LATE RFI Attachment 6 - Stormwater Management Plan

SQIDEP Evaluation                                                 SPEL Basin, Sippy Downs


   1. Introduction
This document reports on the independent evaluation of an application by SPEL Stormwater
(hereafter SPEL) to have Stormwater Australia approve a SPEL Basin under the
requirements included in Stormwater Quality Improvement Device Evaluation Protocol
(SQIDEP) v1.3 (hereafter referred to as SQIDEP) published in 2019 by Stormwater
Australia. SQIDEP v1.3 is available on Stormwater Australia’s website at the time of
reporting.

This is a joint report prepared by Independent Evaluators, Chris Beardshaw, a Director of
Afflux Consulting and Mark Liebman, a Director of Sustainability Workshop. The
Independent Evaluators were engaged by Stormwater Australia on a fee for service basis to
carry out an independent evaluation of a SPEL Basin which can be described as a modular
bioretention system.

Evaluators Independence Declarations
It is declared that both evaluators, Chris Beardshaw and Mark Liebman, are completely
independent and neither Independent Evaluator has any conflict of interest with respect to
this engagement.

We jointly declare that:

We are not, nor have we ever been employed or commissioned by the Applicant, SPEL
Stormwater. We have not been involved in the design or development or monitoring of the
SPEL Basin. We have undertaken this assessment without prejudice and in good faith.

Signed: Chris Beardshaw                     Signed: Mark Liebman



Signature:                                  Signature:




Statutory Declaration by Independent Monitoring Scientist
Dr Darren Drapper has signed a statutory declaration in accordance with SQIDEP.

Background
Stormwater Australia published the Stormwater Quality Improvement Device Evaluation
Process (SQIDEP) in January 2019. The SQIDEP process seeks to “provide a uniform set of
criteria to which stormwater treatment measures can be field-tested and reported. These
criteria should guide and inform field monitoring programs seeking to demonstrate pollutant
removals for stormwater treatment measures included in pollutant export modelling software.
Future revisions of the protocol are anticipated to also include laboratory testing.”
(Stormwater Australia, 2019).

The SQIDEP process is shown below in Figure 2. Two pathways for evaluation exist under
the protocol and this application involves local field testing. The Independent Evaluators


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