Impacts of the proposal
What is the impact on laneway system?
47The experts also held different opinions about the impacts of other aspects of the proposal on the laneway system, which include the use of 8.7m trucks, environmental capacity and pedestrian safety. Mr Coady acknowledged that individually these matters would not be a reason to refuse the application but in combination with the other matters the proposal was unacceptable.
Servicing the proposal
48The proposal is to be serviced by a maximum of six truck deliveries per day (3 x up to 6.5m and 3x up to 8.7m). The truck deliveries would be limited to one per hour between 9 am to 3 pm Monday to Saturday. In addition, there would be a maximum of four delivery vans per day, which could park in the carpark before 9am and in the loading dock at other times.
49The route for the trucks to access the site is via Military Road, Mandalong Road, Clifford Street, Field Way and Horsnell Lane. The exit route is via Horsnell Lane, Field Way and Clifford Street and Spit Road.
50The experts agree that the 8.7m trucks can access the loading dock and can be unloaded with the loading dock door closed. Mr Coady is concerned that the access route for the trucks is through narrow lanes and that, although Horsnell Lane and Field Way are two way, they are not wide enough for vehicles to pass. In particular, while the 8.7m truck can turn into Field Way (north) it must cross to the other side of the lane. In his opinion, the parking on the west side of Field Way north of Horsnell Lane would need to be removed, which would impact on the already short supply of on street parking. Furthermore, the turning test for the 8.7m truck was done under controlled conditions and not with high traffic flow.
Pedestrian conflict
51Based on the pedestrian counts that were undertaken in Field Way and Horsnell Lane, Mr Rogers and Mr Coady agreed that the level of pedestrian activity on that laneway system is relatively minor..... taken in isolation issues associated with pedestrian/vehicle conflict in the laneway system which provides local access to the Dan Murphy's proposal is not of sufficient significance to be fatal to the proposed development. However, Mr Coady considers that the pedestrian facilities in the laneway are substandard and that the increase in traffic would further discourage pedestrian use. Mr Coady also raised concerns about potential conflicts at the intersection of Military Road, Field Way and Mandalong Road which has a complicated arrangement and high pedestrian volumes.
Environmental capacity of Horsnell Lane
52Mr Coady and Mr Rogers agree that the capacity of Horsnell Lane is related to its intended function and that it services uses in the business zone. However, Mr Coady considers that as Horsnell Lane is at an interface with a residential zone and has frontages to residential uses, it can be considered to be an "accessway" for the purpose of applying Table 4.6 of the RTA Guide to Traffic Generating Development (RTA Guide). He acknowledges that the maximum level of traffic activity should not be restricted to 100 vtph, but that this provides a guide as to an appropriate level of traffic activity for a laneway with residential frontages. In his opinion, the additional traffic generation of the proposal exceeds the environmental capacity of the lane and would impact on the amenity of the residential flat buildings at 11-17 Clifford Street and 1 Field Way.
53In Mr Rogers' opinion, the relevant provisions of the RTA Guide apply to residential streets in residential areas. He does not consider that Horsnell Lane is a residential lane or that environmental capacity is an appropriate criterion. In his opinion, the level of traffic generated by the proposal is acceptable as it is similar to that of the Cache development and the Approved Development and does not compromise pedestrian safety or amenity.
Findings
54The traffic experts disagree on whether 'environmental capacity' is an appropriate criterion to apply to Horsnell Lane. Section 4.3.1 of the RTA Guide states:
Environmental capacity considerations are relevant to streets in residential areas, neighbourhood shopping centres and educational precincts.
55The capacity of Horsnell Lane is related to its intended function to provide access to uses which front Military Road, including retail and residential uses. It also provides access to residential uses which front Clifford Street. Both sides of the lane front residential uses and the environmental capacity performance standard in Table 4.6 of the RTA Guide is a relevant consideration.
