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1 <br /> MONITORING WELL PURGING PROTOCOL <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> WT W <br /> CHECK FOR FLOATING PRODUCT <br /> YES <br /> NO <br /> MEASURE AND DOCUMENT E71,r' <br /> TE PURGE VOLUME BY <br /> FLOATING PRODUCT THICKNESS FOLLOWING EQUATION <br /> DO NOT SAMPLE WELL FOR = n r�x 7 48 x 3 <br /> DISSOLVED CONSTITUENTS ted purge volume(gallons) <br /> f well casing to feetf 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 /> Y£S <br /> INAL TWO SETS OF GROUNDWATER <br /> TABILIZATION INDICATOR PARAMETER <br /> 1EASUREMENTS MEET THE FOLLOWING <br /> RITERIA WELL RECHARGES TO A LEVEL <br /> pH =± 1 PH units SUFFICIENT FOR SAMPLE <br /> GOND =± 10% COLLECTION WITHIN 24 HOURS <br /> TEMP =t 1 0 °F OF EVACUATION TO DRYNESS <br /> YES NO <br /> YES NO <br /> WELL PURGING CONTINUE PURGING, EVACUATE INDICATOR FIELD TEST FIRST <br /> CRITERIA MET, ADDITIONAL CASING VOLUME RECHARGE WATER FOR CORD WELL <br /> PROCEED TO OF WATER MONITORING PARAMETERS, PUPU DRY FOR <br /> RPOSES OF <br /> WELL SAMPLING INDICATOR PARAMETERS FOR THEN PROCEED TO WELL <br /> STABILITY SAMPLING <br /> SAMPLING <br /> 00� C M C O A Nr FIGURE <br /> C MONITORING WELL PURGING PROTOCOL <br />� A-1 <br />