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6-02-1998 1 24PM FROM P 5 <br /> Frank's Exxon 4 4 -3 - 26 May 1998 <br /> San Joaquin County <br /> trailer park well However,the contamination may become diluted so the concentrations remain below <br /> the MCLS,Taste and Odor Threshold,end Cehfornia State Action Levels We have no documentation <br /> to determine which scenario will occur <br /> Requirements for"No Further Action Required"letter <br /> • perform a mass balance calculation to determine the amount of substance rcmauung on-site <br /> • Perform a risk assessment and Crate and transport model to predict the concentration of <br /> contaminants at 200 to 360 ft bgs for the on-site domestic well <br /> • Obtain the planned location, depth of screen mtervals,total depth, length of grout casing for <br /> the proposed new trailer park well Perform a nsk assessment and fate and transport model <br /> to predict the concentration of contaminants for this proposed domestic well <br /> • Based on the above information present a rationale why conditions remauung at this site wdl <br /> not adversely impact water quality,health, or other beiaeficial uses <br /> • <br />