SPECS_Appendix B - Geophysical Surveys_C6_PART_1.pdf
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- Solicitation number
- W912HY24B0021
About this file
This document is an appendix to a Request for Proposal (RFP) for the Sabine-Neches Waterway Channel Improvement Project (SNWWCIP) in Jefferson County, Texas. The appendix, titled "Geophysical Surveys," provides detailed technical specifications and requirements for conducting geophysical surveys as part of the project.
The key details include the solicitation number (W912HY24B0021), the federal agency involved (Department of the Army Corps of Engineers Engineering District Galveston), and the planned pre-bid conference on June 28, 2024. The appendix outlines the required geophysical survey methods, data collection and processing standards, deliverables, and other technical specifications. It does not provide specific pricing terms or set-asides, but refers to the main RFP document for those details.
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File Number SN XXX-XXX Solicitation No: W912HY21XXXX
DOCUMENT 02 00 10
APPENDIX B
Geophysical Surveys This Appendix Contains the Following
(Provided as a Separate PDF):
1. Magnetometer and Side Scan Sonar Plan View Sheets.
2. Hazard Survey Methodology Report, Sabine-Neches Waterway
Channel Improvement Report, Appendix G from Geotechnical Investigation Prepared by Fugro USA Land, dated November 8, 2019.
3. Geophysical Survey Maps Developed by Burrow Global Based on Surveys Performed During 2018 (Pipeline Identification Survey).
4. Geophysical Survey Maps Developed from Access 3D Solutions Based on Surveys Performed During March 2020.
File Number SN 0101-0307 Solicitation No: W912HY24B0021
- THIS PAGE WAS INTENTIONALLY LEFT BLANK -
File Number SN XXX-XXX Solicitation No: W912HY21XXXX
DOCUMENT 02 00 10
(Part 1 of 4)
Geophysical Surveys
This Appendix Contains the Following (Provided as a Separate PDF):
1. Magnetometer and Side Scan Sonar Plan View Sheets.
2. Hazard Survey Methodology Report, Sabine-Neches Waterway
Channel Improvement Report, Appendix G from Geotechnical Investigation Prepared by Fugro USA Land, dated November 8, 2019.
3. Geophysical Survey Maps Developed by Burrow Global Based on Surveys Performed During 2018 (Pipeline Identification Survey).
4. Geophysical Survey Maps Developed from Access 3D Solutions Based on Surveys Performed During March 2020.
File Number SN 0101-0307 Solicitation No: W912HY24B0021
- THIS PAGE WAS INTENTIONALLY LEFT BLANK -
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-101.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-186+800-186+800
-186+000
-185+000
-184+000
-183+000
-182+000
-181+000
-180+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
MAGNETOMETER AND SIDE SCAN SONAR 1.
NOTES:
MAGNETOMETER AND SIDE SCAN SONAR PLAN - SABINE EXTENSION CHANNEL
SHEET 01 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -180+000
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
E L
SNWE 26
SNWE 27
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-102.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-180+000
-179+000
-178+000
-177+000
-176+000
-175+000
-174+000
-173+000
-172+000
-171+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 02 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -171+000
MATCHLINE STA. -180+000
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
SNWE 25
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-103.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-171+000
-170+000
-169+000
-168+000
-167+000
-166+000
-165+000
-164+000
-163+000
-162+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
DREDGE PLAN - SABINE EXTENSION CHANNEL
SHEET 03 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -162+400
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
E
MATCHLINE STA. -171+000
of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-104.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-163+000
-162+000
-161+000
-160+000
-159+000
-158+000
-157+000
-156+000
-155+000
-154+000
-153+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 04 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -153+400
MATCHLINE STA. -162+400
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-105.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-154+000
-153+000
-152+000
-151+000
-150+000
-149+000
-148+000
-147+000
-146+000
-145+000
-144+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 05 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -144+800
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
E
MATCHLINE STA. -153+400
of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-106.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-145+000
-144+000
-143+000
-142+000
-141+000
-140+000
-139+000
-138+000
-137+000
-136+000
-135+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 06 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -135+400
MATCHLINE STA. -144+800
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
SNWE 24
