<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Product: Processed, classified lidar point cloud data tiles in LAS 1.4 format. Geographic Extent of entire 3 county project area: Approximately 1,409 square miles in southeastern Illinois. Dataset Description: The Lidar 2020 Data Acquisition of 3 Counties in Wabash and Embarrass Basin lidar project called for the planning, acquisition, processing, and production of derivative products of QL2+ lidar data to be collected at a nominal pulse spacing (NPS) of 0.5 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane Illinois East Zone Survey Feet, and a vertical datum of NAVD88 (GEOID12B) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to 10,548 individual 2,000-foot x 2,000-foot tiles. Ground Conditions: Lidar was collected from March 30, 2020 through April 10, 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established 18 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 121 independent accuracy checkpoints (67 NVA points and 54 VVA points), were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.</SPAN></P></DIV></DIV></DIV>
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Product: Processed, classified lidar point cloud data tiles in LAS 1.4 format. Geographic Extent of entire 3 county project area: Approximately 1,409 square miles in southeastern Illinois. Dataset Description: The Lidar 2020 Data Acquisition of 3 Counties in Wabash and Embarrass Basin lidar project called for the planning, acquisition, processing, and production of derivative products of QL2+ lidar data to be collected at a nominal pulse spacing (NPS) of 0.5 meters. Project specifications were based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 2.1. The data was developed based on a horizontal datum/projection of NAD83 (2011) State Plane Illinois East Zone Survey Feet, and a vertical datum of NAVD88 (GEOID12B) US Survey Feet. Lidar data was delivered as processed LAS 1.4 files formatted to 10,548 individual 2,000-foot x 2,000-foot tiles. Ground Conditions: Lidar was collected from March 30, 2020 through April 10, 2020 while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Woolpert established 18 ground control points that were used to calibrate the lidar to known ground locations established throughout the project area. An additional 121 independent accuracy checkpoints (67 NVA points and 54 VVA points), were collected and used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.</SPAN></P></DIV></DIV></DIV>
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