Response to Information Request OPW20-0145. 19.10.2020 · OPW20/0145

6. Amend the pathway width on the western side of Road C to be in accordance with Condition 17.

10.

17. Prior to the sealing of the survey plan, the private road within Lot 3 (Road C — adjacent
to lots 7-9) must be constructed with a centrally located 12m carriageway having 1.5m
on-road cycle lanes on each side, The works must be in accordance with an Operational
Works approval and be generally in accordance with drawings numbered 1856-R05
revision K and 1856-R07 revision J prepared by Barlow Shelley. The works must include
but not be limited to kerb and channel, 3m footpath on the western side, street lighting,
services, linemarking, stormwater drainage and landscaping. The road must be
designed to cater for on-street parking to be added when future development occurs on
lots 3 and 7.

Stockwell Response

Barlow Shelley have updated their plans to include a 3m footpath width on the western side of Road C. Please refer
to drawings 1856-R36D and R39D.

Road C is proposed with a 15m carriageway, compared with the 12m width required in Condition 17. Clarify
how the proposed wider width is proposed to be used and operated.

Stockwell Response

Road C is proposed to be a 12m centrally located carriageway with 1.5m cycle lanes on the western and eastern sides.
Barlow Shelley have amended the Road C Cross Section (1856-R52D) to indicate 2 x 1.5m cycle lanes for clarification.

Indicate on the relevant plans the pathway as described in Condition 24(d).

d. the footpath on the northern side of Hofmann Drive must be extended from the
crossing point adjacent to Lot 4 to the north west for the full frontage of Covenant J

Stockwell Response

Providing the footpath link in front of Covenant J to the boundary of Lot 17 will impose on the position and function of
the Stormwater Quality Improvement Device (SQID) device. The SQID basin must be generally located in the road
reserve due to land topography and has already been discussed during the ROL application as to whether it could be
located within the end of Covenant J. Please refer to drawings 1856-R66D. It is proposed that the footpath crosses to
the south-western side of Hofmann Drive with an additional crossing to the north-eastern side near Lot 17 for a future
footpath extension along the frontage of Lot 17-21 when these lots are developed.

The proposed level of the roundabout at the Road B/ Hofmann Dr intersection appears to be too high and
creates possibly unnecessarily steep grades into Road B and Hofmann Dr from the roundabout. Provide an
amended design that lowers the roundabout to improve these grades, or alternatively provide justification
for the proposed design.

Stockwell Response

The height of the new southern roundabout cannot be lowered as this roundabout is connected to Road A. Road A
has a grade of 0.5% towards the existing road stub off Walter Hay Drive. If the new southern roundabout were
lowered, it would alter the existing natural catchments as Road A would then slope westwards, bring stormwater
from Walter Hay Drive back through the development to the drainage reserve in Covenant J. The vertical curves
from the southern roundabout into Hofmann Drive and Road B can be flattened for a better transition. It is proposed
to be regraded from -8.614% to -5.497% longitudinal grade in accordance with Austroads requirements. Please
refer to Barlow Shelley drawings 1856-R45D.

Provide design vehicle swept path diagrams for turning movements at intersections, to/from left turns only
driveways, and the emergency access driveways.

Stockwell Response

Barlow Shelley have included swept path diagrams for turning movements at all intersections, left turn only
driveways, and the emergency access driveways located on Lot 11, 15 and 23. Please refer to drawings 1856-
T10A-T15A.

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