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1 <br /> upward with an elbow and capped or plugged The exposed soil within the box will be capped <br /> with a thin layer of cement or concrete to prevent surface water infiltration, while maintaining <br /> possibility for future vapor extraction well installation, if needed <br /> 5 Box #5 is vapor extraction well TB-9, which consists of two nested 2-inch vapor extraction <br /> wells These wells were designated to be part of the vapor extraction system Upon further <br /> ' exploration, it was found that the"lateral"for the remediation system was just capped and buried <br /> within the well box We will connect the lateral pipe to both extraction wells as part of the <br /> system installation Upon completion of the connection from the lateral piping to the extraction <br /> wells, the bottom portion of the well box will be re-sealed with cement/concrete to prevent <br /> surface water infiltration <br /> 6 Box 96 is identical to box#4, we will do the same procedure to this box#6 as to box #4 <br /> 7 The well identified as "J" on the previous map, located near the eastern dispenser island was a <br /> iboring, depicted on an old map as boring TB-14, which is no longer visible <br /> 8 Well MW6 was inspected and found that a portion of the well box's skirt was bent inside,leaving <br /> a small opening for surface water infiltration It was agreed that this opening will be filled with <br /> icement/concrete <br /> 9 Since the remediation compound's slab slopes to the south-southwest, a new drain hole will be <br /> ' installed on the southwest comer of the remediation compound's slab <br /> 10 Other wells were inspected and considered adequately by Mr Infurna <br /> I I We were urged by Mr Infurna to expedite the installation of the system We understand that we <br /> will be back into "in-compliance" status as soon as the vapor extraction system is installed <br /> iThrifty has requested Earth Management Co to perform the repair items discussed above Part of <br /> the repair will be performed on March 30 and 31, 1999, and the remauung repairs will be performed <br /> ' on the week of April 5, 1999 Upon completion of these repairs, we will call you to schedule a <br /> completion inspection <br /> ' Please do not hesitate to call me at (562) 921-3581 ext 390 or Jeff Suryakusuma at ext 311 if you <br /> have any questions regarding this letter <br /> ' Sincerely, <br /> i <br /> Chris Panaitescu <br /> General Manager <br /> Environmental Affairs <br /> i Enclosure Updated Site Plan <br /> Previous Site Plan <br /> i <br />