<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Quantum Spatial, Inc.</origin>
        <pubdate>20210209</pubdate>
	      <title>Pennsylvania North Central 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: 34 counties in Pennsylvania, covering approximately 5621 total square miles.
       Dataset Description: The Pennsylvania North Central 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 1.3. The data were developed based on a horizontal projection/datum of NAD 1983 StatePlane Pennsylvania South FIPS 3702 Feet, Foot US and vertical datum of NAVD88 GEOID12B, Foot US. LiDAR data were delivered as processed Classified LAS 1.4 files formatted to 1651 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 spring and fall 2019, 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, Quantum Spatial, Inc. utilized a total of 326 ground control points that were used to calibrate the LiDAR to known ground locations established throughout the project area. An additional 546 independent accuracy checkpoints, 322 in Bare Earth and Urban landcovers (322 NVA points), 224 in Tall Weeds categories (224 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. 140G0219F0103; CONTRACTOR: Quantum Spatial, Inc.</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>20190323</begdate>
          <enddate>20191123</enddate>
        </rngdates>
      </timeinfo>
      <current>Ground condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>None planned</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-78.8500205092</westbc>
        <eastbc>-75.0269484431</eastbc>
        <northbc>41.0352262157</northbc>
        <southbc>39.6727305013</southbc>
      </bounding>
      <lboundng>
        <leftbc>1665000.0</leftbc>
        <rightbc>2720000.0</rightbc>
        <topbc>620000.0</topbc>
        <bottombc>135000.0</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>Bedford County</placekey>
        <placekey>Berks County</placekey>
        <placekey>Blair County</placekey>
        <placekey>Bucks County</placekey>
        <placekey>Cambria County</placekey>
        <placekey>Carbon County</placekey>
        <placekey>Cecil County</placekey>
        <placekey>Centre County</placekey>
        <placekey>Chester County</placekey>
        <placekey>Clearfield County</placekey>
        <placekey>Dauphin County</placekey>
        <placekey>Franklin County</placekey>
        <placekey>Fulton County</placekey>
        <placekey>Harford County</placekey>
        <placekey>Hunterdon County</placekey>
        <placekey>Huntingdon County</placekey>
        <placekey>Indiana County</placekey>
        <placekey>Jefferson County</placekey>
        <placekey>Juniata County</placekey>
        <placekey>Lancaster County</placekey>
        <placekey>Lebanon County</placekey>
        <placekey>Lehigh County</placekey>
        <placekey>Luzerne County</placekey>
        <placekey>Mifflin County</placekey>
        <placekey>Monroe County</placekey>
        <placekey>Montgomery County</placekey>
        <placekey>Northampton County</placekey>
        <placekey>Schuylkill County</placekey>
        <placekey>Somerset County</placekey>
        <placekey>Union County</placekey>
        <placekey>Warren County</placekey>
        <placekey>Washington County</placekey>
        <placekey>York 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 North American 1983</horizdn>
        <ellips>Geodetic Reference System 80</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257222101</denflat>
      </geodetic>
    </horizsys>
    <vertdef>
      <altsys>
        <altdatum>NAVD88 GEOID12B</altdatum>
	      <altres>1.0</altres>
        <altunits>Foot US</altunits>
        <altenc>Explicit elevation coordinate included with horizontal coordinates</altenc>
      </altsys>
    </vertdef>
  </spref>
  <metainfo>
    <metd>20210209</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>Quantum Spatial, Inc.</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>