Axis GeoSpatial, LLC Unpublished Material Digital Image File .IMG None Available None Available This data set is consisting of LiDAR Point Cloud, Classified LiDAR, Digital Elevation Model and all pieces encompasses the entire 1003 Square miles of the provided New York AOI. This data set consists of LiDAR point cloud LAS swath files and tiled Las files. Each LAS file contains LiDAR point information, which has been calibrated, controlled, and classified. Each file represents a separate swath of LiDAR. Ground Conditions: water in some areas between different flight dates expierenced tidal changes; no unusual inundation; no snow; leaf off The State of New York has contracted Axis GeoSpatial, LLC to obtain professional services related to the collection of Light Detection and Ranging (LiDAR) data between December 2015 and March 2015. The purpose of these lidar data was to produce high accuracy 3D Digital Elevation Model (DEM) with a 1.0 foot cell size. These raw lidar point cloud data were used to create classified lidar LAS files, and Bare Earth DEMs as necessary. All Lidar data was acquired, calibrated, and used in the creation of Lidar derived products by Axis GeoSpatial, LLC. 20161220 0800 20160321 0800 ground condition Complete As needed -73.936986 -73.342452 42.735292 41.965762 None Elevation Data LiDAR DEM None New York Columbia County Rensselaer County No restrictions apply to this data the data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of the data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose. 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be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions.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 the limitations of the data. Acknowledgement of New York Office of Information Technology Services would be appreciated for products derived from these data. The data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of the data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose. New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov None Available Contact New York Office of Information Technology Services None Available Contact New York Office of Information Technology Services None Available Contact New York Office of Information Technology Services ArcGIS Desktop Version 10.3; LasTools 150925; Global Mapper Version 16.2; Windows 7 Operating System Required Non-Vegetated Vertical Accuracy (NVA) for the Point Cloud:0.10m Required Vegetated Vertical Accuracy (VVA) for the Point Cloud:.10m Number of Check Points used to calculate the Reported (NVA) for the RAW Point Cloud:107 Calculated (NVA) of the Classified Point Cloud:.059m Number of Check Points used to calculate the Reported (NVA) for the Classified Point Cloud:107 Calculated (VVA) of the Classified Point Cloud:.081m Digital Elevation Model (DEM) data covers the entire 1003 Square mile Area of Interest intended for this project task. All DEM tiles show no edge artifacts or mismatches from tile to tile. Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. Data cover the entire area specified for this project. The raw LAS data files included 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 Fundamental Vertical Accuracy specifications.Void areas (i.e., areas outside the project boundary but within the tiling scheme) are coded using a unique NODATA value. This value is identified in the appropriate location within the file header. Horizontal error in lidar derived elevation data is largely a function of positional error as derived from the Global Navigation Satellite System (GNSS), attitude (angular orientation) error (as derived from the INS) and flying altitude; and can be estimated based on these parameters. .3273m As described in Section 7.5 of the ASPRS Positional Accuracy Standards for Digital GeoSpatial Data the horizontal errors in lidar data are largely a function of GNSS positional error, INS angular error, and flying altitude. Therefore lidar data collected with GNSS error of 0.05m and the IMU error of 0.005 degrees at an altitude of 2072 m; the expected radial horizontal positional error will be RMSEr = .3273m Vertical Accuracy of the point cloud and bare-earth lidar data was assessed and reported in accordance with the ASPRS Positional Accuracy Standards for Digital Geospatial Data.(214) surveyed points were measured for the purpose of assessing the accuracy of the New York AOI data. (107 NVA + 107 VVA) .06 m This data set was tested to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 10.0 (cm) RMSEz Vertical Accuracy Class. Actual NVA accuracy of the bare-earth was found to be RMSEz = .06 m, equating to +/- .078 m at 95% confidence level. .085 m This data set was tested to meet ASPRS Positional Accuracy Standards for Digital Geospatial Data (2014) for a 10.0 (cm) RMSEz Vertical Accuracy Class. Actual VVA accuracy was found to be RMSEz = .085 m, equating to +/- .145 m at 95% confidence level. New York Office of Information Technology Services Unpublished Material 0800 Digital Image File .IMG None Available None Available None Available 1200 Portable