56Mr Coady acknowledges that the maximum level of traffic activity should not be restricted to the environmental performance standard of 100 vtph, but that this provides a guide as to an appropriate level of traffic activity for a laneway with residential frontages. Pedestrian safety is of 'primary concern' in limiting traffic on minor roads and the number of pedestrian using Horsnell Lane are low. However, s 4.3.1 of the DCP seeks to extend the network of laneways and rear streets to improve pedestrian accessibility, safety and amenity. It identifies Horsnell Lane and Field Way as part of this pedestrian network which would be impacted by the level of traffic likely to be generated by the proposal. As discussed above, the traffic would be a significant increase on that generated by the Cache development and the Approved Development. Retail uses which generate traffic generation levels similar to that anticipated in the Approved Development (120 vtph based on 1117sqm of retail) would be more consistent with the environmental capacity of the laneway and the function anticipated in the DCP to provide access for both vehicles and pedestrians.
57Hussey C in FKP also found that "the predicted traffic volume in the order of 230vph significantly exceeds the environmental capacity criterion, which is a further negative aspect of the proposal."
58It has been demonstrated that trucks can access the loading dock. Due to the constraints of the surrounding streets the designated route is through narrow laneways. Horsnell Lane is within the B2 Local Centre Zone and it can be argued that access for trucks to service uses along this lane is anticipated, however, not necessarily the number of trucks proposed with the resultant noise levels. Field Way is within the R3 Medium Density Residential Zone, it is narrow and if cars are parked does not provide sufficient width for two way traffic. The use of Field Way to provide access for a truck every hour for six hours a day is not consistent with this zoning, particularly as 1 Field Way and 3 Clifford Street front Field Way with minimal setbacks. The number of trucks and the resultant noise impacts are not 'reasonable impacts'.
What are the noise impacts?
59The experts agree that the mechanical plant noise would comply with the noise criteria subject to the implementation of the noise mitigation measures recommended by Dr Tonin. They also agree that it had been demonstrated that the 8.7m trucks could be accommodated within the loading dock and that provided the door was closed the unloading and loading of trucks would be acceptable. Dr Tonin recommended that garbage trucks not be loaded from within the loading dock due to noise from reversing and manoeuvring. Mr Cooper maintained a residual concern that the noise from collection of trolleys and night fillers had not been assessed.
60The main disagreement between Mr Cooper and Dr Tonin was the impact on residential amenity resulting from the noise from traffic generated by the proposal, particularly from the 8.7m trucks. They agreed that the NSW Road Noise Policy (RNP) provides guidance on traffic noise impacts created by additional traffic on local roads related to land use development and that the noise assessment criterion for the proposal is 55 LAeq, (1 hour) measured at the façade of any residential property. The experts disagreed on aspects of the RNP, in particular, the interpretation of the "build option" and the "no build option" for the purposes of comparing the noise environment if the development proceeds and if it does not.
61Mr Cooper noted that the steps in s 3.4.1 of the RNP for applying the noise criterion are more related to road projects than to increased traffic from developments. He considered that the proposal should be compared to the existing noise situation ie the Approved Development with vacant retail space. Whereas, in Dr Tonin's opinion, the "no build option" is the previous Cache development. He compared the noise level calculated for the Application with the noise level calculated for the Cache for residences in Horsnell Lane and Field Way (Exhibit M). During the hearing, Dr Tonin also prepared a comparison of noise levels between the Application and a "no build option" being the Approved Development, based on different traffic generation rates (Exhibit P). Other than the "low range option" the Application does not increase the noise level by more than 2dB above that of the Approved Development. The "low range option" is based on Mr Coady's estimates of the traffic generation for the retail component of the Approved Development (63 vtph), which, for the reasons discussed above, Mr Rogers considered to be too low. In Dr Tonin's opinion, the Application therefore complies with the criterion in the RNP.
