<?xml version="1.0" encoding="iso-8859-1"?>
<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Dewberry</origin>
        <pubdate>20090817</pubdate>
        <title>San Gabriel LiDAR Survey (East Block)</title>
        <geoform>Map</geoform>
        <onlink>none</onlink>
        <lworkcit>
          <citeinfo>
            <origin>Dewberry</origin>
            <pubdate>20090817</pubdate>
            <title>San Gabriel LiDAR Survey</title>
            <pubinfo>
              <pubplace>Fairfax, VA</pubplace>
              <publish>Dewberry</publish>
            </pubinfo>
            <onlink>none</onlink>
          </citeinfo>
        </lworkcit>
      </citeinfo>
    </citation>
    <descript>
      <abstract>
LIDAR data is remotely sensed high-resolution elevation
data collected by an airborne collection platform. By
positioning laser range finding with the use of 1 second
GPS with 100hz inertial measurement unit corrections;
Terrapoint LIDAR instruments are able to make highly
detailed geospatial elevation products of the ground,
man-made structures and vegetation. The LiDAR flightlines
for this project was planned for a 60% acquisition overlap.
The nominal resolution of this project without overlap is 6
points per square meter. Up to four returns were recorded for
Intensity, Flightline and echo number attributes were provided
for each LiDAR point.
</abstract>
      <purpose>This LiDAR project will support USGS science for the Multi-Hazards Southern California (SoCal) project by providing high accuracy, classified multiple return LiDAR and derivative products, for two areas totaling approximately 81 square miles, of the San Gabriel Area within Los Angeles County, California. Under  Dewberry's contract, the LiDAR data were acquired and processed by Terrapoint USA to support USGS's effort to collect pre-earthquake imagery of three perpendicular profiles along the Sierra Madre fault system to help characterize the geomorphic expression of compressional structures (faults and folds).
At a later date Imagery could also be combined with a post-earthquake LiDAR acquisition to fully map  surface rupture and possible image coseismic fold growth.
</purpose>
      <supplinf>
LiDAR Collection Specfic Supplemental Information:

- General Overview:
The Airborne LiDAR survey was conducted using one OPTECH 3100EA systems
flying at a nominal height of 800 meters AGL with lines were flown in
multiple orientation blocks to best optimize flying time considering
the layout for the project.  The Optech 3100EA system was configured
in two scanner configurations for the acquisition of the San Gabriel
LiDAR project.  Terrapoint modified the scanner configuration during
the acquisition stage of this project in order to maintain the planned
efficiency while reducing the visual effects of the corn rows and
maintaining the scanner field view limitations set out in the contract.

All missions acquired between June 2nd and June 15th, were acquired with
Configuration 1 and all missions acquired between June 16th and June 22nd,
were acquired with Configuration 2.

CONFIGURATION_1
Aircraft Speed = 130 Knots
Data Acquisition Height = 800 meters AGL
Swath Width = 285 m Nominal
Distance Between Flight Lines = 114m
Overlap = 60%
Scanner Field Of View = +/-12.1 degrees
Scan Cutoff = 2 Degrees on either side of scan
Pulse Repetition Rate = 71 Kilohertz
Scan Frequency = 58.9 Hertz
Number of Returns Per Pulse = 4
Beam Divergence: Narrow
Resultant Raw Point Density = 6 pts/m2 without overlap

CONFIGURATION_2
Aircraft Speed = 130 Knots
Data Acquisition Height = 800 meters AGL
Swath Width = 340 m Nominal
Distance Between Flight Lines = 85m
Overlap = 75%
Scanner Field Of View = +/-18 degrees
Scan Cutoff = 6 Degrees on either side of scan
Pulse Repetition Rate = 71 Kilohertz
Scan Frequency = 47.8 Hertz
Number of Returns Per Pulse = 4
Beam Divergence: Narrow
Resultant Raw Point Density = 6 pts/m2 without overlap

The aircraft used for the survey was a Piper PA-31 Navajo, registration C-FVTL.
This aircraft has a flight range of approximately 7 hours or 1025 nautical miles
under optimal conditions. The aircraft was staged from the El Monte Airport (KEMT),
and ferried to the project site for flight operations.

