20070518 07323300 FALSE 20070518 07323300 {8F90BB37-6336-40A9-9ECB-F17BC3520006} 20070518 07323300 mailing and physical address

Bureau of Topographic and Geologic Survey

3240 Schoolhouse Road

Middletown PA 17057 USA PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey Director (717) 702-2017 RA-PAMAP@state.pa.us 0800-1630 PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey 20070615 Middletown, PA PAMAP Program, PA Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey 41001350PAN.tif remote-sensing image PAMAP Program digital orthophoto digital image map aerial photograph rectified photograph rectified image orthophoto DEM None LiDAR None Pennsylvania Venango County An orthoimage is remotely sensed image data that has been positionally corrected for camera lens distortion, vertical displacement and variations in aircraft altitude and orientation. Orthoimagery combines the image characteristics of a photograph with the geometric qualities of a map. The PAMAP 2006 natural color orthoimages were produced at 1-foot pixel resolution. Each orthoimage provides imagery for a 10,000 x 10,000 ft. block on the ground. The projected coordinate system is Pennsylvania State Plane North with a NAD83 datum. There is no image overlap between adjacent files. The orthoimage filenames were derived from the northwest corner of each ortho tile using the first four digits of the northing and easting coordinates referenced to the Pennsylvania State Plane coordinate system, followed by the State designator "PA," and the State Plane zone designator "N." This dataset consists of 10000 x 10000 ft. uncompressed natural color (24-bit) GeoTIFF files at a pixel resolution of 1 foot. The imagery was captured at a negative scale of 1:19200 for the purpose of producing orthophotos. Aerial survey of the Commonwealth of Pennsylvania. Orthophotos serve a variety of purposes, from interim maps to field references for earth science investigations and analysis. The digital orthophoto is useful as a layer of a geographic information system and as a tool for revision of digital line graphs and topographic maps. en 20060327 20060410 ground condition Complete Unknown -80.000216 -79.962921 41.270617 41.242473 1350000.000000 1360000.000000 400000.000000 410000.000000 The Originator, Publisher and Distributor exclude any and all implied warranties and make no warranty or representation with respect to the data files or accompanying documentation, including quality, performance, merchantability or fitness for a particular purpose. These data files and documentation are provided 'as is' and the User assumes the entire risk as to their quality and performance. The Originator and Publisher, as indicated in the metadata, should be clearly cited in any product derived from this data. Any modifications to this data must be described in any digital or hardcopy product derived from this data. GeoTIFF None PAMAP Program, Bureau of Topographic and Geologic Survey, PA Department of Conservation and Natural Resources Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332 Horizontal and Vertical control points were acquired utilizing GPS collection techniques. All control was prepared under the supervision of licensed Professional Land Surveyors. 20060424 GPS Ground Control Aerial photography utilizing airborne GPS techniques was acquired with 60% forward overlap and 30% sidelap at an altitude of 9600' AMT producing a negative scale of 1" = 1600'. Aerial photography was exposed on color negative aerial film. 20060410 Aerial Photography Softcopy aerotriangulation utilizes the GPS ground control, airborne GPS data, and image coordinate measurements which are run through bundle block adjustment software computing the exterior orientation parameters for each image of the photogrammetric project. The original aerial film was scanned utilizing a precision photogrammetric scanner at a resolution of 12.5 microns. Using these scans the aerotriangulation process employs a rigorous mathematical model which detects measurement errors, and corrects for systematic image distorion, film shrikage, atmospheric refraction and camera lens distortions. The final bundle adjustment results are inspected to ensure that the RMSE meets the required 1 part in 10000. GPS Ground Control 20061122 Analytical Aerotriangulation Aerial Photography LiDAR collection and processing generally adhered to FEMA Guidelines and Specifications for Flood Hazard Mapping Partners, Appendix A: Guidance for Aerial Mapping & Surveying, Section A.8: Airborne Light Detection and Ranging (LiDAR) Surveys. Raw LiDAR data was collected using a sensor equipped with an airborne GPS/IMU system. Flight lines with a 30% sidelap were flown with a nominal average LiDAR point spacing of 1.4 meters using a 43 degree field of view (full angle) at a laser pulse rate of 40.6 kHz. The raw LiDAR data is processed and filtered to remove LiDAR points on elevated features such as vegetation, buildings, cars, etc. in order to create a bare earth surface meeting the accuracies required for orthophoto and contour generation. 20070219 Processed LiDAR Raw LiDAR GPS Ground Control To supplement the LiDAR data, photogrammetrically compiled breaklines are collected along various planimetric features and significant breaks in grade. The processed LiDAR data is combined and integrated with these breaklines to generate a final terrain surface of the project area. This surface was then used to support the accurate generation of the orthophotos and 2' contours. Aerial Photography 20070220 DEM Analytical Aerotriangulation Processed LiDAR Digital orthorectification includes a spatial and radiometric transformation of the scanned image from line/sample space into the specified ground coordinate system. The interior and exterior orientation parameters from the aerotriangulation process are used to project each pixel into the ground coordinate system, while the DEM is used to correct for relief displacement. Once the images are ortho-rectified, they are checked for geometric accuracy and image quality, and tone-balanced. The individual overlapping orthophotos are mosaicked together and the final tiles are then extracted from the image set to the project tiling scheme. Aerial Photography 20070614 Color Digital Orthophotography Analytical Aerotriangulation DEM RETTEW Associates, Inc. 20060424 CD-ROM GPS Ground Control GPS control points are used to support the acquisition of the imagery and LiDAR data. Photo identifiable ground control points (panels) based on the control plan are utilized in the analytical aerotriangulation process. A number of "blind-point" panels were established and used during the QA/QC check of the orthophotos, LiDAR data and contour information. All horizontal and vertical control was prepared under the supervision of licensed Professional Land Surveyors. 20060424 ground condition remote-sensing image 20060410 Photo Science, Inc. 19200 filmstrip Aerial Photography Color aerial photography to be used in the creation of digital orthophotos, breaklines, and topographic contours. 20060327 20060410 ground condition Photo Science, Inc. 20060408 disc 20060327 20060408 ground condition Raw LiDAR LiDAR elevation data used in the creation of the terrain surface. Metadata imported. D:\metadata\723_Venango\GeoTIFF_Tile\metadata.xml 20070518 07323300 The accuracy of the ground control is confirmed by the evaluation of the results of the analytical bundle adjustment. The residuals of the final adjustment ensured compliance with NSSDA standards. The Pre Adjustment Gross Error Detection Statistical Test (Data Snooping, with a confidence level of 99.9%) have been applied to all observations included in the aerial triangulations. To detect small gross errors, during Adjustment Robust Estimators were used with the same confidence level and a power of the test of 1-beta=0.2. Systematic errors were eliminated through self calibration and through Additional Parameters. Their numerical stability, statistical significance, internal and external reliability were checked using Student-t test with the same confidence level and Variance/Co-variance analysis. Finally, the arrived variance factor C was submitted to a Chi-square test against the pre-adjustment variance factor using a confidence level 99.9%. During the scanning of the original aerial film, the image histogram for each frame is carefully examined to ensure that the image has been scanned so that the minimum and maximum brightness values are captured to eliminate any loss of detail due to saturation of dark or light areas. The LiDAR flying height, field of view, laser repetition rate, aircraft speed, and the maximum baseline distances from the aerial platform to the ground based GPS stations have been fine tuned to ensure an RMSEz of the processed data at the 18.5 cm level for the base earth surface as required by the FEMA guidelines. See the PAMAP Technical Proposal dated January 11, 2006 for further QA/QC procedures. All files are inspected by the Production Manager to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position when loaded using the ASCII file header, all files conform to the project specifications for pixel resolution, file standard, dimensions, and compression, and all files do not contain blemishes such as visible seam lines, tone differences, data dropout or artifacts; scan swathing, or warped bridges and overpasses. All imagery is visually inspected for completeness to ensure that no gaps or image misplacement exists in the image area. Imagery is mosaicked to ensure complete coverage for map sheets. The imagery has been checked to ensure that the boundary and the content has been covered in its entirety. The horizontal accuracy standard follows the NSSDA-1998 standard. The maximum permissible RMSE for 95% of the horizontal check points for the mapping product is 5 feet or better. The DEM data meets the required vertical accuracy necessary to ensure that the horizontal accuracies of the orthophotos and contours are met. 20070518 mailing and physical address

