Within Report Text
Within Appendix I
Hakea longiflora (P3) (Photo: DEC 2013a)
Within Appendix L
Within Appendix U
VT 1 (Quadrat NEW109) (Photo: Woodman Environmental)
VT 2 (Quadrat NEW006) (Photo: Woodman Environmental)
VT 3 (Quadrat NEW058) (Photo: Woodman Environmental)
Alternative of VT 3 (Quadrat NEW277) (Photo: Woodman Environmental)
VT 4 (Quadrat NEW267) (Photo: Woodman Environmental)
VT 5 (Quadrat NEW274) (Photo: Woodman Environmental)
VT 6 (Quadrat NEW251) (Photo: Woodman Environmental)
VT 7 on Lateritic Soils (Quadrat NEW271) (Photo: Woodman Environmental)
VT 7 on Sandy Soils (Quadrat NEW273) (Photo: Woodman Environmental)
VT 8 (Quadrat NEW183) (Photo: Woodman Environmental)
VT 9a (Quadrat NEW116) (Photo: Woodman Environmental)
VT 9b (Quadrat NEW206) (Photo: Woodman Environmental)
VT 10 (Quadrat COOL051) (Photo: Woodman Environmental)
VT 11 (Quadrat NEW056) (Photo: Woodman Environmental)
VT 12 (Quadrat NQ01) (Photo: Woodman Environmental)
VT 13 (Quadrat NEW040) (Photo: Woodman Environmental)
VT 14 (Quadrat NEW094) (Photo: Woodman Environmental)
VT 15 Eucalypt Woodland on Low Rises (Quadrat NEW170) (Photo: Woodman
VT 15 Allocasuarina lehmanniana Shrubland on Periphery of Claypans
CM05) (Photo: Woodman Environmental)
VT 16 (Quadrat NEW278) (Photo: Woodman Environmental)
VT 17 (Quadrat NEW104) (Photo: Woodman Environmental)
VT 18 Low Shrubland Form (Quadrat NEW184) (Photo: Woodman
VT 18 Woodland Form (Quadrat NEW069) (Photo: Woodman Environmental)
Tronox Management Pty Ltd (Tronox) is proposing to expand its current mining operations to
from the Woolka Road deposits. This proposal is being assessed by the way of a Public
Environmental Review (PER). Tronox commissioned Woodman Environmental Consulting
Pty Ltd (Woodman Environmental) to conduct a Level 2 flora and vegetation survey as
defined by the Environmental Protection Authority (EPA) Guidance Statement No. 51 (EPA
2004), to support an impact assessment under the Environmental Protection Act 1986 for the
proposed mining operation.
A method statement was prepared by Woodman Environmental (2012a) to provide a guide in
with Tronox’s proposed mining activities at Cooljarloo West. This report comprises a
baseline flora and vegetation study over the Cooljarloo West Study Area. The objective of
the report is to provide a detailed description of the flora and vegetation of the Study Area and
inform the definition and quantification of potential impacts of the project on these
The study comprised floristic assessment of the majority of the Study Area during Spring
were also incorporated into the study to provide a more complete species list, larger area of
vegetation mapping and understanding of conservation significant flora in the Study Area.
This study identified total of 1156 discrete vascular flora taxa and 1 putative hybrid have been
genera. This includes 1063 native taxa, and 93 introduced (weed) taxa. A total of 67 discrete
conservation significant flora taxa (CS flora taxa) have been recorded from within the Study
Area during both the 2012 and historical surveys, including four Threatened (DRF) taxa as
listed by DPaW (Strijk 2013; DPaW 2013a):
Anigozanthos viridis subsp. terraspectans
The local populations of six of these CS flora taxa were ranked as being of High regional
Stylidium aceratum (P2)
A total of 93 introduced taxa are known from the Study Area, of which two (Echium
Pests under the Biosecurity Management Act 2007 (BAM Act).
The majority of the Study Area consists of large areas of intact native vegetation and was
(primarily historical drilling lines and tracks), with minor non-invasive introduced taxa
present. Wetland areas appear to be more degraded than vegetation on other landforms in the
Study Area owing to their moister nature favouring weed establishment, as well as proximity
to neighbouring cleared agricultural areas.
A total of 18 Vegetation Types (VTs) (including one VT being split into two subgroups),
Supergroup 1 comprises of VTs 1 – 16, and consisted of a variety of structural types and
including wetland habitats, other areas of higher moisture retention (soils with clay content or
impeding layer) or areas underlain by limestone. VTs forming Supergroup 1 were mapped
over 26 % of the Study Area.
Supergroup 2 comprises of VTs 17 and 18 and occupies approximately 66 % of the Study
undulating plains and dunes of deeper sand. VTs within Super-group 2 generally grouped
together due to the presence of taxa which typically inhabit dry sandy soils, and was mapped
in areas from open depressions (not water gaining), plains, and lowerslopes through to
upperslopes and dune crests.
The local significance of all VTs were ranked Moderate, High or Very High, based on their
flora taxa. The local conservation significance of the majority of vegetation within the Study
Area was ranked Moderate (78.1 % of the Study Area, VTs 1, 17 and 18); 11.0 % of the Study
Area was ranked High (VTs 2, 3, 5, 7, 8, 11, 13 and 15); and 3.2 % of the Study Area was
ranked Very High (VTs 4, 6, 9a, 9b, 10, 12, 14, 16).
