17-148_DUVAL_CO_BORROW_SITE_SURVEY_REPORT.pdf

HYDROGRAPHIC SURVEYING SECTION, CESAJ-OD-NH

http://www.saj.usace.army.mil/Divisions/Operations/Branches/HydroSurvey/index.htm

SURVEYOR’S REPORT

HYDROGRAPHIC SURVEY

DUVAL COUNTY BORROW AREA

SURVEY NO. 17-148

Survey Report: Fran Woodward, U.S, Army Corps of Engineers, Jacksonville District

Project: Duval County Borrow Area, After Dredge Survey.

Location: Atlantic Ocean, east of Jacksonville Beach, Duval County, Florida

Date of Survey: Jun 27-28, 2017.

Right of Access: No issues.

Personnel: SV-FLORIDA II Captain: Rory Riker SV-FLORIDA II System Operator: Rob Jenkins, Chad Scheler

Datum: Horizontal coordinates are referenced to the State Plane Coordinate System, Florida East Zone 0901, North American Datum of 1983 (NAD83). Elevations were referenced to NAVD 1988.

Instruments: The following instruments were used for data collection:

Survey Vessel: SV-FLORIDA II Data Collection Software: HYPACK 2016a Sounder: R2 Sonic Model 2024 Multibeam System Positioning: Applanix PosMV 320 V5 Trimble SPS 855 Base Receiver/ TDL450H Base Radio IMU: Applanix PosMV 320 V5 Field Procedures: This survey was performed utilizing Real-Time Kinematic (RTK) GPS using the permanent base station “CHARLIE TOWER ARP” located at Mayport Naval Base. (Station information can be found in Appendix A). All tidal reductions were obtained utilizing Real-Time Kinematic GPS (RTK) and were referenced to NAVD 1988. Tide staff checks were performed before and after daily survey operations against a MLLW tide board set from monument “STARK” (NOAA station information for this area can be found in Appendix B).

During the tide checks, the KTD file (CamdenGA-Nassau-Duval-StJohns-Flagler_01Feb2011.ktd) was turned on in HYPACK and the MLLW reading was checked against the RTK tide reading. Once checked, the KTD file was turned off and survey data was collected relative to NAVD 1988. All notes pertaining to tidal reduction checks and sound velocities can be observed on the log sheets recorded at the time of survey. The vessels draft was determined prior to survey operations through a Bar Check procedure.

Control Point PID X Coordinate (ft) Y Coordinate (ft) GEOID Model

Elevation (ft)

NAVD88 MLLW

STARK BBBZ99 2012A 8.53 11.68

CHARLIE TOWER ARP BBDC09 528,401.08 2,204,696.11 2012A 28.90

Processing: Upon completion of the survey the single beam data was processed in Hypack and sounding spikes were removed. Cross sections were also produced in comparison with the previous survey and checked within survey accuracies.

MAP SHEET NOTES:

1. REFER TO SURVEY NO. 17-148.

2. DEPTHS DEPICTED BY THIS SURVEY ARE REFERENCED TO NAVD 1988.

3. TIDAL REDUCTIONS WERE OBTAINED USING REAL-TIME KINEMATIC (RTK) GPS.

4. ALL ELEVATIONS ARE BELOW THE CHART DATUM UNLESS PRECEDED BY A (+) SIGN.

5. PLANE COORDINATES ARE BASED ON THE TRANSVERSE MERCATOR PROJECTION FOR THE EAST ZONE OF FLORIDA AND

REFERENCED TO NORTH AMERICAN DATUM OF 1983 (NAD83).

6. THIS SURVEY WAS PERFORMED USING REAL-TIME KINEMATIC (RTK) GPS POSITIONING WITH THE FOLLOWING

REFERENCE BASE LOCATION:

REFERENCE STATION LOCATED AT "CHARLIE TOWER” (OPUS PID = BBDC09)

TIDE STAFF LOCATED FROM "STARK” (OPUS PID = BBBZ99)

7. VERTICAL MEASUREMENTS WERE MADE USING A R2SONIC MODEL 2024 MULTIBEAM SYSTEM OPERATING AT 240KHZ.

PLOTTED SOUNDINGS ARE IN HIGH FREQUENCY (240 KHZ).

VESSEL DATE OF SURVEY AREA SURVEYED

SV-FLORIDA II 27-28 JUN 2017 DUVAL COUNTY BORROW AREA

8. AIDS TO NAVIGATION WERE NOT LOCATED DURING THIS SURVEY.

9. THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULTS OF SURVEYS MADE ON THE DATES INDICATED ABOVE AND CAN ONLY BE CONSIDERED AS INDICATING THE GENERAL CONDITIONS AT THAT TIME. THIS CHART IS SOLELY FOR THE DISTRIBUTION OF AVAILABLE DEPTHS AT THE TIME OF THE SURVEY AND IS NOT TO BE USED FOR NAVIGATION.

10. SURVEY ACCURACY PERFORMANCE STANDARDS, QUALITY CONTROL, AND QUALITY ASSURANCE REQUIREMENTS WERE FOLLOWED IN ACCORDANCE WITH USACE EM 1110-2-1003, HYDROGRAPHIC SURVEYING, 30 NOV 13.

Appendix A

STARK

CHARLIE TOWER ARP

Appendix B

U.S. DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration National Ocean Service

Station ID: 8720211 PUBLICATION DATE: 02/08/2011 Name: WWTD, MAYPORT NAVAL STA., ST JOHNS RIVER

FLORIDA

NOAA Chart: 11490 Latitude: 30° 24.0' N USGS Quad: MAYPORT Longitude: 81° 24.8' W

T I D A L D A T U M S

Tidal datums at WWTD, MAYPORT NAVAL STA., ST JOHNS RIVER based on:

LENGTH OF SERIES: 1 YEAR

TIME PERIOD: November 2003 - October 2004

TIDAL EPOCH: 1983-2001

CONTROL TIDE STATION: 8720218 BAR PILOTS DOCK, ST JOHNS RIVER

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

METERS:

HIGHEST OBSERVED WATER LEVEL (09/27/2004) = 2.394

MEAN HIGHER HIGH WATER (MHHW) = 1.570

MEAN HIGH WATER (MHW) = 1.478

NORTH AMERICAN VERTICAL DATUM-1988 (NAVD) = 0.959

MEAN SEA LEVEL (MSL) = 0.780

MEAN TIDE LEVEL (MTL) = 0.764

MEAN LOW WATER (MLW) = 0.048

MEAN LOWER LOW WATER (MLLW) = 0.000

LOWEST OBSERVED WATER LEVEL (03/08/2005) = -0.557

National Geodetic Vertical Datum (NGVD 29)

Bench Mark Elevation Information In METERS above:

Stamping or Designation MLLW MHW

0211 A 1995 3.646 2.168 0211 B 1995 3.271 1.793 0211 C 1995 3.273 1.795 K 324 1970 3.483 2.005

TUG 1989 JAX. FL. 3.703 2.225

MP-7 1979 DET 4 GSS 3.683 2.205

http://www.ngs.noaa.gov/cgi-bin/ngs_opsd.prl?PID=BC0464&EPOCH=1983-2001