Surdex Corporation Unpublished Material Unknown vector digital data This project combines the varied interests of the NRCS, USGS, MO-DNR, USACE & Arkansas Game & Fish to collect detailed ground elevation data from Aerial LiDAR Sensors for approximately 10,008 Square Miles into a unified collection and processing project to benefit the US Government. These partners require 0.7-meter nominal point spacing (USGS Level 2) high-resolution digital elevation data developed from Aerial LiDAR collection in the following Missouri and Arkansas Counties: Cape Girardeau, Stoddard, Mississippi, Lauderdale, New Madrid, Pemiscot, Poinsett, Craighead, Greene, Crittenden, Cross, St Francis, Lee, Monroe, Phillips and Desha. The areas to be collected may only cover the portions of the counties without existing data. These data will then be used to generate digital elevation models and contours for use in hydraulic/hydrologic models and other purposes to include conservation planning activities and environmental assessments. This 1-meter Imagine Grid bare-earth DEM data was generated for Stoddard and Mississippi Counties in MO from the classified LAS data. To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments, and hydrologic modeling. LAS and bare earth DEM data products are suitable for 1 foot contour generation. DEM points in Imagine Grid Format Optech Orion USGS-NGP Base LiDAR Specifications v1.0 4 0.70 2.07 0.70 2.07 1900 140 32 52.0 200 10 3 1064 1 0.22 1090 20 NAD_1983_UTM_Zone_16N_meters National Geodetic Survey (NGS) Geoid12A. The GEOID12A model is intended to transform between NAD 83 (2011/PA11/MA11) and the respective vertical datums for the different regions, including NAVD88, GUVD04, ASVD02, NMVD03, PRVD02 and VIVD09. 0.092m 0.045m RMSEz, 0.088m 95% CL 22 0.093m RMSEz, 0.181m 95% CL 0.245m 95th Percentile Hard Surface 0.185m 95th Percentile Grass 0.266m 95th Percentile Trees 0.266m 95th Percentile Urban 0.177m 95th Percentile 1.2 17 11 11 1 2 Ground 20140221 20140222 20140224 20140313 20140320 20150213 20150214 ground condition Complete Unknown -90.06955825 -88.98932557 37.17706771 36.50614836 LiDAR Digital Elevation Data State Missouri County Stoddard-Mississippi unknown unknown Missouri NRCS State Office Elizabeth Cook GIS Specialist mailing address

601 Bus. Loop 70 West

Parkade Center, Ste 250

Columbia MO 65203 (573) 876-9396 (573) 876-0913 elizabeth.cook@mo.usda.gov Created by Surdex through Contract with USACE St Louis none Unclassified none Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.0.1770 USACE Unknown Unknown raster digital data All files are inspected to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position, all files conform to the project specifications for file standard and content 0 See Surdex LiDAR Accuracy Report This 1-meter Imagine Grid bare-earth DEM data was generated for Stoddard-Mississippi Counties in MO from the classified LAS data. All files are inspected to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position, all files conform to the project specifications for file standard and content 0.40m RMSE Bare-earth Imagine Grid DEM FVA must be <= 0.180m at 95% Confidence Level (0.092m RMSEz) Bare-earth Imagine Grid DEM SVA & CVA must be <= 0.363m at 95th Percentile 0.093m RMSEz (HS) NDEP/ASPRS minimum vertical accuracy requirements for derived DEM, Fundamental Vertical Accuracy (FVA)<= 0.294m at 95% Confidence Level (0.150m RMSEz) 0.185m (hard surfce) 0.266m (grass), 0.266m (trees), 0.177m (urban)95th percentile NDEP/ASPRS minimum vertical accuracy requirements for derived DEM, Supplemental Vertical Accuracy (SVA)<= 0.363m at 95th Percentile 0.245m overall 95th percentileNDEP/ASPRS minimum vertical accuracy requirements for derived DEM, Consolidated Vertical Accuracy (CVA)<= 0.363m at 95th Percentile Acquisition with Optech Orion at ~1900 meters AGL, 32 deg FOV, 200,000 pulse rate, 52.0 Hz, 20% sidelap, 0.7 meter NPS. All flights have calibration lines flown at beginning and end of flight over GPS basestation at local airport. Base stations are run at all times and placed so flight baseline never exceeds 25 miles. The bare-earth Lidar data was processed using USGS (NGP) Base Lidar Specifications V1.0. The resulting digital terrain data will support production of 1' contours. Hydro features were collected on streams and rivers 100~ feet or wider and on lakes 2~ acres or larger. These lines were hydro flattened into the Lidar data and delivered in ESRI SHP file format. Temporal differences in the bare-earth DEM data may be evident between the 2014 and 2015 flight mission boundaries. Please see the LiDAR Acquistition-Processing Summary Stoddard-Mississippi.pdf report for further details and flight grahpics. All deliverables meet or exceed standards for both vertical and horizontal accuracy as stated in NDEP Guidelines for Digital Elevation Data, Version 1.0 for NSSDA of 95% confidence for 1-ft contours and ASPRS Class I Standards. Unknown Surdex Corporation Wade Williams Proejct Manager mailing and physical address

520 Spirit of St. Louis Blvd

Chesterfield Missouri 63005 636-368-4400 (636) 368-4401 wadew@surdex.com LiDAR lines processed to ground and manually cleaned and reviewed in TerraScan; Imagine DEM products produced in TerraScan Unknown Surdex Corporation Wade Williams Project Manager mailing and physical address

520 Spirit of St. Louis Blvd

Chesterfield Missouri 63005 636-368-4400 636-368-4401 Raster Grid Cell Universal Transverse Mercator 16 0.999600 -87.000000 0.000000 500000.000000 0.000000 coordinate pair 1 1 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 Geoid12A 1 meters Explicit elevation coordinate included with horizontal coordinates Missouri NRCS State Office Elizabeth Cook GIS Specialist mailing address

601 Bus. Loop 70 West

Parkade Center, Ste 250

Columbia MO 65203 (573) 876-9396 (573) 876-0913 elizabeth.cook@mo.usda.gov Downloadable Data unknown DEM 1.00 DVD ISO 9660 unknown unknown 20151221 Surdex Corporation Wade Williams Project Manager mailing and physical address

520 Spirit of St. Louis Blvd

Chesterfield MO 63005 636-368-4000 wadew@surdex.com FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile