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   "minScale": 0,
   "maxScale": 0,
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     "label": "All non-impervious areas",
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     "groupId": "0",
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    },
    {
     "label": "1 - 20 %",
     "url": "f410ecd3d3e21613f909d4a8fee4d0e6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQElEQVQ4jWNhoDJgoZmB/98e/k+JQYzCtowoBlILsIwaSDFgodwIVDBqIOWAhQpmoIBRAykH8DCElWdUM5BaAADLZwSjyDlJpAAAAABJRU5ErkJggg==",
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     "label": "21 - 40 %",
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     "label": "41 - 60 %",
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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAQElEQVQ4jWNhoDJgoZmBe+Kc/1NikMuivYwoBlILsIwaSDFgodwIVDBqIOWAhQpmoIBRAykH8DCElWdUM5BaAAA/aQX1v+4BKgAAAABJRU5ErkJggg==",
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     "label": "61 - 80 %",
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     "label": "81 - 100 %",
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     "label": "Unclassifiable",
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