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Mr.Thomas Bauhs .2- 13 January 2005 <br /> 2. Although the sample identification nomenclature was described in an email from Mr. Rusty <br /> Benkosky of SECOR on 5 January 2005,the final investigation report needs to clarify which <br /> samples are confirmation samples and the location of the sample collection(i.e.,bottom or <br /> sidewall). <br /> 3 In Mr. Benkcsky's 5 January 2005 email,he states that a preliminary QA/QC of the laboratory <br /> analytical data was performed,but a final QA/QC will be included for the final report. The <br /> investigation report needs to discuss not only the QA/QC of the data,but also detection limits of <br /> the samples. Some of the method detection limits were elevated and resulted in non-detectable <br /> results,with some of the method detection limits being above levels for acceptable risk. <br /> Although Regional Board and DISC staff acknowledge that the data collected during these <br /> activities were not in support of a health risk assessment,all data collected at the site is <br /> considered potentially viable for the completion of a health risk assessment. <br /> As stated above,the final remedial activities investigation report is due by 10 February 2005 and needs <br /> to address the above comments. If you have any questions,you may contact me at(916)464-4719 or <br /> diewis rQt watmboards.ea.gov. <br /> DEVRA LEWIS <br /> Environmental Scientist <br /> cc: Mr.Steven Becker&Jerry kite,Department of Toxic Substances Control,Sacramento <br /> • Mr.Jeffrey Wong,San Joaquin County Environmental Health Department,Stockton <br /> Ms.Kitty Walker,Stockton Department of Housing and Redevelopment,Stockton <br /> Mr.Tracy Sizemore,ConocoPhillips,Tempe,AZ <br /> Mr.Robert Goodman,Law Office of Robert C.Goodman,San Fpancisco <br /> Mr.Sean Sherlock,Snell&Wilmer,Irvine <br /> Mr.Derrick Vallance,ConocoPhilkips,Houston,TX ' <br /> Mi.William Brown,Esq.,Daley&Heft,Solana Beach <br /> Ms. Gretchen Louden,Cesar Chavez Central Library,Stockton <br /> Mr.Rusty Benkosky and Clint Harms,SECOR International Incorporated,Sacramento <br /> Ms.Margaret Dahlen,Earth Tech,Sacramento <br /> Mr.Rbbert Traylor,Golden State Environmental,San Diego <br /> Ms. Susan Mearns, Santa Monica <br /> • <br />