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1 <br /> 1 (2) Characterization of the vadose zone beneath the <br /> 2 facility and areas where off-site contamination <br /> 3i� has occurred. Such characterization shall <br /> 4 include but not limited to the following <br /> 5 information: , <br /> 6I ( i) Unified Soils Classification Scheme <br /> i <br /> 7 (USCS) soil classification; <br /> i <br /> g (ii) Surface soil distribution; <br /> g (iii) Transects of soil stratigraphy; <br /> 10 (iv) Hydraulic conductivity; <br /> 11 (v) Relative permeability; <br /> 1 <br /> 12 (vi) Bulk density; <br /> 13 (vi) Porosity; <br /> 14 (viii) Soil sorptive capacity; <br /> 15 (ix) Cation exchange capacity (CEC) ; <br /> 16 (x) Soil organic content; <br /> 17 (xi) Soil pH; <br /> lg (xii) Particle size distribution; <br /> lg (xiii) Depth of water table; <br /> 20 (xiv) Moisture content; <br /> 21 (XV) Effect of stratification on unsaturated <br /> 22 flow; <br /> 23 (xvi) Infiltration <br /> I <br /> 24 (xvii) Evapotranspiration; <br /> 25 (xviii)Storage capacity; <br /> 26 (xix) Vertical flow rate; and <br /> 27 (xx) Mineral content. <br /> -26- <br /> C:OLIRT PAMR <br /> OTA1R or CALtrOOM1A <br /> 11TO. 113 111[v. ••721 <br /> 86 747W 11 <br />