Woolpert 20160108 Lidar point cloud Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar 0.7m NPS Lidar Data Acquisition and Processing Production Task USGS Contract No. G10PC00057 Task Order No. G15PD00091 Woolpert Order No. 75157 CONTRACTOR: Woolpert, Inc. This task is for a high resolution data set of lidar covering approximately 5981 square miles. The lidar data was acquired and processed under the requirements identified in this task order. The data delivered in this task order is compliant with US. Geological Survey National Geospatial Program Lidar Base Specification Version 1.2. Lidar data is a remotely sensed high resolution elevation data collected by an airborne platform. The lidar sensor uses a combination of laser range finding, GPS positioning, and inertial measurement technologies. The lidar systems collect data point clouds that are used to produce highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation. The task required the LiDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters. The final products include classified LAS, four (4) feet pixel raster DEMs of the bare-earth surface in ERDAS IMG Format, and 8-bit intensity images. LAS, DEM, and Intensity data was delivered in 1250 ft x 1250 ft tiles. Each LAS file contains lidar point information, which has been calibrated, controlled, and classified. Additional deliverables include hydrologic breakline data, control data, flight line vectors and tile index provided as ESRI shapefile, lidar processing and survey reports in PDF format, FGDC metadata files for each data deliverable in .xml format, and LAS swath data. Ground conditions: Water at normal levels; no unusual inundation; no snow; leaf off. USGS NGP Base Specifications v1.2 LeicaALS70/Chiroptera II 4 0.7 0.7 2 2 1981/1000 150/125 40 41.0/63.4 272/250 5 1.5 1064 1 0.22/0.5 1443/700 20/15 Mississippi State Plane East Zone NAD83(2011) US Survey Feet GEOID12A/12B 1.18 0.355 120 0.347 0.813 1.4 6 Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as high or low noise. Swath overlap points were identified in these files by adding 16 to the standard classication values yielding overlap default and overlap ground, overlap water, and overlap ignored ground. Flags were then applied to these points and subsequently reclassified to their respective standard classification values 16 1 default/unclassified 2 Bare-earth 7 Low noise 9 Water 10 Ignored ground 17 Bridge 18 High Noise The purpose of this project is for lidar mapping services in support of the USGS for task name Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Task Order 20150207 unknown ground condition Complete As needed -90.866260 -88.286636 32.084610 30.113105 None Lidar LAS 1.4 None United States Mississippi 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. Woolpert mailing and physical address

