Bench Mark Sheet for 8540433, Marcus Hook PA

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


To reach the station from the intersection of W. 10th St (Rte 13) and Market St
in Marcus Hook, PA, proceed southeast on Market St for 0.96 km (0.6 mi) to the
intersection with E Delaware St, turn left and proceed northeast for 0.15 km
(0.09 mi) to the entrance of Hueber Launch Services on the right. The bench
marks are located within the Hueber Launch facility, along E Delaware St, along
Market St, and within the Marcus Hook refinery parking area.  The tide gauge is
located offshore on the outer granite ice breaker dolphin southeast of the
Hueber Launch Services facility in the Delaware River.  Access to the tide gauge
requires a vessel.


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


                 PRIMARY BENCH MARK STAMPING:  0433 E 1981
                         DESIGNATION:          854 0433 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2904
AGENCY:                  National Ocean Survey (NOS)           IDB PID:         
SETTING CLASSIFICATION:  Flag pole foundation                  OPUS PID#: BBDC20
LATITUDE:   39° 48.7' N (  39.81222)          LONGITUDE:  75° 24.7' W ( -75.41167)


The primary bench mark is a disk set in the concrete base of the flag pole on
the property of the Delaware City Community Center, 26.88 m (88.2 ft) north of
the SW corner of the Delaware City Community Center, 12.03 m (39.5 ft) NW of the
northern corner of the Delaware City Community Center, 0.63 m (2.1 ft) west of
the outer edge of the flag pole base, and 0.3 m (1 ft) above ground.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


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


                         BENCH MARK STAMPING:  H 10 RESET 1963
                         DESIGNATION:          H 10 RESET 1963

MONUMENTATION:           Tidal Station disk                    VM#:        18158
AGENCY:                  US Coast and Geodetic Survey
                         (USC&GS)                              IDB PID#:  JU0780
SETTING CLASSIFICATION:  Concrete step                         OPUS PID:        
LATITUDE:   39° 48.7' N (  39.81197)          LONGITUDE:  75° 24.8' W ( -75.41361)


The bench mark is a disk set on top of the concrete step at the south entrance
to the guard building, at the entrance to Sunoco Oil Company property, 7.73 m
(25.36 ft) east of the SW corner of the security building, 6.64 m (21.78 ft)
west of the SE corner of the security building, 1.08 m (3,54 ft) north of the
south edge of the sidewalk on the south side of the security building, set 0.20
m (0.66 ft) above street level.



                         BENCH MARK STAMPING:  0433 G 2006
                         DESIGNATION:          854 0433 G

MONUMENTATION:           Tidal Station disk                    VM#:        18159
AGENCY:                  National Ocean Service (NOS)          IDB PID:         
SETTING CLASSIFICATION:  Concrete steps                        OPUS PID:        
LATITUDE:   39° 48.7' N (  39.81103)          LONGITUDE:  75° 24.9' W ( -75.41500)


The bench mark is set in the second step of the first set concrete steps on the
south side of Admin Builing, 31.24 m (102.49 ft) east of the west curb of main
building on south side of main building, 26.53 m (87.04 ft) west of the east
curb on the south side of main building, 9.42 m (30.91 ft) south of double doors
on the south side of main building, 6.74 m (22.11 ft) north of centerline of
drain on the south side of main buliding, 0.29 m (0.95 ft) above the ground and
on the west side of the second step leading to the south side of main buliding.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


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


                         BENCH MARK STAMPING:  HUBER 87
                         DESIGNATION:          HUBER 87

MONUMENTATION:           Tidal Station disk                    VM#:        22242
AGENCY:                  US Army Corps of Engineers            IDB PID:         
SETTING CLASSIFICATION:                                        OPUS PID:        
LATITUDE:   39° 48.7' N (  39.81189)          LONGITUDE:  75° 24.6' W ( -75.40953)


The bench mark is a surface mark set in the outer granite ice breaker of the
Huber launch facility, 10.6 m (34.7 ft) sw of the NE point of the ice breaker,
10.2 m (33.5 ft) NE of the SW point of the ice breaker, 5.7 m (18.7 ft) SE of
the NW edge of the ice breaker, and set flush with the granite surface.



