SUPPLEMENTARY INFORMATION 1. Site Details Site Name: Coombe Lea RT Site Address: COOMBE LEA, GRAND AVENUE, HOVE, EAST SUSSEX, BN3 2NE National Grid N 529019, Reference: E 104608 Site Ref Number: 79854 Site Type:1 Macro 2. Pre Application Check List Site Selection (for New Sites only) Was a local planning authority mast register available to check Yes No for suitable sites by the operator or the local planning authority? If no explain why: Database not available. Other sources checked. Were industry site databases checked for suitable sites by the Yes No operator: If no explain why: N/A Site Specific Pre-application consultation with local planning authority Was there pre-application contact: No Date of pre-application contact: 08/01/2021 Name of contact: N/A Summary of outcome/Main issues raised: A consultation letter, associated plans and proposed consultation plan were sent to Brighton and Hove City Council on 08/01/2021. A consultation response had not been received at the time of writing. Lines of communication will remain open throughout the application process. Community Consultation Rating of Site under Traffic Light Model: Red Amber Green Outline of consultation carried out: The proposal was rated Amber in accordance with the traffic light consultation model in the Code of Best Practice on Mobile Network Development (published 2016). The pre-application consultation plan adhered to best practice guidance. Pre-application consultation was undertaken with the Council Members for the Ward in which site is located and with the residents of Coombe Lea (84No. apartments). A consultation letter and supporting information was posted or emailed to the consultees on 08/01/2021. 1 Macro or Micro 1 Summary of outcome/main issues raised (include copies of relevant correspondence): Out of the 84No. resident letters sent out, 5No. residents responded to the consultation. The responses received raised various concerns about the proposal and specifically requested additional information on matters that included design, site selection and health. This supplementary statement aims to address the matters that are relevant to determination of the planning application. School/College Location of site in relation to school/college (include name of school/college): The site is not located near to any educational facilities. As such, there were no relevant bodies to consult. Outline of consultation carried out with school/college (include evidence of consultation): N/A Summary of outcome/main issues raised (include copies of main correspondence): N/A Civil Aviation Authority/Secretary of State for Defence/Aerodrome Operator consultation (only required for an application for prior approval) Will the structure be within 3km of an aerodrome or airfield? Yes No Has the Civil Aviation Authority/Secretary of State for Yes No Defence/Aerodrome Operator been notified? Details of response: N/A – applies to applications for Prior Approval. Developer’s Notice Copy of Developer’s Notice enclosed? Yes No Date served: 20/01/2021 2 3. Proposed Development The proposed site: 3.1 The application site is located on the rooftop a building named Coombe Lea which is located on Grand Avenue. The multi-storey rectangular-shaped building is approximately 32m high and in use as a residential apartment block. The building has a traditional brick material finish with a single main roof-level and two plant room structures that sit above the main-level. The building has various protrusions and recesses formed by balconies. The building has associated landscaped grounds and ground-level carpark in front of the east elevation, fronting Grand Avenue. 3.2 The host building forms one of several high-rise apartment blocks located on Grand Avenue. The buildings are similar in form, scale and general appearance. The wider area is predominantly characterised by dense patterns of multi-storey buildings, often in residential use. Church Road is situated a shorth distance to the north of the site with its various retail and financial services of the type typically found on a high street. Hove Beach is approximately 300m to the south of the site. Figure 1. Aerial view of application site (denoted approximately) and local context. Map source: Google. Enclose map showing the cell centre and adjoining cells if appropriate: Network information is provided separately within this application. 