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Technical Note 007 Response to RFI

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Technical Note 007 Response to RFI GAS IMPORT JETTY AND PIPELINE PROJECT ENVIRONMENT EFFECTS STATEMENT INQUIRY AND ADVISORY COMMITTEE TECHNICAL NOTE TECHNICAL NOTE NUMBER: TN 007 DATE: 2 October 2020 LOCATION: Crib Point Jetty Works EES/MAP BOOK REFERENCE: Technical Report A Response to RFI 021 – Section 2.5: Chlorine and temperature SUBJECT: discharge conditions The documents attached to this technical note are those SUMMARY completed by CEE between 2014 and 2018 and referred to in the "Reference List" of Technical Report A. Provide links to the reports referenced in EES Technical Report REQUEST: A completed by CEE between 2014 to 2018 Annexure A-A. NOTE: 1. We understand this request to be referring to the CEE reports listed in the reference list to Technical Report A. Documents 2. The following documents are provided as attachments to this technical note: (a) CEE (2014a). North Arm Subtidal Seagrass and Water Quality Monitoring. Spatial variation in subtidal seagrass depth limits in Western Port, February 2014. Report to Port of Hastings Development Authority. (b) Appendix of CEE (2014a). North Arm Subtidal Seagrass and Water Quality Monitoring. Spatial variation in subtidal seagrass depth limits in Western Port, February 2014. Report to Port of Hastings Development Authority. (c) CEE (2014b). Port of Hastings Seagrass Monitoring Pilot Study. Report to Port of Hastings Development Authority. CEE Melbourne June 2014. (d) CEE (2017). Long Island point: Wastewater Discharge - AGL Gas Import Jetty and Pipeline Project. Report for AGL. (e) CEE (2018a). Plume Modelling of Discharge from LNG Facility at Crib Point, Western Port – AGL Gas Import Jetty and Pipeline Project. Report for AGL. (f) CEE (2018b). Chlorine in FSRU Seawater Processes – AGL Gas Import Jetty and Pipeline Project. Report for AGL. (g) CEE (2018c). Assessment of effects of cold-water discharge on marine ecosystem at Crib Point – AGL Gas Import Jetty and Pipeline Project. Report for AGL. (h) CEE (2018d). Modelling and Assessment of Biological Entrainment – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 1 (i) CEE (2018e). Marine Ecosystem Protected Matters – AGL Gas Import Jetty and Pipeline Project. Report for AGL. (j) CEE (2018f). Effects of LNG Facility on Sea Level and Seabed at Crib Point Jetty – AGL Gas Import Jetty and Pipeline Project. Report for AGL. NA CORRESPONDENCE: 10 Attachments. ATTACHMENTS: 1. CEE (2014a). North Arm Subtidal Seagrass and Water Quality Monitoring. Spatial variation in subtidal seagrass depth limits in Western Port, February 2014. Report to Port Of Hastings Development Authority. 2. Appendix of CEE (2014a). North Arm Subtidal Seagrass and Water Quality Monitoring. Spatial variation in subtidal seagrass depth limits in Western Port, February 2014. Report to Port of Hastings Development Authority. 3. CEE (2014b). Port of Hastings Seagrass Monitoring Pilot Study. Report to Port of Hastings Development Authority. CEE Melbourne June 2014. 4. CEE (2017). long Island point: Wastewater Discharge - AGL Gas Import Jetty and Pipeline Project. Report for AGL. 5. CEE (2018a). Plume Modelling of Discharge from LNG Facility at Crib Point, Western Port – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 6. CEE (2018b). Chlorine in FSRU Seawater Processes – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 7. CEE (2018c). Assessment of effects of cold-water discharge on marine ecosystem at Crib Point – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 8. CEE (2018d). Modelling and Assessment of Biological Entrainment – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 9. CEE (2018e). Marine Ecosystem Protected Matters – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 10. CEE (2018f). Effects of LNG Facility on Sea Level and Seabed at Crib Point Jetty – AGL Gas Import Jetty and Pipeline Project. Report for AGL. 2 Attachment 1 Prepared for: Port of Hastings Development Authority Port of Hastings Development Project North Arm Subtidal Seagrass and Water Quality Monitoring Spatial variation in subtidal seagrass depth limits February 2014 Spatial variation in subtidal seagrass depth limits in Western Port February 2014 Contents 1 Introduction 1 1.1 This document 1 2 Scope of Work 2 3 Purpose of task 2 4 Methods 3 4.1 Sites investigated 3 4.2 Subtidal seagrass lower depth limit 4 4.3 Transects 4 4.4 Light/CTD profiles 4 4.5 Seagrass taxonomy 11 4 Zostera Lower Depth Limit site results 12 4.6 Light attenuation 13 4.7 Maximum depth limits 14 4.8 Seabed slope 14 5 Transect descriptions 20 4.9 Charing Cross 20 4.10 Quail Island 22 4.11 The Bluff 23 4.12 North BlueScope 24 4.13 Long Island Point South 25 4.14 Middle Spit 26 4.14.1 Middle Spit North 26 4.14.2 Middle Spit South 27 4.14.3 North Arm channel mark No. 1 28 4.15 Chilcott Channel 29 4.16 Stony Point North 30 4.17 Tortoise Head South 31 4.18 Corinella 33 5 Zostera nigricaulis sample Morphometrics 34 6 Summary data interpretation and Observations 36 6.1 Lower depth limit of Zostera and determining factors 36 6.2 Most extensive subtidal seagrass 37 6.3 Light requirement of Zostera seagrass 37 6.4 Intertidal seagrass 38 7 Conclusion 40 8 References 41 9 Appendix 42 10 Appendix. Preliminary site information Report. February 2014 43 Spatial variation in subtidal seagrass depth limits, January 2014 ii Figures Figure 1 Major geographical segments and other features of Western Port .......................... 