Hard Drive 20161220 0800 20160321 0800 ground condition New York LiDAR Derived DEMs This data source was used (along with the airborne GPS/IMU Data) to georeference the lidar point cloud data which was used to create Digital Elevation Models (DEM) Aerial LiDAR Acquisition: Aerial data collection was acquired in eleven (9) missions. Missions were flown using the Riegl Q1560 LiDAR system at a max flying height of 1830 m AGL. This was to support a 2.6 ppm^2 LiDAR point cloud. Airborne GPS and IMU data was collected during the acquisition and supported by POS/AV 510 for both sensors. Data acquisition was completed on March 21 2016 .Ground Control Survey: A survey was performed by Axis GeoSpatial, LLC to support the acquisition of Light Detection and Ranging (LiDAR). The control network involved a total of (214) check points (107 NVA + 107 VVA). The points were a combination of the following ground cover classification: Open Terrain, Urban Terrain, Bare Earth, and High Grass. 20160321 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 (518)322-4976 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM 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 process was repeated interactively until residual errors between overlapping swaths, across all project lifts, was reduced to 2 cm or less. Data was then block adjusted to match surveyed calibration control. Raw data NVA was checked using independently surveyed check points. Swath overage points were identified and tagged within each swath file. 20160322 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov 8:00 am - 5:00 pm Initial processing of the GPS data was processed using POSPAC MMS 7.2. The solution file was generated and RiProcess software was used to generate georeferenced laser returns which were then processed in strip form allowing for the QC of the overlap between strips (lines). The data from each line were combined and automated classification routines run to determine the initial surface model. This initial surface model was then verified to the surveyed test points. 20160322 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov 8:00 am - 5:00 pm LiDAR Post-Processing: The calibrated and controlled LiDAR swaths were processed using automatic point classification routines in TerraSolid 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. 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 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. 20160430 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov 8:00 am - 5:00 pm LiDAR Classification: The calibrated LiDAR data was run through automated classification routines and then manually checked and edited. The data was classified into the following classes: 1-unclassified*, 2-ground, 7-low noise, 9-water, 10-ignored ground, 17-bridges, and 18-high noise. 20160730 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Bare-Earth DEM Creation: Bare-Earth Digital Elevation Models (DEMs) were derived using the hydro break line and bare-earth (ground) LiDAR points, all DEMs were created with a grid spacing of 1 meter. The DEMs were cut to tiles of 1500 meters X 1500 meters index, provided by New York Office of Information Technology Services. 20161030 0800 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. Raster Pixel 1500 1500 Universal Transverse Mercator 18 0.99960000 -75.00000000 0.00000000 500000.00000000 0.00000000 coordinate pair 1.0 1.0 meters North American Datum of 1983 (2011) Geodetic Reference System 80 6378137.0 298.257222101 North American Vertical Datum of 1988 (Geoid12A) 1200 meters Explicit elevation coordinate included with horizontal coordinates Digital Elevation Model Tiles for New York Office of Information Technology Services Digital Elevation Model Tiles for New York Office of Information Technology Services New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov The data represented is the result of data collection and processing per contract specifications and indicates the general existing conditions at the time of data collection. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose. No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov Contact New York Office of Information Technology Services No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov Contact New York Office of Information Technology Services No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov 20161128 0800 20161128 20161128 20161128 New York Office of Information Technology Services Tim Ruhren Program Manager mailing and physical address

10B Airline Drive

Albany NY 12235 United States (518)242-5061 tim.ruhren@its.ny.gov Monday through Friday 8:00 AM to 5:00 PM If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov None Available Unclassified No formal constraints although the present data set does belong to New York Office of Information Technology Services and more information can be obtained by contacting New York Office of Information Technology Services at: Tim Ruhren New York Office of Information Technology Services Program Manager (518)242-5061 tim.ruhren@its.ny.gov