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�1 MONITORING WELL PURGING PROTOCOL <br /> 0 MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> OWT <br /> CHECK FOR FLOATING PRODUCT <br /> YES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS USING THE FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR P= n rZ x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS where <br /> P=calculated puree 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 /> 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 YES <br /> I INAL +%ti0SETS OF'GROUNDWAIER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING <br /> CRITERIA WELL RECHARGES TO A LEVEL <br /> pH =:i:0 1 pH units SUFFICIENT FOR SAMPLE <br /> GOND =± 10% COLLECTION WITHIN 24 HOURS <br /> TEMP =t 1 0 OF OF EVACUATION TO DRYNESS <br /> YES NO 4 <br /> 5 NO <br /> WELL PURGING CONTINUE PURGING EVACUATE 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 SAMPLING <br /> FIGURE <br /> #00 EMCON MONITORING WELL PURGING PROTOCOL A-1 <br />