                         BENCH MARK STAMPING:  0433 J 2016
                         DESIGNATION:          854 0433 J

MONUMENTATION:           Flange-encased Rod                    VM#:        22243
AGENCY:                  National OCean Survey/Service (NOS)   IDB PID:         
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   39° 48.8' N (  39.81347)          LONGITUDE:  75° 24.7' W ( -75.41244)


The bench mark is a deep rod mark located in the center grass median of the
divided section of Market St, located 29.9 m (98.1 ft) SW of the base of the
flagpole in the front lawn of the plank house at 221 Market St, 23.4 m (76.8 ft)
NE of Second St and Market St street sign, and 16.6 m (54.5 ft) SE of telephone
pole #4612 on the west side of Market St. The bench mark is recessed 6 cm (2
inches) below grade, encased in a 5 inch NOS logo cap.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


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


                         BENCH MARK STAMPING:  0433 K 2016
                         DESIGNATION:          854 0433 K

MONUMENTATION:           Flange-encased Rod                    VM#:        22244
AGENCY:                  National OCean Survey/Service (NOS)   IDB PID:         
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   39° 48.9' N (  39.81511)          LONGITUDE:  75° 24.8' W ( -75.41353)


The bench mark is a deep rod mark located in the center grass median of the
divided section of Market St, located 32.8 m (107.6 ft) south of the base of the
railroad crossing sign at the intersection of Market St and E Fourth St, 20.0 m
(65.6 ft) north of telephone pole #74 on the west side of Market St, and 16.2 m
(53.1 ft) NW of telephone pole #61 on the east side of Market St. The bench mark
is recessed 6 cm (2 inches) below grade, encased in a 5 inch NOS logo cap.



                         BENCH MARK STAMPING:  0433 L 2016
                         DESIGNATION:          854 0433 L

MONUMENTATION:           Flange-encased Rod                    VM#:        22245
AGENCY:                  National OCean Survey/Service (NOS)   IDB PID:         
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   39° 48.8' N (  39.81319)          LONGITUDE:  75° 24.6' W ( -75.41069)


The bench mark is a deep rod mark located in the grass on the south side of E
Delaware St west of the entrance to the Hueber launch facility, located 20.2 m
(66.3 ft) east of telephone pole #156 on the south side of E Delaware St, 15.6 m
(51.2 ft) west of the northwest corner of the Hueber launch facility warehouse,
and 3.6 m (11.8 ft) south of telephone #73 on the south side of E Delaware Ave.
The bench mark is recessed 24 cm (10 inches) below grade, encased in a 5 inch
NOS logo cap.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


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


                         BENCH MARK STAMPING:  Y 369 1979
                         DESIGNATION:          Y 369

MONUMENTATION:           Vertical Control disk                 VM#:        22929
AGENCY:                                                        IDB PID#:  JU2215
SETTING CLASSIFICATION:  Brass disk crimped to a steel rod     OPUS PID:        
LATITUDE:   39° 49.0' N (  39.81711)          LONGITUDE:  75° 25.3' W ( -75.42228)


The bench mark is at the Marcus Hook Refinery (Sunoco Oil Company), at the
junction of US Highway 13 and New St, located 25.0 m (82.0 ft) SW of the center
of the street leading to a refinery scale house NO. 3, 6.7 m (22.0 ft) SW of the
southwest corner of the concrete base for the Marcus Hook Refinery sign, 6.0 m
(19.7 ft) SE of the edge of the curb on the south side of US Highway 13, 5.1 m
(16.7 ft) NE of a 6-foot high chain link fence, set 12.7 cm (5 inches) below
grade and encased in a 4 inch PVC pipe with a white PVC screw cap.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


                            T I D A L   D A T U M S 


Tidal datums at MARCUS HOOK based on:

     LENGTH OF SERIES:      13 YEARS
     TIME PERIOD:           8/02-7/14, 3/17-2/18
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8551910 REEDY POINT, C&D CANAL


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

     HIGHEST OBSERVED WATER LEVEL (10/30/2012)         =  3.079
     MEAN HIGHER HIGH WATER                     MHHW   =  1.881
     MEAN HIGH WATER                            MHW    =  1.767
     MEAN SEA LEVEL                             MSL    =  0.958
     MEAN TIDE LEVEL                            MTL    =  0.911
     North American Vertical Datum              NAVD88 =  0.908
     MEAN LOW WATER                             MLW    =  0.055
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (03/06/2007)         = -1.087

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     0433 E 1981                                 3.402    1.635
     H 10 RESET 1963                             3.278    1.511
     0433 G 2006                                 3.203    1.436
     HUBER 87                                    2.858    1.091
     0433 J 2016                                 5.221    3.454
     0433 K 2016                                 4.091    2.324
     0433 L 2016                                 2.933    1.166
     Y 369 1979                                  8.581    6.814


Foot Notes:

Bench mark 'Y 369 1979' is based on one differential leveling connection and
does not meet the quality control standards of the NOS. Therefore, caution
should be used when deriving elevations for this mark.

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

                                                                                
Station ID: 8540433                         PUBLICATION DATE:  05/19/2020
Name:       MARCUS HOOK                                       
            PA
NOAA Chart: 12312                           Latitude:   39° 48.7' N (  39.81167)
USGS Quad:  MARCUS HOOK                     Longitude:  75° 24.6' W ( -75.40944)


                             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.

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