4454 Idea Center Blvd

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Standard Time Microsoft Windows 7 Version 6.1 (Build 7600); ArcMap 10.2; ArcCatalog 10.2; TerraScan ver. 15.01; TerraModeler ver. 15.01; Geocue 2014.1.21; LP360 2014.1. Approximate size of entire delivery dataset = 3.0TB All formatted data cover the entire area specified for this project and are validated using a combination of commercial lidar processing software, GIS software, and proprietary programs to ensure proper formatting and loading prior to delivery. The lidar data is visually inspected for completeness to ensure that are no void areas or missing data. Compiled to meet 1.18 feet horizontal accuracy at 95 percent confidence level. 1.18 feet Lidar system specifications are available in the project report LAS data covering the Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Task Order was compared to independent survey control points to determine the NVA of the LAS Swath and of the Bare-Earth DEM. In addition, this LAS data was compared to independent VVA points. LAS Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.347 US feet Non vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.177 US feet (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. Bare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.361 US feet Non vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using 0.184 US feet (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines. 0.347 US feet LAS Swath Non-Vegetated Vertical Accuracy (NVA) Tested 0.347 US feet Non vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the TIN using ground points. 0.361 US feet Bare-Earth DEM Non-Vegetated Vertical Accuracy (NVA) Tested 0.361 US feet Non-Vegetated vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open terrain using (RMSEz) x 1.96000 as defined by the National Standards for Spatial Data Accuracy (NSSDA); assessed and reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the DEM. 0.813 US feet Vegetated Vertical Accuracy (VVA) Tested 0.813 US feet at the 95th percentile reported using National Digital Elevation Program (NDEP)/ASPRS Guidelines and tested against the DEM. VVA Errors larger than 95th percentile include: Point 3006, Easting 877698.930, Northing 511196.730, Z-Error 0.901 US feet Point 3049A, Easting 999096.100, Northing 462616.620, Z-Error 0.920 US feet Point 3055, Easting 1076208.030, Northing 373193.260, Z-Error 0.900 US feet Point 3055A, Easting 1076234.340, Northing 373087.770, Z-Error 0.850 US feet Point 3060A, Easting 996995.250, Northing 346375.120, Z-Error 0.940 US feet Point 3062, Easting 961640.000, Northing 384641.660, Z-Error 1.080 US feet Point 3066A, Easting 889758.560, Northing 407986.760, Z-Error 0.861US feet Point 3071A, Easting 685891.180, Northing 386513.930, Z-Error 0.830 US feet Woolpert 20160108 Dayton, OH Woolpert Geospatial Services Lidar dataset 20150128 ground condition Mississippi Coastal QL2 Lidar with 3DEP Extension This data set is the project specified acquired point cloud data. Woolpert 20160108 Dayton, OH Woolpert Geospatial Services Control dataset 20150217 ground condition Mississippi Coastal QL2 Lidar with 3DEP Extension This data set is the project specified acquired ground control and QAQC control data. Geomatics Data Solution 20160108 Dayton, OH Geomatics Data Solution Lidar dataset 20150316 ground condition Mississippi Coastal QL2 Lidar with 3DEP Extension This data set is the project specified acquired point cloud data. Woolpert 20160108 Dayton, OH Woolpert Geospatial Services Lidar dataset 20150128 ground condition Mississippi Coastal QL2 Lidar with 3DEP Extension This data set is the project specified lidar deliverables. Using two Leica ALS70 (lidar) systems on board a Woolpert aircraft, high density data, at a nominal pulse spacing (NPS) of 0.7 meters, were collected for this task order (approximately 5981 square miles). Leica Specs- AGL = 1,981 meters - Aircraft Speed = 150 Knots, Field of View (Full) = 40 degrees, Pulse Rate = 272 kHz, Scan Rate = 41.0 Hz, with an average side lap of 20%. Multiple returns were recorded for each laser pulse along with an intensity value for each return. Thrty-one (31) missions were flown between January 28, 2015 and April 01, 2015. Six (6) Global Navigation Satellite System (GNSS) Base Stations were used in support of the lidar data acquisition. Specific information regarding latitude, longitude, and ellipsoid height to the L1 phase center is included in the lidar processing report. Data for the task order is referenced to the Mississippi State Plane East Zone, NAD83(2011), and NAVD88, in US Survey Feet. The geoid used to reduce satellite derived elevations to orthometric heights was GEOID12A/12B. Once the data acquisition and GPS processing phases are complete, the lidar data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project. The SBET was used to reduce the lidar slant range measurements to a raw reflective surface for each flight line. The coverage was classified to extract a bare earth digital elevation model (DEM) and separate last returns. The ALS70 calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of lidar data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw lidar data is reduced using the refined misalignment angles Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Acquisition 20150128 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time Lidar data was acquired using a Chiroptera II (CHII) sensor owned and operated by GDS. The sensor was mounted in a Leica PAV100 gyro-stabilized mount integrated with a NovAtel SPAN GNSS and LCI-100C IMU. Real time navigation and GNSS/IMU data logging was provided by Leica FlightPro software. Lidar data were logged on the Airborne Hydrography, AB (AHAB) operator console. The aircraft was mobilized and a calibration flight was conducted at Falcon Field Airport, Peachtree City, GA on 15th March, 2015. Project data were acquired on 6 flights between 16th March, 2015 and 26th March, 2015. Acquisition times were tide coordinated such that data were only acquired within 2 hours of predicted low tide. Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Acquisition 20150316 1200 Geomatics Data Solutions Topographic Services mailing and physical address

4128 Ingalls St

San Diego CA 92103 USA (760) 536-6852 The field crew utilized Real-Time Kinematic (RTK) GPS surveying throughout most of the ground control data collection process. Using RTK GPS techniques, observations were performed on a total of 89 LiDAR control points and 470 ground control quality check points. The survey was conducted using a 1-second epoch rate, in a fixed solution RTK mode, with each observation lasting between 60 to 180 seconds. Each station was occupied twice to insure the necessary horizontal and vertical accuracies were being met for this photogrammetric project. Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar ground control and QAQC control Acquisition 20150217 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous coverage throughout the project area. Overlap Flags were applied to Swath overlapping data and subsequently classified to 0. The LAS Swath point cloud data was classified to unclassified (Class 0). The resulting swath deliverables for this task order consist of unclassified LAS files in LAS 1.4 format. Mississippi Coastal QL2 Lidar with 3DEP Extension Lidar Deliverable Processing 20150128 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time Point North American Vertical Datum of 1988(GEOID12A) 0.000100 meters Explicit elevation coordinate included with horizontal coordinates NAD 1983 2011 StatePlane Mississippi East FIPS 2301 Ft US 0.99995 -88.83333333333333 29.5 984250.0 0.0 coordinate pair 0.01 0.01 foot_us D NAD 1983 2011 GRS 1980 6378137.0 298.257222101 USGS/NGTOC mailing and physical address

1400 Independence Rd.

Rolla MO 65401 USA (573) 308-3587 Unknown Unknown Downloadable Data Woolpert prepared the original data as set forth in the Scope of Services, in accordance with reasonable care and due diligence as set forth in this Agreement, however, due to the easily alterable nature of electronic media, files, documents, and other deliverables, Woolpert, Inc. makes no warranties, either expressed or implied, with respect to the accuracy, completeness, merchantability, or fitness for any particular purpose, including, but not limited to, use of any/all data as described within this metadata file, by any user of this data. Any use will be at the end-user’s sole risk. unknown unknown 20160108 Woolpert mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 USA (937) 461-5660 (937) 461-0743 8:00 a.m. to 5:00 p.m. Eastern Time FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time Unclassified Unclassified Unclassified