Below is the case study on the establishment of the Parkland Heights MRC. This was written by Celine L’her on behalf of UDIA and shows how the idea originated and the benefits.
UDIA Sustainable Urban Development Matrix
|PROJECT NAME||PARKLAND HEIGHTS WASTE MANAGEMENT|
Earthcare Recycling estimates that the amount of waste materials generated from the construction of a standard four bedroom, two bathroom, house averages 35 tonnes. Currently the building industry uses large bins or cages to collect all waste residuals from the site and sends it to landfill. Recent reports show that the amount of actual recycling on residential building sites is around 15 per cent.
Within this context, Rockingham Park Pty Ltd & Summit Development Corporation Pty Ltd has committed to embrace a more sustainable approach to waste management for the construction of the Parkland-Heights development. This project is a new 120 hectares residential development, located in the growing area of Baldivis, approximately 40kms south of the Perth CBD. The whole site was, until spring 2010, a state forest pine. It is now planned to house around 1200 homes.
The project incorporates outstanding sustainable features with regards to water and energy, however, one of the key initiatives is its commitment to significantly reduce landfill and achieve a more efficient use of resources. This initiative implements current leading practice measures from the pre to the post construction phase of the development.
|CORE AREA OF SUSTAINABILITY ADDRESSED BY THIS CASE STUDY||Waste / Infrastructure|
|OBJECTIVES OF THE PROJECT RELEVANT TO CORE AREA||
The main objective of this project is to reduce land fill via on-site recycling of building waste. While typical waste recovery rate per house in a standard development would average 15 per cent (equivalent to 5.25 tonnes of recycling waste and a saving of 2.1 tonnes of GHG), Parkland Height’s recovery rate is expected to average:
Another significant driver for going beyond standard waste management practice was the company’s hope to lead the way and encourage such initiatives to become common practice.
MEASURES / KEY
Waste management procedures and practices cover all project phases with a predominant focus on the construction stage. Historically, for an agro forestry site, developers had to deal with residual material and roots left over from the pine tree removal process during the preconstruction phase. The approach involved residual material and roots to be trucked to a nearby composting facility, screened, chipped and sent to a “waste for energy” plant for electricity production. The remainder from this process is composted, over a nine-month period, and trucked back to site, stored and appropriately reused by the developer as soil conditioner and mulch for public open spaces and rear landscapes.
The construction phase includes the implementation of a 5,625m2 on-site Material Recovery Centre (MRC), operational five days a week, to store building materials which will be mainly reused onsite or transported to the relevant end users (e.g. bricks sent to Midland Brick).
The implementation of the MRC involves:
In order to align with builders’ commitments to reduce waste, community behaviour change initiatives will be conducted post-construction, amongst which:
With respect to the project being at an early planning stage, outcomes and results are as follows:
Local government and Department of Environment and Conservation (DEC) approval processes have been more complex and longer than expected. Delays to obtain the Council’s agreement were mainly due to the fact that the MRC was not part of any of the Local Planning Scheme’s categories.
Regarding the Material Recovery System (MRS), as usual when new initiatives are integrated to building projects, there were fears from builders that sub- contractors would not use the system appropriately. However, on-site signage and education programs assured that as soon as the system was implemented, these concerns did not eventuate.
Finally, it is first important to mention that Parkland-Heights benefits by having greater control over builders waste as the predominant builders are companies of the Summit Homes group – who will build around 60-70 per cent of homes in the development.
|AUTHOR & DATE CASE
|Celine L’her, on behalf of UDIA sustainability committee 01/03/2012|
DETAILS: For more information, please contact Tony Mendez (Executive Manager – Residential Estates, Rockingham Park Pty Ltd & Summit Development Corporation Pty Ltd) on (08) 9321 8868.