Sanborn Map Company, Inc. 201106 Unknown remote-sensing image tif withheld This metadata record describes the 1-foot pixel resolution digital orthoimagery produced for Clark County Nevada in Fall 2011. The imagery was collected using Microsoft UltraCam D large format digital camera systems in October of 2011. The orthoimagery was produced using Sanborn's proprietary processing system. The orthoimagery is provided 3-band, 8-bits per pixel and delivered in section tiles in uncompressed TIFF format and compressed MrSID format. Digital orthoimagery is provided to Clark County to serve as a basemap for GIS applications. The orthoimagery serves a variety of purposes such as planning, map production, and photo interpretation. The digital orthophoto can be used alone or as a raster basemap for corresponding vector line mapping. en 20111009 20111010 20111011 20111012 20111013 20111014 20111015 20111016 20111022 ground condition Complete As needed -114.891844 -114.873218 36.853410 36.838543 604587.000000 609924.000000 26855355.000000 26860660.000000 Orthoimagery aerial photography orthophotography ortho orthophoto digital orthoimagery Nevada Clark County Las Vegas None None Sharon Rice Clark County IT/GISMO Sr GIS Analyst mailing and physical address

500 S Grand Central Pkwy

Las Vegas Nevada 89155-1761 United States of America 702-455-2412 shr@ClarkCountyNV.gov none Unclassified ESRI ArcCatalog 9.3.1.4000 Raster Dataset N/A Digital orthoimagery does not contain inherent attribution. Compliance with the accuracy standard was ensured by the placement of GPS ground control prior to the acquisition of aerial imagery. The following checks were performed: 1. The ground control and airborne GPS/INS data stream were validated through an aerotriangulation bundle adjustment using Intergraph's ISAT software. 2. Digital orthophotography was validated through a visual inspection of control points, edge matching and general image quality. The following methods were used to ensure image quality: 1. Use of GPS/INS during image acquisition. 3. Checking of client-provided controls against ortho product. 4. Post ortho accuracy approval checks for overall image quality (tone, color balance, etc.). This image complies with National Map Accuracy Standards. 10 Orthos have positional displacement within +/-10 feet of well-defined ground features; accuracy is based on existing ground control and DEM data. Does not apply to vertical surface features, such as structures, appearing in the digital orthophotography due to inherent lean. There is no vertical accuracy for orthoimagery. Sanborn Map Co., Inc. 2011 remote-sensing image 1:1200 disc 20111009 20111010 20111011 20111012 20111013 20111014 20111015 20111016 20111022 ground condition IMG The aerial imagery was captured with an Microsoft UltraCAM D digital camera. The UCD is a full frame digital camera system. The aerial images are used to AT the project and the production of orthophotos. Clark Co. NV 2011 vector digital data unknown CONT Geodetic ground control is used to assure aerial triangulation and orthoimagery is within project specification. The precise coordinates of these locations are used in the AT process and to check the horizontal accuracy of the resulting orthophotos. Existing ground control locations were provided by Clark Co., NV. No ground control was targeted for this project. Clark County Unknown vector digital data unknown DEM The DEM was comprised of existing data provided by Clark Co. NV. Sanborn updated and supplemented the DEM data as needed to support the orthorectifiction process. The LiDAR data was supplied by Clark Co. Sanborn Map Company, Inc. 201106 raster digital data 1:1200 disc 20111009 20111010 20111011 20111012 20111013 20111014 20111015 20111016 20111022 ground condition OIMG Images are rectified using AT solution and DEM data using Sanborn's proprietary software, APS. Images are inserted into a mosaic and seams between images automatically generated. Seams are manual checked for placement and edits performed to correct imagery issues. New digital, color aerial imagery of the site is acquired using Microsoft UltraCAM D aerial camera systems. Airborne GPS/IMU data is recorded along with the imagery. withheld 2011 withheld The Sanborn Map Company, Inc. Raquel Charrois Project Manager mailing and physical address

