W912HY21B0016_SPECS_Appendix B_Part 4 of 4 - Geophysical Surveys.pdf
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- Solicitation number
- W912HY21B0016
About this file
This document provides specifications for geophysical surveys related to a federal solicitation for dredging services along the Sabine-Neches Waterway in Texas. The solicitation seeks hopper dredging and channel deepening along existing channels from the Sabine Bank Channel to the Sabine Jetty Channel, including a 13-mile extension of the existing channel offshore. Bids are due by September 13, 2021, with award anticipated thereafter. The specifications outline requirements for various geophysical survey tasks including magnetometer and side scan sonar operations to identify obstructions in the project area prior to dredging. Survey data is to be provided to the U.S. Army Corps of Engineers Galveston District in specified formats for review and to inform dredging plans.
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File Number SN 101-302 Solicitation No: W912HY21B0016
DOCUMENT 00 31 32.13 45
APPENDIX B
(Part 4 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.
4. Geophysical Survey Maps Developed from Access 3D Solutions survey performed during March 2020.
- THIS PAGE WAS INTENTIONALLY LEFT BLANK -
3. Geophysical Survey Maps Developed by Burrow Global Based on
Surveys Performed During 2018.
PLAN VIEW DoC DATA
Pt. ID STA# Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
MS
DoC*
(ft)
1 00+00 3663926.14 13757030.36 -37.43 -40.93 3.50 3.50
2 00+94 3664014.73 13757061.22 -37.73 -38.84 1.11 1.11
3 05+42 3664434.89 13757218.28 -43.41 -45.99 2.58 2.58
4 07+33 3664613.73 13757284.68 -46.59 -51.10 4.51 4.51
5 08+24 3664699.23 13757316.60 -49.02 -51.91 2.89 2.89
6 09+38 3664805.34 13757356.75 -50.49 -53.84 3.35 3.35
7 10+46 3664907.18 13757394.16 -49.64 -52.09 2.45 2.45
8 12+52 3665100.57 13757463.24 -45.31 -49.99 4.68 4.68
9 16+73 3665494.74 13757612.44 -38.52 -42.45 3.93 3.93
10 17+74 3665589.36 13757646.97 -37.80 -41.38 3.58 3.58
11 18+86 3665693.64 13757686.85 -37.11 -40.19 3.08 3.08
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 7/09/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
SBC_USS_630_650
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION BEE1_X_HC (8")
PROFILE VIEW
Land Data
Underwater Data
4 5
9 10 11
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming Magnetometer Contour Data
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
1 00+00 3667016.60 13690199.34 -47.50 -50.59 3.09
2 03+07 3667321.27 13690239.04 -47.70 -50.93 3.23
3 04+20 3667433.49 13690247.71 -47.70 -50.11 2.41
4 05+15 3667526.17 13690269.66 -48.00 -50.44 2.44
5 05+97 3667607.45 13690279.29 -48.30 -50.92 2.62
6 08+07 3667815.13 13690311.41 -48.80 -51.53 2.73
7 09+04 3667911.32 13690325.63 -48.70 -51.29 2.59
8 10+17 3668022.62 13690340.17 -48.50 -51.19 2.69
9 11+05 3668110.89 13690351.05 -48.50 -50.94 2.44
10 12+10 3668215.35 13690360.10 -48.50 -50.91 2.41
11 13+11 3668314.94 13690372.22 -48.20 -50.54 2.34
12 14+15 3668417.81 13690387.02 -48.60 -51.83 3.23
13 15+12 3668515.05 13690392.93 -48.70 -51.47 2.77
14 16+04 3668606.96 13690403.17 -48.80 -51.21 2.41
15 17+14 3668716.28 13690414.25 -48.80 -51.31 2.51
16 18+13 3668814.75 13690424.51 -48.70 -51.39 2.69
17 19+05 3668905.48 13690439.23 -48.90 -51.67 2.77
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 7/11/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
EXT_USS_540_560
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION MG_X_HC (12")
PROFILE VIEW
Land Data
Underwater Data
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
MS
DoC*
(ft)
1 00+00 3666672.98 13699923.87 -47.90 -50.63 2.73 2.73
2 01+04 3666749.34 13699994.96 -48.40 -51.06 2.66 2.66
3 03+68 3666951.42 13700164.85 -47.90 -50.59 2.69 2.69
4 04+81 3667043.40 13700230.03 -48.20 -50.64 2.44 2.44
