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MONITORING WELL PURGING PROTOCOL <br /> EIIACON MEASURE AND RECORD DEPTH TO WATER <br /> .aaoci�:t� 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 p n r Z h x 7 d8 x 3 <br /> DISSOLVED CONSTITUENTS. <br /> where: <br /> P = calculated purge volume(gallons) <br /> n 3.14 <br /> r = rachis at wesi casing in feet <br /> h = heignt at water column in Leet <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 STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAME a S(PH, CONDUCTIVITY. <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> OF ONE CASING VOLUME <br /> NO r <br /> YES <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 - 10%pH units WITHIN 24 FURS <br /> COND = <br /> PH OF EVACUATION TO DRYNESS. <br /> t 10 <br /> TEMP = 1 0 OF <br /> YES NO <br /> YES Np <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,THEN SAMPLINM <br /> WELL SAMPLING WATER. MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY <br /> EMCO NFIGURE <br /> Associates MONITORING WELL PURGING PROTOCOL A-1 <br />