EP10

Flood Risk

63 There was widespread concern about the adequacy of drainage and the risk of flooding, particularly in parts of Braddan, Onchan and Laxey. Environment Policy 10 of the Strategic Plan indicates that where development is proposed on any site where there is a potential risk of flooding, the prospective developer will be required to submit a flood risk assessment, together with details of proposed mitigation measures. This approach is reinforced in Utilities Proposal 6 of the draft Area Plan, which (among other things) requires the incorporation of Sustainable Drainage Systems (SuDS) into new developments, to attenuate the rate of surface water run-off. I consider these policies to be reasonable. Clearly, without adequate mitigation measures, new building should normally be resisted on land which is at serious risk of flooding, or where the proposed development would increase the flood risk elsewhere.

64 In my view, the format of Utilities Proposal 6 could be improved. First, as a Proposal of the Area Plan, I consider that it should be in a bold typeface, to differentiate it from the supporting text. (The same applies to a number of other policies e.g. Transport Policy 2, and Utilities Policies 2 and 5). Second, there appears to be an error of syntax at the start of the second sentence of Utilities Proposal 6, which should perhaps read 'Strategies to achieve this will include …'. Third, the third bullet point of this Proposal introduces SuDS. Subsequent bullet points describe features of SuDS, and are therefore subordinate to the third bullet point. For clarity, I consider that they should be indented. I recommend that the draft Area Plan be modified accordingly.

Sewage Treatment

65 There was also some public concern about the adequacy of the sewerage system, both in terms of its capacity to accommodate the effluent from proposed residential development areas, and in terms of the current practice of discharging untreated sewage into the sea. Infrastructure Policy 1 of the Strategic Plan indicates that developments entailing the erection of multiple dwellings should take place only on sites that will ultimately be connected to the IRIS system, which takes sewage to a treatment works at Meary Veg. (IRIS is an acronym for Integration and Recycling of the Island's Sewage). However, as long ago as 2006/7, a review was undertaken to decide whether to continue with the IRIS strategy. This concluded that it would be beneficial to adopt a regional sewage treatment strategy (RSTS) for those settlements that were not already connected to the IRIS system, including Laxey, Baldrine and settlements in the Central Valley. To that extent, Infrastructure Policy 1 of the Strategic Plan is now out of date.

66 I understand that a planning application will soon be submitted for the development of a local sewage treatment facility for Laxey. Feasibility studies for the provision of a similar facility to serve Baldrine are ongoing. A replacement sewage works at Ballagarey, serving part of the Central Valley became operational in 2018. However, capacity limitations mean that planned development in Crosby is likely to have to rely on standalone sewage treatment for the time being, until the existing treatment works is replaced as anticipated in 2022. The Programme for Government (2016-2021) indicates an intention to complete the regional sewage treatment infrastructure within the lifetime of the present administration.

67 It seems to me that these considerations should be taken into account in the allocation and phasing of land for development. I will return to this matter when considering the draft Area Plan's proposals for housing.

Electricity

Renewable Energy

68 Peel Energy considered that the Area Plan should contain a detailed and specific chapter on renewable energy, providing measurable criteria against which applications for the development of renewable power generating facilities would be assessed. They cited the States of Jersey Island Plan 2011, which includes such material. And they pointed out that a Climate Change Emergency has recently been declared on the Isle of Man; that a Climate Change Bill is soon to be presented to Tynwald; and that there has been strong public support for the Government's Climate Change Mitigation Strategy. They argued that, in failing to provide detailed guidance on renewable power generation, the Area Plan was inconsistent with the Strategic Plan; and that since the Area Plan post-dated the Strategic Plan, its largely negative provisions would prevail.

69 Energy Policy 4 of the Strategic Plan applies to development proposals for renewable energy generated by wind, water, tidal or solar power. It indicates that any such proposals will be judged against that Plan's environmental objectives. Proposals for wind, water or tidal power would need to be supported by an Environmental Impact Assessment. The supporting text indicates that renewable energy schemes will be given similar scrutiny as is gi