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Water (Aality Site AssessAent: Soils <br /> Perform the following for each constituent of concern. <br /> 07 J% 11/4/92 <br /> Background <br /> Soil Extract z Is site <br /> Concentration Begin here. soil extract =water <br /> (µg/I extract) concentration< So <br /> background soil Yes t <br /> ...` extract? <br /> Site Soil Multiply by no O <br /> Extract extraction test dilution O <br /> Concentration factor(10 for WET; <br /> (µg/I extract) 20 forTCLP) V/IUUrJ <br /> [NI71Al� I <br /> INFOMNI` Site Soil <br /> ....................._._................_._.... <br /> [FRC?M rt� v: Reasonable <br /> Worst-Case Is site <br /> Leachate soil leachate STO=quality. <br /> Concentration concentration<_ <br /> /I) background round es Soil constituent <br /> Background g 9 Y threaten wat <br /> �R. water? <br /> Ground Water " <br /> Concentration '" <br /> no <br /> .g <br /> 3 <br /> Numercal ? Choose Numercal Soil constituent <br /> Limit to the larger of Limit to Protect Is©5®? does not threaten <br /> Implement r: Q and Ground Water yes beneficial uses. <br /> Water Quality Beneficial <br /> Standards + Uses <br /> no <br /> © Is this <br /> Attenuation degree of STOP <br /> Divide Required attenuation available <br /> ©b to Protect between contaminated Soil constituent does not <br /> y Background soil and ground yes threaten water quality. <br /> Water Quality water? <br /> no Remediate soil to <br /> lowest level achievable <br /> or to background.• <br /> OO Is this no <br /> Attenuation degree of STOP. <br /> Divide Required attenuation available Is®<Q Soil constituent does not <br /> © by® to Protect between contaminated yes yes threaten water quality. <br /> Beneficial soil and ground ttq ty• <br /> Uses water? <br /> Remediate soil to below <br /> beneficlal use protective level <br /> no and to lowest level achievable <br /> or to background.* <br /> State Water Board Resolution Nos.68-16 and 92-49 and 22 CCR§2550.4, require cleanup to background unless infeasible to do so. <br /> In addition, cleanup level must present no risk to human health or to the environment(per conventional risk assessment procedures). <br />