62Mr Cooper accepted that if the proposal were limited to the use of 6.5m trucks it would result in similar noise impacts to that of the Approved Development based on the traffic generation figures in Exhibit P. However, he maintained his concerns about the use of larger trucks and raised concerns about Dr Tonin's assumptions including that they relied on ambient noise levels measured by Koikas Acoustics in 2009. In Mr Cooper's opinion, these underestimate the existing situation. Furthermore, while he accepted the use of a logarithmic average from the measured noise levels of individual trucks, he questioned the inclusion of an older 6.4m truck (UQS794), which produced a greater noise level than the other trucks (below 6.5m), particularly the fleet truck (BD04YH).
Findings
63Mr McEwen and Mr Staunton made competing submissions about the interpretation of the RNP, particularly the 'no build option' and the 'build option' as well as whether a 2dB exceedance of the noise criterion is acceptable. Section 3.4 of the RNP provides:
Where existing traffic noise levels are above the noise assessment criteria, the primary objective is to reduce these through feasible and reasonable measures to meet the assessment criteria. The secondary objective is to protect against excessive decreases in amenity as a result of a project by applying the relative increase criteria.
In assessing feasible and reasonable mitigation measures, an increase of up to 2 dB represents a minor impact that is considered barely perceptible to the average person.
64Section 3.4.1 outlines the process for applying the assessment and relative increase criteria. Step 1 requires identification of the study area for assessment. Step 2 requires the identification of where 'for existing residences ... affected by additional traffic on existing roads generated by land use developments, the total traffic noise level from existing roads and the traffic generating development exceed the 'traffic generating development' criterion for residences in table 3....'
65Step 3 requires that 'where exceedences are identified in Step 2, identify feasible and reasonable mitigation measures...' such as road design and traffic management.
66Step 4 states:
For existing residences and other sensitive land uses affected by additional traffic on existing roads generated by land use developments, any increase in the total traffic noise level should be limited to 2 dB above that of the corresponding 'no build option'.
67The 'no build option' is not defined other than in s 2.5.3 which deals with the assessment criteria time frame for new road projects and road redevelopment projects. It specifies that for each time frame a comparison should be made between:
+ The road traffic noise levels if the project proceeds (termed the 'build option'), and
+ The corresponding road traffic noise levels, due to general traffic growth, that would have occurred if the project had not proceeded (termed the 'no build option').
68In applying this to Step 4 the increase in total traffic noise levels of the 'project' should be compared to what would have occurred if the project had not proceeded, ie the exiting development.
69Mr Staunton and Mr McEwen agree that the 'no build option' must be either the Cache or the Approved Development but Mr Staunton submits that this will depend on what constitutes the 'project'. If the 'project' is Dan Murphy's then the Approved Development is the 'no build option'. If 'the project' is the Approved Development then the 'no build option' is the Cache. They also disagree on whether the +2dB applies and held different interpretations of cl 3.5 which deals with cumulative impacts from traffic generating developments and seeks to limit multiple increases in the overall level of traffic noise. Mr McEwen submits that 2dB may be added if the 'no build option' is 53dB or above. Whereas, Mr Staunton submits that if this is correct there would be no limit in multiple increases in the overall level of traffic and the noise criterion would be 57 rather than 55.
70A comparison between the Cache development and the Approved Development under the RNP would not have been required as part of its assessment as the traffic report indicated that there would be a reduction in peak generation for the retail/commercial use in Cache (189 vtph) and the residential/retail use in the Approved Development (85 vtph based on 750sqm of retail). Although, an underestimate of the retail component, there would have been a significant reduction in traffic noise.
71In practical terms the 'project' is Dan Murphy's and the 'no build option' is the Approved Development as this is what currently exists on the site and is what will remain if Dan Murphy's does not proceed. Consequently, any increase in the total traffic noise level should be limited to 2 dB above that of the Approved Development. However, I do not accept that this increase can occur if the 'no build option' is 53dB or above. The intent of s 3.4 and the steps in s 3.4.1 is to not exceed the noise assessment criterion and, where it is exceeded, to employ feasible and reasonable measures to meet the criteria. An increase of 2db above the 'no build option' is acceptable where the criterion is not exceeded. However, where it is exceeded, mitigation measures should be examined (Step 3) and justification provided that all feasible and reasonable mitigation measures have been applied. (Step 4).
