<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>NV5 Geospatial, powered by Quantum Spatial</origin>
        <pubdate>20210818</pubdate>
	      <title>PA_WesternPA_2019_D20 Lidar QL2; Contours</title>
	      <geoform>Vector digital data</geoform>
      </citeinfo>
    </citation>
    <descript>
      <abstract>
       Product: Contours with a 1 foot interval in Esri file geodatabase format.
       Geographic Extent: 31 counties in Pennsylvania, covering approximately 9299 total square miles.
       Dataset Description: The PA_WesternPA_2019_D20 Lidar QL2 project called for the planning, acquisition, processing, and derivative products of lidar data to be collected at a nominal pulse spacing (NPS) of 0.71 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 2.1. The data were developed based on a horizontal projection/datum of NAD 1983 2011 StatePlane Pennsylvania South FIPS 3702 Ft US, Foot US and vertical datum of NAVD88 Geoid 12b, Foot US. LiDAR data were delivered as processed Classified LAS 1.4 files formatted to 2684 individual 10,000 ft x 10,000 ft tiles, as tiled intensity imagery, and as tiled bare earth DEMs; all tiled to the same 10,000 ft x 10,000 ft schema. Continuous breaklines were produced in Esri file geodatabase format.
       Ground Conditions: LiDAR was collected in fall 2019 and spring 2020, 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 and meet ASPRS vertical accuracy guidelines, NV5 Geospatial, powered by Quantum Spatial utilized a total of 274 ground control points that were used to calibrate the LiDAR to known ground locations established throughout the project area. An additional 485 independent accuracy checkpoints, 291 in Bare Earth and Urban landcovers (291 NVA points), 194 in Tall Weeds categories (194 VVA points), were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data.</abstract>
      <purpose>To acquire detailed surface elevation data for use in conservation planning, design, research, floodplain mapping, dam safety assessments and elevation modeling, etc. Classified LAS files are used to show the manually reviewed bare earth surface. This allows the user to create intensity images, breaklines and raster DEMs. The purpose of these LiDAR data was to produce high accuracy 3D hydro-flattened digital elevation models (DEMs) with a 2.5 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.</purpose>
      <supplinf>Contract No. G16PC00016, Task Order No. 140G0220F0030; CONTRACTOR: NV5 Geospatial, powered by Quantum Spatial</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>20191118</begdate>
          <enddate>20200322</enddate>
        </rngdates>
      </timeinfo>
      <current>Ground condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>None planned</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-80.5948752182</westbc>
        <eastbc>-78.3530752762</eastbc>
        <northbc>41.2257134282</northbc>
        <southbc>39.6837903412</southbc>
      </bounding>
      <lboundng>
        <leftbc>1185612.45253</leftbc>
        <rightbc>1798837.21414</rightbc>
        <topbc>689999.999986</topbc>
        <bottombc>139999.999983</bottombc>
      </lboundng>
    </spdom>
    <keywords>
      <theme>
        <themekt>None</themekt>
        <themekey>Model</themekey>
	<themekey>Contours</themekey>
      </theme>
      <place>
        <placekt>None</placekt>
        <placekey>Pennsylvania</placekey>
        <placekey>Allegany County</placekey>
        <placekey>Allegheny County</placekey>
        <placekey>Armstrong County</placekey>
        <placekey>Beaver County</placekey>
        <placekey>Bedford County</placekey>
        <placekey>Blair County</placekey>
        <placekey>Brooke County</placekey>
        <placekey>Butler County</placekey>
        <placekey>Cambria County</placekey>
        <placekey>Clarion County</placekey>
        <placekey>Clearfield County</placekey>
        <placekey>Columbiana County</placekey>
        <placekey>Fayette County</placekey>
        <placekey>Garrett County</placekey>
        <placekey>Greene County</placekey>
        <placekey>Hancock County</placekey>
        <placekey>Indiana County</placekey>
        <placekey>Jefferson County</placekey>
        <placekey>Lawrence County</placekey>
        <placekey>Mahoning County</placekey>
        <placekey>Marshall County</placekey>
        <placekey>Mercer County</placekey>
        <placekey>Monongalia County</placekey>
        <placekey>Ohio County</placekey>
        <placekey>Preston County</placekey>
        <placekey>Somerset County</placekey>
        <placekey>Trumbull County</placekey>
        <placekey>Venango County</placekey>
        <placekey>Washington County</placekey>
        <placekey>Westmoreland County</placekey>
        <placekey>Wetzel County</placekey>
      </place>
    </keywords>
    <accconst>No restrictions apply to these data.</accconst>
    <useconst>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 their limitations. Acknowledgement of the organization providing these data to the public would be appreciated for products derived from these data.</useconst>
  </idinfo>
  <dataqual>
    <logic>Data cover the entire area specified for this project.</logic>
    <complete>All files are inspected to ensure that they conform to the specified file naming conventions, all files load in their correct geographic position, all files conform to the project specifications for file standard and content.</complete>
    <lineage>
      <procstep>
        <procdesc>Contour Processing: Using automated scripting routines within ArcMap, a terrain surface was created using the ground (ASPRS Class 2) LiDAR data as well as the hydro-flattened breaklines. This surface was then used to generate the final 1 foot contour dataset in Esri File Geodatabase format.</procdesc>
        <procdate>2021</procdate>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Vector</direct>
  </spdoinfo>
  <spref>
    <horizsys>
      <planar>
        <gridsys>
          <gridsysn>State Plane Coordinate System 1983</gridsysn>
          <spcs>
            <spcszone>3702</spcszone>
            <lambertc>
              <stdparll>39.9333333333</stdparll>
              <stdparll>40.9666666667</stdparll>
              <longcm>-77</longcm>
              <latprjo>39.3333333333</latprjo>
              <feast>1968500</feast>
              <fnorth>0.0</fnorth>
            </lambertc>
            </spcs>
        </gridsys>
        <planci>
          <plance>coordinate pair</plance>
          <coordrep>
            <absres>0.001</absres>
            <ordres>0.001</ordres>
          </coordrep>
          <plandu>Foot US</plandu>
        </planci>
      </planar>
      <geodetic>
        <horizdn>D NAD 1983 2011</horizdn>
        <ellips>Geodetic Reference System 80</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257222101</denflat>
      </geodetic>
    </horizsys>
    <vertdef>
      <altsys>
        <altdatum>NAVD88 Geoid 12b</altdatum>
	      <altres>1.0</altres>
        <altunits>Foot US</altunits>
        <altenc>Explicit elevation coordinate included with horizontal coordinates</altenc>
      </altsys>
    </vertdef>
  </spref>
  <metainfo>
    <metd>20210818</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>NV5 Geospatial, powered by Quantum Spatial</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>523 Wellington Way</address>
          <city>Lexington</city>
          <state>KY</state>
          <postal>40503</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>859-277-8700</cntvoice>
        <cntfax>859-277-8901</cntfax>
        <hours>Monday through Friday 8:00 AM to 5:00 PM (Eastern Time)</hours>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <metac>None.</metac>
    <metuc>None.</metuc>
    <metsi>
      <metscs>None.</metscs>
      <metsc>Unclassified</metsc>
      <metshd>NONE</metshd>
    </metsi>
    <metextns>
      <onlink>None.</onlink>
      <metprof>None.</metprof>
    </metextns>
  </metainfo>
</metadata>
