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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      Clayey SILT, clay component is very stiff, clay
      increases with depth in layer, color is mottled
      grayish brown (2.5Y-5/2) and olive (5Y-5/3), (ML).
      Silty FAT CLAY, very stiff, oxidation throughout layer,
      partially lithified clay between 2.3' & 2.9', olive
      (5Y-5/3), (CH).
      FAT CLAY, very stiff, trace silt, olive gray (5Y-5/2),
      (CH).
      FAT CLAY, hard, trace organics, trace silt, trace wood
      fragments, (0.5" x 1.25") wood fragment @ 6.0', 2.0"
      organic pocket @ 6.1', greenish gray (10Y-5/1), (CH).
      Silty SAND, fine grained, quartz, little shell hash, trace
      clay, trace shell fragments, clay distributed in pockets
      typically up to 0.5", 2.0" pocket of bivalve fragments
      up to 1.5" @ 7.1', 1.0" clay pocket @ 9.0', gray
      (5Y-5/1), (SM).
      Sandy SILT, little shell hash, trace whole shell, sand
      component is fine grained quartz, whole bivalves
      typically up to 2.0" between 12.2' & 13.4', (1.25" x
      1.5") whole articulated bivalve @ 12.6', gray
      (2.5Y-5/1), (ML).
      Silty FAT CLAY, firm, little wood fragments, trace
      sand, fine grained, quartz, trace shell hash, trace
      whole shell, sand decreases with depth in layer, wood
      fragments are tree root fragments between 13.5' &
      14.1', (0.75" x 1.0") whole bivalve @ 13.5', dark gray
      (2.5Y-4/1), (CH).
      FAT CLAY, hard, trace shell hash, trace silt, silt
      distributed in laminae, shell hash distributed in
      pockets up to 1.5", greenish gray (10GY-5/1), (CH).
      Silty FAT CLAY, hard, trace shell hash, trace wood
      fragments, silt increases with depth in layer, (0.5" x
      0.75") wood fragment @ 15.9', 0.5" partially lithified
      clay pocket @ 16.3', possible bioturbation between
      17.6' & 17.8' and between 18.2' & 18.8', expansion
      from 19.4' to 19.5', Bit sample from 19.1' to 19.5', gray
      (5Y-5/1), (CH).
      End of Boring
      -27.7
      -30.3
      -31.7
      -33.0
      -37.0
      -39.3
      -40.5
      -41.5
      -45.4
      1.8
      4.4
      5.8
      7.1
      11.1
      13.4
      14.6
      15.6
      19.5
      T1
      T2
      T3
      T4
      T5
      T6
      Sample #T1, Depth = 0.7'
      Ave. Field Vane (tsf): 0.31
      Sample #T2, Depth = 2.4'
      Ave. Field Vane (tsf): 0.20
      Sample #T3, Depth = 5.2'
      Ave. Field Vane (tsf): 0.26
      Sample #T4, Depth = 6.5'
      Ave. Field Vane (tsf): 0.38
      Sample #T5, Depth = 14.9'
      Ave. Field Vane (tsf): 0.38
      Sample #T6, Depth = 16.5'
      Ave. Field Vane (tsf): 0.46
      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
      19.5 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 = 3,434,840 Y = 13,764,654
      -25.9
      VERTICAL
      VERTICAL
      INCLINED
      0.0 Ft.
      8. TOTAL DEPTH OF BORING
      TXGLO1-VC-23-027
      AUTO HAMMER
      MANUAL HAMMER
      APTIM
      6. THICKNESS OF OVERBURDEN
      CONTRACTOR FILE NO.
      7. DEPTH DRILLED INTO ROCK
      10-08-23
      -25.9 Ft.
      DIVISION
      INSTALLATION
      16. ELEVATION TOP OF BORING
      17. TOTAL RECOVERY FOR BORING
      NAVD88
      6
      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
      10-08-23
      %
      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-23-027
      JUN 04
      SAJ FORM 1836
      OF 1 SHEETS
      REGION1_RECON_GEOTECH.GPJ 3/25/24
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      Texas General
      Land Office
      Texas GLO
      Region 1
      Geotechnical
      Reconnaissance
      Survey
      TXGLOl-VC-23-027
      Date Collected: 10/8/23
      Top Elev. (ft NAVD88): -25.9
      Bottom Elev. (ft NAVD88): -45.4
      Core Length (ft): 19.5
      >
      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
      2.3
      2.5
      0.26
      245.17
      Very Stiff
      4.3
      3.5
      0.36
      343.23
      Hard
      7.0
      3.0
      0.31
      294.20
      Very Stiff
      10.2
      1.5
      0.15
      147.10
      Stiff
      2.1
      5.5
      0.56
      539.37
      Hard
      3.3
      5.0
      0.51
      490.33
      Hard
      4.5
      6.0
      0.61
      588.40
      Hard
      8.3
      9.0
      0.92
      882.60
      Hard
      12.9
      7.5
      0.77
      735.50
      Hard
      3.0
      2.0
      0.20
      196.13
      Very Stiff
      6.2
      3.0
      0.31
      294.20
      Very Stiff
      13.2
      5.5
      0.56
      539.37
      Hard
      TXGLO1-VC-23-020
      2.8
      0.5
      0.05
      49.03
      Firm
      2.8
      2.5
      0.26
      245.17
      Very Stiff
      13.0
      3.0
      0.31
      294.20
      Very Stiff
      16.8
      2.5
      0.26
      245.17
      Very Stiff
      2.8
      2.5
      0.26
      245.17
      Very Stiff
      9.5
      1.0
      0.10
      98.07
      Stiff
      2.0
      7.0