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density condition. ICthis soil is encountered in a relatively dry, medium density condition, it may undergo ver}• <br />slight expansion with the entry of small amounts of moisture but, will undergo long term consolidation upon the <br />addition of larger amounts of moisture. This soil will settle after being loaded. The maximum allowable bearing <br />capacih~ for this soil was found to be 1500 psf in the low density, native condition and in excess of 2500 psf if <br />encountered in a moderate density or recompacted condition. <br />Soil T}pe III was encountered as numerous, thin strata in the embankment and as thin soils in the upper 6 to 12 <br />inches of the pond floor. <br />Soil T}pc III was classified as a silty clay and clayey silt mixture (CL-ML) under the Unified Classification <br />S}•stem. This material is of low plasticity, of low to moderate permeability and was encountered in a low to <br />medium density, slightly moist condition. If this soil is found in a relatively dry, medium densit}• condition, it <br />~i~ll undergo mild expansion with the entry of small amounts of moisture. This soil will settle after being loaded. <br />The maximum allowable bearing capacity for this soil was found to be 900 psf in the native condition and 1600 <br />psf if reworked and wmpacted. <br />• It is interesting to note that if these three soil types are mixed together in approximate proportions as encountered <br />on this site and the boulder fragments are eliminated, these soils will be very similar to the very silty, clayey sand <br />which was used to construct the new embankment of the east side of Pond 12, separating Pond l2 from Pond <br />5. These soils were rcparted in the previous Geotechnical Report by Lincoln DeVore, Job # 86014-J, 5-28-97. <br />]t is proposed these native soils on this site be mixed and used as borrow soils for reconstruction of the south <br />embankment surface and the pond floor surface. <br />Sclcetod samples of soil, which may be utilized for backfill purposes, have been subjected to laboratory Direct <br />Shear Testing (similar to ASTM D-3080 [CD])and Soil Permeability Testing (Falling Head Method). The <br />specimens were remolded. Following are the results. <br /> <br />6 <br />