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-107.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-135+000
-134+000
-133+000
-132+000
-131+000
-130+000
-129+000
-128+000
-127+000
-126+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 07 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -126+000
MATCHLINE STA. -135+400
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
SNWE 18
SNWE 19
SNWE 20
SNWE 21
SNWE 22
SNWE 23
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-108.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-126+000
-125+000
-124+000
-123+000
-122+000
-121+000
-120+000
-119+000
-118+000
-117+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 08 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
09 10
MATCHLINE STA. -117+000
S A
B
IN
E E
X T
E N
S
IO
N C
H A
N N
E
MATCHLINE STA. -126+000
SNWE 14
SNWE 15
SNWE 16
SNWE 17
SNWE 18
SNWE 19
SNWE 20
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-109.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-117+000
-116+000
-115+000
-114+000
-113+000
-112+000
-111+000
-110+000
-109+000
-108+000
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
MAGNETOMETER AND SIDE SCAN SONAR PLAN - SABINE BANK CHANNEL
SHEET 09 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLINE STA. -108+000
S A
B
IN
E B
A N
K C
H A
N N
E
MATCHLINE STA. -117+000
SNWE 9
SNWE 10
SNWE 11
SNWE 12
SNWE 13
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-110.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-108+000
-107+000
-106+000
-105+000
-104+000
-103+000
-102+000
-101+0
-10 0+
-9 9+
-9
-9
6255 6256
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 10 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
M A T C
H L
IN
E S
T A -9
S A
B
IN
E B
A N
K C
H A
N N
E
MATCHLINE STA. -108+000
SNWE 7
SNWE 8
SNWE 9
SNWE 10
SNWE 11
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-111.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-9 9+
-9
-9
-9
-9
-9
-9
-9
-9
-9
-8
-8
-8
-8
-8
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 11 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
M A T C
H L
IN
E S
T A -8
S A B
IN
E B
A N
K C
H A N
N E L
M A T C
H L
IN
E S
T A -9
SNWE 6
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-112.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-8
-8
-8
-8
-8
-8
-8
-8
-7
-7
-7
-7
-7
-7
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 12 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
S T A -7
M A T C
H L
IN
E
S A B
IN
E B
A N
K C
H A N
N E L
M A T C
H L
IN
E S
T A -8
SNWE 5
SNWE 6
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-113.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-7
-7
-7
-7
-7
-7
-7
-7
-6
-6
-6
-6
-6
-6
-6
-6
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 13 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
M A T C
H L
IN
E S
T A -6
M A T C
H L
IN
E S
T A -7
S A B
IN
E B
A N
K C
H A N
N
SNWE 4
SNWE 5
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-114.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-6
-6
-6
-6
-6
-6
-6
-6
-5
-5
-5
-5
-5
-5
-5
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 14 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
14M A T C
H
LI
N E S
T A
S A B
IN
E B
A N
K C
H A N
N E L
M A T C
H L
IN
E S
T A -6
SNWE 1
SNWE 2
SNWE 3
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-115.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-5
-5
-5
-5
-5
-5
-4
-4
-4
-4
-4
-4
-4
-4
-4
-4 0+
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
MAGNETOMETER AND SIDE SCAN SONAR PLAN - SABINE PASS OUTER BAR CHANNEL
SHEET 15 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
-4 1+
M A T C
H
LI
N E S
T A
S A B
IN
E B
A N
K C
H A N
N E L
M A T C
H L
IN
E S
T A -5
OB 8
OB 9
OB 10
OB 11
OB 12
OB 13
OB 14
OB 15
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-116.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-4
-4 0+
-3 9+
-38 +0
-37 +0
-36 +0
-35 +0
-34 +0
-33 +0
-32 +0
-31 +0
-30 +0
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 16 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLIN
E
STA.
-3
1+
M A T C
H L
IN
E S
T A -4
S A
B
IN
E P
A S S O
U T E
R B
A R C
H A
N N
OB 1
OB 2
OB 3
OB 4
OB 5
OB 6
OB 7
OB 8
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-117.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-31 +0
-30 +0
-29 +0
-28 +0
-27 +0
-26 +0
-25 +0
-24 +0
-23 +0
-22 +0
-21+
5920 6032
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 17 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLIN
E S
TA.
-21
+40
MATCHLIN
E
STA.
-3
1+
S A
B
IN
E P
A S S O
U T E
R B
A R C
H A
N N
OB 1
OB 2
OB 3
OB 4
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
EAST JETTY
WEST JETTY
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-118.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-24 +0
-23 +0
-22 +0
-21+
-20+
-19+
-18+
-17+
-16+
-15+
-14+
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
MAGNETOMETER AND SIDE SCAN SONAR PLAN - SABINE PASS JETTY CHANNEL
SHEET 18 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
21 22
S A
B
IN
E P
A S S J
E T T
Y C
H A
N N
E L
MATCHLIN
E S
TA.