5 05+95 3667137.62 13700293.69 -48.40 -51.27 2.87 2.87
6 07+13 3667240.00 13700352.22 -48.50 -51.05 2.55 2.55
7 08+32 3667343.47 13700410.63 -48.60 -52.19 3.59 3.59
8 09+40 3667436.52 13700466.48 -48.10 -50.94 2.84 2.84
9 10+51 3667525.36 13700532.86 -48.10 -50.47 2.37 2.37
10 11+68 3667625.31 13700593.36 -48.10 -50.83 2.73 2.73
11 12+90 3667730.61 13700654.97 -48.80 -51.21 2.41 2.41
12 15+05 3667916.75 13700762.04 -48.20 -51.04 2.84 2.84
13 16+11 3668012.50 13700809.09 -48.40 -52.67 4.27 4.27
14 17+36 3668119.50 13700873.00 -48.60 -51.29 2.69 2.69
15 18+31 3668203.29 13700918.92 -48.20 -51.90 3.70 3.70
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 7/11/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
EXT_USS_440_460
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TM_12_NG (12")
PROFILE VIEW
Land Data
Underwater Data
1 2 3 4 5 6 7 8 9 10 11 12
14 15
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
1 00+00 3647519.58 13775617.04 -39.70 -43.89 4.19
2 00+99 3647607.62 13775662.51 -39.90 -44.05 4.15
3 02+27 3647721.82 13775720.82 -39.80 -43.74 3.94
4 04+30 3647901.75 13775814.26 -43.20 -46.94 3.74
5 06+33 3648030.98 13775970.61 -48.60 -52.50 3.90
6 07+18 3648084.16 13776037.54 -49.40 -53.05 3.65
7 08+34 3648158.92 13776126.33 -50.70 -54.74 4.04
8 09+39 3648222.46 13776208.99 -49.50 -54.13 4.63
9 11+18 3648335.23 13776348.03 -44.50 -47.25 2.75
10 13+35 3648463.80 13776522.66 -40.00 -44.50 4.50
11 15+36 3648581.53 13776686.36 -39.80 -44.84 5.04
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 6/30/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
SBC_USS_380_390
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TMS1_X_HC (10")
PROFILE VIEW
Land Data
Underwater Data
1 2 3
5 6 7 8
10 11
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
1 00+00 3663849.20 13758290.31 -36.81 -39.49 2.68
2 01+13 3663957.68 13758322.17 -37.53 -41.34 3.81
3 03+25 3664164.13 13758371.05 -38.68 -41.22 2.54
4 04+23 3664258.89 13758395.40 -39.50 -42.20 2.70
5 05+05 3664338.20 13758416.12 -41.54 -44.47 2.93
6 07+30 3664556.38 13758471.94 -46.46 -51.66 5.20
7 09+19 3664738.95 13758519.22 -50.75 -53.82 3.07
8 10+28 3664844.66 13758547.82 -50.46 -52.66 2.20
9 11+74 3664986.37 13758583.29 -47.80 -51.20 3.40
10 12+23 3665033.91 13758595.28 -46.42 -49.45 3.03
11 15+45 3665345.27 13758675.01 -37.80 -42.36 4.56
12 18+37 3665628.27 13758747.99 -36.81 -40.07 3.26
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 7/09/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
SBC_USS_630_650
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TNP1_16_C1 (16")
PROFILE VIEW
Land Data
Underwater Data
2 3 4
7 8
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
1 00+00 3623846.53 13796627.14 -40.40 -43.11 2.71
2 01+20 3623922.46 13796719.70 -40.40 -43.26 2.86
3 02+12 3623981.00 13796791.10 -41.10 -44.30 3.20
4 03+04 3624039.20 13796862.85 -41.60 -44.44 2.84
5 05+08 3624167.39 13797020.35 -45.60 -47.86 2.26
6 06+13 3624233.73 13797102.29 -48.50 -51.20 2.70
7 08+07 3624356.21 13797252.25 -51.00 -52.76 1.76
8 09+02 3624416.52 13797326.64 -48.80 -52.57 3.77
9 10+12 3624485.90 13797411.63 -46.60 -49.29 2.69
10 12+07 3624608.96 13797562.71 -41.10 -43.72 2.62
11 14+11 3624737.43 13797720.95 -39.50 -43.13 3.63
12 15+11 3624800.77 13797798.76 -39.30 -43.69 4.39
13 16+19 3624868.62 13797882.22 -39.00 -43.75 4.75
14 17+14 3624928.43 13797956.04 -39.80 -44.29 4.49
RTK corrections provided by DoC Mapping base station w/ POSPac post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
NAD83 - 4204 Texas South
Central
NAVD88 - GEOID12B (Conus)
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Offshore data has all been portrayed using elevations in reference to
NAVD88.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 6/29/2018
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.990
SBC_USS_60_75
JEFFERSON COUNTY
