1. Legend for Geotechnical Data
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      Aptim Environmental & Infrastructure, LLC
      6401 Congress Avenue, Suite 140
      Boca Raton, Florida 33487
      Phone # 1-561-391-8102
      Legend for Geotechnical Data
      Grain Size Scale for Sediments
      Proportional Definition of Descriptive Terms
      Descriptive Term
      Range of Proportions
      Sandy, gravelly, etc.
      35 % to 50 %
      Some
      20 % to 35 %
      Little
      10 % to 20 %
      Trace
      1 % to 10 %
      Consistency of Cohesive Soils
      Description
      Consistency
      Index
      Approximate
      Undrained Shear
      Strength (kPa)
      Field Identification
      Hard
      Over 300
      Indented with difficulty by thumbnail, brittle.
      Very Stiff
      >1
      150-300
      Readily indented by thumbnail, still very tough.
      Stiff
      0.75-1
      75-150
      Readily indented by thumb but penetrated only with difficulty. Cannot
      be moulded in the fingers.
      Firm
      0.5-0.75
      40-75
      Can be penetrated several centimeters by thumb with moderate effort
      and moulded in fingers by strong pressure.
      Soft
      < 0.5
      20-40
      Easily penetrated several centimeters by thumb, easily moulded.
      Very Soft
      Less than 20
      Easily penetrated several centimeters by fist, exudes between fingers
      when squeezed in fist.
      Source:
      Engineering Properties of Soils and Rocks, Fourth Edition by Fred G. Bell
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      USCS Classifications
      Refers to the Army Corps of Engineers Unified Soils Classification System. Class types
      are defined primarily by grain size, sorting and percent of material passing the #200 sieve.
      Classification of materials on the core logs based on visual field examinations are identified on
      the core logs under the Classification of Materials Description. Classifications based on
      laboratory sieve analyses are identified on the core logs in the Legend and under Remarks.
      Note:
      Information is after ACOE Atlantic Division Manual # 1110-1-1 titled
      Engineering and Design
      Geotechnical Manual for Surface and Subsurface Investigations
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      Silty FAT CLAY, very stiff, oxidation between 0.3' &
      0.7', greenish gray (10GY-5/1), (CH).
      FAT CLAY, hard, little silt, silt typically distributed
      throughout layer, silt decreases with depth in layer, silt
      pockets up to 0.25" between 4.4' & 4.6', greenish gray
      (5G-5/1), (CH).
      FAT CLAY, very stiff, trace sand, fine grained, quartz,
      trace silt, sand decreases with depth in layer, greenish
      gray (10Y-5/1), (CH).
      FAT CLAY, stiff to very stiff, little silt, trace sand, fine
      grained, quartz, trace wood fragments, silt distributed
      throughout layer and in laminae, 1.5" sand pocket @
      14.5', 1.0" pocket of wood fragments @ 15.3', dark
      gray (10YR-4/1), (CH).
      FAT CLAY, stiff, some organics, little silt, trace sand,
      fine grained, quartz, organics distributed in pockets up
      to 2.0", silt distributed in laminae, sand distributed in
      pockets up to 1.0", very dark gray (10YR-3/1), (CH).
      WOOD FRAGMENTS, little sand, fine grained, quartz,
      trace silt, wood fragments up to 1.5", black
      (10YR-2/1), (PT).
      No recovery.
      End of Boring
      -45.4
      -49.7
      -51.1
      -59.2
      -61.8
      -62.3
      -62.6
      2.2
      6.5
      7.9
      16.0
      18.6
      19.1
      19.4
      T1
      T2
      T3
      T4
      T5
      Sample #T1, Depth = 1.0'
      Ave. Field Vane (tsf): 0.28
      Sample #T2, Depth = 5.0'
      Ave. Field Vane (tsf): 0.41
      Sample #T3, Depth = 7.2'
      Ave. Field Vane (tsf): 0.26
      Sample #T4, Depth = 11.5'
      Ave. Field Vane (tsf): 0.15
      Sample #T5, Depth = 15.5'
      Ave. Field Vane (tsf): 0.26
      3. DRILLING AGENCY
      2. BORING DESIGNATION
      0
      0.0 Ft.
      LOCATION COORDINATES (ft)
      TX GLO Region 1 Recon Geotechnical Sand Search
      Jefferson, Chambers, Galveston and Brazoria Co.
