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taN MONITORING WELL PURGING PROTOCOL <br /> ' EMCON MEASURE AND RECORD DEPTH TO WATER <br /> s e o c I.T E s AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> CALCULATE PURGE VOLUME BY <br /> DO NOT SAMPLE WELL USING THE FOLLOWING EQUATION <br /> FOR DISSOLVED P . 17 r 2 h x 7 48 x 3 <br /> CONSTITUENTS where <br /> P - calculated purge volume(gallons) <br /> ' = 314 <br /> � = radius of well casing in feet <br /> h = height of water column in feet <br /> ' EVACUATE WATER FROM WELL EQUAL TO <br /> THE CALCULATED PURGE VOLUME WHILE <br /> WELL EVACUATED TO PRACTICAL LIMIT MONITORING GROUND-WATER STABILIZATION <br /> OF DRYNESS BEFORE REMOVING INDICATOR PARAMETERS <br /> CALCULATED PURGE VOLUME (pH, CONDUCTIVITY, TEMPERATURE) <br /> AT INTERVALS OF ONE CASING VOLUME <br /> YES <br /> ' <br /> :NSO <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 /> CRITERIACOLLECTION WITHIN 24 HOURS <br /> pH = t 0 Z pH units OF EVACUATION TO DRYNESS <br /> ' COND = t 10% <br /> TEMP = t 1 0 -F <br /> YES NO <br /> YES :: —I <br /> CONTINUE PURGING. FIELD TEST FIRST RECORD WELL <br /> ' WELL PURGING RECHARGE WATER FOR AS pO FOR <br /> CRITERIA MET, EVACUATE ADDITIONAL PURPOSES OF <br /> PROCEED TO CASING VOLUME IN INDICATOR PARAMETERS, <br /> THEN PROCEED TO WELL SAMPLING <br /> WELL SAMPLING WATER, MONITORING' SAMPLING <br /> INDICATOR PARAMETERS <br /> FOR STABILITY <br /> EEMCFIGUREE <br /> O WELL PURGING PROTOCOL B-1 <br /> Assoda#es <br />