Aerometric 20120313 1.0 digital point data This delivery contains point cloud data in LAS 1.2 format, classified in the following manner. Class 1: Unclassified Class 2: Ground, Class 3: Low Vegetation (less than 6 feet above ground surface), Class 4: Medium Vegetation (between 6 and 15 feet above ground surface), Class 5: High Vegetation (greater than 15 feet above ground surface), Class 6: Buildings, Class 7: Error Points, Class 8: Contour Keypoints, Class 9: Water, Class 10: Breakline proximity ground points, Class 11: Powerlines, Class 13: Noise (unclassifed data 1 foot or less above ground), Class 14: Bridge Deck. The following are the collection parameters and equipment used to create these data sets. Aircraft: Cessna 310(N7516Q), Piper Navajos (N6GR and T73TM), Beechcraft KingAir (N898WW) Lidar Systems: Optech ALTM Gemini (03SEN145 and 07SEN201) Approximate Collection Altitude (Above Mean Terrain): 1400 meters Ground Speed: 150 kts Pulse Rate Frequency: 70 kHz Mirror Scan Frequency: 40 Hz Scan Angle (+/-): 17 degrees Beam Divergence: Narrow (0.3 mrad) Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. Classified data sets such as this one may have varying posting due to some pulses not reaching the ground. The purpose of this data set is to provide lidar-derived topographic data for the Matanuska-Susitna Borough. 20110510 20110511 20110512 20110513 20110517 20110518 20110520 20110521 20110524 20110526 20110527 20110530 20110531 20110601 20110607 20110617 20111004 ground condition Complete None Planned -150.857123111 61.544358278 -149.822846139 61.1827225 None Elevation Topography Remote Sensing Lidar Laser Terrain Bare-Earth None USA Alaska Point MacKenzie None Class 1: Unclassified Class 2: Ground Class 3: Low Vegetation (Less than 6 feet above ground surface) Class 4: Medium Vegetation (Between 6 and 15 feet above ground surface) Class 5: High Vegetation (More than 15 feet above ground surface) Class 6: Buildings Class 8: Contour Keypoints Class 7: Error Points (Noise) Class 9: Water Class 10: Breakline proximity ground points Class 11: Powerlines Class 13: Noise (unclassifed data 1 foot or less above ground) Class 14: Bridge Deck None May June October 2011 Public None Aerometric, Inc. Lidar Manager Lidar Manager mailing and physical address

2014 Merrill Field Drive

Anchorage Alaska 99501-4116 USA (907) 272-4495 (907) 274-3265 aerometric@aerometric-ak.com 8:00 am to 5:00 pm Alaska Standard Time Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; lidarTools 1.0.9 Data has not been verified using ground survey points. Not Complete No horizontal accuracy verifications have been completed No vertical accuracy verifications have been completed Aerometric 20120313 1.0 digital point data MSPML Aerometric lidar 20110510 20110511 20110512 20110513 20110517 20110518 20110520 20110521 20110524 20110526 20110527 20110530 20110531 20110601 20110607 20110617 20111004 ground condition Create a smoothed-best estimated trajectory (SBET) of the sensor at a rate of 200 Hz, by integrating the airborne GPS and IMU data The basis of the GPS coordinates were provided to Aero-Metric by Lounsbury, Inc., and were referenced to NAD83 (CORS96) with GEOID09 derived orthometric heights. The maximum baseline distance for this area was 15 km, the average base line length was 5 km. The mean GPS positional accuracy for this area was +/- 0.06 meters. 20110511-20111005 Integrate SBET and raw laser data to produce point cloud data in LAS 1.2 format for each flight line. 20110511-20111005 Data Calibration: An in-situ calibration was performed using the data collect for this project. The data was classified in each line separately for ground and other common features between lines, such as building roofs. This data was processed in TerraMatch 11.001 (TerraSolid, Ltd.), to compute corrections for roll, pitch, heading, and mirror scale. These corrections are applied in order to minimize discrepancies between flight lines. 20110611-20111005 Automated classification of the bare-earth data from the lidar point cloud using a series of algorithms customized for the types of terrain encountered in the project. 20110611-20111010 Manual classification of any data which appears to be properly classified using the automated methods. 20110711-20111010 Create point cloud data, by tile in LAS 1.2 format with absolute GPS timestamps 20120304 0 State Plane Coordinate System 1983 5004 0.999900 -150.0 54.0 1640416.7 0.0 coordinate pair 0.01 0.01 U.S. Survey Feet North American Datum of 1983(CORS96) EPOCH 2003.0000 Geodetic Reference System 80 6378137.000000 298.257222 NAVD88, derived using GEOID09 (Alaska) 0.01 feet Explicit elevation coordinate included with horizontal coordinates LAS 'LAS 1.2' ASPRS binary data American Society for Photogrammetry and Remote Sensing Aerometric, Inc. Lidar Manager Lidar Manager mailing and physical address

2014 Merrill Field Drive

Anchorage Alaska 99501-4116 USA (907) 272-4495 (907) 274-3265 aerometric@aerometric-ak.com 8:00 am to 5:00 pm Alaska Standard Time Aerometric, Inc. assumes no liability for the data being used for purposes other than stated in this document. 20120313 Aerometric, Inc. Lidar Manager Lidar Manager mailing and physical address

2014 Merrill Field Drive

Anchorage Alaska 99501-4116 USA (907) 272-4495 (907) 274-3265 aerometric@aerometric-ak.com 8:00 am to 5:00 pm Alaska Standard Time FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time