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MONITORING WELL PURGING PROTOCOL <br /> EMCON MEASURE AND RECORD DEPTH TO WATER <br /> .asoc�.rE■ AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCTTHICKNESS. USING THE FOLLOWING EQUATION: <br /> DO NOT SAMPLE WELL IISSOLVE CONWM UENNTS. P- rt r Z h x 7 48 x 3 <br /> where: <br /> P a calculated purge volume (gallons) <br /> TT - 3.14 <br /> r = radius of weti casing in feet <br /> h = height of water cotumn in feet <br /> EVACUATE WATER FROM WELL EQUAL, TO <br /> WELL EVACUATED TO PRACTICAL LIMITS THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABILIZATM <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH. CONDUCTIVITY. <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CAS=NO VOLUME- <br /> NO <br /> OLUMENO YE5 <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL RECHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING SUFFICIENT FOR SAMPLE <br /> CRITERIA COLLECTION WITHIN 24 HOURS <br /> pH - t 0.1 pH units OF EVACUATION TO DRYNESS. <br /> COND. - t 10% <br /> TEMP = 10 OF <br /> 9E i <br /> YES Np <br /> FIELD TEST FIRST RECORD WELL <br /> a I <br /> WELL PURGING CONTINUE PURGING* RECHARGE WATER FOR AS DRY FOR <br /> CRITERIA MET; EVACUATE ADDITIONAL INDICATOR PARAMETERS PURPOSES OF <br /> PROCEED TO CASMG VOLUME OF AND TURBIDITY,THEN SAMPLINM <br /> WELL SAMPLING WATER, MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY. <br /> FMWRE <br /> EMCON <br /> Associates MONITORING WELL PURGING PROTOCOL A=1 <br />