The total site size is 51.7 square miles

- GPS Receivers
A combination of Sokkia GSR 2600 and NovAtel DL-4+ dual
frequency GPS receivers were used to support the airborne
operations of this survey and to establish the GPS control
network.

- Number of Flights and Flight Lines
A total of 8 missions were flown for this site with a flight
time ranging approximately 15.3 online production hours and 205
production flight lines under good meteorological and GPS conditions
to provide complete coverage.

- Reference Coordinate System Used:
Seven National Geodetic Survey (NGS) and two Southern California
Integrated GPS Network (SCIGN) Continuously Operating Reference
Stations were incorporated in a GPS control network to establish
four new temporary control monuments for this project, to maintain
base line distance requirements. The newly established temporary
control points were used to control all flight missions, kinematic
and static ground surveys.

The published horizontal datum of the control points is NAD83NSRS
and the vertical datum NAVD88.

The following are the final coordinates of the newly established control points used in this project:

Station Id;Latitude;Longitude;Ellipsoidal_Height;Orthometric Height
914301;34 05 22.05520;-117 47 05.06989;268.0278;301.5868
914302;34 04 51.19350;-118 02 16.26505;51.7520;86.1686
914303;34 10 47.78100;-118 10 52.20514;437.6259;471.3486
914304;34 05 04.66812;-118 01 56.81072;56.5790;90.9522

The following are the CORS stations observed to establish the new control points used in this project:
CORS-NGS_AZU1; CORS-NGS_CIT1; CORS-NGS_CVHS; CORS-SCIGN_GVRS; CORS-SCIGN_LEEP; CORS-NGS_LORS; CORS-NGS_PKRD; CORS-NGS_PSDM; CORS-NGS_SPMS

For further details concerning the control used in this project including the network adjustment, please see the Geodetic Control Survey Report in Appendix D.

- Geoid Model Used
The Geoid03 geoid model, published by the NGS, was used to transform all ellipsoidal heights to orthometric.

-General LiDAR notes

-Intensity
Please note that Terrapoint standard procedure is to not calibrate or normalize LiDAR intensity; but due to
lower intensity returns for mission o109170a in comparison to the adjoining missions, Terrapoint used the normalize
function in Dashmap for this particular mission.

-Waterbodies
Water is not included in the bare earth ground points for rivers (&gt;10m wide), lakes or ponds (With an axis &gt;100m),
rather it is classified as water on Class 9; all remaining points within the water body were classified to class 1.
Water body delineation was collected using hillshades and intensity images generated from ground DEM and LiDAR
</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>20090530</begdate>
          <enddate>20090618</enddate>
        </rngdates>
      </timeinfo>
      <current>Ground Condition</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>None planned</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-117.983757</westbc>
        <eastbc>-117.790423</eastbc>
        <northbc>34.174634</northbc>
        <southbc>34.072945</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>None</themekt>
        <themekey>ASPRS standards</themekey>
        <themekey>DEM</themekey>
        <themekey>digital elevation model</themekey>
        <themekey>elevation</themekey>
        <themekey>LAS_v1.2</themekey>
        <themekey>laser</themekey>
        <themekey>LiDAR</themekey>
        <themekey>ArcInfo Binary</themekey>
        <themekey>Intensity</themekey>
        <themekey>RawData</themekey>
        <themekey>RINEX</themekey>
        <themekey>ABGPS_IMU</themekey>
        <themekey>OPTECH_3100EA</themekey>
        <themekey>surface model</themekey>
      </theme>
      <place>
        <placekt>None</placekt>
        <placekey>San Gabriel Mountains</placekey>
        <placekey>San Dimas, California</placekey>
        <placekey>Glendora, California</placekey>
        <placekey>Azusa, California</placekey>
        <placekey>Kincaid, California</placekey>
        <placekey>Duarte, California</placekey>
        <placekey>Bradbury, California</placekey>
        <placekey>Butler, California</placekey>
        <placekey>Irwindale, California</placekey>
        <placekey>Los Angeles, California</placekey>
        <placekey>Los Angeles County, California</placekey>
        <placekey>California</placekey>
        <placekey>United States of America</placekey>
        <placekey>SouthWest</placekey>
      </place>
    </keywords>
    <accconst>
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.
</accconst>
    <useconst>
Any conclusions from results of the analysis of this LiDAR
are not the responsibility of Dewberry. The LiDAR data
was thoroughly visually verified to represent the true
ground conditions at time of collection. Users should be
aware of this limitations of this dataset if using for
critical applications.
</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>Dewberry</cntorg>
          <cntper>Tim Blak</cntper>
        </cntorgp>
        <cntpos>Project Manager </cntpos>
        <cntaddr>
          <addrtype>Mailing and physical address</addrtype>
          <address>8401 Arlington Blvd. MS #28</address>
          <city>Fairfax</city>
          <state>Virginia</state>
          <postal>22031</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>703-849-0239 </cntvoice>
        <cntfax>703-849-0182 </cntfax>
        <cntemail>tblak@dewberry.com</cntemail>
        <hours>Monday to Friday, 8:00 - 5:00, Eastern Time</hours>
      </cntinfo>
    </ptcontac>
  </idinfo>
  <dataqual>
    <attracc>
      <attraccr>Raw elevation measurements have been tested to 0.073 meters vertical accuracy at 95 percent confidence level against Terrapoint acquired static GPS points</attraccr>
    </attracc>
    <logic>
All files delivered were verified and tested to
ensure they open and are positioned properly.
</logic>
    <complete>
According to Terrapoint standards; the following aspects of
the LiDAR data was verified during the course of the
project processing:
-Data completeness and integrity
-Data accuracy and errors
-Anomaly checks through full-feature hillshades
-Post automated classification Bare-earth verification
-RMSE inspection of final bare-earth model using kinematic GPS
-Final quality control of deliverable products; ensuring
integrity; graphical quality; conformance to Terrapoint
standards are met for all delivered products.
-On a project level, a coverage check is carried out to ensure no slivers are present
</complete>
    <posacc>
      <horizpa>
        <horizpar>Compiled to meet 0.98 meter horizontal accuracy at the 95 percent confidence level</horizpar>
      </horizpa>
      <vertacc>
        <vertaccr>Raw elevation measurements have been tested to 0.073 meters vertical accuracy at 95 percent confidence level against Terrapoint acquired static GPS points</vertaccr>
      </vertacc>
    </posacc>
    <lineage>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>Terrapoint USA</origin>
            <pubdate>20090817</pubdate>
            <title>San Gabriel LiDAR Survey</title>
            <edition>One</edition>
            <geoform>map</geoform>
            <pubinfo>
              <pubplace>Houston, Texas</pubplace>
              <publish>Terrapoint USA</publish>
            </pubinfo>
            <onlink>www.terrapoint.com</onlink>
            <lworkcit>
              <citeinfo>
                <origin>Terrapoint USA</origin>
                <pubdate>20090817</pubdate>
                <title>San Gabriel LiDAR Survey</title>
                <pubinfo>
                  <pubplace>Houston, Texas</pubplace>
                  <publish>Terrapoint USA</publish>
                </pubinfo>
                <onlink>www.terrapoint.com</onlink>
              </citeinfo>
            </lworkcit>
          </citeinfo>
        </srccite>
        <typesrc>Hard Drive</typesrc>
        <srctime>
          <timeinfo>
            <rngdates>
              <begdate>20090817</begdate>
              <enddate>20090817</enddate>
            </rngdates>
          </timeinfo>
          <srccurr>Ground Condition</srccurr>
        </srctime>
        <srccitea>none</srccitea>
        <srccontr>
LiDAR data representing the San Gabriel Mountain Area to help characterize the geomorphic expression of compressional
structures (faults and folds) mapping in Los Angeles County, California
</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>
- Airborne GPS Kinematic
Airborne GPS kinematic data was processed on-site using
GrafNav kinematic On-The-Fly (OTF) software. Flights were
flown with a minimum of 6 satellites in view (13o above the
horizon) and with a PDOP of better than 4.5. Distances from
base station to aircraft were kept to a maximum of 30 km,
to ensure a strong OTF (On-The-Fly) solution. For
all flights, the GPS data can be classified as excellent,
with GPS residuals of 5cm average but no larger than 12 cm
being recorded.
</procdesc>
        <srcused>GPS Processing</srcused>
        <procdate>200811</procdate>
        <srcprod>GPS</srcprod>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntorg>Terrapoint USA</cntorg>
              <cntper>Claude Vickers</cntper>
            </cntperp>
            <cntpos>Client Program Manager</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>251216 Grogan's Park Drive</address>
              <city>The Woodlands</city>
              <state>Texas</state>
              <postal>77380</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>1-877-80-TERRA</cntvoice>
            <cntfax>1-281-296-0869</cntfax>
            <cntemail>claude.vickers@terrapoint.com</cntemail>
            <hours>Monday to Friday, 8:30 - 4:30, Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>
- Generation and Calibration of laser points (raw data)
Laser data points are generated using Terrapoint's proprietary
laser post-processing software.  This software combines the raw
laser range and angle data file with the finalized GPS/IMU
information. The resulting point cloud has been projected into
the desired coordinate system in TerraSolid's TerraScan in LAS
format. All missions are validated against the adjoining
missions for relative vertical biases and collected GPS kinematic
ground truthing points for absolute vertical accuracy purposes.
On a project level, a coverage check is carried out to ensure no slivers
are present.
</procdesc>
        <srcused>Calibration</srcused>
        <procdate>200905_200907</procdate>
        <srcprod>CAL</srcprod>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntorg>Terrapoint USA</cntorg>
              <cntper>Claude Vickers</cntper>
            </cntperp>
            <cntpos>Client Program Manager</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>251216 Grogan's Park Drive</address>
              <city>The Woodlands</city>
              <state>Texas</state>
              <postal>77380</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>1-877-80-TERRA</cntvoice>
            <cntfax>1-281-296-0869</cntfax>
            <cntemail>claude.vickers@terrapoint.com</cntemail>
            <hours>Monday to Friday, 8:30 - 4:30, Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>
- System Calibration Results
The following are the post calibration results for the San Gabriel data outlined by mission:
Mission Name;Roll Correction(Deg);Pitch Correction (Deg);Scale Correction;Droop Correction;Normalized Intensity;Resulting Calibration Vertical Bias
o109150a;0.0214;-0.0593;1.00792;21R,16L;No;0cm
o109151a;0.0144;-0.0616;1.007721;21R,16L;No;0cm
o109152a;0.013259;-0.0587;1.007509;21R,16L;No;0cm
o109155a;0.009643;-0.06817;1.007518;21R,16L;No;+10cm
o109158a;0.0114;-0.06506;1.007612;21R,16L;No;line 15844 (+0.05cm), Line 15845 (-0.05cm)
o109167a;0.016712;-0.06161;1.00768;21R,16L;No;0cm
o109168a;0.016712;-0.06161;1.00768;21R,16L;No;Lines 16808 and 16809 (-0.05cm)
o109169a;0.0207;-0.0561;1.0079;21R,16L;No;-10cm
-Post Production Vertical Bias Resolution
The following biases were observed when verified with the GPS validation data post ground
classification and review.  The elevations of the LiDAR data were adjusted accordingly: +13.4 cm
The following shift was applied to resolve a GPS Antenna Profile Error in the final LiDAR LAS deliverable and DEM: +10.8cm
</procdesc>
        <srcused>Vertical Bias Resolution</srcused>
        <procdate>200906_200908</procdate>
        <srcprod>Cal_Dz</srcprod>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntorg>Terrapoint USA</cntorg>
              <cntper>Claude Vickers</cntper>
            </cntperp>
            <cntpos>Client Program Manager</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>251216 Grogan's Park Drive</address>
              <city>The Woodlands</city>
              <state>Texas</state>
              <postal>77380</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>1-877-80-TERRA</cntvoice>
            <cntfax>1-281-296-0869</cntfax>
            <cntemail>claude.vickers@terrapoint.com</cntemail>
            <hours>Monday to Friday, 8:30 - 4:30, Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>
- Data Classification and Editing
The data was processed using the software TerraScan, and
following the methodology described herein. The initial
step is the setup of the TerraScan project, which is done
by importing client provided tile boundary index
encompassing the entire project areas. The 3D laser point
clouds, in binary format, were imported into the TerraScan
project and divided in 962 file size optimized tiles
(2.5 million Raw LiDAR Points).  Once tiled, the laser points
were classified using a proprietary routine in TerraScan.
This routine removes any obvious outliers from the dataset
following which the ground layer is extracted from the point
cloud. Theground extraction process encompassed in this routine takes
place by building an iterative surface model. This surface
model is generated using three main parameters: building
size, iteration angle and iteration distance. The
initial model is based on low points being selected by a
"roaming window" with the assumption is that these are the
ground points. The size of this roaming window is
determined by the building size parameter. The low points
are triangulated and the remaining points are evaluated and
subsequently added to the model if they meet the iteration
angle and distance constraints. This process is repeated
until no additional points are added within an iteration.
A second critical parameter is the maximum terrain angle
constraint, which determines the maximum terrain angle
allowed within the classification model. The data is then
manually quality controlled with the use of hillshading,
cross-sections and profiles. Any points found
to be of class vegetation, building or error during the
quality control process, are removed from the ground model
and placed on the appropriate layer. An integrity check is
also performed simultaneously to verify that ground
features such as rock cuts, elevated roads and crests are
present. Once data has been cleaned and complete, it is then
reviewed by a supervisor via manual inspection and through
the use of a hillshade mosaic of the entire project area.
</procdesc>
        <srcused>Processing</srcused>
        <procdate>200907_200908</procdate>
        <srcprod>PRD</srcprod>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntorg>Terrapoint USA</cntorg>
              <cntper>Claude Vickers</cntper>
            </cntperp>
            <cntpos>Client Program Manager</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>251216 Grogan's Park Drive</address>
              <city>The Woodlands</city>
              <state>Texas</state>
              <postal>77380</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>1-877-80-TERRA</cntvoice>
            <cntfax>1-281-296-0869</cntfax>
            <cntemail>claude.vickers@terrapoint.com</cntemail>
            <hours>Monday to Friday, 8:30 - 4:30, Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>
-Deliverable Product Generation
&gt;Deliverable Tiling Scheme
All acquired LiDAR points were retiled in the provided USNG (United States National Grid) tiling scheme with a total of
142 tiles for the East Block being populated; the DEM and Intensity images were clipped to the project boundary and as
result of the clipping were delivered in a total of 84 tiles for the East Block.
&gt;LiDAR Point Data
-The LiDAR point data was delivered in LAS 1.2; POINTDATA RECORD FORMAT 1; adhering to the following ASPRS classification scheme:
Class 1 - Unclassified; Class 2 - Ground; Class 7 - Noise; Class 9 - Water; Class 12 - Overlap
-The LAS files contain the following fields of information (Precision reported in brackets):
Class (Integer); GPS Aboslute (0.0001 seconds); Easting (0.01 meter); Northing (0.01 meter);
Elevation (0.01 meter); Echo Number (Integer 1 to 4); Echo (Integer 1 to 4); Intensity (8 Bit Integer);
Flightline (Integer); Scan Angle (Integer Degree)
-Water is not included in the bare earth ground points for lakes or ponds, rather it is classified as water on Class 9; all remaining points
within the water body were classified to class 1. Water body delineation was collected using hillshades and intensity images generated from ground DEM and LiDAR.
-All points outside project area were assigned to Class 1 - Unclassified.
&gt;Bare Earth DEM
-The bare earth DEM was generated from the bare earth LiDAR points and was gridded to 0.5 meter.
-Areas corresponding to the Lakes and ponds have been flattened to the mean water elevation derived from LiDAR points at time of collection.
-No underwater features were included in the DEM
-Terrapoint has provided the DEM based on two lowest point alorithms (please note that the interpolation method for pixels with no values is not provided in the software vendor documentation) based within
Terrasolid's Terrascan Software.  The grids were generated in ASCII XYZ in the processing tiles; then they were susquentely merged into the USNG tiles and converted to ArcInfo Binary Raster using Terrapoint's proprietary PreTOPS software and ArcView 3.1.
&gt;Intensity Image
- The first return full feature Intensity products were generated from the first return full feature LiDAR points and generated to a 0.5 meter intensity gridded product.
- The grids were generated using lowest intensity values within the grid cell area and delivered in the provided USNG tiles
- The intensity grids were generated in Terracsan then they were susquentely merged into the USNG tiles and converted to ArcInfo Binary Raster using Global Mapper 9.0 and ArcView 3.1.
- Please note that the intensity used to produce the imagery is not calibrated, hence variations acquisition altitude will produce different intensity return values.
&gt;GPS RINEX
GPS RINEX Files of the airborne GPS were provided in softcopy
&gt;ABGPS/IMU Positions
