Spicer Group Inc.2018point dataGeographic Extent: Saginaw County, MI, covering approximately 815 square miles. Dataset Description: Saginaw County, MI 2016 LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1.0. The data was developed based on a horizontal projection/datum of Michigan State Plane South, NAD83, international feet and vertical datum of NAVD1988 (GEOID12A), international feet. LiDAR data was delivered in RAW flight line swath format, then processed to create Classified LAS 1.2 Files formatted to 991 individual 5000 foot X 5000 foot tiles. Corresponding Intensity Images and Bare Earth DEMs tiles were created with the same 5000 foot X 5000 foot tile schema. Breaklines were produced in Esri geodatabase format. Ground Conditions: LiDAR was collected in spring of 2015, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Spicer Group Inc established a total of 120 Land Cover control points (52 QC checkpoints, 68 calibration control points) which were used to calibrate the LIDAR to known ground locations established throughout the Saginaw County, MI project area. 28 additional check points were surveyed by Kucera for the accuracy check of the initial acquisition. these 28 points have been added to the NVA LiDAR and DEM accuracy reports.Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create Intensity Images, Breaklines and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 1 foot cell size. These raw lidar point cloud data were used to create classified lidar LAS files, intensity images, 3D breaklines and hydro-flattened DEMs as necessary.CONTRACTOR: Spicer Group Inc Lidar data were acquired by Kucera International Inc. All follow-on processing was completed by the prime contractor.2015032420150417ground conditionCompleteNone planned-84.3995620600000-83.667611750000043.571665060000043.116841880000013114641.52113310000.000755000.000590000.000NoneElevation dataLidarCheck PointsSurveyNoneMichiganMISaginaw CountyNo 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.Spicer Group ImcNathan Shepherdmailing and physical

6600 Peachtree Dunwoody Road, Building 400, Suite 108

AtlantaGA30328USA678-585-6501 ex304678-585-6501nathans@spicergroup.comMonday through Friday 8:00 AM to 5:00 PM (Eastern Time)If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.MicroStation Version 8; TerraScan Version 16; TerraModeler Version 16; GeoCue Version 2014.1.21.1; ESRI ArcGIS 10.3; Windows 7 Operating System;Global Mapper V.17.1 \\Proj2015\122278SG2015 - Saginaw County LiDAR 1.66 TBCheck Points were surveyed using GPS and conventenial methods. Survey data was then processed and checked before being used.Check points were used to generate NVA and VVA accuracy reports for the LiDAR data set and DEM's.Spicer Group Inc.2018vector digital data and tabular dataSaginaw, MISpicer Group Inc.External Hard Drive20160430ground conditionMI_SaginawCo_2015_LiDAR_ctrlThis data source was used (along with the airborne GPS/IMU Data) to aid in the georeferencing of the lidar point cloud data.QC Checkpoint Creation: Please see the survey report for more information on Control Point location methodologies. The calibration control point shape files were generated from XYZ text files using a combination of Global Mapper and ArcMap software.MI_SaginawCo_2015_LiDAR_ctrl2018QC CheckpointsSpicer Group Inc.Nathan Shepherdmailing and physical

6600 Peachtree Dunwoody Road, Building 400, Suite 108

AtlantaGA30328USA678-585-6501 ex304678-585-6501nathans@spicergroup.comMonday through Friday 8:00 AM to 5:00 PM (Eastern Time)If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.PointPointState Plane Coordinate System 1983211342.143.66666666666666-84.3666666666666641.513123359.580052490.0coordinate pair0.010.01international feetNorth American Datum of 1983Geodetic Reference System 806378137298.257222101North American Vertical Datum of 19880.01international feetExplicit elevation coordinate included with horizontal coordinatesQC Check PointsAn accurately surveyed coordinate location for a physical feature that can be identified on the ground. Control points are used in least-squares adjustments as the basis for improving the spatial accuracy of all other points to which they are connected.Esri GIS Dictionary http://support.esri.com/en/knowledgebase/GISDictionary/term/control%20pointFIDInternal feature number.EsriSequential unique whole numbers that are automatically generated.ShapeFeature geometry.EsriFeature geometry - Point ZMIDName assigned to each QC check pointLiDAR DataUnique identifier assigned to each QC check point. Point numbers assigned by surveyorNorthingNorthing coordinate in project coordinate system for each QC check pointLiDAR DataQC Check Point EastingNorthing coordinate in project coordinate USGS Metadata Guide 1.2 Page 18 of 21 October 28, 2015 USGS Metadata Guide 1.2 system for each QC check pointValues are calculated by survey managerEastingEasting coordinate in project coordinate system for each QC check pointLiDAR DataQC Check Point NorthingEasting coordinate in project coordinate system for each QC check pointValues are calculated by survey managerElevationElevation in project coordinate system for each QC check pointLiDAR DataQC Check Point ElevationElevation in project coordinate system for each QC check pointValues are calculated by survey managerN_RMSE_95_Root Mean Square Error of the Northing CoordinateLiDAR DataRMSE NorthingRoot Mean Square Error of the Northing CoordinateValues are calculated by survey managerE_RMSE_95_Root Mean Square Error of the Easting CoordinateLiDAR DataRMSE EastingRoot Mean Square Error of the Easting CoordinateValues are calculated by survey managerZ_RMSE_95_Root Mean Square Error of the Elevation CoordinateLiDAR DataRMSE ElevationRoot Mean Square Error of the Elevation CoordinateValues are calculated by survey managerQC check points are used to finalize the calibration of the LiDAR data. Points are used to eliminate any vertical bias between the LiDAR dataset and the surveyed ground elevations.More detail about the attributes of this data set can be found in LAS 1.4 specifications and USGS LiDAR Base Specification Version 1.2.20181223Spicer Group IncNathan Shepherdmailing and physical

6600 Peachtree Dunwoody Road, building 400, Suite 108

AtlantaGA30328USA678-585-6501 ex304678-585-6501nathans@spicergroup.comMonday through Friday 8:00 AM to 5:00 PM (Eastern Time)If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.FGDC Content Standard for Digital Geospatial MetadataFGDC-STD-001-1998None.None.None.UnclassifiedNONE