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�1 MONITORING WELL PURGING PROTOCOL <br /> MEASURE AND RECORD DEPTH 10 WATER AND <br /> WELL TO"IAL DEPTH <br /> O 1f■�N 1 <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS USING TI-IE FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR P = n rzh x 7 4$ x 3 <br /> DISSOLVED CONSTITUENTS where <br /> P=calculated purge volume (gallons) <br /> n=314 <br /> r=radius of well casing in feet <br /> It=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 /> OF DRYNESS BEFORE REMOVING MONITORING GROUNDWATER <br /> CALCULATED PURGE VOLUME STABILIZATION INDICATOR PARAMETERS <br /> (PH, CONDUCTIVITY, TEMPERATURE)AT <br /> INTERVALS OF ONE CASING VOLUME <br /> NO $ <br /> FINAL TWO SETS OF GROUNDWATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING <br /> CRITERIA IWELL RECHARGES TO A LEVEL <br /> GOND =± <br /> PH = ± 1 O 1 pH units SUFFICIENT FOR SAMPLE <br /> COLLECTION WITHIN 24 HOURS <br /> TEMP = ± 1 0 0°F OF EVACUATION TO DRYNESS <br /> YES NO YES NO <br /> WELL PURGING CONTINUE PURGING,EVACUAI E 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 I SAMPLING <br /> FIGURE <br /> EM <br /> CoN MONITORING WELL PURGING PROTOCOL A-1 <br />