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October 19, 1990 <br />Mr. William J. Marshall, Chief <br />Waste Discharge to Land Unit <br />California Regional Water Quality Control Board <br />Central Valley Region <br />3443 Routler Road - Suite A <br />San,ramento, CA 95827-3098 <br />Re. T)Jsposaj of The Celot ex Corpoiration Waste Material at <br />Corral Hollow Landfill, San Joaquin County (Case No. 1896) <br />Dear Mr. Marshalh <br />#572 P05 <br />The Calotex Corporation has had waste material for the Tracy fiac1lity <br />analyzed for total lead. Di�e to Interferences and difficulty In ter et',mring <br />the $arnple for treatment with acid as required, a detection feel higher <br />than what you Indicated In your letter of October 10 was required. However, <br />the test results are non-detected. in an effort to satisfy your apparksmt <br />concern of disposal of the material at the Corral HoUow Landfill, the <br />foRowing points are offered-, <br />The flrst water bearing formation is approximately 200 feet <br />below the, base of the landfill. The hydraulic r° diad: Is generally <br />to the southeast. <br />2� If we were to assume a- llssv,fl of .05, which is the water quality <br />standards for dr1nkJrqY,, wallm-, as being the criteria at the Corral <br />Hollow Landfill and use the "designated level methodology" <br />procedvre only in reverse order, we could arrive at a <br />concentration of lead in the waste material to be placed In the <br />landfill. <br />-1 1 <br />