Hammersmith Town Hall Extension report PDF - Greater London ...

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egulations. Other features include energy efficient lighting, enhanced controls and variable speed pumps. 57 Based on the information provided, the proposed development does not appear to achieve any carbon savings from energy efficiency alone compared to a 2010 Building Regulations compliant development. 58 Using 2010 Building Regulations compliance software, the applicant should model, and commit to, additional measures that can be adopted to enable the development to exceed 2010 Building Regulations compliance through energy efficiency alone. District heating 59 A single site wide heat network providing heating to all new uses in the development is proposed. This will be fed from a single energy centre. A schematic showing the route of the heat network should be provided. Information on the location, floor area and layout of the energy centre should also be provided. 60 It is not proposed to connect the existing town hall to the district heating network. The applicant should actively pursue connecting the existing town hall into the proposed development. Further details should be provided in this regard Combined heat and power 61 Gas fired combined heat and power plant with an electrical capacity around 220kwe, operating in conjunction with thermal storage, is proposed as the lead heat source for the heat network. Heat load profiles have been provided indicating that the sizing of the unit has been optimised in relation to the new buildings. A reduction in carbon dioxide emissions of 265 tonnes per annum (25%) will be achieved through this second part of the energy hierarchy. 62 The sizing of the combined heat and power unit should be revisited, taking into account connection of the existing town hall building if feasible. Cooling 63 Passive design techniques including solar control glazing and shading measures have been adopted so that the need for active cooling is minimised. Penthouse apartments and commercial areas of the development will be provided with mechanical cooling but high efficiency electric chilling plant will be adopted. Renewable energy technologies 64 A 240 sq.m. photovoltaic panel array is proposed to provide a contribution from renewable energy. A drawing has been provided indicating that the roof area allocated for the panels has been maximised, taking into account overshadowing and use of roof space for other requirements e.g. green roofs. A reduction in regulated carbon dioxide emissions of 10 tonnes per annum (1%) will be achieved through this third element of the energy hierarchy. On a whole energy basis, a reduction of 0.5% from renewable energy is proposed. Overview 65 The estimated regulated carbon emissions of the development are 799 tonnes of carbon dioxide per year after the cumulative effect of energy efficiency measures, combined heat and power and renewable energy has been taken into account. page 12
66 The applicant should provide an estimate of the overall carbon dioxide savings, expressed in tonnes of carbon dioxide per annum and percentages, relative to a 2010 Building Regulations compliant development. Climate change adaptation 67 The London Plan promotes five principles in policy 4A.9 to promote and support the most effective adaptation to climate change. These are to minimise overheating and contribution to heat island effects, minimise solar gain in summer, contribute to flood risk reductions, including applying sustainable drainage principles, minimise water use and protect and enhance green infrastructure. Specific policies cover overheating, living roofs and walls and water. Chapter 5 of the draft replacement London Plan considers climate change adaptation, specifically policies 5.9 through to policy 5.15. 68 The proposals have been designed to reduce carbon dioxide emissions beyond building regulations through energy efficiency measures alone. This includes the use of natural ventilation and techniques to minimise the risks of overheating. Green roofs will be including within the proposals and should be conditioned by Hammersmith & Fulham Council. A commitment to minimising the use of water will should also be conditioned by the Council, in accordance with London Plan policy 4A.16. 69 Regarding water, a rainwater collection and recycling system will be included through the sustainable urban drainage system. Overall the site impermeable surfaces have been reduced. The site is within flood risk zone 3. The flood risk assessment concludes a negligible risk of flooding. The Environment Agency has, however, been consulted. 70 Microclimate matters, biodiversity, air quality and noise impacts will be considered further in discussion with the Council. Transport for London’s comments 71 A series of pre-application meetings regarding various aspects of this application have taken place with Transport for London over the last year. Impact on public transport 72 TfL is satisfied with the trip generation and modal split calculations provided within the transport assessment. Given that the proposals include an additional 320 residential units and almost double the number of employees from 622 to 1,142, there will be a resultant substantial increase in trips on the public transport network. 73 The Hammersmith and City line London Underground station at Hammersmith is already operating at capacity. The transport assessment predicts that there will be over 100 new trips on the London Underground in the AM peak, plus a considerable number across the rest of the day. Therefore in order to mitigate the impact of this development, TfL requests a contribution of £200,000 towards the upgrade of the Hammersmith and City line station including a new ticket office and/or the line upgrades which will increase capacity. This will ensure compliance with London Plan policies 3C.2 Matching development to transport capacity and 3C.13 Improved Underground and DLR services and draft replacement London Plan policies 6.3 Assessing transport capacity and 6.5 Funding Crossrail and other strategically important transport infrastructure. 74 Given the density of the bus network at this point TfL considers that the increase in bus passengers can be catered for on the existing network. However, in order to encourage the use of page 13
Page 1 and 2: planning report PDU/1011/01 22 Dece
Page 3 and 4: Network (ORN). The site has a publi
Page 5 and 6: 18 The proposal includes, 3,612 sq.
Page 7 and 8: space provided by Furnival Gardens
Page 9 and 10: 41 The applicant has committed to l
Page 11: 51 There are also three Assured Per
Page 15 and 16: addition of extra residential cycle
Page 17 and 18: this present stage for the Mayor to

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