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r <br />' Mr John Benedict Project 880039 IA <br /> • <br />' October 25, 2001 <br /> Page 5 <br />' CONCLUSIONS <br /> IAnalytical results of collected groundwater samples from MW-1R were generally <br /> consistent with previous sampling events with the exception of a historical low <br /> concentration of TPH-g Groundwater elevation increased 0 28 feet from the previous <br />' sampling event (February 200 1) The observed groundwater gradient was 0 003 ft/ft to the <br /> southeast <br />' Approximately 41 pounds of TPH-g and zero pounds of benzene were removed during the <br /> second quarter Destruction efficiencies ranged from 87 9 to 98 9 percent TPH-g mass <br /> emissions to the atmosphere ranged from less than 0 01 to 0 05 pounds per day, and <br /> benzene mass emissions was less than 0 00004 to less than 0 0002 pounds per day, <br /> demonstrating the system is operating consistent with permit requirements <br />' IT will continue to perform quarterly groundwater sampling The next sampling event is <br /> tentatively scheduled for August 2001 IT will continue SVE system O&M O&M site <br />' visits will occur weekly and compliance sampling will continue to occur monthly <br /> Please call if you have questions regarding this report or any aspect of the project <br />' Sincerely, �tiatiD G`rO! <br /> O <br /> IT CORPORATION &f+AEL <br /> SOMRAKIS <br /> A1. 11, No 71846;r� <br /> per$Mike gourakis, RG 7194 00 CAI. Kathleen A Waldo <br /> Project Geologist Staff Engineer <br /> 1 <br /> 1 <br /> ITCORPORATION <br /> SAC 111SACRFPIICOMMON1sarDP120011PR11P181880039tA In doe-01Vt 1 <br />