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OVERBURDEN <br /> We are describing all of the material below the topsoil that cannot be used as sand or <br /> gravel for construction materials production as overburden. This material was <br /> encountered beneath the topsoil in all of our borings except boring 3. The overburden <br /> varied from low plasticity sandy silty clay to silty sand. This material extended from the <br /> topsoil to depths up to fourteen feet in boring 11. The average depth to useable sand <br /> and/or gravel beneath the surface was six feet. <br /> SAND, WITH OCCASIONAL GRAVEL <br /> We have described the material which classifies mainly as poorly graded sand (SP) as <br /> SAND, with occasional gravel. In general, this material contained a majority of sand (- <br /> No. 4 sieve size), but there was fine gravel (about 1/2" largest diameter) present in <br /> varying quantities of 5 to 30 percent. The SAND, with occasional gravel, was <br /> encountered beneath the overburden or directly beneath the topsoil in borings 1, 6, 7, 8, 9 <br /> and 11, and extends to depths from fourteen to thirty-seven feet. This material was also <br /> found intermittently above and below the SAND, with gravel; SAND, gravelly; to be <br /> described below in borings 3, 4, 5, 10 and 12. <br /> SAND, WITH GRAVEL <br /> We encountered material in most of the borings which classifies as sand but has a <br /> noticeable amount of gravel present as SAND, with gravel. In general, this material <br /> contained a majority of sand (- No. 4 sieve size), but there was gravel with particle sizes <br /> of up to 1" diameter present in varying quantities, roughly 10 to 40 percent. The SAND, <br /> with gravel, was encountered beneath the overburden or directly beneath the topsoil, as in <br /> boring 10, and extends to a depth of ten to eighteen feet. This material was also found <br /> intermittently above and below the CLAY; SAND, with occasional gravel; SAND, <br /> gravelly; to be described below in borings 3, 5, 6, 7, 9, 10, 11 and 12. <br /> SAND, GRAVELLY <br /> We have described the material which classifies mainly as poorly graded sand (SP) but <br /> has larger gravel present as SAND, gravelly. In general, this material still contained a <br /> Two Rivers Property,WesTest Project No. 440515,February 12,2015 5 <br />