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Bench Mark Sheet for 9491094, Red Dog Dock AK

Superseded Epoch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Small blue map location marker Unpublished bench mark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  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


To reach the tidal bench marks from the Red Dog Mine, proceed 84 km (52 mi) SW
on the Delong Mountain Transportation System haul road to the end of the road
and the Portside dock.  Follow the overhead conveyor to cell 1 and take the
first exit.  The bench marks are on the dock and alongside the haul road.


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


                 PRIMARY BENCH MARK STAMPING:  1094 A 2003
                         DESIGNATION:          949 1094 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        17440
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID:        
LATITUDE:   67° 34.6' N (  67.57600)          LONGITUDE: 164°  3.8' W (-164.06286)


The primary bench mark set flush in the concrete pad for the stairway and
conveyor support on the Red Dog gravel fill dock, 9.08 m (29.8 ft) south of the
north edge of the dock, 6.38 m (20.9 ft) south of bench mark 949 1094 PETE, 6.20
m (20.3 ft) SE of the west edge (seaward edge) of the dock, 4.33 m (14.2 ft)
east of the west edge of the concrete pad, 1.08 m (3.5 ft) north of the south
edge of the concrete pad, and below the stairway to the conveyor.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


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


                         BENCH MARK STAMPING:  1094 B 2003
                         DESIGNATION:          949 1094 B TIDAL

MONUMENTATION:           Metal Rod                             VM#:        17441
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID#: BBBD23
LATITUDE:   67° 34.6' N (  67.57700)          LONGITUDE: 164°  3.7' W (-164.06147)


The bench mark is set in the tundra 63.48 m (208.3 ft) north of bench mark 949
1094 X3, 34.75 m (114.0 ft) north of the centerline of the conveyor, and 33 m
(108 ft) west of the lowest point of the drainage ditch leading to the tundra
pond. The bench mark is set 15 cm (0.5 ft) below grade, being the top of rounded
off stainless steel rod with a punch mark driven 15.8 m (52 ft) to refusal and
encased in a 6-inch PVC pipe with NGS logo cap.



                         BENCH MARK STAMPING:  1094 C 2003
                         DESIGNATION:          949 1094 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        17442
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57786)          LONGITUDE: 164°  3.5' W (-164.05764)


The bench mark is a disk set flush in a concrete footer near the SE corner of
the Red Dog portsite camp complex, 81.72 m (268.1 ft) west of bench mark 949
1094 X4, 11.08 m (36.4 ft) NW of the SE corner of the fire station, 1.32 m (4.33
ft) north of the north end of the most northerly of two garage doors, 0.30 m
(0.98 ft) west of the east edge of the concrete footer, 0.26 m (0.85 ft) south
of the north edge of the concrete footer, and 0.58 m (1.90 ft) below the metal
flashing on the side of the building.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


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


                         BENCH MARK STAMPING:  1094 D 2003
                         DESIGNATION:          949 1094 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:        17443
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57794)          LONGITUDE: 164°  3.3' W (-164.05483)


The bench mark is a disk set flush in the center of a 1 m (4 ft) wide by 9 m
(29.5 ft) long concrete support base for the conveyor, the first support base
ENE of the ore concentrate silo, 48.06 m (157.7 ft) WSW of bench mark 949 1094
X5, 44.22 m (145.1 ft) ENE of bench mark 949 1094 X4, 24.22 m (79.5 ft) ENE of
the east face of the ore concentrate silo, 4.35 m (14.3 ft) south of the north
edge of the concrete base, and 4.21 m (13.8 ft) north of a survey disk stamped
"Chad 1997".



                         BENCH MARK STAMPING:  TBM PETE 1997
                         DESIGNATION:          949 1094 PETE

MONUMENTATION:           Tidal Station disk                    VM#:        17444
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID:        
LATITUDE:   67° 34.6' N (  67.57606)          LONGITUDE: 164°  3.8' W (-164.06300)


The bench mark is a disk set in the concrete pad for the stairway and conveyor
support on the Red Dog gravel fill dock, 107.7 m (353 ft) SW of bench mark 949
1094 X3, 6.38 m (20.9 ft) north of bench mark 949 1094 A, 6.23 m (20.4 ft) east
of the west edge of the dock, 4.42 m (14.5 ft) east of the west edge of the
concrete pad, 2.70 m (8.9 ft) south of the north edge of the dock, and 0.82 m
(2.7 ft) south of the north edge of the concrete pad.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


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


                         BENCH MARK STAMPING:   
                         DESIGNATION:          949 1094 X3
                         ALIAS:                1094 X3 2003

MONUMENTATION:           Bolt                                  VM#:        17445
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Support base                          OPUS PID:        
LATITUDE:   67° 34.6' N (  67.57650)          LONGITUDE: 164°  3.6' W (-164.06075)


The bench mark is a 0.04 m (0.13 ft) diameter bolt at the base of the first
vertical support for the conveyor as it approaches the dock, the NE'ly most
anchor bolt of four bolts at the base of the NE'ly most vertical support for the
dock conveyor, 107.7 m (353 ft) NE of bench mark 949 1094 PETE, 63.48 m (208.3
ft) south of bench mark 949 1094 B, 15.07 m (49.4 ft) west of the west wall of
the white metal P-10 drive house, 2.10 m (6.9 ft) south of a 0.3 m (1 ft)
diameter fuel pipe at waist height, 1.75 m (5.7 ft) north of the centerline of
the conveyor, and 0.06 m (0.2 ft) above the metal base of support.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


