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Moore Petroleum Page 2 of 2 <br /> 5491 F Street 10 March 2008 <br /> Banta, California <br /> • The approximate proportions of DAP, DBP, dinoseb and PCP used in weed <br /> oil; <br /> • The fate and transport characteristics of DAP, DBP, dinoseb and PCP; <br /> • :The environmental persistence of each of these chemicals of interest; and <br /> • The expected concentrations of these weed oil markers, given the <br /> concentration of TPH-mo detected in the grab sample. ' <br /> In other words, on a technical basis, what is the likelihood of actually detecting these <br /> compounds based on what is known of the site and the chemicals of interest? Submit <br /> the above information to the EHD by 12 May 2008; the information maybe submitted <br /> in letter form. Please note that,the Cleanup .Fund may decide not to reimburse the <br /> costs for the DAP, DBP; dinoseb or,.' PCP analyses as these! are not common <br /> chemicals associated with fuel or waste oil UST sites; you should check with the <br /> Cleanup Fund if this is of concern-. <br /> Please be advised that the EHD does not have authority for regulatory oversight of <br /> contamination resulting from above ground storage tanks.- If the results of this <br /> investigation show, the contamination is from -the above ground. storage tanks the <br /> case will be referred to the Central Valley Regional Water Quality Control Board <br /> (CVRWQCB). <br /> Questions or,comments may be directed to Nuel Henderson at (209) 468-3436. <br /> Sincerely, <br /> Nuel C. Henderson, Jr., PG Margare agorio, REFYS <br /> Engineering Geologist Program Coordinator <br /> C: J. Barton, PG.—CVRWQCB; 11020 Sun Center Dr. #200, Rancho Cordova, CA 95670 <br /> D. Lafontaine, PE—AEI; 11244 Pyrites Way, Gold River, CA 95670 <br /> 1 <br /> i <br /> WP Comment Letter 0308. <br />