RFI - civil response letter

    2.3. the transitions to the adjoining verge areas. Please note that the transitions must not create
         trip/fall hazards and Council does not support private retaining structures in the road reserve.
Response
There is considered to be adequate information on the civil plans to determine the intended grading of
the crossover and internal driveway. The grades are not steep and are all in line with AS2890 and therefore
vehicle height templates haven’t been provided as no proposed grade exceeds 1 in 10.
Requested Information:
Issue
No Earthworks Plan and Erosion and Sediment Control Plan has been provided as part of this application.
Council notes that an earthworks approval is not included in the Operational Works application
(OPW22/0090).
Information Required
3. Provide confirmation as to who will be certifying the earthworks required to carry out on site.
4. Provide an Earthworks Plan certified by a suitably qualified persons that demonstrates compliance
     with the recommendations outlined in Tectonics’ Slope Stability Assessment report.
5. Provide an Erosion and Sediment Control Plan certified by a suitably qualified persons that
     demonstrates compliance with the recommendations outlined in Tectonics’ Slope Stability
     Assessment report.
Response
Westera Partners will be responsible for supervising and certifying the civil works on the project with
direct certification of the earthworks from the project geotechnical engineer. Earthworks & erosion and
sediment control plans accompany this response and are considered to be in line with the intent of
Tectonics’ Slope Stability Assessment report.
Requested Information:
Issue
There is insufficient information to demonstrate that the stormwater runoff from the top of the site will
be directed away from the building walls and footings as per the recommendations outlined in Tectonics’
Slope Stability Assessment report. Council has concerns with the potential impacts of the stormwater
discharge (volume, velocity) and the potential to create traffic hazards and cause scour and damage to
the road reserve. Additional detail must be provided in the amended Stormwater Management Plan that
is sufficient to address Council’s concerns
Information Required
Provide an amended Stormwater Management Plan that follows the recommendations outlined in
Tectonics’ Slope Stability Assessment report and addresses Council’s concerns. The amended Stormwater
Management Plan is to be certified by a suitably qualified persons (RPEQ – Registered Professional
Engineer of Queensland).

Response
A cut off drain is documented at the top of the rear retaining wall with indicative pipe connection to the
site LPOD (actual pipe link will be subject to plumbing construction). This is considered to adequately
address the bulk of the potential issues with upslope stormwater.




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