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I <br /> a. <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 /> �i <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 bothCextraction 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 #6 is identical to box#4, we will do the same procedure to,this box#6 as to box 44. <br /> 7. The well identified as "J" on the previous map, located near the eastern dispenser island was a <br /> boring, 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 j <br /> cement/concrete. J <br /> 9. Since the remediation compound's slab slopes to the south-southwest, a new drain hole will be <br /> installed on the southwest corner of the remediation compound-Is slab. <br /> 10. Other wells were inspected and considered adequately by Mr. Infurna. I�I <br /> j <br /> 11. We were urged by Mr. Infurna to expedite the installation sof the system. We understand that we <br /> will be back into "in-compliance" status as soon as the vapor extraction system is installed. <br /> Thrifty 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 remaining repairs will be performed <br /> on the week of April 5, 1999. Upon completion of these rgpairs,:,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. i <br /> Sincerely, <br /> I <br /> Chris Panaitescu } <br /> General Manager <br /> Environmental Affairs <br /> i` <br /> Enclosure: Updated Site Plan °I <br /> Previous Site Plan <br /> ,a <br />