1935 Jamboree Drive, Suite 100

Colorado Springs CO 80920 United States of America 719-593-0093 719-528-5093 rcharrois@sanborn.com 8:00 AM - 5:00 PM, M-F Imagery and GPS/IMU data is downloaded from disc on the plane to disc on the ground. GPS/IMU mission data is processed together with simultaneously collected ground-based GPS base station data in forward and reverse directions. This precisely determines the aerial camera's position and orientation in the terrain (project) coordinate system and allows for correct orientation of the imagery. withheld 2011 withheld The Sanborn Map Company, Inc. Raquel Charrois Project Manager mailing and physical address

1935 Jamboree Drive, Suite 100

Colorado Springs CO 80920 United States of America 719-593-0093 719-528-5093 rcharrois@sanborn.com 8:00 AM - 5:00 PM, M-F Using the processed GPS/IMU data and correctly oriented imagery, a bundle adjustment is computed (AT). withheld 2011 withheld The Sanborn Map Company, Inc. Raquel Charrois Project Manager mailing and physical address

1935 Jamboree Drive, Suite 100

Colorado Springs CO 80920 United States of America 719-593-0093 719-528-5093 rcharrois@sanborn.com 8:00 AM - 5:00 PM, M-F Orthorectified imagery is produced using Sanborn's proprietary software. Orthoimagery is rectified using the AT solution and DEM data. Once rectified, the orthoimagery is colorbalanced to the acceptable parameters established by Clark Co. Orthoimagery is undergoes manual quality control to check for issues as outlined in the Digital Orthoimagery Acceptance Criteria document. Issues such as warps, smears, misalignments, etc. are corrected using proprietary and non-proprietary photo editing tools and software. Upon completion of the QC process, the orthos are provided to Clark Co. for review. Any unacceptable orthoimagery is corrected and the final orthoimagery is then delivered to Clark Co. on hard drives in TIFF/TFW and SID/SDW formats. withheld 2011 withheld The Sanborn Map Company, Inc. Raquel Charrois Project Manager mailing and physical address

1935 Jamboree Drive, Suite 100

Colorado Springs CO 80920 United States of America 719-593-0093 719-528-5093 rcharrois@sanborn.com 8:00 AM - 5:00 PM, M-F Metadata imported. withheld 20111224 17075300 5 Raster Pixel 5373 5411 1 2.000000 2.000000 8 Upper Left FALSE LZ77 3 pixel codes FALSE SDR Lambert Conformal Conic 32.133333 33.966667 -98.500000 31.666667 1968500.000000 6561666.666667 row and column 1.000000 1.000000 survey feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Nevada_East_FIPS_2701_Feet North American Vertical Datum of 1988 0 US Feet Implicit coordinate Color orthophotos are comprised of pixels. Each pixel is assigned a value of 0 to 255. That number will refer to a color look-up table which contains red, green and blue (RGB) values, each from 0 to 255, for that pixel within the image. None Downloadable Data 0.000 0.000 20111130 Clark County IT/GISMO Sharon Rice Sr GIS Analyst mailing and physical address

500 S Grand Central Pkwy

Las Vegas Nevada 89155-1761 United States of America 702-455-2412 shr@ClarkCountyNV.gov 0800-1700 PST, M-F Sharon Rice FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time none none Unclassified en 20111224 17075300 FALSE 20120308 13181300 20120308 13181300 {A5E0204D-404C-4F19-ACAB-442561A7D743} F2011 002 604587.000000 609925.000000 26855354.000000 26860660.000000 1 8 FALSE LZW 3 TIFF TRUE continuous unsigned integer 256 ESRI ArcGIS 10.0.2.3200 F2011 604587 609924 26860660 26855355 1 002 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset withheld Local Area Network 002 0.000 Raster Dataset Raster Dataset 2 1 5337 1 unknown 5305 1 unknown 2 1 0 604587.000000 26855354.000000 604587.000000 26860660.000000 609925.000000 26860660.000000 609925.000000 26855354.000000 607256.000000 26858007.000000 2669 2.000000 2653 2.000000 20120308 Band_1 8 Band_2 8 Band_3 8