<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE metadata SYSTEM "http://fgdc.gov/metadata/fgdc-std-001-1998.dtd">
<metadata>
	<idinfo>
		<citation>
			<citeinfo>
				<origin>Quantum Spatial, Inc.</origin>
				<pubdate>20181129</pubdate>
				<title>Pennsylvania 3 County South Central 2018 LiDAR; First Return DSM</title>
				<geoform>Raster digital data</geoform>
			</citeinfo>
		</citation>
		<descript>
			<abstract>
				Product: These are Digital Surface Model (DSM) data for Berks, Luzerne, Schuylkill, and Sullivan Counties, Pennsylvania as part of the required deliverables for the Pennsylvania 3 County South Central 2018 Lidar project. First return lidar points were used to create a 1-meter raster DSM.
				Geographic Extent: The  AOI includes 1 partial and 3 whole counties in Central and Eastern Pennsylvania, covering approximately 2681 total square miles. 
				Dataset Description: The Pennsylvania 3 County South Central 2018 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 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 1.2. The data were developed based on a horizontal projection/datum of NAD 1983 (2011), UTM Zone 18, meters and vertical datum of NAVD 1988 (GEOID 12B), meters. LiDAR data were delivered as processed Classified LAS 1.4 files formatted to 3360 individual 1,500-meter x 1,500-meter tiles, as tiled intensity imagery, and as tiled bare earth DEMs; all tiled to the same 1,500-meter x 1,500-meter schema. Continuous breaklines were produced in Esri file geodatabase format. 
				Ground Conditions: LiDAR was collected in winter and spring of 2018, 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 61 ground control points that were used to calibrate the LiDAR to known ground locations established throughout the project area. An additional 85 independent accuracy checkpoints, 85 in Bare Earth and Urban landcovers (85 NVA points), 64 in Tall Weeds categories (64 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 1-meter 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>
				Raster File Type = IMG
				Bit Depth/Pixel Type = 32-bit float
				Raster Cell Size = 1.0 Meters
				Interpolation or Resampling Technique = Triangulated Irregular Network (TIN), Linear Interpolation, Proprietary
			</supplinf>			
			</descript>
		<timeperd>
			<timeinfo>
				<rngdates>
					<begdate>20171202</begdate>
					<enddate>20180413</enddate>
				</rngdates>
			</timeinfo>
			<current>ground condition</current>
		</timeperd>
		<status>
			<progress>Complete</progress>
			<update>None planned</update>
		</status>
		<spdom>
			<bounding>
				<westbc>-76.81513755</westbc>
				<eastbc>-75.52820051</eastbc>
				<northbc>41.5909578</northbc>
				<southbc>40.13600312</southbc>
			</bounding>
		</spdom>
		<keywords>
			<theme>
				<themekt>None</themekt>
				<themekey>Model</themekey>
				<themekey>Raster</themekey>
				<themekey>DSM</themekey>
				<themekey>Remote Sensing</themekey>
				<themekey>Elevation Data</themekey>
				<themekey>Lidar</themekey>
			</theme>
			<place>
				<placekt>None</placekt>
				<placekey>Commonwealth of Pennsylvania</placekey>
				<placekey>Berks County</placekey>
				<placekey>Luzerne County</placekey>
				<placekey>Schuylkill County</placekey>
				<placekey>Sullivan County</placekey>
			</place>
		</keywords>
		<accconst>No restrictions apply to these data.</accconst>
		<useconst>All deliverable data and documentation shall be free from restrictions regarding use and distribution. Data and documentation provided under this Task Order shall be freely distributable by government agencies. 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.</useconst>
	</idinfo>
	<dataqual>
		<logic>Data cover the entire area specified for this project.</logic>
		<complete>Datasets contain complete coverage of tiles. A visual qualitative assessment was performed to ensure data completeness. Void areas are denoted with the following NODATA value: #.</complete>
		<lineage>
			<procstep>
				<procdesc>First Return DSM Processing: First return and non-noise LAS points were used to create a 1-meter raster DSM in ERDAS .img format. Products were delivered in tiles and county mosaics.</procdesc>
				<procdate>2018</procdate>
			</procstep>
		</lineage>
	</dataqual>
	<spdoinfo>
		<direct>Raster</direct>
		<rastinfo>
			<rasttype>Pixel</rasttype>
			<rowcount>1500</rowcount>
			<colcount>1500</colcount>
		</rastinfo>
	</spdoinfo>
	<spref>
		<horizsys>
			<planar>
				<gridsys>
					<gridsysn>Universal Transverse Mercator</gridsysn>
					<utm>
						<utmzone>18</utmzone>
						<transmer>
							<sfctrmer>0.9996</sfctrmer>
							<longcm>-75</longcm>
							<latprjo>0</latprjo>
							<feast>500000</feast>
							<fnorth>0</fnorth>
						</transmer>
					</utm>
				</gridsys>
				<planci>
					<plance>coordinate pair</plance>
					<coordrep>
						<absres>1.0</absres>
						<ordres>1.0</ordres>
					</coordrep>
					<plandu>meters</plandu>
				</planci>
			</planar>
			<geodetic>
				<horizdn>NAD 1983 (2011)</horizdn>
				<ellips>Geodetic Reference System 80</ellips>
				<semiaxis>6378137.0</semiaxis>
				<denflat>298.257222101</denflat>
			</geodetic>
		</horizsys>
		<vertdef>
			<altsys>
				<altdatum>NAVD 1988 (GEOID 12B)</altdatum>
				<altres>0.01</altres>
				<altunits>meters</altunits>
				<altenc>Explicit elevation coordinate included with horizontal coordinates</altenc>
			</altsys>
		</vertdef>
	</spref>
	<metainfo>
		<metd>20181129</metd>
		<metc>
			<cntinfo>
				<cntorgp>
					<cntorg>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>
				<cntinst>If unable to reach the contact by telephone, please send an email. You should get a response within 24 hours.</cntinst>
			</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>
	</metainfo>
</metadata>