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V� <br /> MONITORING WELL PURGING PROTOCOL <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> *0WT <br /> =CHECK FOR FLOATING PRODUCT <br /> YES <br /> NO <br /> F <br /> RE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> NG PRODUCT THICKNESS USING THE FOLLOWING EQUATION <br /> SAMPLE WELL FOR P= n rZ x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS where <br /> P=calculated purge volume(gallons) <br /> n =3 14 <br /> r=radius of well casing in feet <br /> h = height of water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TO <br /> =DR7YNESS <br /> O PRACTICAL LIMITS THE CALCULATED PURGE VOLUME WHILE <br /> ORE REMOVING MONITORING GROUNDWATER <br /> URGE VOLUME STABILIZATION INDICATOR PARAMETERS <br /> (pH, CONDUCTIVITY, TEMPERATURE)AT <br /> INTERVALS OF ONE CASING VOLUME <br /> NO <br /> YES <br /> FINAL TWO SETS OF -7 <br /> GROUNDWATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING <br /> CRITERIA <br /> WELL RECHARGES TO A LEVEL <br /> PH =; 0 1 pH units SUFFICIENT FOR SAMPLE <br /> COND =; I 0 <br /> TEMP = 1 0 OF <br /> COLLECTION WITHIN 24 HOURS <br /> OF EVACUATION TO DRYNESS <br /> YES NO <br /> X <br /> YES NO <br /> WELL PURGING CONTINUE PURGING, EVACUATE FINDICATOR <br /> IRST <br /> CRITERIA MET, ADDITIONAL CASING VOLUME RECORD WELL <br /> ATER FOR A5 DRY FOR <br /> PROCEED TO OF WATER. MONITORING ARAMETERS,WELL SAMPLING INDICATOR PARAMETERS FOR ED TO WELL PURPOSES OF <br /> STABILITY SAMPLING <br /> Z7**%N A f FIGURE � <br /> 0 i r MONITORING WELL PURGING PROTOCOL <br /> Al <br />