U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
From the intersection of I-10 and I-210, head west on I-10 for 3.0 km (1.85 mi)
to exit number 23/LA 108 to the junction point at south cities highway, head
South on South cities highway for 2.2 km (1.35 mi) to the intersection at bayou
Dinde rd. head east on bayou Dinde rd for 2.0 km (1.25 mi) to the intersection
at Queenan industrial park rd., then head south on Queenan industrial park rd
for 1.0 km (0.60 mi) to the electronic security gate at the entrance to the west
bank bulk terminal. the benchmarks are located on the loading pier and along
Queenan industrial park rd. the tide gage is anchored into the concrete on the
SW end of the loading platform, 177.2 m (581.4 ft) se of the electronic security
gate at the entrance of the west bank bulk terminal.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 7961 C 2009
DESIGNATION: 876 7961 C
MONUMENTATION: Flange-encased Rod VM#: 19139
AGENCY: National Ocean Survey/Service IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 30° 11.4' N ( 30.19081) LONGITUDE: 93° 18.0' W ( -93.30056)
The primary benchmark is a flange-encased rod located in the vicinity of the
loading pier and along Queenan industrial park rd at Bulk Terminal, 41.7 m
(136.8 ft) SSW of power pole number 11 located along the south side of Queenan
industrial park rd., 23.6 m (77.4 ft) east of power pole number 9 located along
the south side of Queenan industrial park rd., 11.2 m (36.7 ft) SSW of power
pole number 10 located along the south side of Queenan industrial park rd., 7.3
m (24.0 ft) south of the centerline of Queenan industrial park rd., and 0.55 m
(1.80 ft) north of a carsonite witness post. The datum point is set 3 cm below
grade, being the top of a stainless steel rod driven 17.1 m (56.1 ft) to
substantial resistance, in a sleeve extending to a depth of 0.91 m (2.985 ft),
and encased in a 5-inch PVC pipe with NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7961 A 2009
DESIGNATION: 876 7961 A
MONUMENTATION: Bench Mark disk VM#: 19140
AGENCY: National Ocean Survey/Service IDB PID:
SETTING CLASSIFICATION: Concrete OPUS PID#: BBFY21
LATITUDE: 30° 11.4' N ( 30.19028) LONGITUDE: 93° 18.0' W ( -93.30069)
The benchmark is a disk set flush and drilled into the concrete in the SW corner
of the quick release mooring unit pier, 107.5 m (352.7 ft) SSW of the SW corner
of the south vehicle ramp to the loading pier, 33.1 m (108.6 ft) south of the
south beam of the conveyor belt support platform, 17.6 m (57.7 ft) NE of the
tide gage, and 4.5 m (14.8 ft) west of the quick release mooring unit.
BENCH MARK STAMPING: 7961 B 2009
DESIGNATION: 876 7961 B
MONUMENTATION: Bench Mark disk VM#: 19141
AGENCY: National Ocean Survey/Service IDB PID:
SETTING CLASSIFICATION: concrete OPUS PID#: BBFY22
LATITUDE: 30° 11.5' N ( 30.19086) LONGITUDE: 93° 18.0' W ( -93.29972)
The benchmark is a disk set flush and drilled into the concrete seawall on the
east side of a cleat, opposite the south vehicle ramp to the loading pier, 63.9
m (209.6 ft) east of the centerline of the south railroad track running along
the north side of Queenan industrial park rd., 18.0 m (59.1 ft) SSW of the SE
corner of the south vehicle ramp to the loading pier, 17.0 m (55.8 ft) SE of the
SW corner of the south vehicle ramp to the loading pier, and 0.41 m (1.35 ft) SE
of a cleat set in the seawall of the loading pier.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7961 D 2009
DESIGNATION: 876 7961 D
MONUMENTATION: Flange-encased Rod VM#: 19142
AGENCY: National Ocean Survey/Service IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID:
LATITUDE: 30° 11.4' N ( 30.19069) LONGITUDE: 93° 18.1' W ( -93.30133)
The benchmark is a flange-encased rod located 108.1 m (354.7 ft) east of the
electronic security gate at the entrance to the west bank bulk terminal, 57.4 m
(188.3 ft) ESE of the supply line to the "bulk terminal 1 port of lake Charles"
water tower, 11.2 m (36.7 ft) west of the power pole number 8 located along the
south side of Queenan industrial park rd., 5.5 m (18.0 ft) NW of the centerline
of the south railroad track running along the north side of Queenan industrial
park rd., and 11.2 m (36.7 ft) west of a carsonite witness post. The datum
point is set 5 cm below grade, being the top of a stainless steel rod driven
17.1 m (56.1 ft) to substantial resistance, in a sleeve extending to a depth of
0.91m, and encased in a 5-inch PVC pipe with NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 7961 E 2009
DESIGNATION: 876 7961 E
MONUMENTATION: Flange-encased Rod VM#: 19143
AGENCY: National Ocean Survey/Service IDB PID:
SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: BBCW22
LATITUDE: 30° 11.4' N ( 30.19058) LONGITUDE: 93° 18.1' W ( -93.30214)
The benchmark is a flange-encased rod located 84.3 m (276.6 ft) west of power
pole number 8 located along the south side of Queenan industrial park rd., 62.8
m (206.0 ft) SE of the electronic security gate at the entrance to the west bank
bulk terminal, 13.7 m (44.9 ft) NNE of the chain link fence running along the
north side of "Halliburton", 9.1 m (29.9 ft) south of the centerline of the
railroad track running along Queenan industrial park rd., and 13.7 m (44.9 ft)
north of a carsonite witness post. The datum point is set 5 cm below grade,
being the top of a stainless steel rod driven 17.1 m (56.1 ft) to substantial
resistance, in a sleeve extending to a depth of 0.91 m, and encased in a 5-inch
PVC pipe with NGS logo cap.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
T I D A L D A T U M S
Tidal datums at BULK TERMINAL #1 based on:
LENGTH OF SERIES: 9 YEARS
TIME PERIOD: September 2010 - August 2019
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8767816 LAKE CHARLES, CALCASIEU RIVER
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (08/30/2017) = 1.378
MEAN HIGHER HIGH WATER MHHW = 0.409
MEAN HIGH WATER MHW = 0.381
MEAN SEA LEVEL MSL = 0.229
MEAN TIDE LEVEL MTL = 0.225
North American Vertical Datum NAVD88 = 0.194
MEAN LOW WATER MLW = 0.070
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (03/22/2010) = -0.834
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
7961 C 2009 2.961 2.580
7961 A 2009 3.915 3.534
7961 B 2009 4.220 3.839
7961 D 2009 3.814 3.433
7961 E 2009 2.760 2.379
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 6
Station ID: 8767961 PUBLICATION DATE: 09/28/2020
Name: BULK TERMINAL #1
LA
NOAA Chart: 11345 Latitude: 30° 11.4' N ( 30.19019)
USGS Quad: WESTLAKE Longitude: 93° 18.0' W ( -93.30081)
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.