SABINE, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TNP2_X_C1 (30")
PROFILE VIEW
Land Data
Underwater Data
1 2 3 4
7 8
10 11 12 13 14
-60'
-50'
-40'
-30'
-20'
-10'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00
Elevation 0.00' NAVD88
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Confirming
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
MS
DoC*
(ft)
1 00+86 3601555.96 13840666.46 -22.91 -25.15 2.24 0.92
2 01+58 3601618.34 13840703.45 -30.45 -33.23 2.78 -0.01
3 02+67 3601711.89 13840758.91 -37.72 -45.46 7.74 3.75
4 03+04 3601743.65 13840777.74 -40.76 -47.58 6.82 1.73
5 03+51 3601783.99 13840801.65 -44.31 -50.33 6.02 1.40
6 04+48 3601867.89 13840851.39 -48.60 -56.16 7.56 1.61
7 05+25 3601934.07 13840890.62 -50.00 -57.36 7.36 1.45
8 06+03 3602001.18 13840930.35 -52.32 -58.58 6.26 1.95
9 06+54 3602044.66 13840956.09 -52.76 -59.37 6.61 0.96
10 07+09 3602091.94 13840984.08 -53.40 -59.78 6.38 1.38
11 07+73 3602147.70 13841016.99 -54.13 -60.26 6.13 1.13
12 08+26 3602192.60 13841043.51 -53.52 -60.64 7.12 2.12
13 08+68 3602229.23 13841065.13 -53.69 -60.95 7.26 2.06
14 09+05 3602261.25 13841084.03 -53.38 -61.22 7.84 3.03
15 09+72 3602318.81 13841116.98 -52.03 -60.28 8.25 2.43
16 10+43 3602380.68 13841152.38 -50.35 -55.67 5.32 0.82
17 10+62 3602397.43 13841161.97 -49.61 -54.42 4.81 0.81
18 11+40 3602465.36 13841200.85 -44.63 -49.36 4.73 0.73
19 11+74 3602494.57 13841217.38 -40.63 -46.62 5.99 1.49
PROFILE VIEW
Land Data
Underwater Data
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TPL3-24-C1 (24") DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
+VSDV - Positive aspect of vertical confidence level. Represents a 95% likelihood that the true position of the target lies deeper than this point.
MSDoC*- Minimum Statistical Depth of Cover.
This reflects the measured distance from the
+VSDV component to the Topo / Bathymetry line.
NAD83 - 4204 Texas South
Central
Mean Lower Low Water
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Data at this crossing location has been converted from NAVD88 to MLLW using a correction factor of -0.37' in accordance with VDatum.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 4/09/2018
ID: CP98
E: 3583561.972
N: 13861439.400
EL: 7.994
SPC_USS_30-45_TPL
JEFFERSON COUNTY
BEAUMONT, TX
RTK corrections provided by DoC Mapping base station w/ OPUS post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
10 15
-70'
-65'
-60'
-55'
-50'
-45'
-40'
-35'
-30'
-25'
-20'
-15'
-10'
-5'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00
0.00' Mean Lower Low Water
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
+VSDV
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
Minimum DoC within channel
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
MS
DoC*
(ft)
0 00+00 3601115.24 13841011.17 0.00 0.00 0.00 0.00
1 01+28 3601227.22 13841072.41 -20.68 -26.46 5.78 4.12
2 02+20 3601307.77 13841116.68 -29.44 -35.24 5.80 2.46
3 03+03 3601380.57 13841156.68 -33.71 -43.24 9.53 5.78
4 04+00 3601466.27 13841203.78 -40.09 -52.64 12.55 7.55
5 05+28 3601578.50 13841265.45 -47.57 -62.35 14.78 8.78
6 06+06 3601646.56 13841302.85 -51.17 -62.61 11.44 5.44
7 07+10 3601737.71 13841352.94 -52.31 -62.95 10.64 4.64
8 07+74 3601793.65 13841383.69 -52.64 -63.16 10.52 4.52
9 08+30 3601841.63 13841413.12 -54.73 -63.35 8.62 2.62
10 08+58 3601865.06 13841427.49 -54.91 -63.44 8.53 2.53
11 08+90 3601892.36 13841444.24 -54.73 -63.54 8.81 2.81
12 09+55 3601948.04 13841478.39 -53.77 -63.76 9.99 3.99
13 10+34 3602015.39 13841519.70 -51.61 -63.74 12.13 6.13
14 10+92 3602064.42 13841551.43 -50.57 -63.73 13.16 7.16
15 11+29 3602095.23 13841571.37 -50.12 -63.72 13.60 7.60
16 11+94 3602149.54 13841606.51 -47.06 -58.53 11.47 4.97
17 13+13 3602249.61 13841671.28 -32.88 -49.72 16.84 9.34
18 16+89 3602565.48 13841875.80 0.00 0.00 0.00 0.00
RTK corrections provided by DoC Mapping base station w/ OPUS post-processing.
