Quantum Spatial 2016 Lidar point cloud Geographic Extent: Pike and Scott Counties in western Illinois, covering approximately 1,100 total square miles. Dataset Description: The Pike and Scott Counties 2015 LiDAR project called for the planning, acquisition, processing and derivative products of LIDAR data to be collected at an aggregate nominal pulse spacing (NPS) of 0.5 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane Coordinate System Illinois West Zone, US survey feet and vertical datum of NAVD1988 (Geoid 12B), US survey feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.4 Files formatted to 7,998 individual 2,000-foot x 2,000-foot tiles. Corresponding 2-foot intensity image and 2-foot bare earth DEM tiles were created with the same 2,000-foot x 2,000-foot tile schema. Tiles names follow the US National Grid naming schema. Continuous breaklines were produced in Esri shapefile format. A mosaic of the 2-foot bare earth raster DEM tiles was also produced in Esri grid format. Ground Conditions: LiDAR was collected in winter of 2015 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, Quantum Spatial established 42 calibration control points in order to calibrate the LIDAR to known ground locations established throughout the project area. The accuracy of the data was checked with 58 NVA points and 47 VVA points (105 total QC checkpoints). Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEMs. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2-foot cell size. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2-foot cell size. USGS-NGP Base Specification v1.2 Optech Orion H300 5 0.49 4.22 0.49 4.22 1400 130 29 68.0 275 4 0.41 1064 1 0.25 724.13 30 g2012bu0.bin 0.196 0.076 58 0.077 58 0.144 47 1.4 6 Withheld (ignore) points were identified in these files using the standard LAS Withheld bit Swath "overage" points were identified in these files using the standard LAS overlap bit 16 1 Processed, but Unclassified 2 Bare-Earth Ground 3 Low Vegetation 4 Medium Vegetation 5 High Vegetation 6 Man-Made Structures 7 Low Noise 9 In-land Water 10 Ignored Ground 17 Bridge Decks 18 High Noise USGS Contract: G10PC00026 Task Order Number: G15PD01036 CONTRACTOR: Quantum Spatial Lidar data were acquired and calibrated by Quantum Spatial. All follow-on processing was completed by the prime contractor. 20150426 20150514 ground condition Complete None planned -91.3782122879594 -90.2963442570292 39.8498271859884 39.3895295689346 1955999.99275266 2259999.99283377 1159999.9829334 991999.982889957 None Elevation data Lidar Hydrology None United States US Illinois IL Pike County Scott County No restrictions apply to this data. None. However, users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Quantum Spatial, Data Acquisition Department Joel Burroughs mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 jburroughs@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. MicroStation Version 8; TerraScan Version 15; TerraModeler Version 15; GeoCue Version 2014.1.21.1; Esri ArcGIS 10.3; Global Mapper 16; Leica Cloud Pro 1.2; Windows 10 Operating System \\PSIHQ_NX3200\Projects\Projects\26869_Pike_Scott_County_USGS 897 GB and \\matrix\matrix\LIDAR\26869_NRCS_Pike_Scott_Counties 8.95 TB Data cover the entire area specified for this project. These raw LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes Nonvegetated Vertical Accuracy specifications. The specifications require that only raw Nonvegetated Vertical Accuracy (NVA) be computed for raw lidar point cloud swath files. The raw NVA was tested with 58 independent survey points distributed throughout the project area and located in open terrain. These checkpoints were not used in the calibration or post-processing of the lidar point cloud data. Specifications for this project require that the raw NVA be 19.6 cm or better AccuracyZ at 95 percent confidence level. The specifications require that Nonvegetated Vertical Accuracy (NVA) be computed for DEM files. The NVA was tested with 58 independent survey points distributed throughout the project area and located in open terrain. These checkpoints were not used in the calibration or post-processing of the lidar point cloud data. Specifications for this project require that the NVA be 19.6 cm or better AccuracyZ at 95 percent confidence level. The specifications require that Vegetated Vertical Accuracy (VVA) be computed for DEM files. The VVA was tested with 47 independent survey points distributed throughout the project area and located in vegetated terrain. These checkpoints were not used in the calibration or post-processing of the lidar point cloud data. Specifications for this project require that the VVA be 29.4 cm or better at the 95th percentile. 0.076 The raw NVA was tested using 58 independent survey points located in open terrain. The surveyed checkpoints were distributed throughout the project area and surveyed using GNSS procedures and methodologies that provide reliable and consistent results to meet the project's accuracy requirements. Please see the "Survey Accuracy Requirements" and "Field Methodology" sections in the Survey Report for more information. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the unclassified lidar surface were then compared to the elevation values of the surveyed control. The RMSEz was computed to be 0.039 meters (0.126 feet) and AccuracyZ to be 0.076 meters (0.248 feet). This meets the required AccuracyZ value of 19.6 cm raw NVA at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. 0.077 The NVA was tested using 58 independent survey points located in open terrain. The surveyed checkpoints were distributed throughout the project area and surveyed using GNSS procedures and methodologies that provide reliable and consistent results to meet the project's accuracy requirements. Please see the "Survey Accuracy Requirements" and "Field Methodology" sections in the Survey Report for more information. Elevations from the DEM surface were measured for the x,y location of each check point. Elevations interpolated from the DEM surface were then compared to the elevation values of the surveyed control. The RMSEz was computed to be 0.039 meters (0.128 feet) and AccuracyZ to be 0.077 meters (0.252 feet). This meets the required AccuracyZ value of 19.6 cm NVA at 95 percent confidence level using (RMSEz * 1.9600) as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. 0.144 The VVA was tested using 47 independent survey points located in vegetated terrain. The surveyed checkpoints were distributed throughout the project area and surveyed using GNSS procedures and methodologies that provide reliable and consistent results to meet the project's accuracy requirements. Please see the "Survey Accuracy Requirements" and "Field Methodology" sections in the Survey Report for more information. Elevations from the DEM surface were measured for the x,y location of each check point. Elevations interpolated from the DEM surface were then compared to the elevation values of the surveyed control. The VVA was computed to be 0.144 meters (0.474 feet). This meets the required value of 29.4 cm VVA at 95th percentile level using the 95th percentile of the absolute value of all vertical errors in all combined vegetation classes as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. Quantum Spatial 20160210 Lexington, KY Quantum Spatial external hard drive 20151114 20160113 ground condition PikeScottIL_2015_LiDAR_gnd_ctrl This data source was used (along with the airborne GPS/IMU Data) to aid in the georeferencing of the lidar point cloud data. Quantum Spatial 2016 Lidar digital data Lexington, KY Quantum Spatial external hard drive 20151122 20151203 ground condition PikeScottIL_2015_LiDAR_Data This data source was used to populate the lidar point cloud data. Quantum Spatial 20160210 Lexington, KY Quantum Spatial external hard drive 20151114 20160113 ground condition PikeScottIL_2015_LiDAR_gnd_ctrl This data source was used to QC and vertically adjust the lidar point cloud data. Lidar Pre-Processing: Airborne GPS and IMU data were merged to develop a Single Best Estimate (SBET) of the lidar system trajectory for each lift. Lidar ranging data were initially calibrated using previous best parameters for this instrument and aircraft. Relative calibration was evaluated using advanced plane-matching analysis and parameter corrections derived. This was repeated iteratively until residual errors between overlapping swaths, across all project lifts, was reduced to acceptable levels. Data were then block adjusted to match surveyed calibration control. Raw data NVA were checked using independently surveyed checkpoints. Swath overage points were identified and tagged within each swath file. PikeScottIL_2015_LiDAR_gnd_ctrl 2016 LiDAR datasets with USGS classifications Quantum Spatial mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Lidar Post-Processing: The calibrated and controlled lidar swaths were processed using automatic point classification routines in proprietary software. These routines operate against the entire collection (all swaths, all lifts), eliminating character differences between files. Data were then distributed as virtual tiles to experienced lidar analysts for localized automatic classification, manual editing, and peer-based QC checks. Supervisory QC monitoring of work in progress and completed editing ensured consistency of classification character and adherence to project requirements across the entire project area. All classification tags are stored in the original swath files. After completion of classification and final QC approval, the NVA and VVA for the project are calculated. Sample areas for each land cover type present in the project area were extracted and forwarded to the client, along with the results of the accuracy tests. Upon acceptance, the complete classified lidar swath files were delivered to the client. PikeScottIL_2015_LiDAR_gnd_ctrl PikeScottIL_2015_LiDAR_Data 2016 PikeScottIL_2015_LiDAR_Data Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Classified LAS Processing: The bare earth surface is then manually reviewed to ensure correct classification on the Class 2 (Ground) points. After the bare-earth surface is finalized, it is then used to generate all hydro-breaklines through heads-up digitization. All ground (ASPRS Class 2) LiDAR data inside of the Lake Pond and Double Line Drain hydro flattening breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. A buffer of 3 feet was also used around each hydro-flattened feature to classify these ground (ASPRS Class 2) points to Ignored ground (ASPRS Class 10). All Lake Pond Island and Double Line Drain Island features were checked to ensure that the ground (ASPRS Class 2) points were reclassified to the correct classification after the automated classification was completed. All bridge decks were classified to Class 17. Upon completion of the bare earth clean-up, automated classification was completed on the dataset to complete final requested classification of the dataset. These classes include: Class 3 - Low vegetation (any default points found within 0.5 - 5' of the final bare earth surface); Class 4 - Medium vegetation (any default points found within 5 - 20' of the final bare earth surface); Class 5 - High vegetation (any default points found above 20' of the final bare earth surface); Class 6 - Man-made features (any default points that meet the criteria for a building, structure inside of a water feature, etc.). All overlap data was processed through automated functionality provided by TerraScan to classify the overlapping flight line data to approved classes by USGS. The overlap data was identified using the Overlap Flag, per LAS 1.4 specifications. All data was manually reviewed and any remaining artifacts removed using functionality provided by TerraScan and TerraModeler. Global Mapper was used as a final check of the bare earth dataset. GeoCue was then used to create the deliverable industry-standard LAS files for both the All Point Cloud Data and the Bare Earth. Quantum Spatial proprietary software was used to perform final statistical analysis of the classes in the LAS files, on a per tile level to verify final classification metrics and full LAS header information. PikeScottIL_2015_LiDAR_qc_ctrl PikeScottIL_2015_LiDAR_Data 2016 Classified LAS Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Hydro-Flattened Breakline Creation: Class 2 LiDAR was used to create a bare earth surface model. The surface model was then used to heads-up digitize 2D breaklines of inland streams and rivers with a 100 foot nominal width and Inland Ponds and Lakes of 2 acres or greater surface area. Elevation values were assigned to all Inland Ponds and Lakes, Inland Pond and Lake Islands, Inland Stream and River Islands, using TerraModeler functionality. Elevation values were assigned to all Inland streams and rivers using Quantum Spatial proprietary software. All ground (ASPRS Class 2) LiDAR data inside of the collected inland breaklines were then classified to water (ASPRS Class 9) using TerraScan macro functionality. A buffer of 3 feet was also used around each hydro-flattened feature. These points were moved from ground (ASPRS Class 2) to Ignored Ground (ASPRS Class 10). The breakline files were then translated to Esri shapefile format using Esri conversion tools. PikeScottIL_2015_LiDAR_qc_ctrl PikeScottIL_2015_LiDAR_Data 2016 Hydro-Flattened Breaklines Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Hydro-Flattened Bare-Earth Raster DEM Creation: Class 2 LiDAR in conjunction with the hydro breaklines were used to create a 2-foot Raster DEM. Using automated scripting routines within ArcMap, an ERDAS Imagine .IMG file was created for each tile. Each surface is reviewed using Global Mapper to check for any surface anomalies or incorrect elevations found within the surface. PikeScottIL_2015_LiDAR_qc_ctrl PikeScottIL_2015_LiDAR_Data 2016 Hydro-Flattened Bare-Earth Raster DEMs Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Intensity Image Creation: GeoCue software was used to create the deliverable Intensity Images with a 2-foot cell size. All overlap classes were ignored during this process. This helps to ensure a more aesthetically pleasing image. PikeScottIL_2015_LiDAR_qc_ctrl PikeScottIL_2015_LiDAR_Data 2016 Intensity Images Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Hydro-Flattened Bare-Earth DEM Mosaic Creation: After final surface acceptance, a mosaic of the 2-foot bare-earth raster DEM files was created using automated scripting routines within ArcMap, an Esri Grid format mosaic was created. The surface was reviewed for completeness to ensure all tiles were included in the mosaic. PikeScottIL_2015_LiDAR_qc_ctrl PikeScottIL_2015_LiDAR_Data 2016 Hydro-Flattened Bare-Earth Raster DEM Mosaic Quantum Spatial Paul Bishop mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 pbishop@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Point Point State Plane Coordinate System 1983 1202 0.9999411764705882 -90.16666666666667 36.66666666666666 2296583.333333333 0.0 coordinate pair 0.01 0.01 survey feet North American Datum of 1983 (2011) Geodetic Reference System 80 6378137.0 298.257222101 North American Vertical Datum of 1988 (Geoid 12B) 0.01 feet Explicit elevation coordinate included with horizontal coordinates 20160727 Quantum Spatial Sarah Zibart mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 szibart@quantumspatial.com Monday through Friday 8:00 AM to 5:00 PM (Eastern Time) If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 None. None. None. Unclassified NONE