnightly and during/after significant rainfall event by the. Observations and corrective actions will be recorded on the Weekly 5. Environment Inspection Checklist. Works may also be postponed at the construction Manager s discretion until further notice to prevent damage to the project site, wider marine and terrestrial environment and associated properties Reporting / CM Weekly / Fortnightly /During/ After significant rainfall events No Reporting Required Staff Responsible When 1. All complaints / incidents regarding erosion and sediment control shall be reported to the. All staff Following complaint / incident 2. The will investigate all incidents and report findings to the PM and Client. Environmental Incident reports shall be completed and forwarded to the Project Manager and REM. All times 3. Details of Erosion and Sediment control management including incidents and routine monitoring will be recorded on the Weekly Environment Inspection Checklist.. 4. The will ensure all incidents are reported to Client as per contract specifications. 6.0 Suggested Corrective Actions Problem Failure of erosion and sediment controls Inappropriate methods Insufficient maintenance Sustained exceedence of water quality objectives Erosion or sedimentation of contamination and/or acid sulfate soils Suggested Corrective Action Stop work (on Project Managers discretion) Repair or replace controls Clean up or rehabilitate any impacts Investigate reason for failure Evaluate failure, investigate alternative controls, site, soils and required water quality levels. Review site environmental plan and install appropriate controls/structures. Evaluate alternative controls, site, soils and required water qualities levels and implement correct methods appropriately. Repair/reinstate Review maintenance schedule, staff responsible and resources. Investigate and identify potential sources causing the exceedence Control the source Clean up or rehabilitate any impacts Implement appropriate controls Review construction methods, control effectiveness and device design. Report exceedence to Client. Stop work (on Project Managers discretion) Install additional controls if required Follow Acid Sulfate Soil ECP or contaminated land ECP. Doc No: BLB2-PLN-ECP-002- Rev.5 Page 8 of 8