-21
+40
MATCHLIN
E S
TA. -
15+
WEST JETTY
EAST JETTY
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-119.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-16+
-15+
-14+
-13+
-12+
-11+
-10+
-9+0
-8+0
-7+0
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 19 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
MATCHLIN
E S
TA. -
8+0
S A
B
IN
E P
A S S J
E T T
Y C
H A
N N
E L
MATCHLIN
E S
TA. -
15+
SPC 58
SPC 59
SPC 60
SPC 61
SPC 62
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
EAST JETTY
WEST JETTY
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-120.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
-8+0
-7+0
-6+0
-5+
-4 +0
-3 +0
-2 +0
-1 +0
0+
1+
2+
3+
3+
0+
5563M
ATC
H
LI
N E
STA.
+5
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 20 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
S A B
IN
E P
A S S C
H A
N N E L
MATCHLIN
E S
TA. -
8+0
JE
T T Y C
H A
N N E L
S A B
IN
E P
A S S
SPC 38
SPC 39
SPC 40
SPC 41
SPC 42
SPC 43
SPC 44
SPC 45
SPC 46
SPC 47
SPC 48
SPC 49
SPC 50
SPC 51
SPC 52
SPC 53
SPC 54
SPC 55
SPC 56
SPC 57
SPC 58
SPC 59
SPC 60
SPC 61
SPC 62
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
EAST JETTY
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-121.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
4+
5+
6+
7+
8+
9+
+0
+0
-1 +0
0+
1+
2+
3+
3+
0+
M
ATC
H
LI
N E
STA.
+0
S A B
IN
E P
A S S C
H A
N N E L
M
ATC
H
LI
N E
STA.
+5
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
MAGNETOMETER AND SIDE SCAN SONAR PLAN - SABINE PASS CHANNEL
SHEET 21 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
SPC 13
SPC 14
SPC 15
SPC 16
SPC 17
SPC 18
SPC 19
SPC 20
SPC 21
SPC 22
SPC 23 SPC 24
SPC 25
SPC 26
SPC 27
SPC 28
SPC 30
SPC 31
SPC 32
SPC 33
SPC 34
SPC 35
SPC 36
SPC 37
SPC 38
SPC 39
SPC 40
SPC 41
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-122.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
9+
+0
+0
+0
+0
+0
+0
+0
+0
+0
+0
+0
+0
M
ATC
H
LI
N E
STA.
9+
S A B
IN
E P
A S S C
H A
N N E L
M
ATC
H
LI
N E
STA.
+0
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 22 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
SPC 1
SPC 2 SPC 3
SPC 4
SPC 5
SPC 6
SPC 7
SPC 8
SPC 9
SPC 10
SPC 11
SPC 12
SPC 13
SPC 14
SPC 15
SPC 16
SPC 17
SPC 18
SPC 19
PAC 46
PAC 47
PAC 48
PAC 49
PAC 50
PAC 51
PAC 52
PAC 53
PAC 54
PROPOSED CHANNEL TOE (BOTTOM OF CUT)
Galveston District of Engineers U.S. Army Corps
LEGEND:
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
SIDE SCAN SONAR POINT
MAGNETOMETER POINT
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-123.dgn
APRIL XX, 2021
10145465
OBSTRUCTION
POTENTIAL SUBMERGED
XX
+0
+0
+0
+0
+0
+0
48804882
HAZARD SURVEYS.
INCLUDING REQUIRED PRE- DREDGING
INVESTIGATE PIPELINE AND UTILITY CROSSINGS,
FOR CONTRACTOR'S REQUIREMENTS TO
SECTION 35 20 23.12 45 (HOPPER DREDGING)
BEEN IDENTIFIED. REFER TO SPECIFICATION
POTENTIAL DREDGING OBSTRUCTIONS HAVE
TO VERIFY THAT ALL EXISTING DEBRIS AND
HDR HAS NOT PERFORMED FIELD INVESTIGATIONS4.
ARE ON SHEETS 28 TO 31.
SONAR AND POTENTIAL SUBMERGED OBSTRUCTION DATA
COORDINATE TABLES FOR MAGNETOMETER, SIDE SCAN3
https://wrecks.nauticalcharts.noaa.gov/viewer/
AT THE FOLLOWING WEBSITE:
INFORMATION. REVIEW CURRENT AWOIS AND ENC DATA
CONDITIONS SURVERY INVESTIGATIONS) FOR ADDITIONAL
TO SPECIFICATION SECTION 02 00 10 (EXISTING
PART OF THE PRE-DREDGING HAZARD SURVEY, REFER
SHIPWRECKS, AND NAVIGATIONAL OBSTRUCTIONS AS
INFORMATION REGARDING NAVIGATIONAL CHARTS,
REVIEW NOAA'S AWOIS AND ENC DATABASES FOR2.
