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     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAcklEQVQ4jWNhoDJgobWBRmSacw6bgUYiDAKbtBmUeEkx6SrDvc9vGD74wQxFcaE2gxJvJkMQHykGTmdYx3AQ4UDah+GogaMGjhpI0MCrDPc+T2dYR5IBVxnufcZl4Lk3DB/8kDM6CQBr8YUiQS6gehgCADo3GPxVuZYnAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "GALAVANIZED_STEEL"
     ]
    },
    {
     "label": "Galvanized Iron",
     "url": "ee33f1504355d4660ce768760f059851",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAcklEQVQ4je3UMQrAIAwFUAcnwU45iHgQD9uDSM7g/Dchc6eWCpYS0c2/hcAjBBJrJseuBuOgk3tgdM6dROQ1EoAqIulGmwmJyIcQDg3IzKaU8tTLd7jBDW7wFwRQmVkFAKhfYBaR9D50Rbrvq2mMZvoOL70TImydQG8DAAAAAElFTkSuQmCC",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "GALVANIZED_IRON"
     ]
    },
    {
     "label": "Lead",
     "url": "c791c35f3b25541e6ea7c196b4d2a5a7",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAbklEQVQ4jWNhoDJgobWBRmSacw6bgUYyDAybbBgYeEkx6QgDw+cnDAx+MENRXGjDwMDbx8DAR4qBRQwMDCuQ+DQPw1EDRw0cNZCggUcYGD4XkWjAEQaGz7gMPPeEgcFvBQNZAGvxhSJBLqB6GAIAzEMQdDYtcisAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "LEAD"
     ]
    },
    {
     "label": "Plastic, Unspecified",
     "url": "31cd77abe82c2f7ec594ed8f66002515",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAcUlEQVQ4jWNhoDJgobWBRmSacw6bgUbysgybHG0ZeEkxaf9hhs8PHzP4wQxFcaGjLQPv/EkMfKQYmJjHwLBgGYJP8zAcNXDUwFEDCRq4/zDD58Q80gzYf5jhMy4Dzz18zOCHnNFJAFiLLxQJcgHVwxAArosXqz2GjV0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PLASTIC_UNSP"
     ]
    },
    {
     "label": "Plastic, Unspecified Polytubing",
     "url": "4ea8051979aa4dd36b8dc0cf741e9de5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAbklEQVQ4jWNhoDJgobWBRmSacw6bgUYMIgKbGLSVeEky6uq9zwxvPvjBDEV1obYSL0NmEB9JBk5fx8BwEO5A2ofhqIGjBo4aSNjAq/c+M0xfR5oJV+99xmXgOYY3H/yQMzoJAGvxhSJBLqB6GAIAMl0Y/JnWDHcAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PLASTIC_UNSP_POLYTUBUING"
     ]
    },
    {
     "label": "Plastic, PVC (Polyvinyl Chloride)",
     "url": "1defc27b3cd739a35d570413f09b7e7d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAdElEQVQ4jWNhoDJgobWBRmSacw6bgUby8vKbHB0deUkxaf/+/Z8fPnzoBzMUxYWOjo688+fP5yPFwMTERIYFCxbA+TQPw1EDRw0cNZCggfv37/+cmJhIkgH79+//jMvAcw8fPvRDzugkAKzFF4oEuYDqYQgAcj4ezRtF0F0AAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PLASTIC_POLYVINYL_CHLORIDE"
     ]
    },
    {
     "label": "Plastic, Polybutylene",
     "url": "329f85ff8d59fbeb66c5403d051563c2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAdElEQVQ4jWNhoDJgobWBRmSacw6bgUaikjybdEykeUkx6cqZp59fP//iBzMUxYU6JtK8WQ32fKQYOK3hIMP+zTfhfJqH4aiBowaOGkjQwCtnnn6e1nCQJAOunHn6GZeB514//+KHnNFJAFiLLxQJcgHVwxAAxxsgwlhfvrAAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PLASTIC_POLYBUTALYN"
     ]
    },
    {
     "label": "Plastic, Polyethylene",
     "url": "229ad68e1600b5369c6c2a1ff3dc8a6d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAdElEQVQ4jWNhoDJgobWBRmSacw6bgUY8/JKbpOVMeEkx6emjM5+/fHzuBzMUxYXScia89l4NfKQYeHBbA8PNy5vhfJqH4aiBowaOGkjQwKePznw+uK2BJAOePjrzGZeB5758fO6HnNFJAFiLLxQJcgHVwxAANFQhHuHG9rkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "PLASTIC_POLYETHYLENE"
     ]
    },
    {
     "label": "Cannot Be Determined, Cannot Distinguish Material",
     "url": "9efa47338718e681e5c3ef79551358ac",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAdElEQVQ4jWNhoDJgobWBRmSacw6bgUbCwsKbNDQ0eEkx6caNG5/fvn3rBzMUxYUaGhq8iYmJfKQYOH/+fIajR4/C+TQPw1EDRw0cNZCggTdu3Pg8f/58kgy4cePGZ1wGnnv79q0fckYnAWAtvlAkyAVUD0MA3Asg1E2utNkAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "CBD_CANNOT_DISTINGUISH"
     ]
    },
    {
     "label": "Cannot Be Determined, Pipe Buried",
     "url": "0792a6b13c3c94554b48505f86c7c03c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAdElEQVQ4jWNhoDJgobWBRmSacw6bgUaCnGyblEW4eEkx6e6bb5/ff//lBzMUxYXKIly8obrSfKQYuPryU4Yzj3/B+TQPw1EDRw0cNZCggXfffPu8+vJTkgy4++bbZ1wGnnv//ZcfckYnAWAtvlAkyAVUD0MAzcgiXrC7RBMAAAAASUVORK5CYII=",
     "contentType": "image/png",
     "groupId": "0",
     "height": 20,
     "width": 20,
     "values": [
      "CBD_BURIED"
     ]
    }
   ],
   "legendGroups": [
    {
     "id": "0",
     "heading": ""
    }
   ]
  }
 ]
}