2 Figure 2 Key Maps ................................................................................................................ 3 Figure 3 Typical subtidal plants in Western Port .................................................................. 11 Figure 4. Plot of Secchi disk depth versus light attenuation coefficient ................................ 13 Figure 5 Depth limits for Zostera nigricaulis at sites around Western Port – January 2014 . 18 Figure 6 Light attenuation coefficients calculated during this investigation and EPA fixed sites ............................................................................................................................. 19 Figure 7 Bathymetry and aerial image (Feb 2013) of Charing Cross transects .................... 20 Figure 8 Charing Cross Transect 1 vegetation profile.......................................................... 21 Figure 9 Charing Cross Transect 2 vegetation profile.......................................................... 21 Figure 10 Bathymetry and aerial image of Quail Island transect .......................................... 22 Figure 11 Quail Island transect vegetation profile ................................................................ 22 Figure 12 Bathymetry and aerial image of The Bluff transect .............................................. 23 Figure 13 The Bluff transect vegetation profile .................................................................... 23 Figure 14 Bathymetry and aerial image of North BlueScope transect .................................. 24 Figure 15 North BlueScope transect vegetation profile ........................................................ 24 Figure 16 Bathymetry and aerial image of Long Island Point South transect ....................... 25 Figure 17 Long Island Point South transect vegetation profile ............................................. 25 Figure 18 Bathymetry and aerial image of Middle Spit North transect ................................. 26 Figure 19 Middle Spit North transect vegetation profile ....................................................... 26 Figure 20 Bathymetry and aerial image of Middle Spit South transect ................................. 27 Figure 21 Middle Spit South transect vegetation profile ....................................................... 27 Figure 22 Bathymetry and aerial image of North Arm Channel Mark No. 1 transect ............ 28 Figure 23 North Arm Channel Mark no. 1 transect vegetation profile .................................. 28 Figure 24 Bathymetry and aerial image of Chilcott Channel transect .................................. 29 Figure 25 Chilcott Channel transect vegetation profile ........................................................ 29 Figure 26 Bathymetry and aerial image of Stony Point North transect ................................. 30 Figure 27 Stony Point North transect vegetation profile ....................................................... 30 Figure 28 Bathymetry and aerial image of Tortoise Head South transects .......................... 31 Figure 29 Tortoise Head South transect 1 vegetation profile ............................................... 31 Figure 30 Tortoise Head South transect 2 vegetation profile ............................................... 32 Figure 31 Tortoise Head South transect 3 vegetation profile ............................................... 32 Figure 32 Bathymetry and aerial image of Corinella transect .............................................. 33 Figure 33 Corinella transect vegetation profile .................................................................... 33 Figure 34. Possible annual light range in north of Lower North Arm Western Port .............. 37 Figure 35. Infra red photograph of tidal divide, north of ay 1977/78 ..................................... 39 Tables Table 1 Summary of Zostera nigricaulis lower depth limit data ............................................ 12 Table 2. Zostera LDL site metadata, Western Port January 2014 ....................................... 15 Table 3 Preliminary seagrass morphology data..................................................................
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