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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      FAT CLAY, hard, trace shell fragments, trace whole
      shell, partially lithified clay throughout layer, oxidation
      throughout layer, shell fragments are bivalve
      fragments up to 1.0", whole shells are whole bivalves
      up to 2.5", 3.0" pocket of whole bivalves and bivalve
      fragments @ top of layer, color is mottled olive
      (5Y-5/3) and greenish gray (5GY-5/1), (CH).
      FAT CLAY, hard, trace organics, trace silt, silt
      distributed in laminae between 1.2' & 1.6', organic
      lamina @ 1.4', 1.0" partially lithified clay pocket @
      2.0', color is mottled very dark greenish gray
      (10Y-3/1) and olive gray (5Y-5/2), (CH).
      FAT CLAY, hard, little silt, silt decreases with depth in
      layer, 3.0" partially lithified clay pocket @ 2.5', brown
      (10YR-5/3), (CH).
      FAT CLAY, hard, little silt, trace rock fragments, silt
      distributed in pockets up to 0.5" and laminae, (0.75" x
      1.5") rock fragment @ 4.7', brown (10YR-5/3), (CH).
      FAT CLAY, hard, trace silt, dark grayish brown
      (2.5Y-4/2), (CH).
      FAT CLAY, hard, trace silt, hardness increases with
      depth in layer, silt decreases with depth in layer, 3.0"
      partially lithified clay pocket @ 9.9', 2.0" oxidized
      pocket @ 10.5', dark grayish brown (2.5Y-4/2), (CH).
      FAT CLAY, very stiff, trace silt, silt typically distributed
      in laminae, 0.5" partially lithified clay pocket @ 12.5',
      0.75" silt pockets @ 13.1' and 13.3', gray (2.5Y-5/1),
      (CH).
      FAT CLAY, stiff to very stiff, trace organics, trace silt,
      silt distributed in laminae, organics distributed in
      laminae between 13.9' & 14.3', 0.5" partially lithified
      clay pocket @ 17.5', expansion from 19.1' to 19.3', Bit
      sample from 18.8' to 19.3', dark gray (5Y-4/1), (CH).
      End of Boring
      -38.5
      -40.0
      -41.6
      -44.5
      -45.8
      -49.5
      -51.4
      -56.8
      1.0
      2.5
      4.1
      7.0
      8.3
      12.0
      13.9
      19.3
      T1
      T2
      T3
      T4
      T5
      T6
      T7
      T8
      T9
      Sample #T1, Depth = 0.6'
      Ave. Field Vane (tsf): 0.36
      Sample #T2, Depth = 1.7'
      Ave. Field Vane (tsf): 0.36
      Sample #T3, Depth = 3.3'
      Ave. Field Vane (tsf): 0.41
      Sample #T4, Depth = 5.5'
      Ave. Field Vane (tsf): 0.36
      Sample #T5, Depth = 7.7'
      Ave. Field Vane (tsf): 0.46
      Sample #T6, Depth = 10.3'
      Ave. Field Vane (tsf): 0.51
      Sample #T7, Depth = 13.0'
      Ave. Field Vane (tsf): 0.28
      Sample #T8, Depth = 15.0'
      Ave. Field Vane (tsf): 0.15
      Sample #T9, Depth = 17.0'
      Ave. Field Vane (tsf): 0.18
      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
      19.3 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
      19.1 Ft.
      STARTED
      3.0 In.
      X = 3,447,220 Y = 13,749,162
      -37.5
      VERTICAL
      VERTICAL
      INCLINED
      0.0 Ft.
      8. TOTAL DEPTH OF BORING
      TXGLO1-VC-23-042
      AUTO HAMMER
      MANUAL HAMMER
      APTIM
      6. THICKNESS OF OVERBURDEN
      CONTRACTOR FILE NO.
      7. DEPTH DRILLED INTO ROCK
      10-09-23
      -37.5 Ft.
      DIVISION
      INSTALLATION
      16. ELEVATION TOP OF BORING
      17. TOTAL RECOVERY FOR BORING
      NAVD88
      9
      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-23-042
      JUN 04
      SAJ FORM 1836
      OF 1 SHEETS
      REGION1_RECON_GEOTECH.GPJ 3/25/24
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      10
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      11
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      2
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      7
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      12
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      3
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      8
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      13
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      I,
      4'
      1
      9'
      I
      ,
      14'
      1
      ·
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      5'
      15
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      ◄
      !1
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      19'
      20
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      Texas General
      Land Office
      Texas GLO
      Region 1
      Geotechnical
      Reconnaissance
      Survey
      TXG LOl-VC-23-042
      Date Collected: 10/9/23
      Top Elev.(ft NAVD88): - 37.5
      Bottom Elev.(ft NAVD88): -56.8
      Core Length (ft): 19.3
      >
      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
      3.0
      7.5
      0.77
      735.50
      Hard
      9.3
      6.0
      0.61
      588.40
      Hard
      15.8
      4.0
      0.41
      392.27
      Hard
      1.7
      3.5
      0.36
      343.23
      Hard
      5.0
      3.0
      0.31
      294.20
      Very Stiff
      12.2
      2.0
      0.20
      196.13
      Very Stiff
      16.0
      4.5
      0.46
      441.30
      Hard
      TXGLO1-VC-23-040
      1.5
      2.0
      0.20
      196.13
      Very Stiff
      17.5
      8.0
      0.82
      784.53
      Hard
      0.6
      3.5
      0.36
      343.23
      Hard
      1.7
      3.5
      0.36
      343.23
      Hard
      3.3
      4.0
      0.41
      392.27
      Hard
      5.5
      3.5
      0.36
      343.23
      Hard
      7.7
      4.5
      0.46
      441.30
      Hard
      10.3
      5.0
      0.51
      490.33
      Hard
      13.0
      2.8
      0.28
      269.68
      Very Stiff
      15.0
      1.5
      0.15
      147.10