BM0582 ***********************************************************************
BM0582  DESIGNATION -  NORTH MERIDIAN
BM0582  PID         -  BM0582
BM0582  STATE/COUNTY-  TX/TRAVIS
BM0582  USGS QUAD   -  AUSTIN EAST (1988)
BM0582
BM0582                         *CURRENT SURVEY CONTROL
BM0582  ___________________________________________________________________
BM0582* NAD 83(1986)-  30 16 26.     (N)    097 44 20.     (W)     SCALED
BM0582* NAVD 88     -       166.204  (meters)     545.29   (feet)  ADJUSTED
BM0582  ___________________________________________________________________
BM0582  GEOID HEIGHT-         -25.82  (meters)                     GEOID99
BM0582  DYNAMIC HT  -         165.977 (meters)     544.54  (feet)  COMP
BM0582  MODELED GRAV-     979,273.8   (mgal)                       NAVD 88
BM0582
BM0582  VERT ORDER  -  FIRST     CLASS II
BM0582
BM0582.The horizontal coordinates were scaled from a topographic map and have
BM0582.an estimated accuracy of +/- 6 seconds.
BM0582
BM0582.The orthometric height was determined by differential leveling
BM0582.and adjusted by the National Geodetic Survey in June 1991.
BM0582
BM0582.The geoid height was determined by GEOID99.
BM0582
BM0582.The dynamic height is computed by dividing the NAVD 88
BM0582.geopotential number by the normal gravity value computed on the
BM0582.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
BM0582.degrees latitude (G = 980.6199 gals.).
BM0582
BM0582.The modeled gravity was interpolated from observed gravity values.
BM0582
BM0582;                    North         East    Units  Estimated Accuracy
BM0582;SPC TX C     - 3,070,230.      949,610.      MT  (+/- 180 meters Scaled)
BM0582
BM0582                          SUPERSEDED SURVEY CONTROL
BM0582
BM0582  NGVD 29     -       166.121  (m)          545.02   (f) ADJ UNCH    1 2
BM0582
BM0582.Superseded values are not recommended for survey control.
BM0582.NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums.
BM0582.See file dsdata.txt to determine how the superseded data were derived.
BM0582
BM0582_MARKER: B = BOLT
BM0582_SETTING: 36 = PIER
BM0582_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
BM0582
BM0582  HISTORY     - Date     Condition        Recov. By
BM0582  HISTORY     - 1872     MONUMENTED       CGS
BM0582  HISTORY     - 1935     GOOD             CGS
BM0582  HISTORY     - 1953     GOOD             NGS
BM0582  HISTORY     - 1983     GOOD             USPSQD
BM0582  HISTORY     - 1990     GOOD             USPSQD
BM0582
BM0582                          STATION DESCRIPTION
BM0582
BM0582''DESCRIBED BY COAST AND GEODETIC SURVEY 1872 (WE)
BM0582''STATION IS IN EASTERN PART OF STATE CAPITOL GROUNDS, HIDDEN IN
BM0582''THICK HEDGE OF PRIVET OR BOXWOOD BETWEEN AUSTIN LONGITUDE
BM0582''STATION (1911) AND IRON FENCE ALONG BRAZOS STREET.  MARKED
BM0582''BY COPPER BOLT IN CENTER OF TOP OF MASSIVE MONUMENT BUILT
BM0582''OF LIMESTONE AND CAPPED WITH VERY HEAVY SLAB.  AUSTIN LATITUDE
BM0582''STATION IS 369.6 FEET DUE S OF STATION.  AUSTIN LONGITUDE
BM0582''STATION (1895) IS 14.5 FEET DUE N AUSTIN LONGITUDE STATION
BM0582''(1911) IS 4.303 METERS (14.12 FEET) N AND 11.707 METERS
BM0582''(38.41 FEET) W OF STATION.
BM0582
BM0582                          STATION RECOVERY (1935)
BM0582
BM0582''RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1935 (VPG)
BM0582''THIS MARK WAS RECOVERED, AND IS IN EXCELLENT CONDITION.
BM0582''IT IS LOCATED ABOUT 12 YARDS S OF THE CAPITOL GREENHOUSE
BM0582''ON THE BRAZOS STREET SIDE OF THE CAPITOL GROUNDS, AND ABOUT
BM0582''15 YARDS W OF THE IRON FENCE ALONG THE W SIDE OF BRAZOS
BM0582''STREET.  THERE IS NO HEDGE HERE NOW.
BM0582
BM0582                          STATION RECOVERY (1953)
BM0582
BM0582''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1953
BM0582''IN AUSTIN.
BM0582''AT AUSTIN, TRAVIS COUNTY, ON CAPITOL HILL, A CROSS ON THE COPPER BOLT
BM0582''IN THE CENTER OF THE TOP OF THE SQUARE STONE PILLAR MARKING THE NORTH
BM0582''END OF THE MERIDIAN LINE ESTABLISHED IN 1872., PRACTICALLY IN BRAZOS
BM0582''STREET, AND PROBABLY HIDDEN IN SHRUBBERY.  ABOUT 14 1/2 FEET NORTH OF
BM0582''THE COPPER BOLT STANDS A BRICK AND CEMENT PIER, WHICH IN 1911 STOOD IN
BM0582''THE MIDDLE OF A LARGE FLOWER BED.
BM0582
BM0582                          STATION RECOVERY (1983)
BM0582
BM0582''RECOVERY NOTE BY US POWER SQUADRON 1983 (JRC)
BM0582''STATION RECOVERED GOOD.  THE CAPITOL GREENHOUSE NO LONGER
BM0582''EXISTS.  IT IS LOCATED ABOUT 40 FEET EAST OF THE AUSTIN LONGITUDE
BM0582''STATION, AND AS OTHERWISE DESCRIBED BY 1935 RECOVERY.
BM0582
BM0582                          STATION RECOVERY (1990)
BM0582
BM0582''RECOVERY NOTE BY US POWER SQUADRON 1990 (GGB)
BM0582''RECOVERED IN GOOD CONDITION.