CHWK Site Information Form International GPS Service 0. Form Prepared by (full name) : Michael Schmidt Date Prepared : 17-NOV-1998 Report Type : NEW Prepared Using : 1. Site Identification of the GPS Monument Site Name : Chilliwack Four Character ID : CHWK Monument Inscription : 987020 IERS DOMES Number : 40142M001 CDP Number : Date Installed : 17-NOV-1998 Geologic Characteristic : crushed gravel on bedrock (see below) Bedrock Type : covered by gravel - see below Bedrock Condition : see below Fracture Spacing : see below Notes : see below Additional Information : This station is part of the Western Canada : Deformation Array (WCDA) as well as the Canadian : Active Control System (CACS). The following : information is current as of 17-NOV-98: : ************************************************ : The GPS reference mark consists of a stainless : steel plate with a forced centred bolt. The : stainless steel plate is the top surface of a : stainless steel pedestal mounted on top of a : concrete water reservoir. The pedestal is : 1.2 metres high, 15.2 cm in diameter. : The antenna is fastened to the pedestal using a : tamper resistant mechanism which permits : orientation of the antenna. : The antenna and choke ring assembly are protected : by an acrylic dome. : The water reservoir is constructed on top of a : compacted layer of gravel, situated on top of : bedrock and compacted till. : The stainless steel GPS pedestal is attached to the : concrete using stainless steel threaded rod and : epoxy based grout. The pedestal is mounted over : one of four support columns within the reservoir. : Please see contact information below for : more information regarding the GPS antenna : pedestal, tamper resistant mecahnism, etc.. 2. Site Location Information City or Town : Chilliwack State or Province : B.C. Country : Canada Tectonic Plate : North America Approximate Position X coordinate (m) : -2215259.850 Y coordinate (m) : -3543997.170 Z coordinate (m) : 4802099.000 Latitude (deg) : +49.1566 Longitude (deg) : +237.9916 Elevation (m) : +170 Additional Information : 3. GPS Receiver Information 3.1 Receiver Type : ROGUE SNR-8000 Serial Number : 297 Firmware Version : 3.2 link 1995/03/09 Date Installed : 17-NOV-1998 23:00 UT Date Removed : Additional Information : Currently Installed 4. GPS Antenna Information 4.1 Antenna Type : DORNE MARGOLIN T Serial Number : 94368 Antenna Height (m) : 0.000 Antenna Reference Point : ARP Degree Offset from North : 0 Antenna Radome Type : acrylic (UNAVCO type) Date Installed : 17-NOV-1998 23:00 UT Date Removed : Additional Information : ref. Antenna Diagram 'A' below : Antenna p/n 7490582-2 : Currently Installed 5. Local Site Ties NONE 6. Frequency Standard 6.1 Standard Type : clock steering Frequency : Effective Dates : 17-NOV-1998 23:00 UT Notes : Currently Installed 7. Collocation Information NONE 8. Meteorological Instrumentation NONE 9. On-Site, Point of Contact Agency Information Agency : Geological Survey of Canada Mailing Address : P.O. Box 6000 : 9860 West Saanich Rd. : Sidney, B.C. : Canada V8L 4B2 Primary Contact Contact Name : Michael Schmidt Telephone (primary) : 250-363-6760 Telephone (secondary) : 250-363-6500 Fax : 250-363-6565 E-mail : schmidt@pgc.nrcan.gc.ca Secondary Contact Contact Name : Herb Dragert Telephone (primary) : 250-363-6447 Telephone (secondary) : 250-363-6500 Fax : 250-363-6565 E-mail : dragert@pgc.nrcan.gc.ca Additional Information : 10. Responsible Agency (see No. 9.) 11. More Information URL for More Information : www.pgc.nrcan.gc.ca/geodyn.htm Hardcopy on File Site Map : (Y) Site Diagram : (Y) Horizon Mask : (Y) Monument Description : (Y) Site Pictures : (Y) Additional Information : Hardcopy Information available from www site or : site contact Antenna Graphics with Dimensions: Antenna Diagram A ***************** TURBOROGUE: DORNE MARGOLIN T (Allen Osborne Design) (not to scale) . . . . . . . . . . . . . . . . . . .<-- ACRYLIC DOME . . . . . . . . . . . . . ----- . . . . / + \ . <-- 0.128 L2 . | + | . <-- 0.110 L1 . +-----------------------------------------------+ . <-- 0.102 TCR . | | . . | | . . | | . . | | . . +-+------------------------------------------------+-+ . <-- 0.038 . +-------------------+-------------+------------------+ . <-- 0.035 BCR . | | | | | | . STAINLESS STEEL | | | | | | SECURITY BOLT | | +------X------+ <----|-|------------- 0.000 ARP | | * * | | ============ * * ============ * * STAINLESS STEEL ============ * * ============ SECURITY RING * * * * STAINLESS * * STEEL * * PEDESTAL X ... Antenna Reference Point (ARP) AND Monument Reference Point L1 : L1 Phase Center L2 : L2 Phase Center TCR: Top of Chokering BCR: Bottom of Chokering