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j 0 <br /> Ar. Doug Dutton 1� -2- 7 February 1986 <br /> 3. Monitoring of the cleanup process, and post-cleanup monitoring may last for <br /> more than one year. <br /> 4. The cleanup goal for chloroform in ground water remains 0.2 ppb, as stated <br /> in our 14 February 1985 letter. GP should propose alternatives and costs <br /> of cleanup to this concentration in the ground water. <br /> S. GP should consider alternative methods of treatment and disposal other than <br /> stripping tower and disposal to the storm water pond or the irrigation <br /> ditch. <br /> We encourage GP to begin construction of BC17 as soon as possible. Construction <br /> of BC15 and BC16 should begin as soon as acceptable locations are agreed upon. <br /> Once further plume definition is complete, GP should submit a detailed cleanup <br /> plan, based upon that definition, incorporating the methods which capture the <br /> greatest amount of chloroform. <br /> If you have any questions, please call Dan Ward at (916) 324-8891. <br /> ANTONIA . J. VORSTER <br /> Senior Engineer <br /> DTW:jec <br /> cc: Department of Health Services, Toxic Substances Control Division, Sacramento <br /> Department of Health Services, Sanitary Engineering Branch, Stockton <br /> ,,San Joaquin Local Health District, Stockton <br /> Mr. Mike Locke, City of Tracy <br /> Mr. Mike Goldstein, Georgia-Pacific, Montebello <br /> Mr. Ivan Schaffer, Georgia-Pacific, Tracy <br />