Map 13 Northern Welsh Marches and Liverpool, 100-Km Grid Square SJ (Axis Numbers Are the Coordinates of the National Grid) © Crown Copyright
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Southport CHORLEY Rochdale WEST LANCASHIRE Bury ROCHDALE BOLTON Bolton Wigan Middleton OLDHAM BURY Oldham WIGAN SEFTON Astley 0 Kirkby 0 Crosby Manchester 4 SALFORD St Helens TAMESIDE Croft Liverpool Stockport Birkenhead KNOWSLEY Warrington TRAFFORD LIVERPOOL Widnes STOCKPORT WIRRAL HALTON 0 8 Knutsford Fernilee 3 Abergele Rhuddlan Neston Ellesmere Port Holywell St Asaph Northwich Flint Macclesfield Buxton Cuddington Connah's Quay VALE ROYAL Cranage Marton FLINTSHIRE Chester Denbigh Winsford Buckley Bylchau Congleton CHESTER Sandbach 0 6 Biddulph 3 Bontuchel Ruthin Eryrys Crewe Alsager Leek Gresford DENBIGHSHIRE Crewe Nantwich Kidsgrove Glasfryn Llanelidan Wrexham Newcastle-under-Lyme WREXHAM Llangollen Whitchurch Mobberley 0 STOKE-ON-TRENT 4 3 Chirk Llanfor Llandrillo Llwynmawr Bowers Tregeiriog Hales Stone Lyneal Uttoxeter Oswestry Wem NORTH SHROPSHIRE Pencraig Trefonen Booley Shebdon OSWESTRY STAFFORD Howle Eyton Stafford 0 Newport 2 Abertridwr Tycrwyn Astley Rugeley 3 Llwydiarth Criggion Eyton Mallwyd Shrewsbury TELFORD AND WREKIN Cannock Burntwood Telford Welshpool SHREWSBURY AND ATCHAM Brownhills Codsall Great Wyrley Llanllugan Manafon Marton Dolfach Broseley Aldridge 0 0 Perton Walsall 3 Carno WOLVERHAMPTON Church Stretton Bridgnorth Wombourne More West Bromwich Kerry Eyton Birmingham Stourbridge DUDLEY Halesowen 300 320 340 360 380 400 The shading indicates the maximum requirements for radon protective measures in any location within each 1-km grid square to satisfy the guidance in Building Regulations Approved Document C. The requirement for an existing building with a valid postal address can be obtained for a small charge from www.ukradon.org. The requirement for a site without a postal address is available through the British Geological Survey GeoReports service, http://shop.bgs.ac.uk/GeoReports/. Level of protection required Settlements Roads National Grid None Chester Motorways 100-km 10-km Basic Primary Roads Other Features Oswestry Full A Roads LOCAL ADMINISTRATIVE DISTRICT Rhuddlan B Roads Water features Bowers Map 13 Northern Welsh Marches and Liverpool, 100-km grid square SJ (axis numbers are the coordinates of the National Grid) © Crown copyright. All rights reserved [Health Protection Agency][100016969][2007] Radon potential classification © Health Protection Agency and British Geological Survey copyright [2007].