CITY OF VALDEZ Project Title: East Pioneer Reconstruction Project No.: 13-3-1.32 Contract No.: 11 TO: All Recipients Date: April 14, 214 SUBJECT: Addendum No.1 This seventeen (17) page Addendum forms a part of the project scope documents and modifies the project scope for the above-referenced project. Acknowledge receipt of this Addendum in the space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification. This Addendum makes the following changes and/or clarifications: Attached to this addendum are the soil boring logs that are listed in the contract s index page.
Alaska Canada Anchorage Valdez Approximate Location of Project Base map taken from USGS Map Valdez C-5 SW Quadrangle Not to Scale VICINITY MAP October 213 Geotechnical & Environmental Consultants 32-1-234 FIG. 1
213_BORING_CLASS1 234 GINT.GPJ SWNEW.GDT 1/3/13 Shannon & Wilson, Inc. (S&W), uses a soil identification system modified from the Unified Soil Classification System (USCS). Elements of the USCS and other definitions are provided on this and the following pages. Soil descriptions are based on visual-manual procedures (ASTM D2488) and laboratory testing procedures (ASTM D2487), if performed. S&W INORGANIC SOIL CONSTITUENT DEFINITIONS CONSTITUENT 2 COARSE-GRAINED FINE-GRAINED SOILS SOILS (% or more fines) 1 (less than % fines) 1 Silt, Lean Clay, Major Elastic Silt, or Sand or Gravel 4 Fat Clay 3 Modifying (Secondary) Precedes major constituent Minor Follows major constituent Dry Moist Wet Hammer: Sampler: N-Value: 3% or more coarse-grained: Sandy or Gravelly 4 15% to 3% coarse-grained: with Sand or with Gravel 4 3% or more total coarse-grained and lesser coarsegrained constituent is 15% or more: with Sand or with Gravel 5 1 All percentages are by weight of total specimen passing a 3-inch sieve. 2 The order of terms is: Modifying Major with Minor. 3 Determined based on behavior. 4 Determined based on which constituent comprises a larger percentage. 5 Whichever is the lesser constituent. MOISTURE CONTENT TERMS Absence of moisture, dusty, dry to the touch Damp but no visible water Visible free water, from below water table More than 12% fine-grained: Silty or Clayey 3 STANDARD PENETRATION TEST (SPT) SPECIFICATIONS 14 pounds with a 3-inch free fall. Rope on 6- to 1-inch-diam. cathead 2-1/4 rope turns, > rpm NOTE: If automatic hammers are used, blow counts shown on boring logs should be adjusted to account for efficiency of hammer. 1 to 3 inches long Shoe I.D. = 1.3 inches Barrel I.D. = 1.5 inches Barrel O.D. = 2 inches 5% to 12% fine-grained: with Silt or with Clay 3 15% or more of a second coarsegrained constituent: with Sand or with Gravel 5 Sum blow counts for second and third 6-inch increments. Refusal: blows for 6 inches or less; 1 blows for inches. NOTE: Penetration resistances (N-values) shown on boring logs are as recorded in the field and have not been corrected for hammer efficiency, overburden, or other factors. DESCRIPTION FINES SAND Fine Medium Coarse GRAVEL Fine Coarse COBBLES BOULDERS N, SPT, BLOWS/FT. < 4 4-1 1-3 3 - > PARTICLE SIZE DEFINITIONS RELATIVE DENSITY / CONSISTENCY RELATIVE DENSITY Very loose Loose Medium dense Dense Very dense Bentonite Cement Grout Bentonite Grout Bentonite Chips Silica Sand SIEVE NUMBER AND/OR APPROXIMATE SIZE < #2 (. mm =.3 in.) #2 to #4 (. to.4 mm;.3 to.2 