Request to Amend Application and Response to DSDIP's Information Request · MCU14/0009

Executive Summary
AquaIntel Pty Ltd was commissioned by TOD Consulting on behalf of K and C Rolton to
prepare a Stormwater Water Management Plan (SMP) in response to Council’s Information
Request in order to support the Material Change of Use application for the proposed light
industry / commercial development at 1 Factory Street, Pomona.

The site is currently a commercial site operating as a service station. The site is relatively flat
and grades to the road frontage. The site does not have any external catchment which
contributes to the site but is affected by regional flooding.

Environmental best management practices are proposed for treatment of stormwater
flowing through the site. Stormwater will be treated by a water quality improvement device
prior to discharging to the receiving environment. Stormwater treatment for the site will
include collection of runoff from roofed, roads and landscape areas being directed to an on-
site bioretention system located along the boundary of the property.

Non-worsening of peak flows from the site has been demonstrated through the incorporation
of a small detention system located above the bioretention system. All runoff will be
collected and directed this location prior to outleting to the frontage in Factory Street.

This Stormwater Management Plan demonstrates that effective treatment of stormwater at
the proposed development can be achieved through the application and appropriate design
of Water Sensitive Urban Design (WSUD) principles in accordance with legislative
requirements and best practice guidelines. The treatment proposed for the development site
achieves the performance criteria set by the Noosa Shire Council. Through the
implementation of detention system on the site non-worsening criteria has been achieved to
ensure no downstream impacts.