ABGPS/IMU combined files containing x,y,z,pitch,roll,heading,GPS_Time were provided in a comma delimited ASCII format.  All positions were
provided in NAD83 UTM11, NAVD88(Geoid03), GPS seconds (reported to a 10th of a millisecond), meters (reported to a
centimeter) for the XYZ and degrees for the pitch,roll,heading (reported to 6 decimals of a degree).
&gt;RAW Data
- Main Folder
-- o109XXXy.txt =&gt;Laser operational log
-- mgps_o109XXXy.gps =&gt; Aircraft GPS/IMU
-- 9143-01-0026-XXXy.epp =&gt; Graftnav Ephimeris - Base Station
-- 9143-01-0026-XXXy.gpb =&gt; Graftnav format RAW GPS - Base Station
-- 9143-01-0026-XXXy.sta =&gt; Graftnav by-product file
-- mgps_o109XXXy.epp =&gt; Graftnav Ephimeris - Airborne
-- mgps_o109XXXy.gpb =&gt; Graftnav format RAW GPS - Airborne
-- o109XXXy.pos =&gt; Backup of aircraft GPS/IMU
-- o109XXXy.range =&gt; RAW laser data
-- 9143-01-0026-XXXy.pdc =&gt; RAW GPS base station
-- o109XXXy.tree =&gt; Processing file from Dashmap
-- o109XXXy.html =&gt; processing file from Dashmap
-- 109XXXy.dat =&gt; By-Product from NAV system
-- o109XXXy.dxf =&gt; DXF of trajectory
- POSAV Subfolder
-- o109XXXy.* =&gt; Primary GPS IMU data from Aircraft (logged in 12MB segments)
- Intensity_correction_table Subfolder
-- optech1_dashmapv3_5141.res =&gt; Configuration file for system hardware
-- 100kHz_5141.txt =&gt; Intensity Correction Table for system when operating at 100Kh
-- 70kHz_5141.txt =&gt; Intensity Correction Table for system when operating at 70Khz
-- 50kHz_5141.txt =&gt; Intensity Correction Table for system when operating at 50Khz
-- 33kHz_5141.txt =&gt; Intensity Correction Table for system when operating at 33Khz
</procdesc>
        <srcused>Processing_Deliverables</srcused>
        <procdate>200908</procdate>
        <srcprod>PRD_DEL</srcprod>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntorg>Terrapoint USA</cntorg>
              <cntper>Claude Vickers</cntper>
            </cntperp>
            <cntpos>Client Program Manager</cntpos>
            <cntaddr>
              <addrtype>mailing and physical address</addrtype>
              <address>251216 Grogan's Park Drive</address>
              <city>The Woodlands</city>
              <state>Texas</state>
              <postal>77380</postal>
              <country>USA</country>
            </cntaddr>
            <cntvoice>1-877-80-TERRA</cntvoice>
            <cntfax>1-281-296-0869</cntfax>
            <cntemail>claude.vickers@terrapoint.com</cntemail>
            <hours>Monday to Friday, 8:30 - 4:30, Eastern Time</hours>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
  </dataqual>
  <spref>
    <horizsys>
      <planar>
        <gridsys>
          <gridsysn>Universal Transverse Mercator</gridsysn>
          <utm>
            <utmzone>11</utmzone>
            <transmer>
              <sfctrmer>0.999600</sfctrmer>
              <longcm>-117.000000</longcm>
              <latprjo>0.000000</latprjo>
              <feast>500000.000000</feast>
              <fnorth>0.000000</fnorth>
            </transmer>
          </utm>
        </gridsys>
        <planci>
          <plance>Coordinate pair</plance>
          <coordrep>
            <absres>0.01</absres>
            <ordres>0.01</ordres>
          </coordrep>
          <plandu>meter</plandu>
        </planci>
      </planar>
      <geodetic>
        <horizdn>North American Datum of 1983</horizdn>
        <ellips>GRS 80</ellips>
        <semiaxis>6378137.0000000</semiaxis>
        <denflat>298.26</denflat>
      </geodetic>
    </horizsys>
    <vertdef>
      <altsys>
        <altdatum>North American Vertical Datum of 1988</altdatum>
        <altres>0.01</altres>
        <altunits>meter</altunits>
        <altenc>Explicit elevation coordinate included with horizontal coordinates</altenc>
      </altsys>
    </vertdef>
  </spref>
  <eainfo>
    <overview>
      <eaover>
&gt;LiDAR point data in LAS 1.2 (Class 1 - Unclassified; Class 2 - Ground; Class 7 - Noise; Class 9 - Water; Class 12 - Overlap)
The LAS files contain the following fields of information (Precision reported in brackets):
Class (Integer); GPS Week Time (0.0001 seconds); Easting (0.01 meter); Northing (0.01 meter); Elevation (0.01 meter); Echo Number (Integer 1 to 4); Echo (Integer 1 to 4); Intensity (8 Bit Integer); Flightline (Integer); Scan Angle (Integer Degree)
&gt;Bare Earth DEM - ArcInfo ASCII Grid - 0.5m
&gt;First Return Full Feature Intensity - ArcInfo ASCII Grid - 0.5m
&gt;RAW Data - All raw data and values used to produce calibrated point cloud
&gt;RINEX - Airborne GPS data in RINEX format
&gt;ABGPS_IMU - Airborne GPS_IMU data in ASCII format (X,Y,Z,Pitch,Roll,Heading,GPS_Time)
</eaover>
      <eadetcit>none</eadetcit>
    </overview>
  </eainfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>Dewberry</cntorg>
          <cntper>Tim Blak</cntper>
        </cntorgp>
        <cntpos>Project Manager </cntpos>
        <cntaddr>
          <addrtype>Mailing and physical address</addrtype>
          <address>8401 Arlington Blvd. MS #28</address>
          <city>Fairfax</city>
          <state>Virginia</state>
          <postal>22031</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>703-849-0239 </cntvoice>
        <cntfax>703-849-0182 </cntfax>
        <cntemail>tblak@dewberry.com</cntemail>
        <hours>Monday to Friday, 8:00 - 5:00, Eastern Time</hours>
      </cntinfo>
    </distrib>
    <resdesc>
The LiDAR data was captured for Dewberry &amp; Davis for
fire debris flow mapping purposes
</resdesc>
    <distliab>
Users must assume responsibilty to determine the
appropriate use of this LiDAR dataset.

