U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  5

                                                                                
Station ID: 8530591                         PUBLICATION DATE:  04/21/2003
Name:       BELLEVILLE, PASSAIC RIVER                         
            NJ
NOAA Chart: 12337                           Latitude:   40° 47.2' N (  40.78670)
USGS Quad:  ORANGE                          Longitude:  74°  8.8' W ( -74.14670)


To reach the tidal bench marks from the intersection of State Routes 17 and 7 in
North Arlington, proceed west on Route 7 (Belleville Avenue) for 1.0 km (0.6 mi)
to the Route 7 bridge over the Passaic River.  The bench marks are in the
vicinity of the bridge along Route 7 and the gage and tide staff were located
under the bridge on the SW bridge bumper.


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


                 PRIMARY BENCH MARK STAMPING:  F 101 1979
                         DESIGNATION:          F 101

MONUMENTATION:           Bench Mark disk                       VM#:        12914
AGENCY:                  National Geodetic Survey (NGS)        IDB PID#:  KV3412
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID:        
LATITUDE:   40° 47.2' N (  40.78670)          LONGITUDE:  74°  8.9' W ( -74.14830)


The primary bench mark is a disk set vertically in the concrete abutment of the
State Route 21 bridge over Rutgers Street located at the intersection of Main
and Rutgers Street, 14.6 m (48 ft) east of the east curb of Main Street, 11.6 m
(38 ft) north of the north curb of the Rutgers Street, 10.7 m (35 ft) NW of the
bench mark NO 6869 A, 8.5 m (28 ft) NE of a traffic control box, and 1.31 m (4.3
ft) above ground.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                                                
Station ID: 8530591                         PUBLICATION DATE:  04/21/2003
Name:       BELLEVILLE, PASSAIC RIVER                         
            NJ
NOAA Chart: 12337                           Latitude:   40° 47.2' N (  40.78670)
USGS Quad:  ORANGE                          Longitude:  74°  8.8' W ( -74.14670)


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


                         BENCH MARK STAMPING:  0591 A 1975
                         DESIGNATION:          853 0591 A

MONUMENTATION:           Tidal Station disk                    VM#:        12915
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   40° 47.2' N (  40.78670)          LONGITUDE:  74°  8.8' W ( -74.14670)


The bench mark is a disk located within the cemetary grounds of the church at
the intersection of Rutgers Street and State Route 21, 23.77 m (78.0 ft) NW of
the SE corner of the church, 17.22 m (56.5 ft) WSW of the NW corner of the
church, 11.98 m (39.3 ft) south of the centerline of Rutgers Street, 11.31 m
(37.1 ft) NE of a headstone designated "Spear", and 2.87 m (9.4 ft) SW of the
east end of a red block stone wall. The bench mark is set 6 cm (0.2 ft) below
grade, crimped to a copper clad steel rod driven 4.0 m (13 ft) to refusal, and
encased in a PVC pipe with concrete kickblock.



                         BENCH MARK STAMPING:  0591 B 1975
                         DESIGNATION:          853 0591 B

MONUMENTATION:           Tidal Station disk                    VM#:        12920
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   40° 47.2' N (  40.78670)          LONGITUDE:  74°  8.8' W ( -74.14670)


The bench mark is a disk located near the intersection of the Rutgers Street and
Cortland Street, 122 m (400 ft) NW of bench mark 0591 A 1975, 35.11 m (115.2 ft)
south of the SW corner of the 3-story brick Public School NO 1 building, 19.48 m
(63.9 ft) NW of telephone pole BT-817BV, 10.58 m (34.7 ft) east of a metal light
pole, 6.74 m (22.1 ft) north of the north curb of Rutgers Street, and 8.47 m
(27.8 ft) NE of wood utility pole # BT818B.  The bench mark is set 6 cm (0.2 ft)
below grade, crimped to a copper-clad rod driven 2.7 m (9 ft) to refusal, and
encased in a PVC pipe with concrete kickblock.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                                                
Station ID: 8530591                         PUBLICATION DATE:  04/21/2003
Name:       BELLEVILLE, PASSAIC RIVER                         
            NJ
NOAA Chart: 12337                           Latitude:   40° 47.2' N (  40.78670)
USGS Quad:  ORANGE                          Longitude:  74°  8.8' W ( -74.14670)


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


                         BENCH MARK STAMPING:  0591 C 1975
                         DESIGNATION:          853 0591 C

MONUMENTATION:           Tidal Station disk                    VM#:        12921
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   40° 47.2' N (  40.78670)          LONGITUDE:  74°  8.8' W ( -74.14670)


