Woolpert 20181213 Lidar point cloud Product: These lidar data are processed Classified LAS 1.2 files, formatted to 4,872 individual 3,000ft x 2,000ft tiles in NAD 1983 State Plane Texas North Central FIPS 4202, US Foot; used to create intensity images, 3D breaklines and hydro-flattened DEMs as necessary. Geographic Extent: The North Central Texas Council of Government (NCTCOG) program is a five-year contract to perform Photogrammetric, Surveying, and GIS services. On a yearly basis, NCTCOG coordinates with local public agencies to determine the need for geospatial services. Based on participant interest the project area and project deliverables will be defined each year by NCTCOG and its participants. Dataset Description 2018 NCTCOG Program Lidar project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.50 meter. The data was developed based on a horizontal projection/datum of NAD 1983 State Plane Texas North Central FIPS 4202, US Foot and vertical datum of NAVD88 (GEOID12B), US Foot. Lidar data was delivered as flight line-extent unclassified LAS swaths, as processed Classified LAS 1.2 files, formatted to 4,872 individual 3,000ft x 2,000ft tiles in NAD 1983 State Plane Texas North Central FIPS 4202, US Foot as tiled Intensity Imagery, and as tiled bare earth DEMs; all tiled to the same 3,000ft x 2,000ft schema. Ground Conditions: Lidar was collected in spring of 2018, while no snow was on the ground and rivers were at or below normal levels. The purpose of this project is to provide orthoimagery and LiDAR services for the 2018 project. TASK NAME: 2018 NCTCOG Program, Woolpert Order No. 78208, CONTRACTOR: Woolpert NCTCOG 2018 Program Specifications Leica ALS70 4 0.5 4 0.5 4 Varies 150 40 47 242; 461 5 5 1064 1 0.22 1442 30 StatePlane Texas North Central FIPS 4202 GEOID12B 0 N/A N/A 0.145 25 1.2 1 Geometrically unreliable points were identified using a combination of automated and manual techniques and subsequently classified as swath overlap and or noise. swath overlap points were identified in these files by adding 16 to the standard classification values 8 1 default/unclassified 2 Bare-earth 3 Low vegetation 4 Medium vegetation 5 High vegetation 6 Building 7 All noise 9 Water 17 Overlap default/unclassified 18 Overlap ground 20180311 20180315 ground condition Complete As needed -97.571371 -96.012510 33.412174 31.980700 None Lidar Classified Point Cloud None United States Texas Some restrictions apply. Ownership of the data products resides with NCTCOG. Use of NCTCOG Products. The Entity’s Authorized Users may Use the NCTCOG data product in the Licensed Operating Environment for any use that furthers the Entity’s internal operations or in furtherance of the Entity’s mission. Use of Generated Output or Other Data. Except as stated, the Entity will own all original works of authorship it may independently create. Digital output from the Entity’s Use of the NCTCOG Data Product may be resized as desired and printed on black and white, color printers, or map plotters. Such printed hardcopies may be distributed to the Entity’s officers, employees, citizens, contractors, or other persons in the regular course of business for their internal use or in connection with an actual transaction. Such printed output may be further copied, photographed, or reproduced digitally on the Internet. The Entity may charge a fee for such hardcopy printouts that exceed the actual direct cost of production. Without the prior written consent of NCTCOG, the Entity may not otherwise provide copied, digitized, reproduced, transmitted or disseminated, in whole or in part, any of the original digital data product in any form. 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. These 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 Vertical Accuracy specifications. LAS Swath Vertical Accuracy tested 0.145 Survey Feet vertical accuracy at 95 percent confidence level, derived according to NSSDA, in open terrain using 0.074 Survey Feet (RMSEz) x 1.9600, tested against the TIN using independent checkpoints against ground points. LAS Point Classification: The point classification is performed as described below. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" lidar returns. This process determined Default (Class 1), Ground (Class 2), Low Vegetation (Class 3), Medium Vegetation (Class 4), High Vegetation (Class 5), Building (Class 6), Noise (Class 7), Water (Class 9), Overlap Default (Class 17) and Overlap Ground (Class 18). The bare-earth (Class 2 - Ground) lidar points underwent a manual QA/QC step to verify the quality of the DEM as well as a peer-based QC review. This included a review of the DEM surface to remove artifacts and ensure topographic quality. Classification of water (class 9) was completed via the use of the hydrologic breaklines collected for the hydro-flattening phase. The overlap classes were determined by first identifying the overlapping areas and reclassifying the LAS data by offset from a corridor. This allows the returns located on the edge of the swath to be removed from the bare earth coverage in an effort to produce a more uniform data density. The returns determined to be overlap are then further classified to produce overlap default (class 17) and overlap ground (class 18). The surveyed ground control points are used to make vertical adjustments to the data set and to perform the accuracy checks and statistical analysis of the lidar dataset. 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. The resulting deliverables for this task order consist of classified LAS file in LAS 1.2 format, two (2) feet pixel size DEM files in ERDAS IMG format, two (2) feet pixel raster DSMs in ERDAS IMG Format, two (2) feet pixel size 8-bit Intensity files in GeoTIFF format, classified XYZ and Hydrologic Breakline data in ESRI GDB file format. 20180311 Point StatePlane Texas North Central FIPS 4202 32.13333333333333 33.96666666666667 -98.5 31.66666666666667 1968500.0 6561666.666666666 coordinate pair 0.01 0.01 foot_us D North American 1983_2011 GRS 1980 6378137.0 298.257222101 North American Vertical Datum of 1988(GEOID12B) 0.01 foot_us Explicit elevation coordinate included with horizontal coordinates North Central Texas Council of Governments mailing and physical address

616 Six Flags Dr.

Arlington TX 76011 USA (817) 695-9156 Unknown 8:00 a.m. to 5:00 p.m. Central Time The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and within the limitations of the data for which it was requested and prepared, in general, and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data. It is not appropriate to use the related graphics as data. Woolpert gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from a Woolpert server, and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully upon Woolpert’s computer system, no warranty, expressed or implied, is made regarding the utility of the data on another system, or for general or scientific purposes; nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. 20181213 Woolpert mailing and physical address

4454 Idea Center Blvd

Dayton OH 45430 USA (937) 461-5660 FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998