The LiDAR has been compiled to 1 meter vertical accuracy;

Data is representative of ground conditions at time of
acquisition only.
</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>LAS 1.2; ArcInfo ASCII; ASCII; RINEX; Proprietary formats pertaining to RAW data data vendors</formname>
        </digtinfo>
        <digtopt>
          <offoptn>
            <offmedia>Harddrive</offmedia>
            <recfmt>Windows Compatible</recfmt>
            <compat>Windows Compatible</compat>
          </offoptn>
        </digtopt>
      </digform>
      <fees>None.</fees>
      <ordering>Contact USGS</ordering>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20090817</metd>
    <metrd>20090817</metrd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>Dewberry</cntorg>
          <cntper>Tim Blak</cntper>
        </cntorgp>
        <cntpos>Project Manager </cntpos>
        <cntaddr>
          <addrtype>Mailing and physical address</addrtype>
          <address>8401 Arlington Blvd. MS #28</address>
          <city>Fairfax</city>
          <state>Virginia</state>
          <postal>22031</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>703-849-0239 </cntvoice>
        <cntfax>703-849-0182 </cntfax>
        <cntemail>tblak@dewberry.com</cntemail>
        <hours>Monday to Friday, 8:00 - 5:00, Eastern Time</hours>
      </cntinfo>
    </metc>
    <metstdn>FGDC CSDGM</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
  </metainfo>
</metadata>