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Landmarc Environmental Systems,LLC Site-Specific Health&Safety Plan(SSHSP) <br /> SOIL CLASSIFICATIONS <br /> 1. "Type A" soils: <br /> A. Are cohesive soils with an unconfined, compressive strength of 1.5 ton per square foot(tsf) <br /> (144kPa) or greater. <br /> B. Examples of cohesive soils are: clay, silty clay, sandy clay, clay loam and, in some cases, silty <br /> clay loam and sandy clay loam. Cemented soils such as caliche and hardpan are also considered <br /> Type A. <br /> a) However, no soil is Type A if- <br /> 1. The soil is fissured; or <br /> II. The soil is subject to vibration from heavy traffic, pile driving, or similar effects; or <br /> III. The soil has been previously disturbed; or <br /> IV. The soil is part of a sloped, layered system where the layers dip into the excavation <br /> on a slope of four horizontal to one vertical (4H:1 V)or greater; or <br /> V. The material is subject to other factors that would require it to be classified as a less <br /> stable material. <br /> 2. "Type B" soils are: <br /> A. Cohesive soil with an unconfined compressive strength greater than 0.5 tsf(48 kPa)but less <br /> than 1.5 tsf(144 kPa); or <br /> B. Granular, cohesion less soils including: angular gravel (similar to crushed rock), silt, silt loam, <br /> sandy loam and, in some cases, silty clay loam and sandy clay loam. <br /> C. Previously disturbed soils except those which would otherwise be classed as Type C soil. <br /> D. Soil that meets the unconfined compressive strength or cementation requirements for Type A, <br /> but is fissured or subject to vibration; or <br /> E. Dry rock that is not stable; or <br /> F. Material that is part of a sloped, layered system where the layers dip into the excavation on a <br /> slope less steep than four horizontal to one vertical (4H:1 V), but only if the material would <br /> otherwise be classified as Type B. <br /> 3. "Type C" soils are: <br /> A. Cohesive soil with an unconfined compressive strength of 0.5 tsf(48 kPa) or less; or <br /> B. Granular soils including gravel, sand, and loamy sand; or <br /> C. Submerged soil or soil from which water is freely seeping; or <br /> D. Submerged rock that is not stable, or <br /> E. Material in a sloped, layered system where the layers dip into the excavation or a slope of four <br /> horizontal to one vertical (4H:1 V) or steeper. <br /> 15 <br />