No Threatened Ecological Communities (TECs) or Priority Ecological Communities (PECs)
and Biodiversity Conservation Act (1999) (EPBC Act) are known from the Study Area, and
the VTs mapped within the Study Area are not representative of any listed TECs or PECs.
In the absence of a regional quadrat dataset covering the Study Area, the vegetation types
conservation reserves. From this, it is likely that VTs 12, 13, 14 and 16 are regionally
significant, with no known locations outside of the Study Area.
Tronox Management Pty Ltd (Tronox) (formerly Tiwest) operates a mineral sand mine
located at Cooljarloo, approximately 160 kilometres (km) north of Perth on the northern tip of
the Swan Coastal Plain in Western Australia. Mining commenced at Cooljarloo in 1989 at
Mullering Farm, extending both south (South Mine) and north (North Mine) of the original
farm area. The North Mine extended further north into the Falcon tenement in 2007. Both
dry (strip) and dredge mining processes have been adopted across the project area.
Tronox is proposing to expand its current mining operations to Cooljarloo West, which
deposits - Woolka, Harrier and Kestrel, and all associated supporting activities. This proposal
is being assessed by the way of a Public Environmental Review (PER) because it has the
potential to impact upon significant environmental factors including; highly complex native
vegetation, the known presence of a large number of conservation significant (CS) flora taxa
(including several threatened (T) – Declared Rare Flora (DRF) taxa), Carnaby’s Cockatoo
feeding habitat, habitat for other Threatened fauna (including the Western Ground Parrot) and
complex wetland and groundwater systems in the Cooljarloo area.
As part of the PER an in-depth understanding of the vegetation, including the presence and
Environmental Consulting Pty Ltd (Woodman Environmental) to conduct a Level 2 flora and
vegetation survey as defined by the Environmental Protection Authority (EPA) Guidance
Statement No. 51 (EPA 2004), to support an impact assessment under the Environmental
The Cooljarloo West project area is located immediately west of the existing Tronox
Cooljarloo mining operation. The lack of regional vegetation mapping on the northern Swan
Coastal Plain at a scale suitable to undertake flora and vegetation impact assessment prompted
Tronox to define a Study Area for the flora and vegetation assessment that incorporates the
proposed Cooljarloo West operations area and also sufficient surrounding areas to provide a
suitable local/sub-regional context within which potential impacts on flora and vegetation
may be assessed. In addition, Tronox incorporated areas surrounding the existing Cooljarloo
operations to allow cumulative impacts to be assessed as far as practicable. The area of
assessment in this document includes the proposed area of disturbance at Cooljarloo West, the
existing Cooljarloo mining tenements including Falcon and surrounding native vegetation
primarily of the Bassendean sands (the Study Area) (Figure 1). The Study Area occupies an
area of approximately 34 424 hectares (ha), with dimensions of approximately 26 km from
east to west and 24 km from north to south. The Brand Highway is located on the eastern
boundary of the Study Area, with the northern boundary formed by Wongonderrah Road.
The Lancelin Defence Training Area (DTA) is located on the southern boundary of the Study
Area, with private property and then the Nambung National Park and Wanagarren Nature
Reserve to the west and south-west.
The land tenure of the Study Area is mainly Unallocated Crown Land (UCL), which is
Stock Route and two Nature Reserves (Wongonderrah Nature Reserve and Reserve A40916)
(also managed by DPaW) are also located within the Study Area (Figure 1). Both areas of
intact native vegetation as well as cleared areas for roads and mining (including the Falcon
mining area, sections of the North Mine and the South Mine) are located within the Study
Numerous flora and vegetation assessments have been undertaken throughout the Cooljarloo
tenements, including plant community mapping and surveys for conservation significant flora
taxa (CS flora taxa), including Threatened - Declared Rare Flora (T-DRF) and Priority Flora.
Plant community mapping has predominantly been structurally based, with floristic mapping
undertaken only in the Falcon area. These previous studies have been conducted for
successive exploration and mining approvals over various portions of the current Study Area.
Based on existing knowledge of the Study Area, and a conceptual understanding of the
to support this impact assessment. This level of survey was determined to be appropriate
based on a review of Table 2 of Guidance Statement No. 51, where the Bioregion Group is
defined as Group 2 and the nature of the impact was considered to be Moderate during the
desktop phase of reporting (EPA 2004). A Level 2 survey (Detailed) study consists of a
background research/desktop study and reconnaissance survey, followed by a detailed survey
of the Study Area.
A method statement including a desktop review of the flora and vegetation of the Study Area
impacts on flora and vegetation, including cumulative impacts, associated with Tronox’s
proposed mining activities at Cooljarloo West. The proposed methods were based on
previous data collected within the Study Area. The results of the background
research/desktop study are presented in Section 2 of this report, with the results of the detailed
survey of the Study Area presented in Section 4.
This report is a baseline flora and vegetation study, providing comprehensive floristic
previous work, based on the methods presented in Woodman Environmental (2012a). The
current study includes historic records of all CS flora taxa known from within the Study Area,
to support future impact assessments and applications for clearing permits or approvals to
Aims of the Study
The aim of this study was to describe the flora and vegetation values of the Study Area, in
order to provide appropriate contextual information within a PER.
The overall objectives of the survey were to:
Flora) (T-DRF) taxa, Priority Flora taxa and other taxa of particular conservation
value such as range extensions, potentially new species to science and taxa of
scientific interest that are present within the Study Area. The data to be presented
included results from all previous surveys as well as records of CS flora from the
vegetation mapping studies undertaken in 2012;
Map the locations of introduced taxa and the condition of all areas of vegetation
the Study Area.