ON GEOSPATIAL SURVEYS.
SPECIFICATIONS FOR ADDITIONAL INFORMATION
DURING 2019. REFER TO APPENDIX B IN THE
(FOR BORROW GLOBAL) AND FUGRO USA LAND
DATA WERE COLLECTED BY DOC MAPPING
SHEET 23 OF 27
GEOPHYSICAL DATA
APPENDIX B
PART OF THE PREVIOUS CHANNEL DEEPENING WORK.
OFFSHORE OF STATION -182+000 WAS NOT DREDGED AS
THAT TIME.
DREDGING OBSRUCTIONS MAY HAVE CHANGED SINCE
CONDITIONS OF SURFACE DEBRIS AND POTENTIAL
PERFORMED IN 2022 THROUGH 2024. EXISTING
OBTAINED PRIOR TO CHANNEL DEEPENING WORK
THE INFORMATION CONTAINED IN THE APPENDIX WAS
NOTE:
M
ATC
H
LI
N E
STA.
9+ of Engineers U.S. Army Corps
CHANNEL IMPROVEMENTS PROJECT
SABINE-NECHES WATERWAY
1000'0 500'
...\6.2_WIP\ProjectData\CAD_BIM\06 Exhibits\01_Mag Exhibits\SN05OS1C-POINT_TABLE_1.dgn
APRIL XX, 2021
10145465
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13859716
13859723
13859589
13859552
13859493
13859398
13859437
13859471
13858562
13858434
13859697
13858839
13858652
13859734
13860247
13860512
13860457
13860478
13860443
13860098
13859814
13859948
13860002
13859948
13860086
13859978
13859827
13860017
13859894
13858835
13858999
13859070
13859140
13859401
13858926
13859232
13859320
13858174
13858259
13858397
13858488
13858873
13858926
13858985
13859060
13859202
13859252
13859426
13859518
13859758
13860155
13859865
13859654
13858370
13858572
13858458
13858766
13859559
13860028
13860091
EASTING
3585842
3585827
3586232
3586349
3586469
3586752
3586689
3586595
3589296
3589667
3585907
3588429
3588967
3585771
3583592
3583431
3583535
3583530
3583537
3584110
3585550
3585264
3584658
3584901
3584363
3584735
3585453
3584518
3583409
3586511
3586009
3585869
3585634
3584858
3586313
3585368
3585099
3588179
3587948
3587531
3587212
3586113
3585963
3585793
3585517
3585122
3584957
3584498
3584145
3583472
3583560
3584417
3585046
3589476
3588916
3589288
3588416
3585968
3584511
3584335
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13860112
13860128
13860400
13860236
13860406
13859977
13859920
13860002
13859722
13860072
13859415
13858948
13858841
13858410
13859346
13858855
13858882
13858793
13858322
13858779
13858742
13858626
13858558
13858396
13858375
13859114
13858545
13859546
13859498
13859185
13859299
13859264
13859494
13858472
13859111
13859034
13858912
13859298
13859191
13859230
13858638
13859409
13860051
13858635
13859588
13858208
13858277
13859806
13859048
13860212
13860095
13858130
13857987
13859104
13858363
13859097
13859542
13859044
13859224
13859269
EASTING
3584204
3584028
3583510
3583752
3583438
3584742
3584876
3584659
3585499
3584390
3587239
3588647
3588955
3590197
3587440
3588926
3588866
3589038
3590462
3589137
3589282
3589581
3589732
3590248
3590349
3588140
3589838
3586832
3586941
3587920
3587568
3587694
3586754
3589791
3587901
3588129
3588458
3587325
3587663
3587543
3589284
3586978
3583537
3587814
3584988
3589682
3589502
3584897
3587190
3583706
3584073
3589889
3590316
3587038
3589235
3586068
3584813
3586317
3585748
3585594
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13859490
13859601
13859975
13859796
13858085
13858219
13858376
13858478
13858515
13858534
13858557
13858638
13858661
13858686
13858775
13858826
13858857
13858885
13858977
13859057
13859099
13859141
13859280
13859467
13859486
13859604
13859511
13859333
13859155
13859078
13858816
13858764
13858714
13858647
13858585
13858524
13858480
13858325
13854785
13850788
13850685
13857134
13846992
13846331
13841395
13840937
13842789
13841896
13840474
13840262
13856174
13844770
13855042
13854868
13848984
13854418
13853653
13853062
13851263
13852003
EASTING
3584937
3584636
3583530
3584045
3587824
3587437
3586975
3586687
3586587
3586528
3586465
3586229
3586157
3586092
3585807
3585667
3585581
3585496
3585201
3584949
3584846
3584716
3584209
3583869
3583654
3583624
3583917
3584444
3584972
3585220
3585997
3586145
3586309
3586492
3586673
3586849
3587011
3587434
3592035
3595003
3595080
3590304
3597802
3598312
3601971
