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��. MONITORING--WECLPURGI-NG_PROTOCOL.... <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> OWT <br /> CHECK FOR FLOATING PRODUCT <br /> YES <br /> EL. <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION: <br /> DO NOT SAMPLE WELL FOR P =n e x 7.48 x 3 <br /> DISSOLVED CONSTITUENTS. where: <br /> P=calculated purge volume(gailons) <br /> n=3.14 <br /> r=radius of well casing in feet <br /> h=height of water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED TO PRACTICAL LIMITS THE CALCULATED PURGE VOLUME WHILE <br /> MONITORING GROUNDWATER <br /> OF DRYNESS BEFORE REMOVING 5TABILIZATiON INDICATOR PARAMETERS <br /> CALCULATED PURGE VOLUME (pH, CONDUCTIVITY,TEMPERATURE)AT <br /> INTERVALS OF ONE CASING VOLUME._ <br /> NO YES <br /> FINAL TWO SETS OF GROUNDWATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING <br /> CRITERIA: WELL RECHARGES TO A LEVEL <br /> pH =f 0.1 pH units. SUFFICIENT FOR SAMPLE <br /> COND. =± 10% COLLECTION WITHIN 24 HOURS <br /> TEMP. =:E 1.0 7 OF EVACUATION TO DRYNESS. <br /> YES j�l YES NO1. <br /> WELL PURGING CONTINUE PURGING; EVACUATE FIELD TEST FIRST RECORD WELL <br /> CRITERIA MET; ADDITIONAL CASING VOLUME RECHARGE WATER FOR AS DRY FOR <br /> PROCEED TO OF WATER, MONITORING INDICATOR PARAMETERS, PURPOSES OF <br /> WELL SAMPLING. INDICATOR PARAMETERS FOR THEN PROCEED TO WELL SAMPLING. <br /> STABILITY. SAMPLING. <br /> Cn� <br /> FiGURE_.. <br /> tlz%� I B-1 <br /> EMMONITORING WELL.PURGING PROTOCOL <br />