{
 "layers": [
  {
   "layerId": 0,
   "layerName": "State Boundaries",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "7d77631315088a3c54bea3ff2391f2cd",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALUlEQVQ4jWNhYGD4z0BFwAKlGalk3n8WwmpIA6MGjho4auCogaMGohpItWoAAFaOA08xGWr1AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 1,
   "layerName": "Chesapeake Bay Watershed",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "029a6f339c19bd956701fe0aae550b52",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALklEQVQ4jWMp3vT/PwOVQK8fIyMLtQyDgVEDRw0cNXDUwFEDaWVgrx8jIzUNBABawwUuO7tpdAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 2,
   "layerName": "Chesapeake Bay Airshed",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "0935d64f88586ca33b056b607e540671",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAALklEQVQ4jWP5/3/ffwYqAUZGJ0YWahkGA6MGjho4auCogaMG0spARkYnRmoaCABYLgSWwGBHdgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  },
  {
   "layerId": 3,
   "layerName": "airshed_dist2",
   "layerType": "Raster Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "High : 50000 - Low : 0",
     "url": "a0a2e3e7665178d3cbe90bde3ae0511b",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAA8CAYAAABmdppWAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAaUlEQVRYhe3W0Q2AMAgA0SNh/xntIuoQ3EcJdICXQ0s0z3k+xJMmBpARMgjqxCMLI+RCVaPFM9zCOtihUAbvX72BhQNHVjW2UAFHFo4bucNndNxL6fArsoVVcDfFAFWPhNcF99rUwesLf+33I64pA87+AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 60,
     "width": 20
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": "Value"
    }
   ]
  },
  {
   "layerId": 4,
   "layerName": "Annual NOx Emissions from Power Plants",
   "layerType": "Feature Layer",
   "minScale": 0,
   "maxScale": 0,
   "legend": [
    {
     "label": "",
     "url": "b8f111093166d27376f2b3aa8595b895",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAACwAAAAbCAYAAAAH+20UAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAoElEQVRYhe2XsQ3DMAwE34AmcJFhAs9EtxlBrX6mwMO48ApJ5Tr8gpAU8OqHcCD4glQwGaW3gJl9lHx3YQDg9XLlbK1jCCukcDQpfKO230vohPl8/MzYcUpn5kpEk8LRSMJRzVeQJ9w2unL722QZD/+9EiOQwtGUEZqvUACg0dl8i2m+wnwr0VtAJYWjmU+Y5ALhalPeCN7fhK3VlSO5fAHSDR+hDsPjPAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "groupId": "0",
     "height": 27,
     "width": 44
    },
    {
     "label": "1990",
     "url": "dae50687335aca9f1e7e718a40395ab8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAM0lEQVQ4je3MMQEAMAgDwQzofbQUw2XoUgEZcwKugCujkqQzY8kaXuiUMGHChAm/sMEWLnxRBuVJWBz0AAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    },
    {
     "label": "2005",
     "url": "9b935bba31902b738a903534637764b2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4jWPJy8v7z0BFwMLAwMAw0WYSVQzLP5IHMZCaYNTAUQNHDRw1cNRAJAPzj+RRzUAAfVMHO01B8SkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    },
    {
     "label": "2012",
     "url": "e7ffd72afcef365d48822f53946db757",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4jWPJy8v7z0BFwMLAwMAwyUqMKoblHXsFMZCaYNTAUQNHDRw1cNRAJAPzjr2imoEAfk0HuPR2MoQAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    },
    {
     "label": "2014",
     "url": "006e80973dab58fd4b6b7368c9db9b0d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAANUlEQVQ4jWPJy8v7z0BFwMLAwMAw6V0FVQzLE+qAGEhNMGrgqIGjBo4aOGogkoF5Qh1UMxAAe20Goq4lpGAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "1",
     "height": 20,
     "width": 20
    },
    {
     "label": "",
     "url": "32509a17db7658316915949db671445b",
     "imageData": "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",
     "contentType": "image/png",
     "groupId": "2",
     "height": 105,
     "width": 62
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    },
    {
     "id": "1",
     "heading": ""
    },
    {
     "id": "2",
     "heading": "Selected fields"
    }
   ]
  }
 ]
}