3602314
3600943
3601605
3602658
3602824
3591001
3599465
3591851
3591979
3596356
3592315
3592878
3593314
3594654
3594111
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13838799
13851838
13852758
13853234
13853761
13854195
13852312
13855475
13855600
13855831
13839736
13854423
13849424
13849183
13849121
13848970
13856615
13856041
13851755
13839364
13839493
13840980
13841360
13842739
13846555
13846938
13847042
13847429
13847701
13847815
13848037
13850059
13850227
13850484
13850810
13850772
13850905
13851060
13851131
13851386
13851447
13851206
13851344
13851512
13850520
13850576
13850778
13850962
13850687
13850335
13850475
13850530
13851226
13851300
13850415
13851150
13851063
13850168
13850540
13850632
EASTING
3603898
3593860
3593177
3592820
3592432
3592103
3593525
3591155
3591065
3590889
3602838
3591932
3595642
3595885
3596012
3596066
3590314
3590731
3593917
3603114
3603019
3601922
3601635
3600602
3597779
3597494
3597428
3597131
3596927
3596843
3596683
3595174
3595051
3594867
3596720
3596750
3596643
3596519
3596458
3596255
3596212
3596404
3596287
3596151
3596951
3596911
3596486
3596341
3596560
3596844
3596727
3596682
3596130
3596070
3596784
3596188
3596260
3596701
3596428
3596352
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13850703
13850878
13851130
13850979
13851073
13850865
13850780
13850674
13850555
13851376
13851305
13851131
13851039
13850948
13850531
13850579
13850651
13850740
13850331
13850389
13850840
13851041
13850932
13851125
13851313
13850473
13843493
13843303
13843410
13841611
13841176
13856277
13856099
13854710
13846624
13840384
13850106
13857233
13856874
13855354
13855087
13853647
13854059
13853790
13853898
13852676
13853123
13853260
13851775
13851038
13850866
13849264
13847986
13845006
13843973
13843854
13843705
13843560
13852303
13852751
EASTING
3596293
3596155
3595941
3596069
3595996
3596552
3596623
3596696
3596798
3596134
3596197
3596338
3596418
3596476
3596563
3596524
3596464
3596390
3596717
3596671
3596311
3596153
3596237
3596077
3595935
3596611
3600794
3600930
3600857
3602191
3602508
3591311
3591438
3592470
3598474
3603099
3595897
3590601
3590864
3591986
3592193
3593260
3592960
3593148
3593070
3593965
3593642
3593543
3594646
3595198
3595329
3596508
3597454
3599668
3600433
3600520
3600635
3600739
3594008
3593681
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13841189
13843871
13857215
13855214
13841538
13854574
13838961
13839415
13853204
13839787
13843202
13845968
13846638
13849150
13848354
13850179
13850581
13850915
13851493
13856812
13854610
13857080
13856452
13854869
13854474
13853777
13853004
13850736
13850579
13850328
13848975
13846898
13842730
13840902
13840200
13838747
13841373
13841870
13845068
13845537
13845813
13846154
13842916
13846606
13851244
13852017
13852689
13852910
13853018
13853798
13854163
13854086
13854010
13853978
13853746
13853497
13853275
13844973
13844806
13845183
EASTING
3602249
3600251
3590363
3591841
3601990
3592324
3603906
3603574
3593337
3603298
3600759
3598708
3598211
3596351
3596940
3595580
3595293
3595041
3594620
3590406
3592052
3590211
3590671
3591857
3592143
3592664
3593237
3594932
3595041
3595222
3596221
3597771
3600846
3602207
3602735
3603817
3601873
3601488
3599746
3599399
3599199
3598940
3601341
3598604
3595177
3594602
3594087
3593938
3593850
3593275
3593005
3593065
3593119
3593143
3593312
3593491
3593655
3599817
3599947
3599670
MAGNETOMETER POINT TABLE
POINT NO.
NORTHING
13844674
13844220
13844068
13844010
13843876
13843644
13843497
13842442
13841606
13840933
13840402
13840265
13850875
13849584
13849443
13848959
13848392
13853157
13856267
13857579
13853926
13857167
13856905
13856855
13856563
13856486
13856362
13856324
13856154
13856115
13856080
13855898
13855726
13855763
13855515
13855434
13855385
13854653
13838969
13856242
13856037
13855878
13843402
13852720
13853167
13853743
13854505
1385519…
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