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• l <br /> .1 <br /> � MONITORING WELL PURGING PROTOCOL <br /> EIVICON MEASURE AND RECORD DEPTH TO WATER <br /> .s�oeiarEa AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES � <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION: <br /> DO NOT SAMPLE WELL FOR <br /> DISSOLVED CONSTITUENTS. P. n r Z h x 7 4a x 3 <br /> where: <br /> P = Calculated purge volume(gallons) <br /> Tr " 3.14 <br /> r = radius at wetl casing in feet <br /> h - height of water Column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED To PRACTICAL LIMIT THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABIUZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH. CONDUCTIIRTY. <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME- <br /> NO <br /> OLUMENO YES] <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL RE-CHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING <br /> CRITERIA SUFFICIENT FOR SAMPLE <br /> PH - t 0.1 pH units COLLECTION WITHIN 24 HOURS <br /> COND. = t 10% OF EVACUATION TO DRYNESS. <br /> TEMP 1 4 OF <br /> YES <br /> YES <br /> FIELD TEST FIRST RECORD WELL <br /> WELL PURGING CONTINUE PURGING, RECHARGE WATER FOR AS DRY FOR <br /> CRITERIA MET, EVACUATE ADDITIONAL INDICATOR PARAMETERS PURPOSES OF <br /> PROCEED TO CASING VOLUME OF AND TURBIDITY,THEA SAMpLIHp, <br /> WELL SAMPLING WATER. MONITORING PROCEED TO WEU.. <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY. <br /> 01 ROt1gE <br /> EMCON <br /> Associates MONITORING WEIIPURGWG PROTOCOL A=l <br />