72Dr Tonin considered that mitigation measures cannot be applied in this case. However, this is based on physical measures such as road design and noise barriers. A limitation on truck size and frequency as well as traffic numbers are presumably traffic management mitigation measures, some of which have already been applied to the development. However, in all the different options (Exhibit P) the proposal would exceed the noise criterion of 55LAeq and further traffic management measures could be employed to better achieve compliance.
73Even if the increase of 2dB above the traffic noise level of the Approved Development which results in an exceedance of the noise assessment criterion is the correct approach, I am not satisfied that the assumptions on which the options in Exhibit P are based demonstrate the likely increase in traffic noise between the 'build option' and the 'no build option'. The Approved Development is residential with ground floor retail over a basement carpark, which includes public carparking. The building, other than the retail, is now occupied and measurements to determine the existing traffic noise levels could have been undertaken with assumptions then made for the contribution of traffic for the approved retail. However, this was not done and rather the existing noise levels are based on measurements taken in 2009 with assumptions then made about traffic noise from the different options. Mr Cooper undertook two sample measurements which indicated higher noise levels that may result in the Approved Development being close to or above the RNP criterion and mean that further exceedance is to be avoided.
74The inclusion of the 'noisy' truck (UQS794) to calculate the logarithmic average for the trucks below 6.5m gives a higher noise level. While trucks such as this may visit the site, it is likely to be on an occasional basis and is not within the range upon which the noise levels should be based. Similarly, the noise levels for the trucks below 6.5m should not be based solely on the quieter fleet truck (BD04YH).
75The noise of trucks contributes significantly to the traffic noise levels and there is a marked difference between the noise from a small truck and a large truck. Mr Cooper noted that the total existing noise contribution including a 6.5m fleet truck (passby) is 43.6 LAeq(1hr) compared to the contribution including a 8.7m fleet truck (passby) of 51.8 LAeq(1hr). Whereas, the different traffic number between Option 1 (219 vtph Fri PM, 159 vtph Sat) and Coady's sensitivity analysis (Option 2) (263 vtph Fri PM, 216 vtph Sat) result in a noise increase of 0.4 LAeq(1hr) for 0900-1500 and 0.6 LAeq(1hr) for 1700-1800.
76Although not its primary position, Mr McEwen stated that the applicant would accept a condition that restricts deliveries to a maximum of 6.5 m trucks which would require a total of eight such vehicles, together with four smaller delivery trucks so as to maintain the necessary delivery capacity. Truck delivery hours would therefore need to be expanded to 9 am to 5 pm to ensure no more than one arrival per hour of a 6.5 m truck. Mr Staunton submits that this would conflict with peak hour traffic and periods of increased pedestrian activity.
77I note that Mr Cooper has accepted that based on the figures in Exhibit P, if the proposal is limited to 6.5m trucks, it would have a similar noise impact to the Approved Development. However, the calculations in Exhibit P assumed a contribution of 1 truck per hour for each option. While this reflects what is proposed for Dan Murphy's it is not likely to be the situation for the Approved Development. It is unlikely that the Approved Development would need to be serviced by 6.5m trucks as regularly as 1 per hour between 9-5. The Approved Development includes a condition that restricts trucks to a maximum of 6.5m and while it does not limit the number of trucks, it requires a further development application for the use of the retail units and truck numbers could thereby be conditioned. This would be harder to coordinate than for a single large shop but I accept that the number of trucks per day for the approved development is likely to be significantly less than what is required for Dan Murphy's. The calculations in Exhibit P for the Approved Development include one truck per hour, which may represent the worst noise scenario but does not represent the scenario which is likely to most often occur, where only smaller trucks and vans service the retail component.
78For the above reasons, I am not satisfied that the proposal when compared to the Approved Development would satisfy the criterion in the RNP.