U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


To reach the tidal bench marks from the intersection of Highway 64 and Highway
66 at the airport, proceed east on Highway 66 for 2.3 km (1.4 mi) to a traffic
light at the corner of Hess Oil Corporation; turn right and continue south for
2.4 km (1.5 mi) to the entrance gate of St. Croix Container Port.  Enter through
the gate, drive past the guard shack, and proceed straight through another gate.
 The bench marks are on the pier and the adjacent pier.  The tide gage is
located on the south face of the pier.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  975 1401 M 1983
                         DESIGNATION:          975 1401 M

MONUMENTATION:           Tidal Station disk                        VM#:     1636
AGENCY:                  National Ocean Survey (NOS)               PID#:  DK7165
SETTING CLASSIFICATION:  Concrete pier deck


The primary bench mark is a disk set flush at the southern end of the concrete
St. Croix Container Port pier, being flush with the ground, 16.46 m (54.0 ft)
east of the SW corner of the pier, 1.68 m (5.5 ft) NE of the NE corner of the
NOS Tide House, 0.82 m (2.7 ft) SW of the NW corner of the SE stop for an
overhead crane, and 0.58 m (1.9 ft) north of the south face of the pier.



                         BENCH MARK STAMPING:  1401 B 1977
                         DESIGNATION:          975 1401 B

MONUMENTATION:           Tidal Station disk                        VM#:     1630
AGENCY:                  National Ocean Survey (NOS)               PID:         
SETTING CLASSIFICATION:  Concrete base


The bench mark is a disk set flush in a concrete base for a mooring bollard at
the NW corner of the Hess Oil Company pier, 12.44 m (40.8 ft) SE of the second
light pole on the west side of the pier, 10.85 m (35.6 ft) NE of a fire hydrant
No. 724, 1.22 m (4.0 ft) west of the most northerly mooring bollard, and 0.21 m
(0.7 ft) above the pier.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  1401 C 1977
                         DESIGNATION:          975 1401 C

MONUMENTATION:           Tidal Station disk                        VM#:     1631
AGENCY:                  National Ocean Survey (NOS)               PID:         
SETTING CLASSIFICATION:  Concrete piping bridge


The bench mark is a disk set flush in the top of the SE corner of a concrete
piping bridge on the Hess Oil Corporation pier, in the corner of a 0.3 m (1 ft)
high concrete wall around some pipes, near the SW corner of tank field No. 56
and a gate leading to the VI Port Authority pier and fire hydrant, 25.05 m (82.2
ft)NW of a red fire hydrant, 21.95 m (72.0 ft) east of the center of a gate
leading to VIPA, 5.61 m (18.4 ft) south of the centerline of the road, and 0.15
m (0.5 ft) above ground level.



                         BENCH MARK STAMPING:  975 1401 H 1983
                         DESIGNATION:          975 1401 H

MONUMENTATION:           Tidal Station disk                        VM#:     1632
AGENCY:                  National Ocean Survey (NOS)               PID:         
SETTING CLASSIFICATION:  Concrete rim of manhole


The bench mark is a disk set flush in the concrete rim of a manhole on the St.
Croix Container Port pier near the Port Authority office and warehouse, 179.5 m
(588.9 ft) SE of the steps at the SE corner of the warehouse, 1.68 m (5.5 ft)
south of a curb running thru a fence to the Hess Oil Company pier, 1.07 m (3.5
ft) north of a Port Authority property fence running east-west, and 0.15 m (0.5
ft) above the pier.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  975 1401 J 1983
                         DESIGNATION:          975 1401 J

MONUMENTATION:           Tidal Station disk                        VM#:     1633
AGENCY:                  National Ocean Survey (NOS)               PID#:  DK7166
SETTING CLASSIFICATION:  Concrete footing


The bench mark is a disk set flush in the concrete footing of the eastern crane
rail track on the St. Croix Container Port pier, 75.96 m (249.2 ft) north of the
south end of the pier, 16.82 m (55.2 ft) east of the west face of the pier, 5.03
m (16.5 ft) SW of the NW corner of the south fueling station, 4.51 m (14.8 ft)
NW of the SW corner of the south fueling station, and 1.80 m (5.9 ft) west of
the west face of the fueling station.



                         BENCH MARK STAMPING:  975 1401 K 1983
                         DESIGNATION:          975 1401 K

MONUMENTATION:           Tidal Station disk                        VM#:     1634
AGENCY:                  National Ocean Survey (NOS)               PID#:  DK7167
SETTING CLASSIFICATION:  Concrete footing


The bench mark is a disk set flush in the concrete footing of the eastern crane
rail track on St. Croix Container Port pier, 34.1 m (112 ft) NW of the fourth
light pole from the south in the west row of lights on the pier, 16.90 m (55.4
ft) east of the west face of the pier, 4.97 m (16.3 ft) SW of the NW corner of
the north fueling station, 4.60 m (15.1 ft) NW of the SW corner of the north
fueling station, and 0.61 m (2.0 ft) west of the east rail.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  975 1401 L 1983
                         DESIGNATION:          975 1401 L

MONUMENTATION:           Tidal Station disk                        VM#:     1635
AGENCY:                  National Ocean Survey (NOS)               PID#:  DK7168
SETTING CLASSIFICATION:  Concrete pier deck


The bench mark is a disk set flush in the NW corner of the concrete St. Croix
Container Port pier, 1.37 m (4.5 ft) south of the NW corner of the pier, 1.07 m
(3.5 ft) west of the SW corner of the NW stop for an overhead crane, 0.98 m (3.2
ft) north of the center of the most northern bollard on the west side of the
pier, and 0.46 m (1.5 ft) east of the west face of the pier.



