Photo Science, A Quantum Spatial Company 2014 raster Geographic Extent: Shenandoah Area of Interest in Virginia, covering approximately 1512 square miles. Dataset Description: The Shenandoah, VA LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1. The data was developed based on a horizontal projection/datum of Virginia State Plane North Zone coordinate System (FIPS 4501), NAD83, feet and vertical datum of NAVD1988 (GEOID12A), feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.2 Files formatted to 2620 individual 5000ft x 5000ft tiles, and corresponding 2.5 foot gridded Hydro Flattened Raster DEM Files tiled to the same 5000ft x 5000ft schema, 1 ESRI GeoDatabase containing 2 foot Contours, tiled Intensity Images, and Hydro-Flattening Breaklines in ESRI Shapefile format. Ground Conditions: LiDAR was collected in 2014, 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, Photo Science established a total of 40 ground control points and 100 QC points that were used to calibrate the LIDAR to known ground locations established throughout the Shenandoah, Virginia project area. USGS-NGP Base Lidar Specification v1.0 Leica ALS 70 and Optech Gemini 4 0.66 1.51 2134 140 20.0 31.3 256.8 4 0.48 1064 1 0.22 1553.42 9.72% NAD_1983_2011_StatePlane_Virginia_North_FIPS_4501_Feet National Geodetic Survey (NGS) Geoid12A 2.0 0.301 0.279 0.611 Bare Earth and Low Grass 0.186 Forested, Fully Covered by Trees 0.491 High Grass, Weeds, and Crops 0.894 Urban Areas 0.185 1.2 1 Withheld (ignore) points were identified in these files using the standard LAS Withheld bit. Swath "overage" points were identified in these files by adding 16 to the standard classification values. 8 1 Processed, but Unclassified 2 Bare earth ground 6 Building 7 Noise 9 In-land Water 10 Ignored Ground 17 Overlap Default (Unclassified) 18 Overlap Bare-earth ground 25 Overlap In-land Water Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2.5 foot cell size. These raw lidar point cloud data were used to create classified lidar LAS files, intensity images, 3D breaklines, hydro-flattened DEMs as necessary. USGS Contract No. G10PC00026 CONTRACTOR: Photo Science, A Quantum Spatial Company Ground Control Points were acquired and calibrated by Photo Science, A Quantum Spatial Company All Lidar data acquisition, calibration, and follow-on processing were completed by the prime contractor. 20140118 20140409 ground condition Complete None planned -79.0350370198482 -77.5856345856973 39.1997450578364 38.1698305944219 11330000.000000 11745000.000000 7120000.000000 6745000.000000 None model LAS Point Cloud remote sensing Elevation data Lidar Hydrology None Virginia Shenandoah Albemarle County Culpeper County Fauquier County Frederick County Greene County Madison County Orange County Page County Rappahannock County Rockingham County Shenandoah County Spotsylvania County Stafford County Warren County Hampshire County Hardy County No restrictions apply to these 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 it's limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. Photo Science, A Quantum Spatial Company, Data Acquisition Department Michael Shillenn mailing and physical

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Lexington KY 40503 USA 859-277-8700 859-277-8901 mshillenn@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. Photo Science, A Quantum Spatial Company, flew the LiDAR and processed the data. MicroStation Version 8; TerraScan Version 14; TerraModeler Version 14; GeoCue Version 2013.1.45.1; ESRI ArcGIS 10.1; Global Mapper Version 15.2; ALS Post Processor Version 2.75 Build #25; Windows 7 Operating System \\psihq_nx3200\\Projects\7505_079_ShenandoahVA\ 390 GB and \\Matrix\LIDAR\7505_079_USGS_Shenandoah\ 2.16 TB Classified LAS files were tested by Photo Science for both vertical and horizontal accuracy. All data is seamless from one tile to the next, no gaps or no data areas. Datasets contain complete coverage of tiles. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. There are no void areas or missing data. The raw point cloud is of good quality and data passes Fundamental Vertical Accuracy specifications. The specifications require that only Fundamental Vertical Accuracy (FVA) be computed for raw lidar point cloud swath files. The vertical accuracy was tested with 28 independent survey located in open terrain. These check points were not used in the calibration or post processing of the lidar point cloud data. The survey checkpoints were distributed throughout the project area. Specifications for this project require that the FVA be 24.5 cm or better AccuracyZ at 95 percent confidence level. 0.301 feet AccuracyZ at 95 percent Confidence Interval The FVA was tested using 28 independent survey located in open terrain. The survey checkpoints were distributed throughout the project area. The 28 independent check points were surveyed using GPS techniques. See survey report for additional survey methodologies. Elevations from the unclassified lidar surface were measured for the x,y location of each check point. Elevations interpolated from the lidar surface were then compared to the elevation values of the surveyed control. The RMSE was computed to be 0.153 feet. AccuracyZ has been tested to meet 24.5 cm Fundamental Vertical Accuracy at 95 Percent confidence level using RMSE(z) x 1.9600 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASRPS Guidelines. Photo Science, A Quantum Spatial Company. 2014 vector digital data and tabular data Lexington, KY Photo Science, A Quantum Spatial Company CD-ROM 20140118 20140409 ground condition Shenandoah_VA_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. Photo Science, A Quantum Spatial Company. 2014 vector digital data and tabular data Lexington, KY Photo Science, A Quantum Spatial Company 50 online 2014 ground condition Shenandoah_VA_LiDAR_qc_ctrl This data source was used (along with the lidar intensity imagery) to QC and vertically adjust the lidar point cloud data. Photo Science, A Quantum Spatial Company 2014 lidar data Photo Science, A Quantum Spatial Company 2014 online 20140118 20140409 ground condition Shenandoah_VA_Lidar_Data This data source was used to populate the lidar point cloud data. Hydro Flattening Raster DEM Process: Class 2 LiDAR in conjunction with the hydro breaklines were used to create a 2.5 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. Shenandoah_VA_lidar_gnd_ctrl Shenandoah_VA_Lidar_Data 2014 Hydro Flattened Raster DEMs Photo Science, A Quantum Spatial Company mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 rgriffin@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 4501 38.03333333 39.20000000 -78.50000000 37.66666667 11482916.66666666 6561666.66666667 coordinate pair 0.01 0.01 feet North American Datum of 1983 Geodetic Reference System 80 6378137 298.257222101 North American Vertical Datum of 1988 0.01 feet Explicit elevation coordinate included with horizontal coordinates 20140620 Photo Science, A Quantum Spatial Company Ryan Elizabeth Bowe, GISP mailing and physical

523 Wellington Way

Lexington KY 40503 USA 859-277-8700 859-277-8901 rbowe@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