in.) #4 to #1 (.4 to 2 mm;.2 to.8 in.) #1 to #4 (2 to 4. mm;.8 to.187 in.) #4 to 3/4 in. (4. to 19 mm;.187 to. in.) 3/4 to 3 in. (19 to 76 mm) 3 to 12 in. (76 to 35 mm) > 12 in. (35 mm) COHESIONLESS SOILS Perforated or Screened Casing Trace Few Little Some Mostly < 2 2-4 4-8 8-15 15-3 > 3 October 213 32-1-234 COHESIVE SOILS N, SPT, RELATIVE BLOWS/FT. CONSISTENCY WELL AND BACKFILL SYMBOLS < 5% 5 to 1% 15 to % 3 to 45% to % Very soft Soft Medium stiff Stiff Very stiff Hard Surface Cement Seal Asphalt or Cap Slough PERCENTAGES TERMS 1, 2 Inclinometer or Non-perforated Casing Vibrating Wire Piezometer 1 Gravel, sand, and fines estimated by mass. Other constituents, such as organics, cobbles, and boulders, estimated by volume. 2 Reprinted, with permission, from ASTM D2488-9a Standard Practice for Description and Identification of Soils (Visual-Manual Procedure), copyright ASTM International, Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be obtained from ASTM International, www.astm.org. SOIL DESCRIPTION AND LOG KEY FIG. 3 Sheet 1 of 3
UNIFIED SOIL CLASSIFICATION SYSTEM (USCS) (Modified From USACE Tech Memo 3-357, ASTM D2487, and ASTM D2488) MAJOR DIVISIONS GROUP/GRAPHIC SYMBOL TYPICAL IDENTIFICATIONS COARSE- GRAINED SOILS (more than % retained on No. 2 sieve) Gravels (more than % of coarse fraction retained on No. 4 sieve) Sands (% or more of coarse fraction passes the No. 4 sieve) Gravel (less than 5% fines) Silty or Clayey Gravel (more than 12% fines) Sand (less than 5% fines) Silty or Clayey Sand (more than 12% fines) GW GP GM GC SW SP SM SC Well-Graded Gravel; Well-Graded Gravel with Sand Poorly Graded Gravel; Poorly Graded Gravel with Sand Silty Gravel; Silty Gravel with Sand Clayey Gravel; Clayey Gravel with Sand Well-Graded Sand; Well-Graded Sand with Gravel Poorly Graded Sand; Poorly Graded Sand with Gravel Silty Sand; Silty Sand with Gravel Clayey Sand; Clayey Sand with Gravel FINE-GRAINED SOILS (% or more passes the No. 2 sieve) Silts and Clays (liquid limit less than ) Silts and Clays (liquid limit or more) Inorganic Organic Inorganic Organic ML CL OL MH CH OH Silt; Silt with Sand or Gravel; Sandy or Gravelly Silt Lean Clay; Lean Clay with Sand or Gravel; Sandy or Gravelly Lean Clay Organic Silt or Clay; Organic Silt or Clay with Sand or Gravel; Sandy or Gravelly Organic Silt or Clay Elastic Silt; Elastic Silt with Sand or Gravel; Sandy or Gravelly Elastic Silt Fat Clay; Fat Clay with Sand or Gravel; Sandy or Gravelly Fat Clay Organic Silt or Clay; Organic Silt or Clay with Sand or Gravel; Sandy or Gravelly Organic Silt or Clay HIGHLY- ORGANIC SOILS Primarily organic matter, dark in color, and organic odor PT Peat or other highly organic soils (see ASTM D4427) NOTE: No. 4 size = 4. mm =.187 in.; No. 2 size =. mm =.3 in. 213_BORING_CLASS2 234 GINT.GPJ SWNEW.GDT 1/3/13 NOTES 1. Dual symbols (symbols separated by a hyphen, i.e., SP-SM, Sand with Silt) are used for soils with between 5% and 12% fines or when the liquid limit and plasticity index values plot in the CL-ML area of the plasticity chart. Graphics shown on the logs for these soil types are a combination of the two graphic symbols (e.g., SP and SM). 2. Borderline symbols (symbols separated by a slash, i.e., CL/ML, Lean Clay to Silt; SP-SM/SM, Sand with Silt to Silty Sand) indicate that the soil properties are close to the defining boundary between two groups. SOIL DESCRIPTION AND LOG KEY October 213 32-1-234 FIG. 3 Sheet 2 of 3