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


                         BENCH MARK STAMPING:  X
                         DESIGNATION:          949 1094 X4
                         ALIAS:                X4

MONUMENTATION:           Tidal Station disk                    VM#:        17446
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete pad                          OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57778)          LONGITUDE: 164°  3.3' W (-164.05553)


The bench mark is set in the NW corner of an octagonal concrete pad for a
cylindrical ore handling silo, 81.72 m (268.1 ft) east of bench mark 949 1094 C,
44.22 m (145.1 ft) WSW of bench mark 949 1094 D, 7.66 m (25.1 ft) west of the
western most bolt at the base of the center support beam under the silo, 0.25 m
(0.8 ft) east of the west edge of the octagonal concrete base, and 0.25 m (0.8
ft) SE of the NW edge of the octagonal concrete base.



                         BENCH MARK STAMPING:   
                         DESIGNATION:          949 1094 X5
                         ALIAS:                1094 X5 2003

MONUMENTATION:           Bolt                                  VM#:        17739
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57825)          LONGITUDE: 164°  3.2' W (-164.05403)


The bench mark is a 0.04 m (0.13 ft) diameter bolt, the NE'ly most anchor bolt
of four bolts at the base of an "A" frame supporting the round metal conveyor
leading up to the cylindrical ore handling silo, 54.56 m (179.0 ft) WSW of bench
mark 949 1094 X6, 48.06 m (157.7 ft) ENE of bench mark 949 1094 D, 8.4 m (28 ft)
SSE of the north edge of the gravel access road, 1.30 m (4.3 ft) NNW of the
centerline of the conveyor, and 0.06 m (0.20 ft) above the metal base of
support.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


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


                         BENCH MARK STAMPING:  1094 X6
                         DESIGNATION:          949 1094 X6

MONUMENTATION:           Chiseled Cross                        VM#:        17740
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Steel girder                          OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57864)          LONGITUDE: 164°  3.2' W (-164.05308)


The bench mark is a chiseled cross cut in the NE'ly most corner of a double
girder steel support at the base of an expansion joint for the round steel
conveyor leading to the cylindrical ore handling silo, 54.56 m (179.0 ft) ENE of
bench mark 949 1094 X5, 6.9 m (23 ft) SSE of the north edge of the gravel access
road, 2.79 m (9.2 ft) NNW of the centerline of the conveyor, 0.57 m (1.9 ft) ENE
of a 0.36 m (1.2 ft) diameter vertical black pipe, and 1.40 m (5 ft) below the
gravel road. 



                         BENCH MARK STAMPING:  1094 F 2005
                         DESIGNATION:          949 1094 F

MONUMENTATION:           Metal Rod                             VM#:        17887
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   67° 34.7' N (  67.57903)          LONGITUDE: 164°  3.5' W (-164.05883)


The bench mark is set in the tundra north of the portsite camp gravel pad, 100.4
m (329 ft) NE of bench mark 1094 E 2005, 100.3 m (329 ft) west of the anemometer
tower at the NE corner of the portsite camp gravel pad, 59.15 m (194.1 ft) NW of
the center of a 0.5 m (2 ft) diameter black pipe running ENE/WSW along the north
edge of the gravel pad. The bench mark is set 2 cm (0.1 ft) below grade, being
the top of a rounded off stainless steel rod with a punch mark driven 4.3 m (14
ft) to refusal and encased in a 6-inch PVC pipe with NGS logo cover.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


                            T I D A L   D A T U M S 


Tidal datums at RED DOG DOCK based on:

     LENGTH OF SERIES:      5 YEARS
     TIME PERIOD:           Nov 04-Oct 05 + May 06-Apr 07 + Jul 07-Jun 10
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:   


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

     HIGHEST OBSERVED WATER LEVEL (02/25/2011)         =  2.259
     MEAN HIGHER HIGH WATER                     MHHW   =  0.269
     MEAN HIGH WATER                            MHW    =  0.240
     MEAN TIDE LEVEL                            MTL    =  0.139
     MEAN SEA LEVEL                             MSL    =  0.135
     MEAN LOW WATER                             MLW    =  0.038
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (11/09/2005)         = -1.761

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     1094 A 2003                                 3.112    2.872
     1094 B 2003                                 3.005    2.765
     1094 C 2003                                 8.144    7.904
     1094 D 2003                                 8.032    7.792
     TBM PETE 1997                               3.144    2.904
     949 1094 X3                                 3.668    3.428
     X                                           8.712    8.472
     949 1094 X5                                 7.721    7.481
     1094 X6                                     6.383    6.143
     1094 F 2005                                 6.697    6.457


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                                                
Station ID: 9491094                         PUBLICATION DATE:  07/21/2011
Name:       RED DOG DOCK                                      
            AK
NOAA Chart: 16005                           Latitude:   67° 34.6' N (  67.57670)
USGS Quad:  NOATAK (C-5)                    Longitude: 164°  3.9' W (-164.06500)


                             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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Products available at 9491094 Red Dog Dock, AK

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services