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ESA <br /> Ms.Margaret Lagorio <br /> June 29,2005 <br /> Page 2 <br /> Over-drilling the monitoring well borings and removal of the well construction materials generated soil <br /> cuttings containing sand,pulverized PVC well debris and bentonite fragments. As each monitoring well was <br /> drilled out, these materials were placed into a 55-gallon storage drums for temporary storage. This project <br /> required a total of seven drums(shown in attached photographs). ESA collected a composite soil sample <br /> from each drum and submitted them to McCampbell Analytical,Inc. for analysis of total petroleum <br /> hydrocarbons as gasoline,MTBE,benzene,toluene,ethylbenzene,and xylene(BTEX). The laboratory <br /> results of the seven soil samples did not indicate detectable concentrations of petroleum,MTBE,or BTEX. <br /> Please refer to analytical laboratory reports attached to this letter.These results are consistent with the results <br /> of soil analyses,performed during the monitoring well installation in 2001, which did not detect gasoline, <br /> MTBE,or BTEX. Based on the analytical results of the soil cuttings,ESA recommends that UOP use the <br /> soil cuttings as fill material where needed elsewhere on the campus. However,because of the considerable <br /> amounts of clay, silt and other material, these soil cuttings may not be suitable for topsoil intended to support <br /> vegetation in planter boxes. <br /> I <br /> As stated in the October 18, 2004 SJCEHD letter,UOP is required to provide certification in writing that all <br /> record fee title owners have been notified of the request for site closure. According to Mr. Scott Heaton of <br /> UOP, the University sent a'letter complying with this request to the SJCEHD offices on October 19, 2004. <br /> Please contact us immediately if this letter is not currently in your files. <br /> Since the well destruction activities are complete,we trust that it will be possible to issue the NEAR letter <br /> concerning this case. Again, we appreciate your attention to this project,your cooperation throughout the <br /> assessment process, and your assistance in obtaining case closure. Please contact me with questions or if <br /> you require any additional information. <br /> I <br /> Ji <br /> /B. <br /> on, P.G., C.E.G. <br /> Senior Geologist <br /> Attachments: Site Field Photographs <br /> ii Analytical Reports,McCampbell Analytical, Inc. <br /> I <br /> cc: Victoria McCartney, REHS, SJCEHD <br />( Joe Kirim,UOP <br />} Scott Heaton,UOP <br /> John Forsythe,ESA <br /> I <br />{ <br /> i <br /> j <br />