213_BORING_CLASS3 234 GINT.GPJ SWNEW.GDT 1/3/13 Poorly Graded Well-Graded Weak Moderate Strong DESCRIPTION Nonplastic Low Medium High Mottled Bioturbated Diamict Cuttings Slough Sheared Angular Subangular Subrounded Rounded Flat Elongated GRADATION TERMS Narrow range of grain sizes present or, within the range of grain sizes present, one or more sizes are missing (Gap Graded). Meets criteria in ASTM D2487, if tested. Full range and even distribution of grain sizes present. Meets criteria in ASTM D2487, if tested. CEMENTATION TERMS 1 Crumbles or breaks with handling or slight finger pressure Crumbles or breaks with considerable finger pressure Will not crumble or break with finger pressure PLASTICITY 2 VISUAL-MANUAL CRITERIA A 1/8-in. thread cannot be rolled at any water content. A thread can barely be rolled and a lump cannot be formed when drier than the plastic limit. A thread is easy to roll and not much time is required to reach the plastic limit. The thread cannot be rerolled after reaching the plastic limit. A lump crumbles when drier than the plastic limit. It take considerable time rolling and kneading to reach the plastic limit. A thread can be rerolled several times after reaching the plastic limit. A lump can be formed without crumbling when drier than the plastic limit. ADDITIONAL TERMS Irregular patches of different colors. Soil disturbance or mixing by plants or animals. Nonsorted sediment; sand and gravel in silt and/or clay matrix. Material brought to surface by drilling. Material that caved from sides of borehole. Disturbed texture, mix of strengths. PARTICLE ANGULARITY AND SHAPE TERMS 1 Sharp edges and unpolished planar surfaces. Similar to angular, but with rounded edges. Nearly planar sides with well-rounded edges. Smoothly curved sides with no edges. Width/thickness ratio > 3. Length/width ratio > 3. APPROX. PLASITICTY INDEX RANGE < 4 4 to 1 1 to 2 > 2 Interbedded Laminated Fissured Slickensided Blocky Lensed Homogeneous 1 Reprinted, with permission, from ASTM D2488-9a Standard Practice for Description and Identification of Soils (Visual-Manual Procedure), copyright ASTM International, Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be obtained from ASTM International, www.astm.org. 2 Adapted, with permission, from ASTM D2488-9a Standard Practice for Description and Identification of Soils (Visual-Manual Procedure), copyright ASTM International, Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be obtained from ASTM International, www.astm.org. ATD Diam. Elev. ft. FeO gal. Horiz. HSA I.D. in. lbs. MgO mm MnO NA NP O.D. OW pcf PID PMT ppm psi PVC rpm SPT USCS q u VWP Vert. WOH WOR Wt. ACRONYMS AND ABBREVIATIONS At Time of Drilling Diameter Elevation Feet Iron Oxide Gallons Horizontal Hollow Stem Auger Inside Diameter Inches Pounds Magnesium Oxide Millimeter Manganese Oxide Not Applicable or Not Available Nonplastic Outside Diameter Observation Well Pounds per Cubic Foot Photo-Ionization Detector Pressuremeter Test Parts per Million Pounds per Square Inch Polyvinyl Chloride Rotations per Minute Standard Penetration Test Unified Soil Classification System Unconfined Compressive Strength Vibrating Wire Piezometer Vertical