Engineers Written Response

          21. Provide information from a suitably qualified person detailing the suitability of
          the ‘SPEL Basin’ to comply with PO8 of the Water Quality and Drainage Code in the
          Noosa Plan 2020.
Response:

The SPEL basin is not a Media Filtration Device with an arrangement of cartridges containing
engineered filter media in an underground vault. Instead, it is a proprietary technology that
has been stringently tested under the Stormwater Quality Improvement Evaluation Protocol
(SQIDEP) of Stormwater Australia.

The SPEL system uses natural processes and materials. It is a fully vegetated system with sand
materials used as filter media. The WSUD load reductions are outlined and modelled on the
design plans (Bax Engineering plan 288-001-300(C)). These load reductions exceed the
requirements. The system also comes with a management plan as part of the maintenance of
the system throughout its life cycle.

For further safety the SPEL basin system is fully enclosed, there are no areas of standing water
where insects could breed or could pose a risk to public safety or drowning. They are fully
vegetated and blend seamlessly into the landscaped surrounds. They are also odourless.

The following are links to the product for further information:

https://www.stormwater.asn.au/sqidep/about-sqidep
https://spel.com.au/certifications/#SQIDEP

SQIDEP Verified Products:

https://www.stormwater.asn.au/sqidep/sqidep-verified-products
https://spel.com.au/spel-basin/

Please let me know should you require any further information. We thank you for your time.

Yours Faithfully,



GLENN AINSWORTH
MIEAust CPEng NER RPEQ CPESC
BAX ENGINEERING
Ph: 0407 021 300


Enc: Bax Engineering plans 228-001 revision C




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