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 "layers": [
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   "layerName": "Hazard",
   "layerType": "Raster Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "H1 - generally safe for people, vehicles and buildings",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQElEQVQ4jWNhoDJgoZmB81Zd/0+JQUlhmowoBlILsIwaSDFgodwIVDBqIOWAhQpmoIBRAykH8DCElWdUM5BaAAD9XAUzDABvhwAAAABJRU5ErkJggg==",
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    {
     "label": "H2 - unsafe for small vehicles",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQElEQVQ4jWNhoDJgoZmB+178/0+JQU4SjIwoBlILsIwaSDFgodwIVDBqIOWAhQpmoIBRAykH8DCElWdUM5BaAADPVASt7WVTRgAAAABJRU5ErkJggg==",
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     "label": "H3 - unsafe for vehicles, children and the elderly",
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     "groupId": "0",
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    },
    {
     "label": "H5 - unsafe for vehicles and people. All buildings vulnerable to structural damage. Some les robust building types vulnerable to failure",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQElEQVQ4jWNhoDJgoZmB/1+v/0+JQYyigYwoBlILsIwaSDFgodwIVDBqIOWAhQpmoIBRAykH8DCElWdUM5BaAADS4wS5NYiP9wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
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    {
     "label": "H6 - unsafe for vehicles and people. All building types considered vulnerable to failure",
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   ],
   "legendGroups": [
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}