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Bench Mark Sheet for 9414863, Richmond CA

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


To reach the tidal bench marks proceed to the Castro Street/Pt. Richmond exit
from I-580, turn left onto Castro St and continue to Chevron Way (just before
the I-580 underpass), turn right onto Chevron Way and proceed through the main
gate to the first stop sign (access must be arranged in advance by calling the
Wharf Master at (510) 242-4388), then turn left onto Schofield St. and continue
1.0 km (0.6 mi) to paved Chevron Long Wharf causeway. The bench marks are along
the road on causeway of the main fuel pier.  The tide gage is located in room
south of the lab.


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


                 PRIMARY BENCH MARK STAMPING:  3 1934
                         DESIGNATION:          TIDAL 3 STA III 23

MONUMENTATION:           Bench Mark disk                           VM#:     8453
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  HT0940
SETTING CLASSIFICATION:  Concrete block


The primary bench mark is a disk set flush in the top of the west side of a
large octagonal concrete structure at the seaward end of the rip rap pipeline
jetty on the NW side of the paved causeway, 6.55 m (21.5 ft) NW of the edge of
the causeway, 1.37 m (4.5 ft) SW of the SW edge of a wooden footbridge between
the pipelines and concrete bridge leading to a wharf, and 1.00 m (3.3 ft) below
the causeway deck.



                         BENCH MARK STAMPING:  4863 E 1979
                         DESIGNATION:          941 4863 E

MONUMENTATION:           Tidal Station disk                        VM#:     8456
AGENCY:                  National Ocean Survey (NOS)               PID:         
SETTING CLASSIFICATION:  Rock outcrop


The bench mark is set vertically in a shale outcropping at the NE corner of the
transformer yard, 47.00 m (154.2 ft) east of the NE corner of the B544 buck
transformer building, 6.00 m (19.7 ft) north of a fence line, 3.99 m (13.1 ft)
north of the center of a gate leading to the beach, and 1.10 m (3.6 ft) above
the ground.

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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


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


                         BENCH MARK STAMPING:  4863 G 1995
                         DESIGNATION:          941 4863 G

MONUMENTATION:           Tidal Station disk                        VM#:    12902
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete curb


The bench mark is set in a concrete curb along the SE side of Chevron Long Wharf
causeway, 4.11 m (13.5 ft) SE of center of causeway, 0.78 m (2.6 ft) west of
light pole C20, 0.40 m (1.3 ft) above road, and 0.12 m (0.4 ft) NW of SE side of
pier face.  Note:  The bench mark is located north of number 105 painted on
curb.



                         BENCH MARK STAMPING:  4863 H 1995
                         DESIGNATION:          941 4863 H

MONUMENTATION:           Tidal Station disk                        VM#:    12903
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete curb


The bench mark is set in a concrete curb along the Chevron Long Wharf causeway,
18.25 m (59.9 ft) SW of light pole C14, 4.00 m (13.1 ft) SE of center of the
causeway,and 0.09 m (0.3 ft) NW of SE side of pier face.  Note: The bench mark
is located above number 60 painted on curb.

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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


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


                         BENCH MARK STAMPING:  4863 J 1998
                         DESIGNATION:          941 4863 J

MONUMENTATION:           Tidal Station disk                        VM#:    15029
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete foundation


The bench mark is set in concrete base of a tower # 758 supporting power lines
and pipes near the intersection of Schofield and Hill Road located near the long
wharf at the Chevron Oil Refinery in Richmond, 16.60 m (54.5 ft) NE of power
pole # 759, 6.00 m (19.7 ft) north of the middle of Schofield Road, 1.30 m (4.3
ft) NE of SE edge of concrete base, and 0.15 m (0.5 ft) north of south edge of
base.



                         BENCH MARK STAMPING:  4863 K 1998
                         DESIGNATION:          941 4863 K

MONUMENTATION:           Tidal Station disk                        VM#:    15030
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete block


The bench mark is set in a yellow 1.2 m x 1.5 m x 1.5 m (4 ft x 5 ft x 5 ft)
concrete block situated over a pipe on the east side of Schofield Road just
before the overpass and the Long Wharf of the Chevron Oil Refinery in Richmond,
18.30 m (60.0 ft) south of power pole # 736, 4.91 m (16.1 ft) east of the center
of the road, and 1.00 m (3.3 ft) north of north end of guard rail on east side
of road.

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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


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


                         BENCH MARK STAMPING:  4863 L 2007
                         DESIGNATION:          941 4863 L

MONUMENTATION:           Tidal Station disk                        VM#:    18385
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Concrete curb


The bench mark is set in a curb at the south end of the Chevron Long Wharf in
Richmond, CA, 17.60 m (56 ft) SE of center of 121 Causeway Road, 9.70 m (31.8
ft) NW of center of Main Dock Road, and 1.70 m (5.60ft) east of center of
concrete steps leading to lower level of dock.   



                         BENCH MARK STAMPING:  4863 N 2008
                         DESIGNATION:          941 4863 N

MONUMENTATION:           Tidal Station disk                        VM#:    18981
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Stainless steel rod


The bench mark is located along Causeway Road, 14.30 m (47 ft) NW from utility
pole #760, 12.80 m (42 ft) north of the center of a 3 ft. diameter culvert pipe
angled into the ground, and  0.70 m (2.2 ft) south of a height clearance road
sign labeled "14'-11".  The datum point is the top of a stainless steel rod
driven 2.1 m (7 ft) to refusal.     

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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


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


                         BENCH MARK STAMPING:  4863 M 2008
                         DESIGNATION:          941 4863 M

MONUMENTATION:           Tidal Station disk                        VM#:    18982
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Stainless steel rod


The bench mark is  located along Causeway Road, 41.00 m (134.5 ft) SW of utility
pole #765, 12 m (40 ft) south from an old "looking well" #408AT, and 8.25 m (27
ft) east of the center of Causeway Road. The datum point is the top of a
stainless steel rod driven 2.7 m (9 ft) to refusal.     

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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' W


                            T I D A L   D A T U M S 


Tidal datums at RICHMOND, CHEVRON OIL PIER based on:

     LENGTH OF SERIES:      16 YEARS
     TIME PERIOD:           October 1995 - September 2011
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  9414290 SAN FRANCISCO, SAN FRANCISCO BAY


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

     HIGHEST OBSERVED WATER LEVEL (02/06/1998)         =  2.637
     MEAN HIGHER HIGH WATER                     MHHW   =  1.847
     MEAN HIGH WATER                            MHW    =  1.661
     MEAN TIDE LEVEL                            MTL    =  1.002
     MEAN SEA LEVEL                             MSL    =  0.994
     MEAN LOW WATER                             MLW    =  0.343
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/11/2009)         = -0.764

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     3 1934                                      2.850    1.189
     4863 E 1979                                 5.092    3.431
     4863 G 1995                                 4.158    2.497
     4863 H 1995                                 4.154    2.493
     4863 J 1998                                10.821    9.160
     4863 K 1998                                15.369   13.708
     4863 L 2007                                 4.689    3.028
     4863 N 2008                                 8.689    7.028
     4863 M 2008                                 5.097    3.436


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

                                                                                
Station ID: 9414863                                PUBLICATION DATE:  11/10/2011
Name:       RICHMOND, CHEVRON OIL PIER                        
            CALIFORNIA
NOAA Chart: 18653                                  Latitude:         37° 55.7' N
USGS Quad:  SAN QUENTIN                            Longitude:       122° 24.0' 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 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 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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Products available at 9414863 Richmond, CA

Revised: 10/15/2013
NOAA / National Ocean Service
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