Weight of Hammer Weight of Rods Weight STRUCTURE TERMS 1 Alternating layers of varying material or color with layers at least 1/4-inch thick; singular: bed. Alternating layers of varying material or color with layers less than 1/4-inch thick; singular: lamination. Breaks along definite planes or fractures with little resistance. Fracture planes appear polished or glossy; sometimes striated. Cohesive soil that can be broken down into small angular lumps that resist further breakdown. Inclusion of small pockets of different soils, such as small lenses of sand scattered through a mass of clay. Same color and appearance throughout. SOIL DESCRIPTION AND LOG KEY October 213 32-1-234 FIG. 3 Sheet 3 of 3
FROST CLASSIFICATION (after Municipality of Anchorage 29 Rev. 3) GROUP.2 Mil. P-2* USC SYSTEM (based on P-2 results) NFS Sandy Soils to 3 to 6 SW, SP, SW-SM, SP-SM Gravelly Soils to 3 to 6 GW, GP, GW-GM, GP-GM F1 Gravelly Soils 3 to 1 6 to 13 GM, GW-GM, GP-GM F2 Sandy Soils Gravelly Soils 3 to 15 1 to 2 6 to 19 13 to SP-SM, SW-SM, SM GM Sands, except very fine silty sands** Over 15 Over 19 SM, SC F3 Gravelly Soils Over 2 Over GM, GC Clays, PI>12 CL, CH All Silts ML, MH Very fine silty sands** Over 15 Over 19 SM, SC F4 Clays, PI<12 CL, CL-ML Varved clays and other fined grained, banded sediments CL and ML CL, ML, and SM; SL, SH, and ML; CL, CH, ML, and SM P-2 = Percent passing the number 2 sieve.2 Mil. = Percent material below.2 millimeter grain size *Approximate P-2 value equivalent for frost classification. Value range based on typical, well-graded soil curves. ** Very fine sand : greater than % of sand fraction passing the number sieve FROST CLASSIFICATION LEGEND October 213 Geotechnical & Environmental Consultants 32-1-234 FIG. 4
1.5 inches Asphalt MATERIAL DESCRIPTION Approx. Elevation: 17.1 Ft. S1: 56% Gravel, 33% Sand, 1% Fines (F1 -.2mm) Medium dense, gray, Poorly-Graded Gravel with Silt and Sand (GP-GM); moist S2: Penetration resistance likely not representative due to oversized gravels Medium dense to dense, gray, Well-Graded Sand with Silt and Gravel (SW-SM); moist to wet Symbol Samples.1 S1 S2 3.5 Ground Water 5 Penetration Resistance (14 lb. weight, 3" drop) Blows per foot Sampler refusal blows for 4 inches S3 S4: 41% Gravel, 51% Sand, 8% Fines (F2 - P2) S4 8/14/13 1 S5 Medium dense, gray, Silty Sand (SM); wet 15. S6 15 2 S7 Bottom of Boring Boring Completed 8/14/13 21.5 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES Blank Section, Cuttings Backfill Blank Casing, Annular Seal Slotted Casing, Filter Sand Grouted Bottom Seal 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-1 32-1-234 FIG. 5
4 inches Asphalt MATERIAL DESCRIPTION Approx. Elevation: 14.7 Ft. S1: 62% Gravel, 31% Sand, 7% Fines (F1 - P2) Medium dense, gray, Poorly-Graded Gravel with Silt and Sand (GP-GM); moist Medium dense to dense, dark gray, Well-Graded Gravel with Silt and Sand (GW-GM); moist Symbol Samples.3 S1 2.5 S2 Ground Water Penetration Resistance (14 lb. weight, 3" drop) Blows per foot 5 S3 8/14/13 S4 1 S5: % Gravel, 38% Sand, 12% Fines (F1 - P2) S5 15 S6 2 S7 Bottom of Boring Boring Completed 8/14/13 21.5 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-2 32-1-234 FIG. 6
