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CLOSURE REQUEST 5-31-94 <br /> February 22, 1990 Log of soil aeration <br /> February 26, 1990 Update Status Report #2 with <br /> January, 1990 ground water <br /> sampling. <br /> May 31, 1990 Update Status Report #3 with <br /> workplan to install vapor <br /> extraction wells in <br /> excavations . <br /> September 26, 1990 Update Assessment, Status <br /> Report ##4, with workplan for <br /> Vapor Recovery Pilot Test. <br /> January 24 , 1991 Update Status Report #5 with <br /> results of slug test and vapor <br /> recovery pilot test. <br /> July 26 , 1991 Update Status Report #6 , with <br /> installation of vapor recovery <br /> wells (P1, P3 and EX) , Start <br /> of interim vapor extraction, <br /> 4/26/91 (Interim Variance <br /> Decision No. 91-19) . <br /> October 20, 1991 Update Status Report #7, <br /> installed additional vapor <br /> recovery wells near P3 (P3A, <br /> P3B, P3C and P3D) . <br /> February 5 , 1992 Update Status Report #8 , <br /> documents efforts to place a <br /> down gradient off site well . <br /> February 24 , 1992 Issued Authority to Construct, <br /> permit No. AP 91- 106 . <br /> April 16 , 1992 Update Status Report #9 , with <br /> workplan to perform <br /> confirmation soil sample <br /> borings near P3 and SB2 <br /> August 7, 1992 Update Status Report #10 <br /> August 14, 1992 Update Status Report #11 <br /> Drilling of confirmation soil <br /> sample boring and installation <br /> of MW7 . <br /> September 18, 1992 Update Status Report #12 <br /> • November 24 , 1992 Update Status Report #13 <br /> page2 <br />