HRP17305.L01.001 Irr

ISSUE
No details have been provided in regard to stormwater and wastewater management.
Information Required
1. Please provide the following information to satisfy the drainage and environmental protection
   legislation:
        Wastewater Management Plan
        Stormwater Management Plan


RESPONSE
Please find a revised Hydraulic Services Plan prepared by Plumbing Design & Drafting Pty Ltd enclosed as
Attachment B.
In order to prevent rainwater entering the wastewater system, a bund at least 100mm high is proposed to be
installed around the entire washing area. This area is also under the roof, which overhangs the bund by at
least 900mm. The levels have been marked on the plan that confirms wastewater runoff will fall into the grated
drain and not discharge out into the car park.
Please find enclosed a Stormwater Management Plan prepared by Cardno as Attachment C. The Stormwater
Management Plan outlines that the design proposes discharging the stormwater to the same stormwater
treatment device as the current arrangement, which is considered appropriate as the change in impervious
area is relatively negligible. Stormwater runoff from surrounding carpark areas is mitigated from entering the
washing area by bunding and planters.
ISSUE
The proposed building/s and structure/s have the ability to affect sight lines around the intersection of
the parking aisles.
Information Required
2. Please provide information which              demonstrates      that   sight    lines   as   described    in
   AS/NZS2890.1:2004 are achieved.


RESPONSE
Enclosed as Attachment D please find a traffic engineering response prepared by Cardno.
The proposal plans demonstrate that sight triangles (2.5m x 2m) are provided to the left side of vehicles on
approach to aisle intersections. A pair of columns are located partially within the sight triangle; however, the
area between the column legs have not been filled to enable a line of sight through the intersection to satisfy
AS/NZS2890.1:2004 (see Image 1 below).




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