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NOTES RELATED TO BORING RECORDS AND GENERALIZED SUBSURFACE PROFILES 1. Groundwater levels (if encountered) were recorded either during or following the boring completion on the date indicated. Fluctuations in groundwater levels are common - see the report text for a discussion. 2. The boring locations were identified in the field by estimated distances and offsets from existing reference marks and/or other site landmarks. 3. The completed boreholes were backfilled to adjacent site grade using drilling spoils and patched with asphalt cold mix in pavement areas. 4. The Log of Boring records represent our interpretation of soil conditions based on visual classification of the soil samples recovered from the borings. 5. The Log of Boring records are subject to the limitations, conclusions, and recommendations presented in the report text. 6. The Standard Penetration Test (SPT) N -values contained on the Log of Boring records refer to the total blow counts of a 140 -pound drop hammer falling 30 inches required to drive a split -barrel sampler a total distance of 12 inches into soil strata at specific depth intervals. 7. The Hand Cone Penetrometer (HCP) values contained on Log of Boring records and the Cone Penetration Test (CPT) values contained on the Cone Penetration Sounding logs refer to the cone tip resistance recorded when pushing the cone tip into the soil strata at specific depth intervals. 8. The soil and/or rock strata interfaces shown on the Log of Boring records are approximate and may vary from those shown on the logs. The soil and/or rock descriptions shown on the Log of Boring records refer to conditions at the specific location tested. Soil/rock conditions may vary between test locations. 9. Relative density for coarse-grained soils (sands/gravels) and consistency for fine-grained soils (silts/clays) are described as follows: Coarse Grained Soils (Sands and Gravels) Particle Size Limits Fine Grained Soils (Silts and Clays) SPT N -Value HCP Value (kg/cm2) CPT Value (tsf) Relative Density SPT N -Value HCP Value (kg/cm2) CPT Value (tsf) Consistency 0-4 0-16 0-20 Very Loos -2 0-20 0-3 Very Soft 5-10 17-36 21-40 Loose 3-4 21-35 4-6 Soft 11-30 37-116 41-120 Med. Dense 5-8 >35 7-12 Firm 31-50 117-196 121-200 Dense 9-15 13-25 Stiff >50 > 196 1 >200 1 Very Dense 16-30 1 1 26-50 1 Very Stiff >30 1 1 >50 1 Hard 10. Grain size descriptions are as follows: Description Particle Size Limits Boulder Greater than 12 inches Cobble 3 to 12 inches Coarse Gravel 3/4 to 3 inches Fine Gravel No. 4 sieve to 3/4 inch Coarse Sand No. 10 to No. 4 sieve Medium Sand No. 40 to No. 10 sieve Fine Sand No. 200 to No. 40 sieve Fines(Silt/Clay) Smaller than No. 200 sieve 11. Definitions for modifiers used in soil/rock descriptions: Proportion Modifier Approximate Root Diameter Modifier <5% Trace Less than /32" Fine roots 5% to 12% Little 1/32" to 1/4" Small roots 12% to 30% Some 1/4" to 1" Medium roots 30% to 50% And Greater than 1" Large roots Organic Soils: Soils containing vegetative tissue in various stages of decomposition having a fibrous to amorphous texture. Usually having a dark brown to black color and an organic odor. Organic Content Modifiers: <25%: Slightly to Highly Or anic; 25% to 75%: Muck; >75%: Peat 6 fF