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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> 't�OO1'T�f AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS. USING THE FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR P. n r Z h x 748x:3 <br /> DISSOLVED CONSTITUENT'S. where <br /> P = catwlated purge volume (gallonsl <br /> n � 314 <br /> r = ra¢s of weif casino in feet <br /> h = hegm of water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> WELL EVACUATED TO PRACTICAL LIMITSI THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH, CONDUCTM Y, <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME. <br /> NO YES <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL F+ECHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING SUFFICIENT FOR SAMPLE <br /> CRITERIA COLLECTION WITHIN 24 HOURS <br /> pH - t 01 pH units OF EVACUATION TO DRYNESS. <br /> COND - t 10% <br /> TEMP = + 10 "F <br /> YE5 NO <br /> EF -a] 1 -� - <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 j AND TURBIDITY,THEN SAMPL,WC�. <br /> WELL SAMPLING WATER. MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY. <br /> • <br /> EMC O N rAm <br /> Associates 11MONITORING WELLPURGWG PROTOCOL <br />