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     SITE INFORMATION FORM
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0. Form

        Prepared by (full name): Yehuda Bock
        Date                   : August 2, 1993
        Report type            : NEW
 
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

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

4. GPS Antenna

        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 / Keith Stark
        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, stark@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