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HF WHF Environmental Consultants, Inc. <br /> Post Office Box 6729 <br /> Modesto, CA 95355-6729 <br /> (209) 579-8138 <br /> 16 March ECIN�`j <br /> Margaret Lagono ` <br /> San Joaquin County Environmental Health Department MAR 2 0 1992 <br /> PO Box.2009 EN.VIRoNi(VIEN-F Ar.-HEf�LI H <br /> Stockton CA 95202 PE h iVl�T�Q-h VI 's <br /> SUBJECT: Royal Oak Savings & Loan, 510 N. Main St., Manteca <br /> Site Code #2393 <br /> Dear Margaret: <br /> Pursuant to our recent meeting concerning this site, we would like to do a test <br /> for soil vapor extraction, at the site. We would like to install a vacuum pump on Well <br /> #2, near the southwest corner. We will use Wells #5 and #7 as vent wells. We are <br /> going to try the system first without blocking the aquifer portion of the well screen in <br /> Well #2. <br /> An air sample will be obtained from the pump to quantify what we are doing, <br /> then we will block the air flow from the aquifer by installing an air-tight plug at the top <br /> of the aquifer area. We will then obtain another air sample to see if this is a more <br /> effective means of extracting the soil vapors. If neither method is effective, a formal <br /> proposal to install a soil vapor extraction well near MW-2 will be submitted. <br /> We will let you know when we are ready to perform our tests. We anticipate <br /> doing the test in the next two (2) weeks. Thank you for your input and suggestions at <br /> the meeting. <br /> Si"rely, <br /> Steven J. Furnas, REA <br /> WHF Environmental Consultants, Inc. <br /> SJF/cdc <br /> n <br />