4920 EVERGREEN WAY STAPLES Geotech Report 2022-10-25

GENERAL NOTES DESCRIPTION OF SYMBOLS AND ABBREVIATIONS 0 Water Initially N Standard Penetration Test Encountered Resistance(Blows/Ft.) 17 Water Level After a (HP) Hand Penetrometer Specified Period of Time W V Water Level After Ci) Z — > a Specified Period of Time N ((T) Torvane W J Shelby Split Spoon J W pg ~ (DCP) Dynamic Cone Penetrometer Q H logs are the levels measured in the 0 y borehole at the times indicated. W Groundwater level variations will occur i (PID) Photo-Ionization Detector over time. In low permeability soils, accurate determination of groundwater (OVA) Organic Vapor Analyzer levels is not possible with short term water level observations. DESCRIPTIVE SOIL CLASSIFICATION Soil classification is based on the Unified Soil Classification System.Coarse Grained Soils have more than 50%of their dry weight retained on a#200 sieve;their principal descriptors are:boulders, cobbles,gravel or sand. Fine Grained Soils have less than 50%of their dry weight retained on a#200 sieve;they are principally described as clays if they are plastic,and silts if they are slightly plastic or non-plastic. Major constituents may be added as modifiers and minor constituents may be added according to the relative proportions based on grain size. In addition to gradation,coarse-grained soils are defined on the basis of their in-place relative density and fine-grained soils on the basis of their consistency. LOCATION AND ELEVATION NOTES Unless otherwise noted, Latitude and Longitude are approximately determined using a hand-held GPS device.The accuracy of such devices is variable. Surface elevation data annotated with+/-indicates that no actual topographical survey was conducted to confirm the surface elevation. Instead,the surface elevation was approximately determined from topographic maps of the area. RELATIVE DENSITY OF COARSE-GRAINED SOILS CONSISTENCY OF FINE-GRAINED SOILS (50%or more passing the No.200 sieve.) (More than 50%retained on No.200 sieve.) Consistency determined by laboratory shear strength testing,field Density determined by Standard Penetration Resistance visual-manual procedures or standard penetration resistance U) Descriptive Term Standard Penetration or Descriptive Term Unconfined Compressive Strength Standard Penetration or 2 (Density) N-Value (Consistency) Qu,(psf) N-Value Ce Blows/Ft. Blows/Ft. W I— Very Loose 0-3 Very Soft less than 500 = 0 1 I— C7 Loose 4-9 Soft 500 to 1,000 2-4 Z W IY Medium Dense 10-29 Medium Stiff 1,000 to 2,000 4-8 I— N Dense 30-50 Stiff 2,000 to 4,000 8-15 Very Dense >50 Very Stiff 4,000 to 8,000 15-30 I Hard >8,000 >30 RELATIVE PROPORTIONS OF SAND AND GRAVEL GRAIN SIZE TERMINOLOGY Descriptive Term(s) Percent of Major Component of other constituents Pry Weight of Sample Particle Size Trace <15 Boulders Over 12 in.(300 mm) With 15-29 Cobbles 12 in.to 3 in.(300mm to 75mm) Modifier >30 Gravel 3 in.to#4 sieve(75mm to 4.75 mm) Sand #4 to#200 sieve(4.75mm to 0.075mm Silt or Clay Passing#200 sieve(0.075mm) RELATIVE PROPORTIONS OF FINES PLASTICITY DESCRIPTION Descriptive Term(sl Percent of Term Plasticity Index of other constituents Pry Weight Non plastic 0 Trace <5 Low 1 -10 With 5-12 Medium 11 -30 Modifier >12 High >30 lierracon Exhibit: C-1