Penn State Institutes for the Environment

Penn State University

117 Land & Water Research Building

University Park PA 16802 USA 814-863-0104 814-865-3378 pasda@psu.edu Pennsylvania Spatial Data Access (PASDA) FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 en local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile 20070518 mailing and physical address

Penn State Institutes for the Environment

Penn State University

117 Land & Water Research Building

University Park PA 16802 USA Pennsylvania Spatial Data Access (PASDA) 814-863-0104 pasda@psu.edu 814-865-3378 The USER shall indemnify, save harmless, and, if requested, defend those parties involved with the development and distribution of this data, their officers, agents, and employees from and against any suits, claims, or actions for injury, death, or property damage arising out of the use of or any defect in the FILES or any accompanying documentation. Those parties involved with the development and distribution excluded any and all implied warranties, including warranties or merchantability and fitness for a particular purpose and makes no warranty or representation, either express or implied, with respect to the FILES or accompanying documentation, including its quality, performance, merchantability, or fitness for a particular purpose. The FILES and documentation are provided "as is" and the USER assumes the entire risk as to its quality and performance. Those parties involved with the development and distribution of this data will not be liable for any direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the FILES or any accompanying documentation. Downloadable Data 0.000 0.000 Raster Pixel 10000 10000 1.000000 1.000000 8 1 Upper Left FALSE None 3 pixel codes FALSE North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 1.000000 1.000000 coordinate pair survey feet Pennsylvania State Plane North - NAD83 40.883333 41.950000 -77.750000 40.166667 1968500.000000 0.000000 GCS_North_American_1983 NAD_1983_StatePlane_Pennsylvania_North_FIPS_3701_Feet A digital number from 0 to 255 will be assigned to each pixel. For the color imagery this number refers to a color look-up table which will contain the red, green, and blue (RGB) values, each from 0 to 255, for that digital number. Where applicable, all data conforms to the PAMAP Technical Proposal dated January 11, 2006. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.1.1332 41001350PAN.tif 1350000 1360000 410000 400000 1 -80.000216 -79.962921 41.270617 41.242473 1 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset Local Area Network 002 0.000 Raster Dataset NAD_1983_StatePlane_Pennsylvania_North_FIPS_3701_Feet 2 10000 1 Foot_US 1 Foot_US = 0.304801 Meter(s) 10000 1 Foot_US 1 Foot_US = 0.304801 Meter(s) 1