      15. DATE BORING
      0.0
      19.1 Ft.
      SM
      10. COORDINATE SYSTEM/DATUM
      11. MANUFACTURER'S DESIGNATION OF DRILL
      DISTURBED
      UNDISTURBED (UD)
      18. SIGNATURE AND TITLE OF INSPECTOR
      14. ELEVATION GROUND WATER
      Texas State Plane South
      COMPLETED
      19.4 Ft.
      STARTED
      3.0 In.
      X = 3,471,620 Y = 13,736,334
      -43.2
      VERTICAL
      VERTICAL
      INCLINED
      0.0 Ft.
      8. TOTAL DEPTH OF BORING
      TXGLO1-VC-23-037
      AUTO HAMMER
      MANUAL HAMMER
      APTIM
      6. THICKNESS OF OVERBURDEN
      CONTRACTOR FILE NO.
      7. DEPTH DRILLED INTO ROCK
      10-09-23
      -43.2 Ft.
      DIVISION
      INSTALLATION
      16. ELEVATION TOP OF BORING
      17. TOTAL RECOVERY FOR BORING
      NAVD88
      5
      APTIM SEAS VC-700 Vibracore
      9. SIZE AND TYPE OF BIT
      12. TOTAL SAMPLES
      13. TOTAL NUMBER CORE BOXES
      DEG. FROM
      VERTICAL
      5. DIRECTION OF BORING
      BEARING
      4. NAME OF DRILLER
      HORIZONTAL
      APTIM
      DRILLING LOG
      NAD 1983
      1. PROJECT
      10-09-23
      %
      REC.
      Boring Designation
      REMARKS
      The USCS classification system defines silt as the
      percent passing the No.200 (0.075 mm) sieve
      SHEET 1
      BOX OR
      SAMPLE
      CLASSIFICATION OF MATERIALS
      Depths and elevations based on measured values
      ELEV.
      (ft)
      LEGEND
      DEPTH
      (ft)
      0
      5
      10
      15
      20
      25
      TXGLO1-VC-23-037
      JUN 04
      SAJ FORM 1836
      OF 1 SHEETS
      REGION1_RECON_GEOTECH.GPJ 3/25/24
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      O'
      5
      '
      10
      '
      1
      '
      6
      '
      11
      '
      2
      '
      7
      '
      12
      '
      3
      '
      8
      '
      13
      '
      4
      '
      9
      '
      14
      '
      5
      '
      15
      '
      15
      '
      16
      '
      17
      '
      18
      '
      20
      '
      Texas General
      Land Office
      Texas GLO
      Region 1
      Geotechnical
      Reconnaissance
      Survey
      TXG
      LOl-VC-23-037
      Date Collected: 10/9/23
      Top Elev. (ft NAVD88): -43.2
      Bottom Elev. (ft NAVD88): -62.3
      Core Length (ft): 19.1
      >
      APTIM
      6401 Congress Avenue, Suite 140
      Boca Raton, FL 33487
      www.aptim.com
      (561)391-8102
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      CORE ID
      SAMPLE DEPTH
      (ft)
      TORVANE
      (kg/cm²)
      TORVANE
      (tsf)
      TORVANE
      (kpa)
      DESCRIPTION
      1
      Mini Vane Shear Test Results
      2.7
      1.3
      0.13
      122.58
      Stiff
      5.3
      2.0
      0.20
      196.13
      Very Stiff
      11.4
      1.5
      0.15
      147.10
      Stiff
      14.0
      1.5
      0.15
      147.10
      Stiff
      TXGLO1-VC-23-030
      0.5
      4.8
      0.49
      465.82
      Hard
      3.4
      4.3
      0.44
      416.78
      Hard
      7.1
      6.0
      0.61
      588.40
      Hard
      11.9
      5.5
      0.56
      539.37
      Hard
      15.8
      3.5
      0.36
      343.23
      Hard
      2.5
      3.0
      0.31
      294.20
      Very Stiff
      6.0
      5.0
      0.51
      490.33
      Hard
      10.7
      2.5
      0.26
      245.17
      Very Stiff
      14.6
      6.5
      0.67
      637.43
      Hard
      16.0
      5.5
      0.56
      539.37
      Hard
      17.8
      8.0
      0.82
      784.53
      Hard
      0.6
      1.0
      0.10
      98.07
      Stiff
      1.2
      4.0
      0.41
      392.27
      Hard
      4.1
      6.0
      0.61
      588.40