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WaterQuality Site Assessfflen • <br /> Soils <br /> Perform the following for each constituent of concern. <br /> J% 11/4/92 <br /> Background <br /> Soil Extract Is site <br /> Concentration Begin here. STOP. <br /> (ig/I extract) soil extract <br /> concentration< yes Soil constituent does not <br /> background soil threaten water quality. <br /> extract? <br /> Site Soil Multiply by no <br /> Extract extraction test dilution O <br /> Concentration factor(10 for WET; <br /> Gig/I extract) 20 for TCLP) <br /> i <br /> INITIAL SITE 11>� <br /> INFORMAT O SiteSoil <br /> [FROM THE R1] Reasonable <br /> t Worst-Case Is site <br /> Leachate soil leachate <br /> © Concentration STOP. <br /> �g/I) concentration<_ Soil constituent does not <br /> background ground yes threaten water quality. <br /> Background water? q y <br /> Ground Water <br /> Concentration <br /> no <br /> Numerical Choose Numerical Soil constituent <br /> Limit to the larger of Limit to Protect Is©<_ 4 ? <br /> Implement Ground Water does not threaten <br /> Water Quality ;il and Beneficial yes beneficial uses. <br /> Standards Uses <br /> no <br /> ® Is this <br /> Attenuation degree of <br /> Divide Required attenuation available STOP. <br /> Soil constituent does not <br /> ©b (2) to Protect between contaminated <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 /> 0 Is this no <br /> Attenuation degree of <br /> Divide Required attenuation available STOP. <br /> Is®<_� ? Soil constituent does not <br /> © by® to Protect between contaminated yes yes threaten water quality. <br /> Beneficial soil and ground q y <br /> Uses water? <br /> Remediate soil to below <br /> beneficial 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 />