Immingham Scunthorpe Grimsby Brigg NORTH EAST LINCOLNSHIRE Cleethorpes Waltham Caistor Tetney 0 0 4 Market Rasen Louth WEST LINDSEY Mablethorpe Ingham Withern 0 8 3 Lincoln EAST LINDSEY Washingborough Horncastle Ingoldmells Spilsby Waddington Skegness 0 6 3 Coningsby Stickney NORTH KESTEVEN Wrangle Sleaford Boston Holkham Hunstanton 0 BOSTON 4 3 Grantham Horbling Dersingham Fakenham Pinchbeck Holbeach Harpley SOUTH KESTEVEN Spalding SOUTH HOLLAND 0 Bourne King's Lynn 2 3 Dereham Market Deeping Wisbech KING'S LYNN AND WEST NORFOLK Swaffham Stamford RUTLAND Hethersett Downham Market Wymondham 0 CITY OF PETERBOROUGH BRECKLAND 0 3 Peterborough March Attleborough Yaxley Feltwell Oundle CORBY Littleport Brandon Ramsey Chatteris Sawtry EAST NORTHAMPTONSHIRE Thetford 500 520 540 560 580 600 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 Lincoln Motorways 100-km 10-km Basic Primary Roads Other Features Spalding Full A Roads LOCAL ADMINISTRATIVE DISTRICT Holbeach B Roads Water features Spilsby Map 15 Lincolnshire and the Wash, 100-km grid square TF (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].