Project number 3990/3
Project name

Clearing of 3.82 hectares of native vegetation for the purpose of the Augusta boat harbour development.

Project status Current
Proponent(s) Department of Transport
Project location

LOT 331 ON PLAN 71864 LEEUWIN 6290

Project bioregion(s) Warren
Assessment criteria (a) it comprises a high level of biological diversity., (c) it includes, or is necessary for the continued existence of, rare flora.
Residual impact

Loss of up to 3.82 hectares of native vegetation in excellent to degraded (Keighery 1994) condition that includes:
- high flora diversity.
- significant habitat for the rare flora species Kennedia lateritia.
- habitat for Priority 3 species Bossiaea disticha.

Offset conditions

4. Site Rehabilitation and Environmental Management Plan

(a) By 1 January 2013 the Permit Holder must, prepare and submit to the CEO for the CEO’s approval a revised Site Rehabilitation and Environmental Management Plan for Lot 331 on Deposited Plan 71864.
(b) The Permit Holder shall implement the Site Rehabilitation and Environmental Management Plan approved by the CEO.
(c) If it is necessary to modify the Site Rehabilitation and Environmental Management Plan, then the Permit Holder must provide that modified Site Rehabilitation and Environmental Management Plan to the CEO for the CEO’s approval.

Statutory process EP Act Clearing (Part V)
Approved project area (ha) 3.82

Decision(s):

DECISION 1
Date: 2012-10-04 Ministerial statement: None
OFFSET 1
Condition status: Current
Type(s): Rehabilitation
Rationale:

This offset will result in the rehabilitation of approximately 2 hectares of native vegetation in excellent to completely degraded (Keighery 1994) condition surrounding the project area. This offset focuses on the rehabilitation, population extension and ongoing maintenance of native vegetation but specifically the Kennedia lateritia (Declared Rare Flora).

This offset is considered to be relevant and proportionate to the significance of the environmental value being impacted, mitigating the residual impacts of the project.

Security arrangements:

Lot 331 on Plan 71864 is vested with and managed by the Department of Transport for the land use of harbour purposes.

Governance arrangements:

Offset location:

Lot 331 on Plan 71864, Crown Reserve 51096, 331 Leeuwin Road, Leeuwin, 6290.
Road Reserve, PIN 11607705, Leeuwin Road, Leeuwin. 6290.

Approved offset area (ha): 2.0
Bioregion(s): Warren
Delivery agent:

CONDITION MILESTONE 1
Milestone:

Condition Milestone 1 - relates to Permit condition 4(a)

The Permit Holder must, prepare and submit to the CEO for the CEO’s approval a revised Site Rehabilitation and Environmental Management Plan for Lot 331 on Deposited Plan 71864.

Timeframe:

By 1 January 2013.

Complete: Yes
CONDITION MILESTONE 2
Milestone:

Condition Milestone 2 - relates to Permit condition 4(b)

The Permit Holder shall implement the Site Rehabilitation and Environmental Management Plan approved by the CEO.

Timeframe:

Prior to the expiry of the permit.

Timeframe (date): 2016-08-01
Complete: No
IMPLEMENTATION MILESTONE 1
Milestone:

Implementation Milestone 1 - relates to Condition Milestone 2

The Department of Transport is to implement the “Site Rehabilitation and Environmental Management Plan (SREMP), Augusta Boat Harbour, August 2012” which includes, but is not limited to, the following requirements:

Site preparation:
- seed collection
- seedling propagation
- topsoil and subsoil collection from clearing areas
- weed treatment
- field demarcation of Kennedia lateritia plants

Vegetation establishment:
- topsoil and subsoil spreading
- mulching using cleared vegetation debris
- contour scarification of prepared rehabilitation surfaces
- direct seeding
- planting

Monitoring:
- assessment of plant species biodiversity parameters such as species richness and diversity, plant density and percentage cover as indicators of ecosystem development and stability
- qualitative assessment of the developing rehabilitation will include seed germination, plant establishment and survival, species diversity and weed establishment for the first growing season
- quantitative assessment of rehabilitation will commence in the second growing season and includes the photo monitoring of rehabilitation blocks using permanent belt transects of twenty contiguous one metre square quadrats. Each quadrat will be assessed individually by each species for number present, percentage ground cover and maximum plant height.
- scheduled monitoring will be undertaken by a qualified botanist

Maintenance:
- weed control
- vermin control
- fire management
- dieback and pest management

Establishment completion criteria:
- nursery propagated seedlings (from a mixture of seed, cuttings, root divisions, and tissue culture) replanted throughout the rehabilitation area at a density >1,000 seedlings ha-1
- at 15 months total number of Kennedia lateritia plants at the site to be 150% of the number recorded prior to development
- at 15 months species richness to be at least 80% of that recorded at the analogue site, with not more than 10 percent of the annual assessment plots failing to record this level of diversity
- surfaces stable with no evidence of surface erosion that is likely to limit establishment of a native vegetation cover
- no areas greater than 0.01 ha without understorey

Long-term completion criteria:
- species richness to be at least 80% of that recorded at the analogue site, with not more than 10 percent of the annual assessment plots failing to record this level of diversity
- for Peppermint trees (Agonis flexuosa) planted to consolidate the existing southernmost clump of taller trees at the project site, a minimum number of 15 trees have survived 5 years following commencement of rehabilitation
- no Declared Plants (weeds) as defined by DAFWA (2007) present within rehabilitation areas
- the rehabilitation surface is stable and vegetated, with no uncontrolled run-off

Timeframe:

Site preparation: 2010-2011.
Vegetation establishment: 2012.
Monitoring: annual monitoring for 3 years following the completion of rehabilitation and then at a 3 year interval from then onwards until revegetation is self-sustaining.
Maintenance: as required.
Establishment completion criteria: 2013.
Long-term completion criteria: 2015 or until completion criteria are met.

Complete: No