The bench mark is a disk located along the railroad tracks south of Rutgers
Street between Cortland and Valley Streets, 91 m (300 ft) SW of bench mark 0591
B 1975, 24.63 m (80.8 ft) south of the centerline of Rutgers Street, 15.97 m
(52.4 ft) SW of the NW corner of an adjacent 2 story building, 3.51 m (11.5 ft)
west of a wooden utility pole, and 3.05 m (10.0 ft) east of the easternmost
rail. The bench mark is set 6 cm (0.2 ft) below grade, crimped to a copper-clad
rod driven 11.9 m (39 ft) to refusal, and encased in a PVC pipe with concrete
kickblock.



                         BENCH MARK STAMPING:  NO 6869 A
                         DESIGNATION:          6869 A NJGS

MONUMENTATION:           Bench Mark disk                       VM#:        12922
AGENCY:                  New Jersey Geodetic Survey (NJGS)     IDB PID#:  KV3413
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   40° 47.2' N (  40.78670)          LONGITUDE:  74°  8.9' W ( -74.14830)


The bench mark is a disk set in top of a concrete monument ENE of the junction
of Main Street and Rutgers Street, beneath the overpass for State Route 21 over
Rutgers Street, 10.7 m (35 ft) SE of Bench Mark F 101 1979 set vertically in the
abutment of the overpass, 6.1 m (20 ft) east of a traffic light, 1.71 m (5.6 ft)
north of the curb of Rutgers Street, and 0.15 m (0.5 ft) above the street.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                                                
Station ID: 8530591                         PUBLICATION DATE:  04/21/2003
Name:       BELLEVILLE, PASSAIC RIVER                         
            NJ
NOAA Chart: 12337                           Latitude:   40° 47.2' N (  40.78670)
USGS Quad:  ORANGE                          Longitude:  74°  8.8' W ( -74.14670)


                            T I D A L   D A T U M S 


Tidal datums at BELLEVILLE, PASSAIC RIVER based on:

     LENGTH OF SERIES:      3 Months
     TIME PERIOD:           August 1994 - October 1994
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8518750 THE BATTERY, NEW YORK HARBOR


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.886
     MEAN HIGH WATER                            MHW    =  1.782
     North American Vertical Datum              NAVD88 =  0.952
     MEAN SEA LEVEL                             MSL    =  0.938
     MEAN TIDE LEVEL                            MTL    =  0.929
     MEAN LOW WATER                             MLW    =  0.076
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     F 101 1979                                  5.890    4.108
     0591 A 1975                                 7.494    5.712
     0591 B 1975                                 9.354    7.572
     0591 C 1975                                 9.570    7.788
     NO 6869 A                                   4.607    2.825


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

                                                                                
Station ID: 8530591                         PUBLICATION DATE:  04/21/2003
Name:       BELLEVILLE, PASSAIC RIVER                         
            NJ
NOAA Chart: 12337                           Latitude:   40° 47.2' N (  40.78670)
USGS Quad:  ORANGE                          Longitude:  74°  8.8' W ( -74.14670)


                             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 the fixed datums of North American Vertical Datum of 1988 (NAVD88).

NAVD88 is a fixed datum derived from a simultaneous, least squares, minimum
constraint adjustment of Canadian/Mexican/United States leveling observations.
Local mean sea level observed at Father Point/Rimouski, Canada was held fixed as
the single initial constraint.  NAVD88 replaces NGVD29 as the national
standard geodetic reference for heights.  Bench mark elevations relative to
NAVD88 are available from NGS through the World Wide Web at 
National Geodetic Survey.

NGVD29 is a fixed datum adopted as a national standard geodetic reference for
heights but is now considered superseded.  NGVD29 is sometimes referred to as
Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological
Survey Topographic Quads.  NGVD29 was originally derived from a general
adjustment of the first-order leveling networks of the U.S. and Canada after
holding mean sea level observed at 26 long term tide stations as fixed.
Numerous local and wide-spread adjustments have been made since establishment in
1929.  Bench mark elevations relative to NGVD29 are available from the National
Geodetic Survey (NGS) data base via the World Wide Web at 
National Geodetic Survey.

NAVD88 and NGVD29 are fixed geodetic datums whose elevation relationships to
local MSL and other tidal datums may not be consistent from one location to
another.

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 NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.

The NAVD88 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have NAVD88 elevations.
The NAVD88 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, NAVD88 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from NAVD88 elevations listed for
each bench mark in the NGS database.