MZ0105 ***********************************************************************
MZ0105  DESIGNATION -  A 6
MZ0105  PID         -  MZ0105
MZ0105  STATE/COUNTY-  MA/HAMPDEN
MZ0105  USGS QUAD   -
MZ0105
MZ0105                         *CURRENT SURVEY CONTROL
MZ0105  ___________________________________________________________________
MZ0105* NAD 83(1986)-  42 06 05.     (N)    072 38 09.     (W)     SCALED
MZ0105* NAVD 88     -        31.380  (meters)     102.95   (feet)  ADJUSTED
MZ0105  ___________________________________________________________________
MZ0105  GEOID HEIGHT-         -28.86  (meters)                     GEOID99
MZ0105  DYNAMIC HT  -          31.371 (meters)     102.92  (feet)  COMP
MZ0105  MODELED GRAV-     980,346.6   (mgal)                       NAVD 88
MZ0105
MZ0105  VERT ORDER  -  FIRST     CLASS II
MZ0105
MZ0105.The horizontal coordinates were scaled from a topographic map and have
MZ0105.an estimated accuracy of +/- 6 seconds.
MZ0105
MZ0105.The orthometric height was determined by differential leveling
MZ0105.and adjusted by the National Geodetic Survey in June 1991.
MZ0105
MZ0105.The geoid height was determined by GEOID99.
MZ0105
MZ0105.The dynamic height is computed by dividing the NAVD 88
MZ0105.geopotential number by the normal gravity value computed on the
MZ0105.Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45
MZ0105.degrees latitude (g = 980.6199 gals.).
MZ0105
MZ0105.The modeled gravity was interpolated from observed gravity values.
MZ0105
MZ0105;                    North         East    Units  Estimated Accuracy
MZ0105;SPC MA M     -   872,960.      106,050.      MT  (+/- 180 meters Scaled)
MZ0105
MZ0105                          SUPERSEDED SURVEY CONTROL
MZ0105
MZ0105.No superseded survey control is available for this station.
MZ0105
MZ0105_MARKER: DB = BENCH MARK DISK
MZ0105_SETTING: 36 = BRIDGE
MZ0105_STAMPING: A 6 1933
MZ0105_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
MZ0105
MZ0105  HISTORY     - Date     Condition        Recov. By
MZ0105  HISTORY     - 1933     MONUMENTED       CGS
MZ0105  HISTORY     - 1934     GOOD             NGS
MZ0105  HISTORY     - 1980     GOOD             NGS
MZ0105  HISTORY     - 19920801 GOOD             USPSQD
MZ0105
MZ0105                          STATION DESCRIPTION
MZ0105
MZ0105''DESCRIBED BY COAST AND GEODETIC SURVEY 1933
MZ0105''AT WEST SPRINGFIELD.
MZ0105''150 FT. SOUTH OF BRIDGE STREET GRADE CROSSING.  500 FT. NORTH OF THE
MZ0105''AGWAN RIVER.  ON SOUTHERN FACE OF WEST SPRINGFIELD B AND A RR STATION.
MZ0105''4 1/2 FT. EAST OF SOUTHWEST CORNER OF STATION.  42 FT. NORTH OF CENTER
MZ0105''LINE OF THE WEST BOUND TRACK.  5 FT. ABOVE TOP OF RAIL.  NOTE--MARK IS
MZ0105''4 FEET EAST OF THE SOUTHWEST CORNER.
MZ0105
MZ0105                          STATION RECOVERY (1934)
MZ0105
MZ0105''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1934
MZ0105''RECOVERED IN GOOD CONDITION.
MZ0105
MZ0105                          STATION RECOVERY (1980)
MZ0105
MZ0105''RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980
MZ0105''AT WEST SPRINGFIELD, SET VERTICALLY IN THE SOUTH FACE OF THE SICO
MZ0105''WAREHOUSE (FORMERLY THE BOSTON AND ALBANY RAILROAD STATION), 1.35
MZ0105''METERS (4.5 FEET) EAST OF THE SOUTHWEST CORNER, 12.8 METERS (42 FEET)
MZ0105''NORTH OF THE CENTER LINE OF THE WESTBOUND TRACK.
MZ0105''THE MARK IS 1.5 M ABOVE TOP OF RAIL.
MZ0105
MZ0105                          STATION RECOVERY (1992)
MZ0105
MZ0105''RECOVERY NOTE BY US POWER SQUADRON 1992 (JLH)
MZ0105''RECOVERED IN GOOD CONDITION.