**********************************
     SITE INFORMATION FORM
**********************************


0. Form

        Prepared by (full name): Yehuda Bock and Jeff Behr
        Date                   : November 3, 1994
        Report type            : Update (receiver, firmware upgrade)
 
1. Site Identification of the GPS monument

        Site Name              : Lake Mathews PGGA station
        4 char ID              : MATH
        Monument Inscription   : None
        IERS DOMES Number      : 40474M001      (Altamimi, 22-NOV-93)
        CDP Number             : Not assigned
        Date                   : April 14, 1993
        Additional information : PGGA - Permanent GPS Geodetic Array

2. Site Location

        City                   : Lake Mathews Water Reservoir
        Country                : Riverside County, California USA
        Tectonic Plate         : Pacific-North America plate boundary
        Additional information : ITRF91 coordinates (m) --
                                 X -2443215.2705
                                 Y -4706037.5592
                                 Z  3533477.5593
                                 Epoch 1993.4449

3. GPS Receiver

   (a)  Type                   : Trimble 4000 SSE
        Serial Number          : 3301A02256
        Firmware Version       : NAV 5.52
        Date                   : April 14, 1993

   (b)  Type                   : Trimble 4000 SSE
        Serial Number          : 3440A07987 (Loaner unit)
        Firmware Version       : NAV 6.04
        Date                   : October 24, 1994

   (c)  Type                   : Trimble 4000 SSE
        Serial Number          : 3301A02256
        Firmware Version       : NAV 6.04
        Date                   : November 2, 1994
        Note                   : 12 channel upgrade

4. GPS Antenna

 (a-c)  Type                   : 4000ST L1/L2 GEOD
        Serial Number          : 3250A66680
        Date                   : April 14, 1993

        Vertical Antenna Height: 0.7075 m
        Antenna Reference Point: BPA (Bottom of Preamplifier)
        Date                   : April 14, 1993

5. Local Site Ties -- In progress
        
6. Frequency standard

        H-maser /   /   Cesium /   /    Quartz /   /     Internal / X /
        Other (specify)        :
        Date                   : April 14, 1993

7. Collocation -- None

8. On-site, Point of Contact Agency Information 

        Agency                 : Riverside County Flood &
                                 Water Conservation District
        Contact                : Bill Young
        Address                : P.O. Box 1033
                                 Riverside, CA 92502
        Telephone              : (909) 275-1223
        E-mail                 : 
        Fax                    : (909) 788-9965

9. Responsible Operations Agency 
   (if different from item 8)

        Agency                 : Scripps Institution of Oceanography
        Contact                : Yehuda Bock / Jeff Behr
        Address                : IGPP 0225, Scripps Institution of Oceanography
                                 9500 Gilman Drive, La Jolla, CA 92093-0225
        Telephone              : (619) 534-7692 (0229/5292)
        E-mail                 : bock@pgga.ucsd.edu, behr@pgga.ucsd.edu
        Fax                    : (619) 534-5332 (8090)

10. Please insert here the character graphics corresponding to the 
antenna type. Check, complete or change if necessary the antenna 
dimensions.


               Trimble: 4000ST L1/L2 GEOD

                       ----+----                          <-- 0.070  L1
                    /      +      \                       <-- 0.068  L2
++----------------+-----------------+-----------------++  <-- 0.063  TGP
++---------------+-------------------+----------------++  <-- 0.060  BGP
                 |                   |
                  |                 |
                   |               |
                    +------x------+                   <-- 0.000  ARP=BPA

                    <--  0.140  -->                           BPA
                 <--     0.155     -->                        TPA
 <--                     0.467                      -->        NOTCHES
<--                      0.483                       -->        EDGE 


   ARP: Antenna Reference Point
   L1 : L1 Phase Center                   L2 : L2 Phase Center
   TGP: Top of Ground Plane               BGP: Bottom of Ground Plane
   TPA: Top of Preamplifier               BPA: Bottom of Preamplifier

11. Hard copy information

    The next items should be compiled and sent to the Central Bureau
(see original IGS Station Information Report, or contact the CB for
forms).

    Please mark 'X' if on file or date expected to be available.

        Site Map               :
        Site Diagram           :
        Horizon Mask           :
        Monument descption   :
        Site pictures          :