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IX. :A7. Composition <br /> :Section <br /> 1 � of the vadoselzone under the impoundment [Health and Safety <br /> � 25208.8(1 )] <br /> . eolo i characterization of soil and unconsolidated <br /> materia s, if present <br /> 'a. Type of materials (clay, silt, etc. ) including discussion of <br /> grain size, bedding, stratification, soil classification, soil <br /> }horizons,--Pbl�6tity, etc. <br /> b. Method of soil classification (Unified Soil Classification <br /> System, American Society for Testing and Materials Test Method* <br /> D-2487, etc. ) <br /> 2. Hydrogeol ogic characteri'zati,on.,.v a-,�,ons_ol ida a m'aa r a.1_ -Irqpk. <br /> . etc. ), ifpresentr <br /> _� <br /> e.- <br /> .� Type` �f "pack ( rine shalt - r ccia , basalt etc <br /> including discussion of mineral composition, gram si <br /> dtexture , degree and type of cementatio6;-O lithifjcation* <br /> primary and secondary orosi.t , ` s r l tification, jointi.nq an_ <br /> racturi n.� atti tudes .of; b ddi n and.. a . ._s; stet s, etc.` <br /> b. Geologic formational names, if known <br /> c. , Regional .relationships o beds, members f"ormat ons, and roc <br /> odies, if known - "� ... _ <br /> 3. Chemical characterization of the unconsolidated materials, if any <br /> a. Method of sampling, sample locations, and rationale <br /> b. Analytical methods, including rationale <br /> c. Discussion of characterization, including presence of those <br /> constituents discharged into the surface impoundment or any <br /> other pollutants <br /> 4. Chemical characterization of the consolidated materials, if any <br /> a. Method of sampling, sample locations,' and rationale <br /> b. Analytical methods, including rationale <br /> c. Discussion of characterization, including presence of those <br /> constituents discharged into the surface impoundment or any <br /> other pollutants <br /> e <br />