Evidence
6Read before the Registrar, and again before me, were affidavits of Mrs Lesley Finn, solicitor, dated 14 February 2013, attaching a report of Mr Grey hydrogeologist, and 20 February 2013, attaching a traffic report of Mr McClaren dated 20 February 2013. Mr McClaren states that traffic generation from the development is likely to be greater than identified by GTK Consulting using the seniors SEPP requirements. He considers that further sensitivity testing is required, and a comparison assessment of similar development elsewhere in Woollahra for medium density development. Morton and Dorhauer Lanes are very narrow and no information about sweep paths has been provided with due regard to access for the largest design vehicle. He considers the generic traffic generation rate from the RMS guideline for seniors housing is quite old and the data underpinning it should be reviewed in the context of similar development where affluent and more mobile lifestyles of the occupants are likely. If these RMS figures are used, up to nine trips per peak hour are predicted. He also identifies pedestrian safety and the impact of additional traffic at the intersection of Queen Street and Dorhauer Lane as requiring consideration.
7The Council's statement of facts and contentions was attached to the affidavits. It does not identify any contention in relation to traffic. It states in relation to groundwater:
The construction of the basement level would intercept and impede natural groundwater flows, impact upon the water table and therefore necessitate diversion around the basement and not to the proposed sump and pump system. The proposal is contrary to C1 of clause 3.4.13 of Woollahra HCA DCP 2003 insofar as it applies to permissible development.
8A series of photographs taken by Mr Edmonds showing vehicles negotiating along Morton and Dorhauer Lanes which are narrow at 4m wide, tendered before the Acting Registrar, were also tendered before me.
9As this is a hearing de novo additional evidence not before the Acting Registrar was also tendered. An additional affidavit of Mrs Finn dated 5 March 2013 was read which attached a further report of Mr Grey dated 4 March 2013 in which he referred to the Expert witness Code of Conduct and identified again the issues he considered were raised in relation to the geology and hydrogeology of the site as a result of the proposed development. Extensive excavation is required for the proposed basement carpark through the groundwater table. He concludes that there are data gaps which require additional investigation and assessment, the information provided to date being entirely inadequate to allow the assessment of the overall acceptability of the proposed development. Once further investigation is conducted a design and management plan for a permanent groundwater interception and drainage system would have to be developed to address various specified matters. Further photographs taken by Mr Edmonds of various vehicles using the narrow Morton and Dorhauer Lanes were also attached.
10An affidavit of Mr Kennedy, traffic engineer, dated 5 March 2013 was read by Manderrah. This criticised the application of the medium density housing traffic criteria applied by Mr McClaren given that the DA is for seniors housing, assessed accordingly as compliant. The concerns Mr McClaren raised are in relation to part of the public street network, the narrow streets which already operate with low vehicle speeds and increased driver awareness and which are already used as the street access for the existing aged care home. Mr Kennedy considered that the predicted increased traffic flows are so low at three or nine vehicle trips per peak hour that the numbers do not result in any appreciable difference in delays or levels of service at the intersection of Queen Street and Dorhauer Lane. He attached a minute from the Council's development and traffic engineer which identifies that a traffic report by GTK Consultants (Mr Kennedy's firm) dated May 2012 and additional statement in response to a request for more information were provided and assessed. The Council officer notes that parking requirements of the seniors SEPP are met. The traffic generation figures of 1.5-3 peak hour vehicle trips expected from the development are accepted.
11Both traffic engineers refer to access for ambulances along Morton and Dorhauer Lanes, disputing whether this is a real issue. I was informed that Manderrah now considers that ambulances can use the Queen Street entrance for emergencies rather than Morton Lane. This no longer appears to be an issue in the proceedings.