06/1168 - Change a Development Approval [As Published] · 132006.1168.02

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8. Water Quality Protection (Surface & Groundwater)

8.1 General

Given the sensitive nature of adjoining environments, potential impacts on adjoining surface water may
occur as a result of construction activities occurring onsite, particularly during wet periods where
contaminated runoff may flow to sensitive areas and may have potentially adverse impacts on significant
fauna species.

8.2 Objectives

» To comply with relevant environmental legislation (e.g. Environmental Protection Act 1994 and the
associated EPP (Water)); and

» To minimise erosion and effectively contain any sediment or other pollutants in run-off generated by
the construction activities.

8.21 Stormwater Management

» Stormwater should be diverted around the construction area to maintain clean flows into natural and
formed drainage lines downstream; and

» The Contractor is responsible for controls to prevent stormwater flows adversely affecting receiving
environments, including areas of ponding adjacent to the road reserve, through sediment transport
and deposition.

8.2.2 Surface Water Management
» No access is permitted in the adjacent vegetation and habitat areas.

» No discharge of sediments or contaminants shal! be permitted from the site into the adjacent wetland
areas or watercourses. Visual inspections of these adjacent areas shall be undertaken daily and
after immediately after heavy rainfall events (> 30 mm in 1 hr’).

» Monitoring of water quality in adjacent areas is to be undertaken for the minimum parameters of pH
and turbidity (NTU) (for potential acid frogs and other wetland species affected by changes to water
quality) after significant rainfall events and where visual inspection indicates that site works have
impacted on adjacent areas through sediment export or increased flow velocity.

8.3 Responsibilities

8.3.1 Construction Manager
The Construction Manager will be responsible for the following:

» Providing all necessary plant and equipment to ensure that the above requirements in relation to
surface water quality monitoring can be adequately and appropriately implemented at the project site.

? This equates to a Q3 rainfall event.

41/22382/12186 Girraween Sports Precinct 20
Environmental Management Plan (Construction)