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Chapters
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Introduction to DDMS Surveying
DDMS is National Highways’ technical information about the location and condition of all drainage infrastructure on their network.
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The work is usually tendered by the HE Areas, also sometimes known as the Managing Agents and information for the current managing agent for any area can be found online. There are 13 Areas across England split into 6 Regions, areas numbered from 1 to 14 (there is no Area 11) and the areas are now grouped into regions under National Highways.
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