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Mr Nuel Henderson,Jr, SJCPHS July 1, 2003 <br /> Remedial Action Plan <br /> ARCO Station No 6100 <br /> Page 12 <br /> VW-12, and MW-2 for air bubbling Petroleum hydrocarbons volatilized due to AB will <br /> be captured by SVE in these wells <br /> Stratus proposes to install two 200 cubic feet per minute catalytic oxidizers to extract soil <br /> vapors from the subsurface Two units are necessary to apply adequate vacuum and to <br /> extract soil vapors from various wells screened at different depths A 5-horsepower oil- <br /> less air compressor will be used to inject air at low flow rates ( 0 5 to 1 cfm) for AB In <br /> January 2003, Stratus oversaw the installation of lateral piping to the above-mentioned <br /> wells Figure 23 presents details associated with locations of laterals, wellhead <br /> connections, and the piping manifold Stratus will install a remediation system enclosure <br /> in the vicinity(see Figure 23) of the existing piping manifold <br /> Upon approval of the RAP, Stratus will prepare and submit an authority to construct and <br /> permit to operate the catalytic oxidizers to San Joaquin Valley Air Pollution Control <br /> District (SJVAPCD) <br /> LIMITATIONS <br /> . This report was prepared in general accordance with accepted standards of care that <br /> existed at the time this work was performed No other warranty, expressed or implied, is <br /> made Conclusions and recommendations are based on field observations and data <br /> obtained from this work and previous investigations It should be recognized that <br /> definition and evaluation of geologic conditions is a difficult and inexact art Judgments <br /> leading to conclusions and recommendations are generally made with an incomplete <br /> knowledge of the subsurface conditions present More extensive studies may be <br /> performed to reduce uncertainties This report is solely for the use and information of our <br /> client unless otherwise noted <br /> If you have any questions or concerns, please contact Jay Johnson at (530) 676-6000 <br /> Sincerely, <br /> vupFESS/Q i <br /> STRATUS ENVI ONME C_� S �cq,p fiE• <br /> $ no,c <br /> * 606 <br /> v"'' OVIL <br /> Go S Kowtha, P E � 'oF C11M a Jo son, R G <br /> Senior Project Engineer n P o�ect anager <br /> 1 <br /> cc Mr Paul Supple, Atlantic Richfield Company <br /> Mr Vern Elarth, URS Corporation Americas <br /> P 1Bp-Arco for UR5161001ReportslArco 6100 RAP doe <br />