3 Type of Structure (e.g. tower, mast, etc): Description: Installation of 6No. antenna apertures across 3No. steel support structures, 3No. 600mm wide dishes and 8No. equipment cabinets all at roof-level, 1No. cabinet at ground-level, plus ancillary works. Ancillary apparatus includes steelwork, fixings and supporting electrical equipment. Please refer to submitted plans for full details. Equipment housing cabinets 3No. Outdoor cabinets (770x770x2100mm) 1No. H3G AMP5930 cabinet (640x600x2165mm) 1No. EE AMP5930 cabinet (640x480x1200mm) 1No. Furo cabinet (775x600x2100mm) 1No. Link AC cabinet (1200x600x1800mm) 1No. 3900A (600X480X1600mm) 1No. Meter cabinet at ground-level (1100x400x1200mm) Overall Height: 36m approx. (top of highest proposed structure) Height of existing building (where applicable): 33.20m approx. (highest part) Equipment Housing: See above section Length: Width: Height: Materials (as applicable): Tower/mast etc – type of material and external Antennas & dishes – white/light grey, made from plastic & colour: steel Support structures – galvanised-steel Equipment housing – type of material and external Cabinets to be coloured light grey or green. colour: Reasons for choice of design, making reference to pre-application responses: Antennas, dishes & supports 3.3 The equipment layout and design are based on the principle of meeting operational requirements of the mobile operators Everything Everywhere (EE) and Three, whilst minimising impact on the appearance of the host building and its surroundings, as far as technical constraints allow. 3.4 The base-station has been designed to accommodate replacement apparatus, allowing provision of 2G, 3G and 4G mobile connections to the surrounding area to continue. It has also been designed to accommodate new 5G technology, introducing ultra-fast mobile connectivity capable of operating the ‘Internet of Things’. This upgraded and replacement infrastructure will provide higher mobile down-load speeds and more reliable, quicker phone connections. There would be increased capacity to provide services to a higher number of people at the same time. 3.5 The number and scale of proposed antennas/dishes is informed by the number of communication services being provided (4G, 5G etc.); the fact that the base-station will be multi-operator meaning that both EE and Three require apparatus; and because of the high technical capability of 5G services. 3.6 The antennas must be allowed to unrestrictedly emit a radio signal, meaning they need to be sited at an elevated position at the edge of the rooftop to enable the radio signal to clear surrounding structures, such as buildings and trees, with the aim of avoiding interference. The radio frequencies that 5G operates at is particularly sensitive to interference from solid objects, which necessitates securing the antennas to elevated steel support frames at the height proposed. 4 3.7 The layout of the antennas is informed by physical constraints of the rooftop and local area, and the outcome of software modelling which positions the antennas in such a way that they collectively provide 360-degree coverage to the surrounding area. Similarly, the dishes must connect to other base-stations in the wider network by microwave link. As such, they require ‘line of sight’ which an unobstructed path to neighbouring base- stations. 3.8 The aforementioned factors have informed the design of the proposed equipment which is of the minimum amount and scale possible, while still meeting structural and radio planning requirements. Equipment cabinets 3.9 The antennas must connect to the proposed equipment housing cabinets by electrical cable feeders. The equipment cabinets, an essential component of the base-station, must be located as close to the antennas as possible in order to minimise electrical power losses during operation. 3.10 The central rooftop location and scale of the proposed cabinets, in the context of the host building, means that they are unlikely to be visible from ground-level. Figure 2. Photograph of host building from Grand Avenue (a) 5 Figure 3. Photograph of host building from Grand Avenue (b) – existing equipment cabinets at street-level Figure 4. Photograph of host building’s rooftop, showing plant room buildings. 6 Figure 5. Photograph of host building’s rooftop, antenna support structures to be behind existing railing Figure 6. 3D image showing approximate layout of proposed antenna clusters. Map source: Google. 7 Technical Information Yes No International Commission on Non-Ionizing Radiation Protection Declaration attached (see below). International Commission on Non-Ionizing Radiation Protection public compliance is determined by mathematical calculation and implemented by careful location of antennas, access restrictions and/or barriers and signage as necessary. Members of the public cannot unknowingly enter areas close to the antennas where exposure may exceed the relevant guidelines. When determining compliance, the emissions from all mobile phone network operators on or near to the site are taken into account. In order to minimise interference within its own network and with other radio networks,