Signage for water sensitive urban design (WSUD) assets

Overview

As part of our Development Control Plan (BDCP) - Part J, there is a requirement to submit details of the layout and text for a stormwater quality improvement device plan (sign).  The details of this sign are to be approved prior to the release of the construction certificate. 

The sign is to be fabricated and placed adjacent to the water sensitive urban design (WSUD) assets and installed prior to occupation.  A sign is not required for development sites requiring temporary on-site water quality treatment.  Sites with multiple treatment systems may require multiple signs.

Please note a sign is not required for a site with just an On-site Stormwater Detention (OSD) system or a rainwater tank. The regulatory signage for these systems are covered in our Standard Drawings.

Purpose

Signage will help occupants and visitors to the site understand the components and functions of WSUD so that they can be maintained more effectively.

Signage will also be useful in the event of a chemical spill or a flood event.

Location

Signs should be located near the front of the property, or adjacent to the major asset.  The sign message should be legible, attract attention and be clearly visible, additionally:

  • Signs should not be erected in hazardous locations, for example projecting into passageways at such heights that persons, vehicles or mobile plant may strike them.

  • Signs should not be placed on moveable objects such as doors, windows or racks where a change in position would void the purpose of the sign or cause it to be out of sight.

  • The sign mounting location should remain accessible and visible. The possibility that the sign may become obscured by stacked materials or other visual obstructions should be minimised.

  • Sign visibility will be enhanced if a contrast exists between the predominant colour of the sign and that of its immediate surroundings.

  • External or internal illumination of signs should be considered where the general lighting (either natural or artificial) does not provide for adequate visibility of signs.

  • For maximum effectiveness, signs should be maintained in good condition and kept clean.

Size and Font

The sign must be legible from a 2 metre distance. Typically an A2 sized sign should be used, though sites with multiple devices may need a larger sign.

All text must be in Arial font type. The font size should be a minimum of 8 millimetres when printed.

Materials and mounting

The material chosen for the sign should be suitable for the environmental conditions it will be exposed to, with appropriate mounting conditions for its location.

Appropriate materials

  • Aluminium sheeting (reflective) minimum 2 millimetres. Front face to be “Retro reflective” (honeycomb style) Class 1. In accordance with AS/NZS 1906.1. Image and message to be screen printed.

  • Aluminium sheeting (high security) minimum 0.9 millimetres, marine grade. Front face to be 2millimetre polymer resin; high impact, anti-flammable, anti-graffiti, non-yellowing, total UV protective covering. Print media to be tefalite printable graphics with long-life inks.

  • Polypropylene minimum 1.4 millimetres thick, UV stabilised using recycled material.

Mounting conditions

If fixing to a wall use hilti chemsets or epoxy.  If fixing to a pole, all bolt and bracket fixtures must be corrosion resistant.

Layout

  • please use the indicative layout provided below

  • provide a street address as the title, plus a description such as school or aged care centres name

  • indicate street names of adjacent roads on layout

  • include a north point

  • include the treatment train as a pictorial layout, showing devices and their linkages with the drainage system

  • include a section through, or schematic of each device.  Manufacturers can provide images

  • coloured legend with corresponding colours for each device marked up on the sign

  • neither the Blacktown City Council logo or the proprietary device supplier’s logo is to be used on the sign

  • use standard wording (see below) for each device

  • quote this wording at the bottom of the sign “These assets should be maintained by the landholder. For further information search WSUD at www.blacktown.nsw.gov.au”

Standard wording for devices

Standard wording for a range of stormwater quality improvement devices is provided below.  The standard wording shall be placed in the relevant space on the indicative stormwater quality improvement device plan included at the end of this document.  If more than 1 WSUD device is present, then each device shall be included on the sign.

Rainwater tank

This rainwater tank captures and stores roofwater so that it can be used for (please insert here what the tank is connected to ie toilet flushing or irrigation).

