Engineering services committee meeting (3 July)

The engineering committee meeting was held on 3 July 2014.

This was one of the briefest engineering committee agendas I had read for a long time. The meeting agenda included: (1) an LED lighting upgrade program for 14 coastal streets, (2) closure of the Collingwood Resource Recovery Centre from July 2015, and (3) the engineering managers update report (covering various topics, including; a service agreement with NZTA over Golden Bays SH60 network, Jackett Island work, and various water works).

For a full list of the engineering department’s capital works programs, see pages 43 to 51 of the agenda.

This post will highlight those items that received the most interest from councilors.

Solid waste, landfill, and resource recovery

A decision was required on the continued operation of the Collingwood and Murchison Resource Recovery Centres and whether they should continue to operate from July 2015.

Council resolved to continue with the Murchison operation, but to close the Collingwood centre. The decision was mainly driven by fiscal considerations. However, the closure would be offset by a weekly pick up service (from the same location), whereby rubbish could be loaded into a truck parked at the Collingwood centre, and then shuttled to the Takaka centre.

A thorough and well balanced report was presented to council and can be read at pages 21 to 32 of the Agenda. In summary, the Collingwood centre was heavily subsidised by rates (89%) and was losing money without any prospect of future growth to offset the losses. Basically, it was under used. Given it was only 25km from the Takaka centre, it was logical to consolidate operations with Takaka. Councillors were aware that the closure would provide an inconvenience to some ratepayers (a 50km round trip) so provision for a weekly truck service located at the Collingwood centre was provided for. In my opinion, this seemed a fair compromise. The alternative would have been to increase the charges for using the centre – to enable it to break even. However, the required increases in charges would have been prohibitive.

Street lighting

The council decided to roll out new LED lighting as part of a planned lamp replacement program of 396 lamps across several settlements. The decision was mainly driven by projected long term savings and the fact the additional upfront costs could be absorbed within existing budgets due to the projected savings.

The replacement of 396 high pressure sodium lamps was expected to cost $52,000. Over a period of 20 years, replacement costs would be expected to be around $396,000. For the same 20 year period, LED lights could be expected to cost $241,560. The expected payback period for LED light capital investment was 8 years. In addition, LED lights would provide additional power savings of $20,000 per year. Understandably, the roll out of LED lights was pretty much a no brainer.

By way of background, the district has 2,890 street lights, with the majority of these being high pressure sodium lamps. The total energy use is estimated at 1,037,000 (kilowatt hours) kWh per year. Council spends around $270,000 per year on street lighting energy. This budget is expected to increase in line with future power prices and the development of new subdivisions. NZTA currently subsidise street lighting maintenance and renewals at a rate of 49%.

High pressure sodium lamps have an approximate life of 12,000 kWh or around 3 years before the level of lighting drops below 70% of Lumen output. In contrast, LED lamps have a life expectancy in excess of 100,000 kWh which is equivalent to 20 years of operation at approximately 4000 kWh per year.

The latest LED lighting technology can provide a reduction in energy consumption of up to 70% as well as cost savings in maintenance due to the longer life of LED lighting. However, LED lights are more expensive per unit than high pressure sodium lamps.

Jacket Island

An update report on Jackett Island was provided. The Council is required to maintain the foreshore of the Van Dyke Family Trust for a period of 3 years until January 2017 (see http://www.nzlii.org/nz/cases/NZEnvC/2014/1.html). The Van Dyke Family Trust has initiated a civil claim against the Council in the High Court for costs and diminution of value of their Jackett Island property.

A survey of the Jackett Island foreshore was completed in late March. The results indicate there has been minimal change over the last 3 months to the beach surface and intertidal platform. Damage that was caused to the sandbag wall from Cyclone Lusi was repaired on 7 May 2014 by utilising surplus bags that were recovered from the northern end of the existing wall.

NZTA Agreement

Council has entered into an agreement with the New Zealand Transport Agency (NZTA) for the provision of SH60 Golden Bay network management services from 1 July 2014 to March 2016. The services will be provided for State Highway 60 for the length of 75 km from the Riwaka River Bridge to the end of SH60 at Collingwood.

Agenda and minutes

The agenda and minutes for this meeting are located a http://www.tasman.govt.nz/council/council-meetings/standing-committees-meetings/engineering-services-committee-meetings/?path=/EDMS/Public/Meetings/EngineeringServicesCommittee/2014/2014-07-03.

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