Attachment 8 - Interim Stormwater Management Plan - TOPO · 132005.638.06

R5304: NOOSA RESOURCE RECOVERY CENTRE - STORMWATER MANAGEMENT PLAN



1.2.             LEGAL REQUIREMENTS

Stormwater runoff has the potential to cause water contamination and/or environmental harm and is regulated under
the EP Act. Some of the key legal requirements relevant to the operation of the landfill include:

       +      Where stormwater conditions appear on an environmental authority, it is an offence under s.430 of the EP Act,
              to not comply with the conditions of approval. This includes anyone operating under the environmental
              authority e.g. contractors, consultants etc.
       +      Causing serious or material environmental harm is an offence under s.437 and s.438 of the EP Act respectively.
       +      It is an offence to cause an environmental nuisance under s.440. Environmental nuisance is unreasonable
              interference with an environmental value. It may also include an unhealthy, offensive or unsightly condition
              because of contamination.
       +      Under s.440ZG it is an offence to unlawfully deposit a prescribed water contaminant to waters. The most
              common prescribed contaminants resulting from poor stormwater management of ERA operations are:
                   o chemical, or chemical waste
                   o ashes, clay, gravel, sediment, stones and similar organic or inorganic matter
                   o building and construction materials
                   o building, construction and demolition waste
                   o industrial waste
                   o oil
                   o putrescible waste, and
                   o waste water.
       +      Under s.319 an obligation is placed upon all persons in Queensland who are carrying out activities which may
              cause environmental harm to comply with the ‘general environmental duty’. This requires that all reasonable
              and practicable measures must be adopted to prevent and minimise environmental harm. Although not being
              able to demonstrate compliance against the general environmental duty is not an offence, demonstrating that
              all reasonable and practicable measures have been adopted is a defence for offences such as water
              contamination (DES, 2021).

1.3.             GUIDELINES, LICENCE & SUPPORTING INFORMATION

This SMP has been prepared in accordance with:

       +      Guideline Stormwater and environmentally relevant activities (DETSI, 2025),
       +      Best Practice Erosion and Sediment Control (IECA, 2025),
       +      Queensland Urban Drainage Manual (QUDM) (IPWEAQ, 2016), and
       +      Environmental Authority Permit No. EPPR01855314.

Reference has also been made to the Covey Stormwater Management Plan dated February 2026 (Project No 244035 |
Ref No M26-0032Rpt – Issue A).

1.4.             LICENCE CONDITIONS AND WATER QUALITY OBJECTIVES

The following conditions specified by the site permit relate, directly or indirectly, to the management of stormwater:

WT1 – Site erosion protection measures and sediment control measures must be implemented and must have the
hydraulic effectiveness to treat stormwater for 90 % of the annual runoff for each stormwater catchment.

Where soils are temporarily exposed for the construction of new facilities or to facilitate changes in landfill design, all
reasonable and practical measures must be implemented to minimise the amount of sediments able to discharge from
the site. As a minimum the following design criteria apply:

       1.     Collect and drain stormwater from disturbed soils to a sediment basin sized to contain an 80 th percentile five-
              day event or similar; and
       2.     The design life and design storm for temporary drainage works to convey waters to the sediment basin and
              around disturbed areas are:
                  a. Disturbed area open < 12 months – 1 in 2-year ARI event plus 150 mm freeboard
                  b. Disturbed area open 12-24 months – 1 in 5-year ARI event plus 150 mm freeboard
                  c. Disturbed area open > 24 months – 1 in 10-year ARI event plus 150 mm freeboard
                  d. Temporary culvert crossing – minimum 1 in 1-year ARI hydraulic capacity
Environment. Engineering. Education.                                                                                   PAGE 2