PLAN / PROFILE
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
+VSDV - Positive aspect of vertical confidence level. Represents a 95% likelihood that the true position of the target lies deeper than this point.
MSDoC*- Minimum Statistical Depth of Cover.
This reflects the measured distance from the
+VSDV component to the Topo / Bathymetry line.
NAD83 - 4204 Texas South
Central
Mean Lower Low Water
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Data at this crossing location has been converted from NAVD88 to MLLW using a correction factor of -0.37' in accordance with VDatum.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 4/09/2018
ID: CP98
E: 3583561.972
N: 13861439.400
EL: 7.994
SPC_USS_30-45_TPL
JEFFERSON COUNTY
BEAUMONT, TX
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION TPL4-24-C1 (24")
PROFILE VIEW
Land Data
Underwater Data
5 10 15
-75'
-70'
-65'
-60'
-55'
-50'
-45'
-40'
-35'
-30'
-25'
-20'
-15'
-10'
-5'
0'
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 14+00 15+00 16+00
0.00' Mean Lower Low Water
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
+VSDV
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
Minimum DoC within channel
Easting
(ft)
Northing
(ft)
Topo
Elev.
(ft)
T.O.P.
Elev.
(ft)
DoC
(ft)
MS
DoC*
(ft)
46 27+84 3589388.84 13857128.79 -26.80 -36.51 9.71 3.29
47 28+32 3589427.87 13857157.43 -28.27 -36.96 8.69 3.78
48 28+60 3589450.18 13857173.81 -29.09 -37.22 8.13 1.37
49 29+01 3589483.29 13857198.12 -30.77 -37.90 7.13 -0.39
50 29+43 3589516.74 13857222.67 -32.63 -38.59 5.96 -0.49
51 29+68 3589536.95 13857237.50 -33.96 -39.00 5.04 -0.08
52 30+32 3589588.62 13857275.43 -36.74 -43.30 6.56 1.09
53 30+61 3589612.39 13857292.87 -37.64 -45.15 7.51 3.18
54 30+98 3589642.18 13857314.74 -39.09 -47.48 8.39 2.79
55 31+28 3589666.24 13857332.41 -40.57 -49.35 8.78 3.49
56 31+60 3589691.92 13857351.25 -41.51 -51.36 9.85 5.46
57 32+05 3589728.46 13857378.07 -43.89 -54.21 10.32 5.23
58 32+58 3589771.18 13857409.43 -47.29 -55.98 8.69 5.58
59 32+82 3589790.45 13857423.57 -48.51 -56.62 8.11 5.12
60 33+08 3589810.97 13857438.64 -49.90 -57.30 7.40 4.13
61 33+41 3589837.85 13857458.37 -51.03 -58.19 7.16 3.66
62 33+74 3589864.88 13857478.21 -52.41 -59.08 6.67 2.93
63 34+09 3589893.05 13857498.89 -54.14 -59.37 5.23 1.97
64 34+50 3589925.75 13857522.89 -55.97 -59.70 3.73 0.97
65 34+73 3589944.23 13857536.46 -57.54 -59.90 2.36 -0.35
66 35+05 3589970.05 13857555.41 -59.77 -59.79 0.02 -2.78
67 35+31 3589990.80 13857570.64 -60.10 -59.33 -0.77 -0.77
68 35+57 3590011.85 13857585.85 -59.88 -58.97 -0.91 -0.91
69 35+86 3590035.64 13857603.03 -59.76 -59.17 -0.59 -0.59
70 36+07 3590052.43 13857615.16 -59.62 -59.32 -0.30 -0.30
71 36+29 3590070.47 13857628.19 -59.90 -59.59 -0.31 -0.31
