Further Advice Response 17-07-25 22BRT0122_LT01_3 · OPW25/0042

It is noted that the Bulk Earthworks scope is to move 1,500m3 of soil daily from the subject site. Typical bulk
haulage trucks are equivalent to a Type 4 heavy vehicle (Austroads) with a carrying capacity of 20m3 of
material. Assuming an average haulage capacity of 20m3, there would approximately 75 loaded and 75
unloaded vehicle movements daily from and to the subject site respectively. The total period of haulage is
estimated at 12 to 14 weeks (6 day per week operation) – equivalent to ~100,000m3 total material removed.

For ‘Distributor’ roads and the majority of ‘Collector’ (higher order) road types, pavements are designed to
have 1x 106 Equivalent Standard Axles (ESA’s) of pavement strength. Based on the total ESAs on the road
network, and given the standard design ESA’s of pavements for the road hierarchy, the overall pavement
impact of truck movements will be between 0.3% (unloaded) to a maximum of ~3% (loaded) for the higher
order roads, which less than the 5% threshold as outlined in DTMR’s documentation. Therefore, the relative
pavement impact of truck movements for the Bulk Earthworks associated with the subject development on
these higher order roads will be negligible and no amelioration is required.

For the minor roads, Serenity Close and Grant Street, detailed pavement impact calculations using the
Department of Transport and Main Roads’ (DTMR’s) Guide to Traffic Impact Assessment Practice Note:
Pavement Impact Assessment has been undertaken. Based on the assessment methodology from DTMR’s
document, the respective truck pavement loadings for these movements are determined as follows:
         Total number of truck movements: 5,000 loaded trips and 5,000 unloaded trips
         Austroads Heavy Vehicle Class: Class 9 up to 19.0m AV
         DTMR PIA ESA parameters:
                o    SAR 4 Granular Pavement
                o    Unloaded SAR – 0.51
                o    Loaded SAR – 4.93
         Marginal Cost: 13.60 cents ($0.136) / SAR-km
         Length of affected road: 0.85 km

Based on the above, there would be a total of 2,168 SARs in the unloaded direction and 20,953 SARs in the
loaded direction. Applying these values to the length of affected road (by direction) and the marginal cost
value, the following pavement impact offset (rehabilitation) costs are noted:
         Loaded direction: $2,850
         Unloaded direction: $295

Noting the assessed pavement impacts noted above, it is recommended that the client arrange for repair of
any minor potholes on the local roads Serenity Close to Grant Street that appear during the haulage period.
It is expected that a Dilapidation Plan will be undertaken with review of the haulage route between the site
up to and including the Grant Street / Noosa Drive roundabout intersection, as well as the key intersection of
Weyba Road / Mary Street / Reef Street roundabout, to identify potential road infrastructure impacts (e.g.
broken kerbs) that may have occurred during the haulage period.
Site: 3-7 Serenity Close, Noosa – Proposed Resort Complex
Reference: 22BRT0122