CHO1 Site Information Form
     USCG DGPS Continuously Operating Reference Station


0.   Form

0.1  Prepared by (full name)  : Donna Amoroso
     Date Prepared            : 10-SEP-1999
     Report Type              : NEW
     Prepared Using           :

0.2  Prepared by (full name)  : Linda Nussear
     Date Prepared            : 17-MAR-2000
     Report Type              : UPDATE
     Prepared Using           :

0.3  Prepared by (full name)  : Donna Amoroso
     Date Prepared            : 20-FEB-2001
     Report Type              : UPDATE
     Prepared Using           :
     
0.4  Prepared by (full name)  : Nancy Brantner
     Date Prepared            : 23-MAY-2001
     Report Type              : UPDATE
     Prepared Using           :

0.x  Prepared by (full name)  : 
     Date Prepared            : (dd-MMM-yyyy)
     Report Type              : UPDATE
     Prepared Using           :



1.   Site Identification of the GPS Monument

     Site Name                : Chico 1
     Four Character ID        : cho1
     Monument Inscription     :
     IERS DOMES Number        : (XXXXXXXXX)
     CDP Number               : (XXXX)
     Date Installed           : 16-JUL-1999 UT
     Geologic Characteristic  : (BEDROCK/CLAY/CONGLOMERATE/GRAVEL/SAND/etc)
       Bedrock Type           : (IGNEOUS/METAMORPHIC/SEDIMENTARY)
       Bedrock Condition      : (FRESH/JOINTED/WEATHERED)
       Fracture Spacing       : (1-10 cm/10-50 cm/50-200 cm/over 200 cm)
       Notes                  : (multiple lines)
     Additional Information   : (multiple lines)


2.   Site Location Information

     City or Town             : Chico
     State or Province        : California
     Country                  : USA
     Tectonic Plate           : North American
     Approximate Position
       X coordinate (m)       : -2589569.833
       Y coordinate (m)       : -4198612.053
       Z coordinate (m)       :  4029540.392
       Latitude (deg)         :  39.4326 N
       Longitude (deg)        : 121.6650 W
       Elevation (m)          : 16.424 (Ellip Ht)
     Additional Information   : ARP ITRF97 POSITION (EPOCH 1997.0) computed in
                                Aug 1999 using 19 days of data     


3.   GPS Receiver Information

3.1  Receiver Type            : ASHTECH Z-XII3
     Serial Number            : 20101
     Firmware Version         : RC00-1C19
     Date Installed           : 19-JUL-1999 UT
     Additional Information   : Serial # added 23-MAY-2001

3.x  Receiver Type            :
     Serial Number            :
     Firmware Version         :
     Date Installed           : (dd-MMM-yyyy hh:mm UT)
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


4.   GPS Antenna Information

4.1  Antenna Type             : ASH700829.3     SNOW
     Serial Number            : 16043
     Antenna Height (m)       : 0.0
     Antenna Reference Point  : ARP
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : 19-JUL-1999 UT
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : Serial # added 23-MAY-2001

4.x  Antenna Type             :
     Serial Number            :
     Antenna Height (m)       : (m)
     Antenna Reference Point  : (ARP/BCR/BPA)
     Degree Offset from North :
     Antenna Radome Type      :
     Date Installed           : (dd-MMM-yyyy hh:mm UT)
     Date Removed             : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


5.   Local Site Ties

5.x  Monument Name            :
     Site Ref CDP Number      : (XXXX)
     Site Ref Domes Number    : (XXXXXXXXX)
     Differential Components from GPS Mark to Site Reference (ITRS)
       dx (m)                 : (m)
       dy (m)                 : (m)
       dz (m)                 : (m)
     Accuracy (mm)            : (mm)
     Date Measured            : (dd-MMM-yyyy hh:mm UT)
     Additional Information   : (multiple lines)


6.   Frequency Standard

6.1  Standard Type            : INTERNAL
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

6.x  Standard Type            : (H-MASER/CESIUM/QUARTZ/INTERNAL/RUBIDIUM)
       Frequency              :
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


7.   Collocation Information

7.x  Instrumentation Type     : (DORIS/GLONASS/PRARE/SLR/VLBI)
       Status                 : (PERMANENT/MOBILE)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)


8.   Meteorological Instrumentation

8.1  Humidity Sensor Model    : HUMICA H-sensor (pn 16663)
       Manufacturer           : Vaisala
       Data Frequency         : 15 seconds
       Accuracy (% rel h)     : +/-1%(0...90%RH)
			            : +/-2%(90...100%RH)
       Effective Dates        : 15-Jan-2001 - present
       Notes                  : NOAA GSOS # 055

8.2  Pressure Sensor Model    : PTB220
       Manufacturer           : Vaisala
       Data Frequency         : 15 seconds
       Accuracy (mbar)        : +/-0.1
       Height Diff to GPS (m) : 3.5
       Effective Dates        : 15-JAN-2001 - present
       Notes                  : NOAA GSOS # 055

8.3  Temperature Sensor Model : PT 100 RTD 1/s DIN 43760B
       Manufacturer           : Vaisala
       Data Frequency         : 15 seconds
       Accuracy (deg C)       : +/-0.1 @ 20.0C
       Effective Dates        : 15-JAN-2001 - present
       Notes                  : NOAA GSOS # 055

8.4  Water Vapor Radiometer   :
       Manufacturer           :
       Distance to GPS (m)    : (m)
       Elev Diff to GPS (m)   : (m)
       Effective Dates        : (dd-MMM-yyyy - dd-MMM-yyyy)
       Notes                  : (multiple lines)

8.5  Other Instrumentation    : (multiple lines)



9.   On-Site, Point of Contact Agency Information

     Agency                   : USCG
     Mailing Address          : (multiple lines)
     Primary Contact
       Contact Name           : Supervisor, Shore Support (DGPS) C2CEN
       Telephone (primary)    : 757-686-4064
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Secondary Contact
       Contact Name           :
       Telephone (primary)    :
       Telephone (secondary)  :
       Fax                    :
       E-mail                 :
     Additional Information   : (multiple lines)


10.  Responsible Agency (if different from 9.)

     Agency                   : (multiple lines)
     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)


11.  More Information

     URL for More Information :
     Hardcopy on File
       Site Map               : (Y)
       Site Diagram           : (Y)
       Horizon Mask           : (Y)
       Monument Description   : (Y)
       Site Pictures          : (Y)
     Additional Information   : (multiple lines)
     
     Antenna Graphics with Dimensions

     http://www.ngs.noaa.gov/ANTCAL