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i~ <br />U.S. ENVIRONMENTAL PROTECTION AGENCY <br />' REGION I <br />I1 <br />I1 <br />' LOW STRESS (low flow) PURGING AND SAMPLING <br />PROCEDURE FOR THE COLLECTION OF <br />' GROUND WATER SAMPLES <br />FROM MONITORING <br />WELLS <br />II <br />J~~zeo srgr~ <br />a['> <br />~~~ PRONG/ <br />July 30,1996 <br />Revision 2 <br />