TXLT Site Information Form TXDOT Continuously Operating Reference Station See Instructions at: ftp://www.igs.org/pub/station/general/sitelog_instr.txt 0. Form Prepared by (full name) : Francine Coloma Date Prepared : 2019-10-17 Report Type : UPDATE If Update: Previous Site Log : txlt_20170907.log Modified/Added Sections : 1,3.7,4.2 1. Site Identification of the GNSS Monument Site Name : Laredo TXDOT TIC Four Character ID : TXLT Monument Inscription : IERS DOMES Number : (A9) CDP Number : (A4) Monument Description : STEEL MAST (1.22m) Height of the Monument : 2.70 m Monument Foundation : concrete block wall Foundation Depth : 0.5 m concrete slab Marker Description : threaded brass level device insert Date Installed : 2009-06-03T00:00Z Geologic Characteristic : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc) Bedrock Type : (IGNEOUS/METAMORPHIC/SEDIMENTARY) Bedrock Condition : (FRESH/JOINTED/WEATHERED) Fracture Spacing : (1-10 cm/11-50 cm/51-200 cm/over 200 cm) Fault zones nearby : No Distance/activity : (multiple lines) Additional Information : The GPS Reference Mark consists of a 3" steel : tubing 4' long mast that is permanently anchored : to a concrete block wall. UNAVCO square leveling : device is utilized. This mast is permanently : anchored to the wall by means of steel plate : welded to the mast with holes that allow : anchoring bolts to pass completely through the : wall to another 1/2 steel plate. The anchoring : bolts pass completely through the wall and are : secured with locking nuts at the ends on each : side of the wall. UNAVCO square leveling device : is utilized This mast is permanently anchored : to the building by means of steel plate welded : to the mast with holes that allow anchoring : bolts to pass completely through the wall to : another 1/2 steel plate. The anchoring bolts : pass completely through the wall and are secured : with locking nuts at the ends on each side of : the wall. : : 2019-Oct-17 site decommissioned 2. Site Location Information City or Town : Laredo State or Province : Texas Country : United States Tectonic Plate : North American Approximate Position (ITRF) X coordinate (m) : -926157.993 Y coordinate (m) : -5571909.880 Z coordinate (m) : 2953027.851 Latitude (N is +) : +274533.87 Longitude (E is +) : -0992614.54 Elevation (m,ellips.) : 192.8 Additional Information : ARP IGS08 POSITION (EPOCH 2005.00) : Computed in Aug 2011 using data through gpswk : 1631. 3. GNSS Receiver Information 3.1 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4614207132 Firmware Version : 1.25 Elevation Cutoff Setting : 5 deg Date Installed : 2009-03-11 Date Removed : 2012-07-20 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : added missing remove date using : next section install 3.2 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4614207132 Firmware Version : 1.31 Elevation Cutoff Setting : 5 deg Date Installed : 2012-07-20 Date Removed : 2012-12-14 Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware updated 3.3 Receiver Type : TRIMBLE NETRS Satellite System : GPS Serial Number : 4614207132 Firmware Version : 1.3-2 Elevation Cutoff Setting : 5 deg Date Installed : 2012-12-14 Date Removed : 2013-11-26T18:20Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Receiver replaced 3.4 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5251K41034 Firmware Version : 4.81 Elevation Cutoff Setting : 5 deg Date Installed : 2013-11-26T19:00Z Date Removed : 2014-05-21T17:28Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware update 3.5 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5251K41034 Firmware Version : 4.85 Elevation Cutoff Setting : 5 deg Date Installed : 2014-05-21T17:31Z Date Removed : 2017-01-03T19:29Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 3.6 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5251K41034 Firmware Version : 5.20 Elevation Cutoff Setting : 5 deg Date Installed : 2017-01-03T19:29Z Date Removed : 2017-09-03T21:16Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Firmware update 3.7 Receiver Type : TRIMBLE NETR9 Satellite System : GPS+GLO Serial Number : 5251K41034 Firmware Version : 5.30 Elevation Cutoff Setting : 5 deg Date Installed : 2017-09-03T21:16Z Date Removed : 2019-09-18T00:00Z Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : Antenna monument moved after 2019-Sep-17 Site decommissioned on 17-OCT-2019 3.x Receiver Type : (A20, from rcvr_ant.tab; see instructions) Satellite System : (GPS+GLO+GAL+BDS+QZSS+SBAS) Serial Number : (A20, but note the first A5 is used in SINEX) Firmware Version : (A11) Elevation Cutoff Setting : (deg) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Temperature Stabiliz. : (none or tolerance in degrees C) Additional Information : (multiple lines) 4. GNSS Antenna Information 4.1 Antenna Type : TRM41249.00 NONE Serial Number : 60054951 Antenna Reference Point : BPA Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Times Microwave Systems LMR 600 Antenna Cable Length : 36 m Date Installed : 2009-03-11 Date Removed : 2013-11-26T18:20Z Additional Information : Antenna replaced 4.2 Antenna Type : TRM57971.00 NONE Serial Number : 5000117036 Antenna Reference Point : BAM Marker->ARP Up