Ref: 10796
14/08/2013
Works Notice: Marylands Reserve, Middleton, bio-filter installation
What: Installation of a new bio-filter for Pressure Main 105.
Where: Marylands Reserve, between 17 and 21 Birmingham Drive.
When: Work will begin on Monday 19 August and is expected to be complete in late September.
Traffic impact: Two way traffic will be maintained on Birmingham Drive via lane shifts by the entrance
to Marylands Reserve. There will be reduced parking in this area. There will be also be increased traffic
movements on Birmingham Drive by Marylands Reserve as trucks unload equipment.
Bir
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N
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Pressure wastewater
pipe already installed
Key:
Pressure Main 105
Odour duct
New bio-filter
Existing
manhole
Electrical
kiosk
Sourced from LINZ data, Crown Copyright reserved
Where:
What we are doing:
All wastewater pipes ventilate their odours via manholes in the road, and through vents and fittings.
To mitigate the risk of odours ventilating undesirably from Pressure Main 105 the air will be actively
ventilated through a bio-filter. As the air passes through the bio-filter the bark natural processes remove
odours before releasing into the atmosphere. The bio-filter will be connected to Pressure Main 105
which has already been installed through Marylands Reserve via an underground duct connected to a
fan. Visually, the bio-filter will look like a bark garden and a small electrical kiosk will be located nearby
to house the electrics for a fan. The area will be landscaped so it looks as unobtrusive as possible.
Please turn over
How our work could impact you, general impact:

There will be increased noise, dust and vibration levels associated with this work, and the use of
trucks and other machinery will be necessary.

To connect the bio-filter to the manhole work will be needed on Birmingham Drive, near the
entrance of Marylands Reserve. Two-lanes of traffic will be maintained via lanes shifts. This is
expected to be completed in the first two weeks of the work. There will be reduced parking on
Birmingham Drive during this time.

The footpath on the Marylands Reserve side of Birmingham Drive will be closed while the
connection is made to the manhole. Please use the footpath on the other side of the road.

Works will take place between 7.00am and 6.00pm, Monday to Saturday.
Works will have no planned impact on current telecommunication, wastewater, water or gas
services. However, the network is still fragile so please be prepared in case there is an unexpected
service cut off.
There will be three other worksites in Marylands Reserve, to strengthen the joints along Pressure
Main 105. This work is expected to be completed in October.


Marylands Reserve:

Marylands Reserve will remain open to recreational use outside of the fenced work areas, shown
below.
Key:
Bio-filter worksite
Work sites for joint strengthening of Pressure Main 105
Fenced off access way for the Obedience Club and park maintenance
Please see next page
Tree removal:
Three trees, shown below: two Pin Oak and one Chinese Elm will need to be removed to install the
bio-filter. Some nearby trees will also need to be pruned to make room for the machinery. Landscaping
will be completed around the bio-filter to make up for the amenity loss of these trees and to integrate the
bio-filter into the reserve.
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