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DANTE JOHN NOMELLINI <br />DAVID L. GRILLI <br />DANIEL A. MCDANIEL <br />NOMELLINI & GRILLI <br />PROFESSIONAL LAW CORPORATIONS <br />235 EAST WEBER AVENUE <br />P.O. BOX '1461 <br />STOCKTON. CALIFORNIA 95201 <br />TELEPHONE (209) 465.5883 <br />April 5, 1983 <br />State of California <br />Regional Water Quality Control Board <br />Central Valley Region <br />3201 "S" Street <br />Sacramento, California 95816 <br />Attention: Larry F. Nash, Senior Engineer <br />Dear Sir: <br />DANTE JOHN NOMELLINI <br />PROFESSIONAL LAW CORPORATION <br />DAVID L. GRILLI <br />PROFESSIONAL LAW CORPORATION <br />Re: Disposal of Rotary Drilling Mud; <br />Foothill Sanitary Landfill, <br />San Joaquin County <br />Your letter of March 25, 1983 was referred to me for re- <br />view and response. <br />I am informed that due to recent heavy rain storms the <br />Forward, Inc., disposal site was not accepting drilling mud <br />waste. During the week of March 7, 1983 representatives of <br />Foothill Sanitary Landfill, Inc., met with the Drilling Super- <br />intendent and Mud Engineer from Standard Oil Company of Cali- <br />fornia to discuss the temporary disposal of drilling fluids from <br />their Stockton well locations at the Foothill site. The Standard <br />Oil Company representatives indicated the mud waste consisted of <br />bentonite clay, rain water, make-up water from the Stockton City <br />water supply and minor additives approved by the California DOHS <br />as being non -hazardous. <br />Based upon this information, the wastes were transported to <br />the Foothill Sanitary Landfill, a Class II site in eastern San <br />Joaquin County, California. The waste material was placed in an <br />excavated pond in an area where.they would not contact the Group <br />2 wastes in the working landfill and where they can be contained <br />without co -mingling with surface run-off water. In this area of <br />the site, shallowest ground water exists approximately 600 feet <br />below ground surface. <br />Subsequently, California Water Labs of Modesto, California <br />obtained 3 samples of the drilling fluid for analysis with the <br />following results <br />