U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) To reach the tidal bench marks from the Post Office in Chesapeake, Virginia, proceed north on Battlefield Boulevard for 0.8 km (0.5 mi), then continue west on Interstate 64 toward Suffolk to Exit 291A for I-664 toward Norfolk, then take I-664 to Freeman Avenue (Exit 3), turn left at the light and continue south on Freeman Avenue for 1.1 km (0.7 mi) to Buell Street, then left on Buell Street for 0.5 km (0.3 mi) to the Elizabeth River Terminal on the right. The bench marks are on the terminal property and the tide gage is located on the end of pier No. 2. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 9348 E 1997 DESIGNATION: 863 9348 E MONUMENTATION: Flange-encased Rod VM#: 13895 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID: LATITUDE: 36° 46.8' N ( 36.78033) LONGITUDE: 76° 18.0' W ( -76.29989) The primary bench mark is a stainless steel rod located near an oil storage tank in a grassy area, 60.50 m (198.5 ft) NNE of Warehouse No. 1, 24.29 m (79.7 ft) ESE of the SE corner of the office/break room, 16.09 m (52.8 ft) south of the SE corner of the electrical shop, 2.01 m (6.6 ft) NE of a witness post, and 1.80 m (5.9 ft) south of a telephone pole. The datum point is the top of a stainless steel rod driven 7.60 m (25.0 ft) to refusal, in a grease-filled sleeve extending to a depth of 0.91 m (3.0 ft), and encased inside a 5-inch logo cap.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9348 D 1997 DESIGNATION: 863 9348 D TIDAL MONUMENTATION: Flange-encased Rod VM#: 13899 AGENCY: National Ocean Service (NOS) IDB PID#: AJ4592 SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID#: AJ4592 LATITUDE: 36° 46.9' N ( 36.78186) LONGITUDE: 76° 17.9' W ( -76.29811) The bench mark is a stainless steel rod located near the Buell Street entrance to the Elizabeth River Terminal, 30.60 m (100.4 ft) NE of the NE corner of the main office building, 28.80 m (94.5 ft) south of Pratt Street, 12.71 m (41.7 ft) WNW of Buell Street, and 1.19 m (3.9 ft) SE of a witness post. The datum point is set 0.09 m (0.3 ft) below ground, being the top of a stainless steel rod driven 7.60 m (25.0 ft) to refusal, in a grease-filled sleeve extending to a depth of 0.91 meter (3.0 ft), and encased in a 5-inch logo cap. BENCH MARK STAMPING: 9348 F 2008 DESIGNATION: 863 9348 F MONUMENTATION: Bench Mark disk VM#: 18656 AGENCY: National Ocean Survey/Service(NOS) IDB PID: SETTING CLASSIFICATION: Foundation of stairs OPUS PID: LATITUDE: 36° 46.7' N ( 36.77822) LONGITUDE: 76° 18.1' W ( -76.30128) The bench mark is a disk set flush in a concrete foundation for the stairs leading to a platform of the conveyor belt south of a warehouse number 2, 29.33 m (96.2 ft) south of warehouse number 2, 2.90 m (9.5 ft) east of the west side of a 6.58 m (21.59 ft) X 3.62 m (11.88 ft) concrete foundation for stairs, 0.55 m (1.8 ft) south of the staris leading to a platform on the conveyor belt.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9348 G 2011 DESIGNATION: 863 9348 G MONUMENTATION: Survey disk VM#: 20068 AGENCY: National Ocean Service IDB PID: SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 36° 46.8' N ( 36.78053) LONGITUDE: 76° 18.0' W ( -76.30050) The bench mark is a disk located near the Buell Street on the property of the Elizabeth River Terminal, set flush with the ground in the SE corner of concrete foundation of the main truck scale, 21.10 m (69.2 ft) NNE of the NE corner of ERT shop, 3.00 m (9.8 ft) SE from the SW corner of the main truck scale, 0.20 m (0.7 ft) NW of the SE corner of a 3 m x 3.5 m concrete slab. BENCH MARK STAMPING: 9348 H 2011 DESIGNATION: 863 9348 H MONUMENTATION: Survey disk VM#: 20069 AGENCY: National Ocean Service IDB PID: SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 36° 46.9' N ( 36.78114) LONGITUDE: 76° 18.0' W ( -76.29956) The bench mark is a disk located near the Buell Street on the property of the Elizabeth River Terminal, set flush in the top of a concrete ledge of the foundation of a large oil tank, the bench mark is located 20.70 m (67.9 ft) NNE from NE corner of building ERT 9, 4.80 m (15.7 ft) east from wooden pile with two electrical boxes attached to it, 0.15 m (0.5 ft) west from wall of oil tank, 0.35 m (1.1 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 9348 J 2016 DESIGNATION: 863 9348 J MONUMENTATION: Bench Mark disk VM#: 21973 AGENCY: NOS IDB PID: SETTING CLASSIFICATION: Building foundation OPUS PID: LATITUDE: 36° 46.8' N ( 36.77950) LONGITUDE: 76° 18.1' W ( -76.30150) The bench mark is a brass disk set vertically in the foundation for building ERT 2 located 105.0 m (346.0 ft) north from the southwest corner of building ERT 2, 17.70 m (58.0 ft) east from northeast corner of building ERT 7, 4.00 m (13.1 ft) south of the northwest corner of building ERT 2, and 1.40 m (4.6 ft) above ground. BENCH MARK STAMPING: 9348 K 2016 DESIGNATION: 863 9348 K MONUMENTATION: Bench Mark disk VM#: 21974 AGENCY: NOS IDB PID: SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 36° 46.8' N ( 36.78019) LONGITUDE: 76° 18.1' W ( -76.30139) The bench mark is a brass disk set in the concrete foundation for the fall protection system structure located 36.80 m (120.7 ft) south of the northeast corner of the ERT 6 building, 20.00 m (65.6 ft) north of the southwest corner of the ERT 12 building, and 2.40 m (7.9 ft) east of the west rail for the material transport railroad track.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) T I D A L D A T U M S Tidal datums at MONEY POINT, S. BR. ELIZABETH RIVER based on: LENGTH OF SERIES: 21 YEARS TIME PERIOD: 01/1998-12/2016, 05/2017-04/2019 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8638610 SEWELLS POINT, HAMPTON ROADS Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (11/13/2009) = 2.616 MEAN HIGHER HIGH WATER MHHW = 0.976 MEAN HIGH WATER MHW = 0.912 MEAN SEA LEVEL MSL = 0.478 MEAN TIDE LEVEL MTL = 0.477 MEAN LOW WATER MLW = 0.042 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (01/02/1998) = -0.807 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 9348 E 1997 3.416 2.504 9348 D 1997 2.042 1.130 9348 F 2008 3.272 2.360 9348 G 2011 2.734 1.822 9348 H 2011 3.672 2.760 9348 J 2016 4.180 3.268 9348 K 2016 3.055 2.143
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8639348 PUBLICATION DATE: 06/22/2020 Name: MONEY POINT, S. BR. ELIZABETH RIVER VA NOAA Chart: 12253 Latitude: 36° 46.7' N ( 36.77831) USGS Quad: NORFOLK SOUTH Longitude: 76° 18.1' W ( -76.30169) 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.