                         BENCH MARK STAMPING:  ELEV 11.505
                         DESIGNATION:          975 1401 ELEV 11.505

MONUMENTATION:           Survey disk                               VM#:     1637
AGENCY:                  VI Port Authority                         PID:         
SETTING CLASSIFICATION:  Concrete footing


The bench mark is a disk set flush in concrete along the eastern rail for a
crane on the St. Croix Container Port pier, 17.07 m (56.0 ft) east of the west
face of the pier, 15.24 m (50.0 ft) NNW of the NW corner of the south fueling
station, and 0.3 m (1 ft) east of the east rail.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:   
                         DESIGNATION:          975 1401 NO STAMPING 1

MONUMENTATION:           Survey disk                               VM#:     1638
AGENCY:                  VI Port Authority                         PID:         
SETTING CLASSIFICATION:  Concrete footing


The bench mark is a disk set flush in the concrete apron of a trailer jack pad
on the east side of the St. Croix Container Port pier, 41.21 m (135.2 ft) east
of the east end of curb on the south end of the pier, 9.54 m (31.3 ft) SW of the
Port Authority's property fence on the east side, and 1.07 m (3.5 ft) NW of the
SE corner of the trailer jack pad.



                         BENCH MARK STAMPING:  1401 N 1997
                         DESIGNATION:          975 1401 N 1997

MONUMENTATION:           Tidal Station disk                        VM#:    13766
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete manhole cover


The bench mark is a disk set flush in a concrete manhole cover on the north side
of a 2.0 m x 2.0 m (6.6 ft x 6.6 ft) yellow dome-shaped concrete manhole, 48.89
m (160.4 ft) west of the east fence around the port property, 24.11 m (79.1 ft)
east of the east face of a 0.61 m (2.0 ft) high concrete wall around a power
panel box, 22.25 m (73.0 ft) north of the most northerly of 6 light poles that
run down the dock, and  and 0.3 m (1 ft) above the pavement.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                            T I D A L   D A T U M S 


Tidal datums at LIME TREE BAY, ST CROIX based on:

     LENGTH OF SERIES:      18 Years
     TIME PERIOD:           January 1984 - December 2001
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:   


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     HIGHEST OBSERVED WATER LEVEL (11/17/1999)         =  0.788
     MEAN HIGHER HIGH WATER                     MHHW   =  0.216
     MEAN HIGH WATER                            MHW    =  0.214
     MEAN SEA LEVEL                             MSL    =  0.112
     MEAN TIDE LEVEL                            MTL    =  0.109
     MEAN LOW WATER                             MLW    =  0.004
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (05/26/1990)         = -0.233



Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     975 1401 M 1983                             3.223    3.009
     1401 B 1977                                 4.456    4.242
     1401 C 1977                                 4.571    4.357
     975 1401 H 1983                             4.549    4.335
     975 1401 J 1983                             3.228    3.014
     975 1401 K 1983                             3.214    3.000
     975 1401 L 1983                             3.072    2.858
     ELEV 11.505                                 3.224    3.010
     975 1401 NO STAMPING 1                      4.130    3.916
     1401 N 1997                                 4.266    4.052


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  7

                                                                                
Station ID: 9751401                                PUBLICATION DATE:  04/21/2003
Name:       LIME TREE BAY, ST CROIX                           
            VIRGIN ISLANDS
NOAA Chart: 25641                                  Latitude:         17° 41.8' N
USGS Quad:  CHRISTIANSTED                          Longitude:        64° 45.2' W


                             D E F I N I T I O N S


Mean Sea Level (MSL) is a tidal datum determined over a 19-year National
Tidal Datum Epoch.  It pertains to local mean sea level and should not be
confused with any other fixed island datum.

This tide station location has a defined island datum (VIVD09).  Island datums
are specific fixed geodetic datums whose elevation relationship to local MSL
and other tidal datums may not be consistent from one location to another.

Virgin Islands Vertical Datum of 2009 (VIVD09) is a fixed datum derived from
a simultaneous, least squares, minimum constraint adjustment of leveling
observations.  Local mean sea level relative to the 1983-2001 National Tidal
Datum Epoch observed at tide stations 9751401 located at Lime Tree Bay,
St. Croix, 9751381 located at Lameshur Bay, St. John, and 9751639 located at
Charlotte Amalie, St Thomas was held fixed as the single initial constraint.
VIVD09 replaces all previous height system as the national standard geodetic
reference for heights in the Virgin Islands.  Bench mark elevations relative
to VIVD09 are available from NGS through the World Wide Web at 
National Geodetic Survey.

The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique
identifiers for bench marks in the tidal and geodetic databases, respectively.
Each bench mark in either database has a single, unique VM# and/or PID# assigned.
Where both VM# and PID# are indicated, both tidal and geodetic elevations are
available for the bench mark listed.

The VIVD09 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have VIVD09 elevations.
The VIVD09 elevation relationship shown in the table is derived from an average
of several bench mark elevations relative to tide station datum.  As a result of
this averaging, VIVD09 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from VIVD09 elevations listed for
each bench mark in the NGS database.