Note: Taps using this rainwater should be marked with a sign similar to this.

rainwater-tank-sign.png

Stormwater tank

This above/below ground (please delete whichever does not apply) tank captures and stores stormwater so that it can be used on-site for irrigation. The tank has pumps and filters that require maintenance. This water is not suitable for drinking.

Note: Taps using this stormwater should be marked with a sign similar to this.

do-not-drink-sign.jpg

Bioretention

A bioretention (also known as a raingarden) improves the quality of stormwater running off the site. Stormwater will pond on the surface of the bioretention for several hours before infiltrating through its sandy filter material. Healthy and dense vegetation will help improve stormwater treatment.

On-site stormwater detention (OSD)

On-site stormwater detention is the temporary storage and controlled release of stormwater generated from a site, reducing flood risk and providing environmental protection to our local waterways.  These systems should be dry except during and immediately after rain.

Note: OSD systems in addition should display this signage.

OSD-signage.png

CDS gross pollutant trap

The CDS (continuous deflective separation) gross pollutant trap, is a below ground system, designed to catch oils, coarse sediment, litter, debris and other larger pollutants, minimising pollution entering our local waterways.

For more information www.rocla.com.au

HumeGard gross pollutant trap

This below ground system captures and retains litter, oils and coarse sediments from the stormwater drainage network, minimising pollution entering our local waterways.

For more information www.humes.com.au

Stormwater360 EnviroPod® pit litter basket(s)

The EnviroPod has a filter bag and sits within the drainage pit. It captures and retains debris and litter before it enters the stormwater drainage system, minimising pollution entering our local waterways.

For more information www.stormwater360.com.au

SPEL StormSack pit litter basket(s)

The StormSack has a filter bag and sits within the drainage pit. It captures and retains debris and litter before it enters the stormwater drainage system, minimising pollution entering our local waterways.

For more information www.spel.com.au

Humes HumeCeptor®

The HumeCeptor sits below ground and removes oils, silt and sediments from the stormwater before it enters the stormwater drainage system, minimising pollution entering our local waterways.

For more information www.humes.com.au

SPEL Stormceptor

The Stormceptor sits below ground and captures and retains sediments, gross pollutants and oils from stormwater before it enters the stormwater drainage system, minimising pollution entering our local waterways.

For more information www.spel.com.au

Stormwater360 StormFilter

The StormFilter uses cartridges, housed in an underground concrete tank, to capture sediments, nutrients and oils from stormwater before it enters the stormwater drainage system, minimising pollution entering our local waterways. This system will retain water for a few hours after a storm.

These cartridges must only be maintained in accordance with manufactures requirements.

For more information www.stormwater360.com.au

SPELFilter

The SPELFilter uses filter cartridges, housed in an underground tank, to capture nutrients, fine sediments and oils from stormwater before it enters the stormwater drainage system, minimising pollution entering our local waterways. 

These cartridges must only be maintained in accordance with manufactures requirements.

 For more information www.spel.com.au

Stormwater360 Jellyfish® Filter

The Jellyfish is a below ground device that captures fine sediment, nutrients and oils from stormwater before it enters the stormwater drainage system, minimising pollution entering our local waterways.

These filters must only be maintained in accordance with manufactures requirements.

For more information  www.stormwater360.com.au

SPEL Puraceptor

The Puraceptor is a below ground device that captures oils and is designed to capture and retain oil spills preventing discharge into the stormwater drainage system, minimising pollution entering our local waterways.  

For more information  www.spel.com.au

Wetland

Wetlands are vegetated water bodies that provide flood storage and stormwater pollutant removal through settling and biological processes. Wetlands improve biodiversity by providing habitat for native flora and fauna. Please do not enter the water.

Pond

Ponds are open water bodies that provide flood storage and stormwater pollutant removal through settling and biological processes. Ponds improve biodiversity by providing habitat for native flora and fauna. Please do not enter the water.

Sediment basin

Sediment basins trap stormwater allowing sediment to settle out before discharge into the stormwater drainage system. Please do not enter the water.

Indicative layout

Please find attached an example layout.