Conceptual Site Model Report

A Conceptual Site Model (CSM) was developed for the Botany Groundwater Cleanup Project, and other current contamination projects at Botany Industrial Park (BIP). The objective of the CSM is to summarise and encapsulate pertinent information derived from the many studies undertaken at BIP and surrounding areas, including:

• the history of industrial activity and land development at BIP and surrounding properties, including potentially contaminating activities and land uses;
• the progression and scope of investigation and remedial works undertaken by Orica and its predecessor ICIA associated with the Botany Groundwater Cleanup Project;
• the environmental setting at BIP and surrounding affected properties;
• the inferred sources, nature and extent of contamination, including the various media affected by the contamination;
• the mechanisms for transport and attenuation of the contaminants, and exposure of identified receptors to the contamination;
• the potential health and environmental risks which the identified contamination is inferred to pose; and
• effects of current remedial practices, and the results of previous remediation work and trials.

Since the main contamination migration and exposure issues associated with the BIP are related to groundwater, the CSM is primarily a hydrogeological document. However, as indicated above, summary data and relevant information are also included for soil, surface water, sediment, biota and vapour phase contamination.

Conceptual Site Model - Botany - 23 Nov 07			Size
Main Report			899 KB
Figures
		Figure 2.1: Site Location	834 KB
		Figure 2.2: Subdivision/Ownership of BIP and Plant Locations	1.5 MB
		Figure 2.3: Surrounding Land Use	203 KB
		Figure 2.4: Bundled Piezometer, Monitoring and Extraction Well Locations	1.1 MB
		Figure 2.5: Historical Excavation and Drainage Features - Southlands	164 KB
		Figure 3.1: Local Area Surface Topography	305 KB
		Figure 3.2: Aerial Extent of Botany Basin	183 KB
		Figure 3.3: Contours Showing Elevation of Bedrock Surface	425 KB
		Figure 3.4: Locations of Geological Cross Sections	107 KB
		Figure 3.5: Geological Cross Section A - A', BIP Line - 1st Street	749 KB
		Figure 3.6: Geological Cross Section B - B', BIP Line - 2nd Street	496 KB
		Figure 3.7: Geological Cross Section C - C', PCA Line	800 KB
		Figure 3.8: Geological Cross Section D - D', SCA Line	604 KB
		Figure 3.9: Geological Cross Section E - E'	207 KB
		Figure 3.10: Geological Cross Section F - F'	222 KB
		Figure 3.11: Geological Cross Section G - G'	213 KB
		Figure 3.12: Distribution of K Values: Layer 1	110 KB
		Figure 3.13: Distribution of K Values: Layer 2a	114 KB
		Figure 3.14: Distribution of K Values: Layer 2b	114 KB
		Figure 3.15: Distribution of K Values: Layer 2c	115 KB
		Figure 3.16: Shallow Aquifer Water Table Elevation Contours Pre-GTP Extraction (Oct 04)	550 KB
		Figure 3.17: Deep Aquifer Potentiometric Head Elevation Contours Pre-GTP Extraction (Oct 04)	551 KB
		Figure 3.18: Shallow Aquifer Water Table Elevation Contours Under GTP Extraction (Jun 07)	365 KB
		Figure 3.19: Deep Aquifer Potentiometric Head Elevation Under GTP Extraction (Jun 07)	368 KB
		Figure 3.20A: Hydraulic Cross Section A-A', BIP Line, 1st Street (Jun 07)	848 KB
		Figure 3.20B: Hydraulic Cross Section B-B', BIP Line, 2nd Street (Jun 07)	538 KB
		Figure 3.21: Hydraulic Cross Section C-C', PCA Line (Jun 07)	863 KB
		Figure 3.22: Hydraulic Cross Section D-D', SCA Line (Jun 07)	698 KB
		Figure 4.1: DNAPL Sources, Inferred Source Areas and Plume Axes (Pre-Hydraulic Containment)	211 KB
		Figure 4.2: Inferred Distribution of CHCs - Central Plume Source Area (H-H') - 2005	812 KB
		Figure 4.3: Total Percentage Solubility of CHCs - S2 and S3 Source Areas (I-I') - 2005	563 KB
		Figure 4.4: Total Percentage Solubility of CHCs - S1 Source Areas (J-J') - 2005	405 KB
