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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. Benkosky'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 DTSC 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 /> dlewis@waterboards.ca.gov. <br /> DEVRA LEWIS <br /> Environmental Scientist <br /> cc: Mr. Steven Becker&Jerry Lile,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 Francisco <br /> Mr. Sean Sherlock, Snell&Wilmer,Irvine <br /> Mr. Derrick Vallance, ConocoPhillips, Houston, TX <br /> Mr. 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. Robert Traylor, Golden State Environmental, San Diego <br /> Ms. Susan Mearns, Santa Monica <br />