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MONITORING I PROTOCOL <br /> ' MEASURE AND RECORD DEPTH TO WATER <br /> AND WELL TOTAL DEPTH <br /> CALCULATE PURGE VOLUME BY <br /> ' USING THE FOLLOWING EQUATION: <br /> P = n r2h x 7.48 x 4 <br /> 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 WELL EQUAL TO <br /> THE CALCULATED PURGE VOLUME WHILE <br /> ' MONITORING GROUND-WATER STABILIZATION <br /> INDICATOR PARAMETERS <br /> (pH, CONDUCTIVITY, TEMPERATURE) <br /> AT INTERVALS OF ONE CASING VOLUME. <br /> WELL EVACUATED TO PRACTICAL LIMITS <br /> OF DRYNESS BEFORE REMOVING <br /> CALCULATED PURGE VOLUME <br /> NO YES <br /> FINAL TWO SETS OF GROUND-WATER <br /> ' STABILIZATION INDICATOR PARAMETER <br /> MEASUREMENTS MEET THE FOLLOWING WELL RECHARGES TO A LEVEL <br /> CRITERIA: SUFFICIENT FOR SAMPLE <br /> pH = t 0.1 pH units COLLECTION WITHIN 24 HOURS <br /> ' COND. = 10 % OF EVACUATION TO DRYNESS. <br /> TEMP. = t 1.0 OF <br /> ' YES NO <br /> YES NO <br /> WELL PURGING CONTINUE PURGING; FIELD TEST FIRST RECORD WELL <br /> CRITERIA MET; EVACUATE ADDITIONAL RECHARGE WATER FOR AS DRY FOR <br /> PROCEED TO CASING VOLUME OF INDICATOR PARAMETERS, PURPOSES OF <br /> WELL SAMPLING WATER, MONITORING THEN PROCEED TO WELL SAMPLING. <br /> ' INDICATOR PARAMETERS SAMPLING. <br /> FOR STABILITY. <br /> ' FIGURE <br /> ON <br /> E M u : <br /> MONITORING WELL PURGING PROTOCOL <br /> 1 <br /> Associates <br />