Ecc. (m) : 0.0000 Marker->ARP North Ecc(m) : 0.0000 Marker->ARP East Ecc(m) : 0.0000 Alignment from True N : 0 deg Antenna Radome Type : NONE Radome Serial Number : Antenna Cable Type : Times Microwave Systems LMR 600 Antenna Cable Length : 36 m Date Installed : 2013-11-26T19:00Z Date Removed : 2019-09-18T00:00Z Additional Information : Antenna monument moved after 2019-Sep-17 Site decommissioned on 17-OCT-2019 4.x Antenna Type : (A20, from rcvr_ant.tab; see instructions) Serial Number : (A*, but note the first A5 is used in SINEX) Antenna Reference Point : (BPA/BCR/XXX from "antenna.gra"; see instr.) Marker->ARP Up Ecc. (m) : (F8.4) Marker->ARP North Ecc(m) : (F8.4) Marker->ARP East Ecc(m) : (F8.4) Alignment from True N : (deg; + is clockwise/east) Antenna Radome Type : (A4 from rcvr_ant.tab; see instructions) Radome Serial Number : Antenna Cable Type : (vendor & type number) Antenna Cable Length : (m) Date Installed : (CCYY-MM-DDThh:mmZ) Date Removed : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 5. Surveyed Local Ties 5.x Tied Marker Name : Tied Marker Usage : (SLR/VLBI/LOCAL CONTROL/FOOTPRINT/etc) Tied Marker CDP Number : (A4) Tied Marker DOMES Number : (A9) Differential Components from GNSS Marker to the tied monument (ITRS) dx (m) : (m) dy (m) : (m) dz (m) : (m) Accuracy (mm) : (mm) Survey method : (GPS CAMPAIGN/TRILATERATION/TRIANGULATION/etc) Date Measured : (CCYY-MM-DDThh:mmZ) Additional Information : (multiple lines) 6. Frequency Standard 6.1 Standard Type : INTERNAL Input Frequency : (if external) Effective Dates : 2009-03-11/CCYY-MM-DD Notes : (multiple lines) 6.x Standard Type : (INTERNAL or EXTERNAL H-MASER/CESIUM/etc) Input Frequency : (if external) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7. Collocation Information 7.1 Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 7.x Instrumentation Type : (GPS/GLONASS/DORIS/PRARE/SLR/VLBI/TIME/etc) Status : (PERMANENT/MOBILE) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8. Meteorological Instrumentation 8.1.1 Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.1.x Humidity Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy (% rel h) : (% rel h) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.1 Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.2.x Pressure Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (hPa) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.1 Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.3.x Temp. Sensor Model : Manufacturer : Serial Number : Data Sampling Interval : (sec) Accuracy : (deg C) Aspiration : (UNASPIRATED/NATURAL/FAN/etc) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.1 Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.4.x Water Vapor Radiometer : Manufacturer : Serial Number : Distance to Antenna : (m) Height Diff to Ant : (m) Calibration date : (CCYY-MM-DD) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Notes : (multiple lines) 8.5.1 Other Instrumentation : (multiple lines) 8.5.x Other Instrumentation : (multiple lines) 9. Local Ongoing Conditions Possibly Affecting Computed Position 9.1.1 Radio Interference : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.1.x Radio Interference : (TV/CELL PHONE ANTENNA/RADAR/etc) Observed Degradations : (SN RATIO/DATA GAPS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.1 Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.2.x Multipath Sources : (METAL ROOF/DOME/VLBI ANTENNA/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.1 Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 9.3.x Signal Obstructions : (TREES/BUILDLINGS/etc) Effective Dates : (CCYY-MM-DD/CCYY-MM-DD) Additional Information : (multiple lines) 10. Local Episodic Effects Possibly Affecting Data Quality 10.1 Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 10.x Date : (CCYY-MM-DD/CCYY-MM-DD) Event : (TREE CLEARING/CONSTRUCTION/etc) 11. On-Site, Point of Contact Agency Information Agency : Texas Department of Transportation Preferred Abbreviation : TXDOT Mailing Address : 125 E. 11th Street Austin Texas, 78701 Primary Contact Contact Name : Darrell Thames Telephone (primary) : 512-302-2049 Telephone (secondary) : Fax : 512-465-7668 E-mail : darrell.thames@nttdata.com Secondary Contact Contact Name : Michael Cloud Telephone (primary) : Telephone (secondary) : 512-374-5059 Fax : 512-465-7668 E-mail : michael.cloud@nttdata.com Additional Information : (multiple lines) 12. Responsible Agency (if different from 11.) Agency : (multiple lines) Preferred Abbreviation : (A10) Mailing Address : (multiple lines) Primary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Secondary Contact Contact Name : Telephone (primary) : Telephone (secondary) : Fax : E-mail : Additional Information : (multiple lines) 13. More Information Primary Data Center : ftp://geodesy.noaa.gov/cors Secondary Data Center : ftp://alt.ngs.noaa.gov/cors URL for More Information : http://geodesy.noaa.gov/CORS Hardcopy on File Site Map : (Y or URL) Site Diagram : (Y or URL) Horizon Mask : (Y or URL) Monument Description : (Y or URL) Site Pictures : (Y or URL) Additional Information : (multiple lines) Antenna Graphics with Dimensions ftp://www.igs.org/pub/station/general/antenna.gra