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Mr. Jeff Whitworth - - Zb July LUUb <br /> Regional Water Board for BTEX compounds are equivalent to California Department of Health <br /> Services (DHS) Maximum Contaminant Levels (MCLs). This is not necessarily the case for all <br /> of these compounds as the WQO for benzene is the California Office of Environmental Health <br /> Hazard Agency (OEHHA) Public Health Goal (PHG) for drinking water of 0.15 micrograms per <br /> liter (pg/L) based on cancer risk and not the DHS MCL of 1 pg/L. Based on the anticipated <br /> schedule of work commencing in August 2006, the report for the proposed scope of work in <br /> the Soil Removal Plan and Well Installation Plan is due to this office by 30 November 2006. <br /> If you have any questions regarding this letter, you may contact me at (916) 464-4719 or <br /> mclardy@waterboards.ca.gov. <br /> Mark W. Clardy, P.G. <br /> Engineering Geologist <br /> Private Sites Cleanup Unit <br /> cc: Mr. Michael Hurd, Scientific Applications International Corporation, Oakland <br /> Mr. Mike Infurna, San Joaquin County Environmental Health Department, Stockton <br /> Ms. Joanne Kimbrough, Tracy <br /> Mr. Manuel Oliveira, Escalon <br /> Mr. Joseph Rivani, Global Investment & Development LLC. Los Angeles <br /> Mr. David K. Wood, Neil O. Anderson & Associates, Lodi <br /> Mr. Nader Shareghi, Mountain House Community Services District, Stockton <br /> Mr. Ron Skaggs, Condor Earth Technologies, Inc., Stockton <br /> Ms. Nicole A. Tutt, Nossaman, Guthner, Knox & Elliott LLP, San Francisco <br /> MWC/W:\slit dod\AustinStaff\Mark\Shell Mtn.House Pipeline Tracy\4.3-06 Shell Mtn House B RAP.doc <br />