72 36+56 3590092.19 13857643.88 -58.49 -59.40 0.91 -2.47
73 36+70 3590104.06 13857652.45 -57.58 -58.84 1.26 -2.22
74 36+99 3590127.26 13857669.22 -53.18 -56.20 3.02 -0.58
75 37+23 3590146.79 13857683.32 -50.00 -52.62 2.62 -3.98
76 37+63 3590178.74 13857706.40 -44.62 -45.60 0.98 -4.84
77 38+01 3590209.62 13857728.71 -38.60 -38.77 0.17 -6.00
78 38+69 3590264.75 13857768.53 -27.24 -28.37 1.13 -4.83
PLEASE REFER TO THE "CONTROL POINT VERIFICATION SHEET" FOR MORE
DETAILS ON THE CONTROL POINT(S) AND DoC MAPPING'S OBSERVATIONS.
PREPARED FOR:
ID: CP98
E: 3583561.972
N: 13861439.401
EL: 7.634
SPC_USS_235-250_NGA
JEFFERSON COUNTY
SABINE PASS, TX
RTK corrections provided by DoC Mapping base station w/ OPUS post-processing.
PLAN / PROFILE (Channel Detail)
DoC - Depth of Cover
T.O.P. - Top of Pipe (or Cable, Conduit, etc.)
+VSDV - Positive aspect of vertical confidence level. Represents a 95% likelihood that the true position of the target lies deeper than this point.
MSDoC*- Minimum Statistical Depth of Cover.
This reflects the measured distance from the
+VSDV component to the Topo / Bathymetry line.
DEFINITIONS GEODETIC SETTINGS PLOT NOTES CONTROL POINT VERIFICATION NGA1-30-C1 (30")
NAD83 - 4204 Texas South
Central
Mean Lower Low Water
Units = Survey Foot
A multi-beam sonar was used to determine bathymetric elevations in the area surrounding this crossing site.
Data at this crossing location has been converted from NAVD88 to MLLW using a correction factor of -0.36' in accordance with VDatum.
CONTROL POINTS WERE ESTABLISHED AND/OR REFERENCED BY DoC MAPPING TO
ADJUST FOR HORIZONTAL AND VERTICAL VARIANCE DURING THE TIME OF THIS
SURVEY. INFORMATION FOR THE CONTROL POINTS BELOW:
DEPTH OF COVER STUDY
DATE(S): 4/05/2018
Italics = Projected topo or bathymetric points and DoC / MSDoC
LEGEND
PROFILE VIEW
Land Data
Underwater Data
Water Level
Topo / Bathymetry
Projected Topo / Bathymetry
+VSDV
T.O.P. Point
No Data (obstruction, loss of signal)
Overlaid Data (if applicable)
0.00
-2.63
-5.26
-7.89
-10.53
-13.16
-15.79
-18.42
-21.05
-23.68
-26.32
-28.95
-31.58
-34.21
-36.84
-39.47
-42.11
-44.74
-47.37
-50.00
65 70
-70'
-60'
-50'
-40'
-30'
-20'
-10'
0'
26+00 31+00 36+00 41+00
0.00' Mean Lower Low Water
Line Exposure
4. Geophysical Survey Maps Developed from Access 3D Solutions survey performed during March 2020.
-10 AND ABOVE
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30 AND BELOW
| PLATES |
| APPENDIX A: BORING LOGS |
| APPENDIX B: SUMMARY OF LAB TEST RESULTS |
| APPENDIX C: GRAIN SIZE DISTRIBUTION PLOTS |
| APPENDIX D: PLASTICITY CHARTS |
| APPENDIX E: CU TEST RESULTS |
| APPENDIX E: DIRECT SHEAR TEST RESULTS |
| APPENDIX G: HAZARD SURVEY METHODOLOGY REPORT |
| APPENDIX H: LABORATORY RAW DATA |
File details come from the government source that posted it. Updated .