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URS <br /> May 24,2004 <br /> Mr. Robert McClellon <br /> SupervisorR.E.H.S. 04 MAY 25 PN 2: 41 <br /> San Joaquin County Environmental Health Department <br /> 304 East Weber Avenue,Third Floor <br /> Stockton, California 95202-2708 <br /> Subject: Resolution of Subsequent Quarterly Monitoring Period <br /> World Enterprises Site <br /> Stockton, California <br /> Dear Mr. McClellon: <br /> This letter provides our understanding of the resolution discussed with Mr.Ted Tasiopoulos of San <br /> Joaquin County Environmental Health Department(SJCEHD)of the subsequent sampling and reporting <br /> period for the World Enterprises site in Stockton, California. <br /> BACKGROUND <br /> A work plan dated November 17,2003 to install and monitor the gas migration monitoring probes at the <br /> World Enterprises site was transmitted to you for approval. In this work plan,the sampling interval was <br /> specified to be"... on a quarterly basis for four quarters ..." Following receipt of SJCEHD comments, a <br /> work plan addendum dated December 12, 2004 to alter the construction of the probes was transmitted to <br /> SJCEHS for approval. The work plan and addendum was approved by SJCEHS. The field activities to <br /> install the probes and to measure the methane concentration in the probes were completed on April 7, <br /> 2004. To meet the condition in the work plan for quarterly monitoring of the probes,the probes will need <br /> to be sampled during the week ending July 9, 2004. <br /> In a letter dated May 7, 2004, you specified that"The EHD is requiring quarterly sampling of the gas <br /> probes to be performed within thirty(30)days of receipt of this letter." To meet the condition in the May <br /> 7, 2004 letter for quarterly sampling of the gas probes to be performed within 30 days,the probes will <br /> need to be sampled by June 6,2004. <br /> CONCLUSION <br /> On May 17, 2004,Mr.Ted Tasiopoulos of SJCEHD was contacted to resolve the differences between the <br /> work plan and the May 7, 2004 letter of the subsequent sampling period. Mr. Tasiopoulos specified that <br /> in consultation with you, it was acceptable to complete the quarterly monitoring activities at the World <br /> Enterprises site in July 2004. <br /> If you should have any questions concerning this letter,please give me a call at(916) 679-2081. <br /> Very truly yours, <br /> URS <br /> Jay ne <br /> Se or ivil Engineer <br /> cc* Ms.Judy McCampbell,RadioShack <br /> URS Corporation <br /> 2520 Venture Oaks way, Suite 250 <br /> Sacramento, CA 95833-3200 <br /> Tel: 916.679.2000 <br /> Fax: 916.929.7263 YAPrcjects\Radioshack\work plan\052404.doc <br />