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."INDUSTRIES <br /> 1041 S. PERSHING AVE., STOCKTON. CALIFORNIA 95206 <br /> 209/462-9911 NO. CALIF. 800/332-5900 <br /> CALifORNIA STATE LIG 4672Y3 <br /> December 9, 1987 <br /> San Joaquin Local Health District <br /> Environmental Health <br /> P.D. Box 2009 <br /> Stockton, CA 95201 <br /> Attention: Donna Heran <br /> Re: Laura Scudders, 100 Valpico Road, Tracy, California <br /> Dear Donna, <br /> As per our phone conversation, I would like to outline a plan to <br /> complete the tank closure at Laura Scudders in Tracy. For the purpose <br /> of clarity, I would like to present a brief background of the project. <br /> After removal of arse 10,000 gallon diesel tank, the initial soil <br /> sample results showed benzene, tolulene and zylene at non-detectable <br /> levels. The total extractable hydrocarbons were at 8200 ppm. <br /> ".. After discussion with Doug Wilson and Harlan Knowl, it was agreed <br /> that deeper samples could be taken by hand auger. <br /> Two samples were taken by auger at both ends of the excavation. <br /> The first samples were taken at a depth of nineteen feet. The second <br /> set of samples was, taken at twenty four feet. A water sample was also <br /> taken from an adjacent well. <br /> The soil samples at nineteen feet and the water sample were <br /> analyzed by Trace Analysis Laboratory Inc. of Hayward. Trace is a <br /> state certified lab. The report from Trace Analysis Inc. (attached) <br /> shows all concentrations well below state action levels. All sample <br /> results are reported in U/KG or parts per billion. <br /> With this, Laura Scudders is requesting that they be allowed to <br /> remove soil at a depth of twenty feet, at which time one further soil <br /> sample can be taken to check for BTX and Total Hydrocarbons. A sample <br /> of the soil removed will also be taken to ascertain the need for <br /> aeration. The removed soil will then be left on site to be aerated by <br />