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The strata changes were inferred from the changes in the samples and auger cuttings. The depths <br />shown as changes between strata are only approximate. The changes are likely transitions, <br />variations can occur beyond the location of the borings. <br />The bituminous cores were obtained on September 22, 2021 with a 4-inch diameter diamond <br />studded core barrel using wet coring techniques. Shallow hand auger borings were then advanced <br />through the aggregate base or possible aggregate base to aid in measuring its thickness. <br />3.0 RESULTS <br />3.1 Pavement Section <br />Each of the 6 soil borings were taken within an existing bituminous surfaced roadway. The <br />pavement sections consisted of varying thicknesses of bituminous and aggregate base or Possible <br />aggregate base. The observed pavement section thicknesses are summarized in Table 1 below. <br />Photographs of the pavement cores are included in the Appendix. <br />Table 1. Summary of Existing Roadway Section <br />Boring <br />Number <br />Station <br />Approximate <br />Bituminous <br />Thickness <br />(inches)t <br />Approximate <br />Aggregate Base <br />Thickness <br />(inches)f <br />Subgrade Soil <br />Type <br />Sunwood Drive <br />SB-01 <br />1+00 <br />3 3/4 <br />6 <br />SP <br />SB-02 <br />7+00 <br />4 3/4 <br />7 <br />SP <br />SB-03 <br />13+00 <br />3 3/4 <br />61/2 <br />SP <br />SB-04 <br />18+29 <br />5 <br />7 <br />SP <br />Waco Street <br />SB-05 <br />5+00 <br />5 <br />51/2 <br />SP <br />SB-06 <br />8+85 <br />61/2 <br />11 <br />SP <br />SB = Soil Boring SP = Poorly Graded Sand <br />3.2 Soil Conditions <br />Beneath the pavement section the soil borings encountered native alluvial deposits that extended <br />to the termination depths of the borings. The native alluvial deposits consisted of fine to coarse <br />grained poorly graded sand that contained varying amounts of gravel. The sands generally <br />correspond to the ASTM Classification SP. <br />N-Values within the native sands ranged from 1 to 24 bpf. These values indicate the sands had a <br />very loose to medium dense relative density. <br />3 <br />