4 inches Asphalt MATERIAL DESCRIPTION Approx. Elevation: 13.9 Ft. S1: 77% Gravel, 18% Sand, 4% Fines (NFS -.2mm) Medium dense, dark gray, Poorly-Graded Gravel with Sand (GP); moist S2: Penetration resistance likely not representative due to oversized gravels Dense, dark gray, Poorly-Graded Gravel with Silt and Sand (GP-GM); moist to wet; trace cobbles Symbol Samples.3 S1 1.5 S2 Ground Water Penetration Resistance (14 lb. weight, 3" drop) Blows per foot 5 S3 8/14/13 S4: Penetration resistance likely not representative due to oversized gravels S4 * Sampler refusal blows for 6 inches Medium dense, gray brown, Silty Sand (SM); wet 1. S5 1 15 S6: 9% Gravel, 59% Sand, 32% Fines (F3 - P2) S6 2 S7 Bottom of Boring Boring Completed 8/14/13 21.5 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES Blank Section, Cuttings Backfill Blank Casing, Annular Seal Slotted Casing, Filter Sand Grouted Bottom Seal 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-3 32-1-234 FIG. 7
3 inches Asphalt MATERIAL DESCRIPTION Approx. Elevation: 13.2 Ft. S1: 61% Gravel, 35% Sand, 4% Fines (NFS - P2) Medium dense, dark gray, Well-Graded Gravel with Sand (GW); moist S2: Penetration resistance likely not representative due to oversized gravels Medium dense to dense, dark gray, Well-Graded Sand with Silt and Gravel (SP-SM); moist Symbol Samples.3 S1 1.5 S2 Ground Water Penetration Resistance (14 lb. weight, 3" drop) Blows per foot S3: 44% Gravel, 47% Sand, 8% Fines (F2 - P2) Medium dense, dark gray, Well-Graded Sand with Silt and Gravel (SW-SM); moist to wet 5.5 S3 8/14/13 5 S4 1 S5 15 S6 Medium dense, dark gray brown, Silty Sand (SM); wet; trace organics Bottom of Boring Boring Completed 8/14/13 2.5 21.5 S7 2 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-4 32-1-234 FIG. 8
MATERIAL DESCRIPTION Approx. Elevation: 13. Ft. Loose, gray brown, Well-Graded Gravel with Silt and Sand (GW-GM); moist; few organics S1: 52% Gravel, 4% Sand, 8% Fines (F1 - P2) Symbol S1 Samples Ground Water Penetration Resistance (14 lb. weight, 3" drop) Blows per foot Medium stiff, gray brown, Sandy Organic Soil (OL); moist to wet S2: 2% Gravel, 4% Sand, 57% Fines (F4 - P2) 2. S2 8/14/13 5 Medium dense, gray, Silty Sand with Gravel (SM); wet 6. S3 S4 Medium dense, gray, Poorly-Graded Sand with Gravel (SP); wet 1. S5 1 Medium dense, gray, Poorly-Graded Sand (SP); wet 15. S6 15 2 S7 Bottom of Boring Boring Completed 8/14/13 21.5 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES Blank Section, Cuttings Backfill Blank Casing, Annular Seal Slotted Casing, Filter Sand Grouted Bottom Seal 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-5 32-1-234 FIG. 9
Approx. Elevation: 2 inches Asphalt MATERIAL DESCRIPTION S1: 57% Gravel, 36% Sand, 7% Fines (F1 - P2) Medium dense, dark gray, Well-Graded Gravel with Silt and Sand (GW-GM); moist.2 Symbol S1 Samples Ground Water Penetration Resistance (14 lb. weight, 3" drop) Blows per foot S2 5 S3 S4: 47% Gravel, 44% Sand, 8% Fines (F1 - P2) S4 Loose, gray brown, Silty Sand (SM); wet; few organics 1. S5 8/15/13 1 Medium dense, dark gray, Silty Sand with Gravel (SM); wet 15. S6 15 2 S7 Bottom of Boring Boring Completed 8/15/13 21.5 GEOTECHNICAL LOG 234 GINT.GPJ S&W_GEO1.GDT 1/3/13 * Sample Not Recovered 2" O.D. Split Spoon Sample Grab Sample LEGEND NOTES Blank Section, Cuttings Backfill Blank Casing, Annular Seal Slotted Casing, Filter Sand Grouted Bottom Seal 1. The stratification lines represent the approximate boundaries between soil types, and the transition may be gradual. 2. The discussion in the text of this report is necessary for a proper understanding of the nature of subsurface materials. 3. Water level, if indicated above, is for the date specified and may vary. Ground Water Level At Time Of Drilling Plastic Limit Liquid Limit Natural Water Content October 213 LOG OF BORING B-6 32-1-234 FIG. 1