		Figure 4.5: Distribution of 1.2-Dichloroethane (EDC) - Deep Aquifer - Sep 2006	297 KB
		Figure 4.6: Distribution of Tetrachloroethene (PCE) - Deep Aquifer - Sep 2006	235 KB
		Figure 4.7: Distribution of Trichloroethene (TCE) - Deep Aquifer - Sep 2006	234 KB
		Figure 4.8: Distribution of Vinyl Chloride (VC) - Deep Aquifer - Sep 2006	244 KB
		Figure 4.9: Distribution of Tetrachloride (CTC) - Deep Aquifer - Sep 2006	241 KB
		Figure 4.10: Distribution of Chloroform (CFM) - Deep Aquifer - Sep 2006	230 KB
		Figure 4.11A: Geochemical Cross Section A-A' - BIP 1st Street Hydraulic Containment Line - June 2005	2 MB
		Figure 4.11B: Geochemical Cross Section B-B' - BIP 2nd Street Hydraulic Containment Line - June 2005	1.2 MB
		Figure 4.12: Geochemical Cross Section C-C' - PCA Hydraulic Containment Line - June 2005	3.5 MB
		Figure 4.13A: Geochemical Cross Section E-E', September 2006	330 KB
		Figure 4.13B: Geochemical Cross Section E-E', September 2006	334 KB
		Figure 4.14A: Geochemical Cross Section F-F', September 2006	405 KB
		Figure 4.14B: Geochemical Cross Section F-F', September 2006	408 KB
		Figure 4.15A: Geochemical Cross Section D-D' - SCA Hydraulic Containment Line - September 2005	846 KB
		Figure 4.15B: Geochemical Cross Section D-D' - SCA Hydraulic Containment Line - September 2005	863 KB
		Figure 4.15C: Geochemical Cross Section D-D' - SCA Hydraulic Containment Line - September 2005	850 KB
		Figure 4.15D: Geochemical Cross Section D-D' - SCA Hydraulic Containment Line - September 2005	855 KB
		Figure 4.16: Dissolved Mercury Concentrations - Layer 1, May 2007	639 KB
		Figure 4.17: Dissolved Mercury Concentrations - Layer 2A/2B, May 2007	631 KB
		Figure 4.18: Dissolved Mercury Concentrations - Layer 2C/3, May 2007	646 KB
		Figure 4.19: Groundwater pH - Layer 1, May 2007	633 KB
		Figure 4.20: Groundwater pH - Layer 2A/2B, May 2007	666 KB
		Figure 4.21: Groundwater Electrical Conductivity - Layer 2A/2B, May 2007	667 KB
		Figure 4.22: Groundwater Electrical Conductivity - Layer 2C/3, May 2007	672 KB
		Figure 4.23: Post GTP Startup Aquifer Zones	322 KB
		Figure 4.24: Distribution of Tetrachloroethene and Trichloroethene - Intertidal Discharge Zone - Penrhyn Estuary - March 2007	276 KB
		Figure 4.25: Distribution of 1,2-Dichloroethane and Vinyl Chloride - Intertidal Discharge Zone - Penrhyn Estuary - March 2007	279 KB
		Figure 4.26: Distribution of Chloroform - Intertidal Discharge Zone - Penrhyn Estuary - March 2007	194 KB
		Figure 6.1: Location of PSRIB	1.6 MB
		Figure 6.2: Location of Bioremediation Trials	498 KB
		Figure 6.3: Location of GTP Pipelines	189 KB
		Figure 6.4: Layout of GTP	639 KB
		Figure 6.5: Location of Settlement Plates	1.1 MB
		Figure 6.6: Layout of DNAPL Thermal Treatment Field Trial	36 KB
		Figure 7.1: Conceptual Hydrogeochemical Cross Section - Pre-Pumping Conditions	372 KB
		Figure 7.2: Conceptual Hydrogeochemical Cross Section - Pumping Conditions	416 KB
Appendices
A		Historical BIP Plant Locations	247 KB
B		Historical Products Manufactured at BIP	56 KB
C		Industrial History of BIP	68 KB
D		Industrial History of Area Surrounding BIP	488 KB
E		Notice of Clean Up Actions (Consolidated)	354 KB
F		Areas of Restricted Groundwater Usage in Botany Basin	797 KB
G		Selected Figures from Stage 1 Investigation	213 KB
H		Selected Figures from Stage 2 Investigation	1.2 MB
I		Selected Figures from Stage 3 Investigation	786 KB
J		Licensed Bore Locations in model Area	614 KB
K		Water levels Near BIP: 1960s and 1980	499 KB
L		Historical Interaction between Springvale Drain and Shallow Groundwater	201 KB
M		Predicted Water Table and Potentiometric Head Contours during Pumping	145 KB
N		Conceptual Model of DNAPL Behaviour	513 KB
O		Properties of Chemical and Waste Process Streams, and DNAPLs	176 KB
P		Pipe Plots	518 KB
Q		CHC Transformation Pathways	125 KB