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ri <br /> MONITORING WELL PURGING PROTOCOL <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> T <br /> CHECK FOR FLOATING PRODUCT <br /> WWYES NO <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS USING THE FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR P = 7z r' 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 WELT, 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 /> YES <br /> INAL TWO SETS OF GROUNDWATER <br /> TABILIZATION INDICATOR PARAMETER <br /> tEASUREMENTS MEET THE FOLLOWING <br /> RITERIA WELL RECHARGES TO A LEVEL <br /> pH =±0 1 pH units SUFFICIENT FOR SAMPLE <br /> COND =t 10 % COLLECTION WITHIN 24 HOURS <br /> TEMP =t 1 0 °F OF EVACUATION TO DRYNESS <br /> YES NO <br /> YES a:] <br /> WELT.PURGING CONTINUE PURGING EVACUATE FIELD TEST FIRST <br /> CRITERIA MET ADDITIONAL CASING VOLUME RECHARGE WATER FOR AS <br /> CORD WELL <br /> PROCEED TO OF WATER INDICATOR PARAMETERS, PURPOSES MONITORING DRY FOR <br /> OF <br /> WELL SAMPLING INDICATOR PARAMETERS FOR THEN PROCEED TO WELL <br /> STABILITYSAMPLING <br /> SAMPLING <br /> MCON <br /> FIGURE <br /> E <br /> G lel MONITORING WELL PURGING PROTOCOL A-1 <br />