U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 12 6 4 3 2 1 1/2 1 3/4 1/2 3/8 1/4 #4 #1 #2 #4 #6 # #2 HYDROMETER 9 8 7 PERCENT FINER BY WEIGHT 6 4 3 2 Sheet 1 of 4 FIG. 11 October 213 32-1-234 GRAIN SIZE CLASSIFICATION 1 1, Sample COBBLES B-1 S1 B-1 S4 B-2 S1 Sample B-1 S1 B-1 S4 B-2 S1 Depth, Ft. - 2. 7.5-9.. - 1.5 Depth, Ft. - 2. 7.5-9.. - 1.5 coarse GRAVEL 1 fine coarse 1 GRAIN SIZE IN MILLIMETERS SAND medium fine Classification Poorly-Graded Gravel with Silt and Sand (GP-GM) Well-Graded Sand with Silt and Gravel (SW-SM) Poorly-Graded Gravel with Silt and Sand (GP-GM) D D6 D3 D1 %Gravel 37.5 37.5 8.32 4.88 9.22 2.14 1 2.94.7.12.2 56 41 62.1 LL %Sand 33 51 31.1 SILT OR CLAY PL %Silt PI.1 Cc Cu 7.7 116.4 1.7 4.4 4.7 46.5 %Clay 1 8 7
U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 12 6 4 3 2 1 1/2 1 3/4 1/2 3/8 1/4 #4 #1 #2 #4 #6 # #2 HYDROMETER 9 8 7 PERCENT FINER BY WEIGHT 6 4 3 2 Sheet 2 of 4 FIG. 11 October 213 32-1-234 GRAIN SIZE CLASSIFICATION 1 1, Sample COBBLES B-2 S5 B-3 S1 B-3 S6 Sample B-2 S5 B-3 S1 B-3 S6 Depth, Ft 1. - 11.5. - 2. 15. - 16.5 Depth, Ft 1. - 11.5. - 2. 15. - 16.5 coarse GRAVEL D 37.5 19 1 fine D6 8.3 14.38.38 coarse 1 GRAIN SIZE IN MILLIMETERS SAND medium fine Classification Well-Graded Gravel with Silt and Sand (GW-GM) Poorly-Graded Gravel with Sand (GP) Silty Sand (SM) D3 D1 %Gravel.89 6.24.72 77 9.1 LL %Sand 38 18 59.1 SILT OR CLAY PL %Silt PI 12 4 32 Cc 2. 3.8 Cu 162.4 2. %Clay.1
U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 12 6 4 3 2 1 1/2 1 3/4 1/2 3/8 1/4 #4 #1 #2 #4 #6 # #2 HYDROMETER 9 8 7 PERCENT FINER BY WEIGHT 6 4 3 2 Sheet 3 of 4 FIG. 11 October 213 32-1-234 GRAIN SIZE CLASSIFICATION 1 1, Sample COBBLES B-4 S1 B-4 S3 B-5 S1 Sample B-4 S1 B-4 S3 B-5 S1 Depth, Ft. - 1.5 5. - 6.5. - 1.5 Depth, Ft. - 1.5 5. - 6.5. - 1.5 coarse GRAVEL 1 fine coarse 1 GRAIN SIZE IN MILLIMETERS SAND medium fine Classification Well-Graded Gravel with Sand (GW) Well-Graded Sand with Silt and Gravel (SW-SM) Well-Graded Gravel with Silt and Sand (GW-GM) D D6 D3 D1 %Gravel 37.5 1.34 5.51 12.61 2.76 1.13 1.31.45.11.13 61 44 52.1 LL %Sand 35 47 4.1 SILT OR CLAY PL %Silt PI.1 Cc Cu 1.7 23.2 2.1.4 1.1.7 %Clay 4 8 8
U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS 12 6 4 3 2 1 1/2 1 3/4 1/2 3/8 1/4 #4 #1 #2 #4 #6 # #2 HYDROMETER 9 8 7 PERCENT FINER BY WEIGHT 6 4 3 2 Sheet 4 of 4 FIG. 11 October 213 32-1-234 GRAIN SIZE CLASSIFICATION 1 1, Sample COBBLES B-5 S2 B-6 S1 B-6 S4 Sample B-5 S2 B-6 S1 B-6 S4 Depth, Ft 2.5-4.. - 1.5 7.5-9. Depth, Ft 2.5-4.. - 1.5 7.5-9. coarse GRAVEL D 19 63 37.5 1 fine D6.8 9.24 6.74 coarse 1 GRAIN SIZE IN MILLIMETERS SAND medium.24.12 fine Classification Sandy Organic Soil (OL) Well-Graded Gravel with Silt and Sand (GW-GM) Well-Graded Gravel with Silt and Sand (GW-GM) D3 D1 %Gravel 2.3 1.14 2 57 47.1 LL %Sand 4 36 44.1 SILT OR CLAY PL %Silt PI 57 7 8 Cc 2.4 1.6 Cu 38.9 54.4 %Clay.1