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S ECOR <br /> Ms. Lori Duncan <br /> April 25, 2005 <br /> Page 2 <br /> The over-excavated soil will be stockpiled and covered with visqueen sheeting at the site for <br /> sampling and later disposal. Stockpiled soil will be sampled and analyzed for the presence of TPHg, <br /> BTEX compounds, and MtBE by EPA Methods 8015 and 8020, and total lead by EPA Method 6010. <br /> If soil is found to be contaminated with petroleum hydrocarbons, the soil will be disposed of at an <br /> approved landfill. <br /> If you have any questions or comments regarding the contents of this letter, please feel free to <br /> contact Brian Carey of SECOR at (916) 861-0400 extension 241 or Darin Rouse of EMC at (925) <br /> 842-1572. <br /> Sincerely, <br /> SECOR International Incorporated <br /> ' GI;O�o <br /> Carryl G. r Daniel J. Da ' , FR.G. � I <br /> Project Scientist Senior Geologist �Ci1 �t�L S• �'� <br /> Enclosures: n1o.8435 <br /> Figure 1, Estimated Limits of Excavation Area <br /> OF CPQ <br /> Attachment 1 Regulatory Correspondence <br /> cc: Mr. Darin Rouse, ChevronTexaco Environmental Management Company, <br /> San Ramon, California <br /> Mr. David Evans, SECOR International, Inc, Rancho Cordova, California <br /> I:\Chevron\94275\REPORTS\2005\WorkPlan Addendum.doc <br />