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I <br /> I <br /> MONITORING WELL PURGING PRO-TOCOL <br /> MEASURE AND RECORD DEPTH TO WATER AND <br /> WELL TOTAL DEPTH <br /> 96WT <br /> CHECK FOR FLOATING PRODUCT <br /> YES <br /> 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 purge volume(gallons) <br /> 71= 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 <br /> YES <br /> FINAL TWO SETS OF GROUNDWATER <br /> STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING <br />�RITERIA: <br /> rOF <br /> LL RECHARGES TO A LEVEL <br /> pH =± 0.1 pH units FICIENT FOR SAMPLE <br /> GOND. =-+ l0 <br /> TEMP. =:t I.0 OF <br /> LECTION WITHIN 24 HOURS <br /> VACUATION TO DRYNESS. <br /> YES NO <br /> YES NO <br /> WELL PURGING CONTINUE PURGING; EVACUATE FET FIRST <br /> CRITERIA MET; ADDITIONAL CASING VOLUME RECORD WELL <br /> WATER FOR AS DRY FOR <br /> PROCEED TO OF WATER MONITORING PARAMETERS, <br /> WELL SAMPLING" INDICATOR PARAMETERS FOR CEED TO WELL PURPOSES OF <br /> STABILITY. SAMPLING. <br /> SAMPLING, <br /> 0,0 EMcoN FIGURE <br /> MONITORING WELL PURGING PROTOCOL <br />� A-1 <br />