Appendix B - Letter from carwash designer.docx

The proposed site is located in a localised ‘service’ area of Cooroy. This site is secluded from the
main foot trafficked retail, commercial areas which are located on the other side of the railway
line (ie: Maple Street and Emerald Street) or along Diamond Street. Whilst the previous planning
application consisted of a 620 M2 retail development was successful; when the owner (Kexron
Pty Ltd- Ron McCarthy) advertised for tenants (prior to construction commencing) he was
unable to gain suitable up-take for the retail units. The common reasoning behind this was that
the potential tenants did not think that the site location was suitable for a retail business- being
located between two Service Stations, on the ‘back’ side or ‘dead’ side of the Railway line and
away from the main foot traffic paths of travel of potential customers. Thereafter he sold the site
to Chris King and Joanne Hill.

One of the main areas/topics that has been completed on this project (that I have never seen
before or been asked to document before) is the Holistic Water Management Plan. Extensive
research has gone into collating this document and it gives a true reflection of the ability of a Car
Wash site to be able to capture, store and use a large volume of stormwater in the car washing
process. This, in turn, results in lowering the demand on the Town Water supply for car washing
process. When a comparison is made with the volume and quality of stormwater discharged
from the previous Motel development that occupied the site verses the proposed Car Wash
development; due to the volume of stormwater that is to be captured and re-used in the car
wash process; the volume of stormwater that is discharged from the site is lower than what is
currently being discharged from the Motel site. Due to the stormwater quality improvement
systems that will be installed in the Car Wash site; the quality of the discharged stormwater will
also exceed the current Motel site WSUD quality treatment requirements.

This report highlights the importance and value of recycling the waste water produced in the
automatic car washing process. By installing the recycling equipment, this will reduce the
overall site water usage and sewer discharge by ~9ML per year which is a reduction of around
60%! Finally, the report emphasises the importance of approving the proposed Car Wash
development by comparing the environmental impacts of the local area’s current car washing
practices (ie: mostly washing your car at home where the effluent water discharges into the local
stormwater system) to the future practices whereby the proposed Car Wash facility is
constructed and can be used to wash their car for an estimated 68,000 car washes per year. This
change and education of the community to the environmental benefits of washing their car at a
car wash that is environmentally friendly (as this site will be) will drastically help reduce the
volume of physico-chemical, heavy metals and organic pollutants that are otherwise dissolved
into the local stormwater system.

The overall site has been designed with the view to reduce the acoustic and lighting impacts to
the adjoining areas. I have worked closely with both the Acoustic Engineer and Lighting
Consultant to ensure that the proposed design can ‘naturally’ mitigate any adverse impacts to
surrounding sites. I have also ensured that all possible elements have been included in the
proposed site layout and design to minimise the risk of crime, by adopting the Crime Prevention
Through Environmental Design (CPTED) principals and minimisation techniques that are
available.




  -4-
             TMC Building Design Group Pty Ltd