Laserfiche WebLink
iy <br /> MONITORING WELL PURGING PROTOCOL <br /> • EMCQN MEASURE AND RECORD DEPTH TO WATER <br /> ASSOCIATES AND WELL TOTAL DEPTH <br /> CHECK FOR FLOATING PRODUCT <br /> YE5 � <br /> MEASURE AND DOCUMENT CALCULATE PURGE VOLUME BY <br /> FLOATING PRODUCTTNICKNESS. USING THE FOLLOWING EQUATION: <br /> DOPLE WELL FOR <br /> S VED CONSTITUENTS. P.. Tr r Z h x 7 48 x 3 <br /> where: <br /> P = calcuWed purge volume(gallons) <br /> n - 3.14 <br /> r = radius of we4i casing to feet <br /> h - heignt at water column in feet <br /> EVACUATE WATER FROM WELL EQUAL TQ <br /> WELL EVACUATED TO PRACTICAL LiM1T THE CALCULATED PURGE VOLUME WHILE <br /> OF DRYNESS BEFORE REMOVING MONITORING GROUND-WATER STABILIZATION <br /> CALCULATED PURGE VOLUME INDICATOR PARAMETERS(pH. C(3NOUCTM". <br /> TEMPERATURE)AND TURBIDITY AT INTERVALS <br /> • OF ONE CAStNC3 VOLUME. <br /> NOt YES] <br /> FINAL TWO SETS OF GROUND-WATER <br /> STABILIZATION INDICATOR PARAMETER WELL RECHARGES TO A LEVEL <br /> MEASUREMENTS MEET THE FOLLOWING SUFFICIENT FOR SAMPLE <br /> CRITERIA, <br /> COLLFCT70N WITHIN 24 HOURS <br /> pH - t 0.1 pH units OF EVACUATION TO DRYNESS. <br /> COND. - t 1 o% <br /> TEMP - 10 OF <br /> YES NO <br /> YES NO <br /> FIELD TEST FIRST RECORD W9.L <br /> WELL PURGING CONTINUE PURGING; RECHARGE WATER FOR AS DRY FOR <br /> CRITERIA MET; EVACUATE ADDITIONAL INDICATOR PARAMETERS PURPOSES OF <br /> PROCEED TO CASING VOLUME OF AND TURBIDITY,THEN SAMPLING, <br /> WELL SAMPLING WATER MONITORING PROCEED TO WELL <br /> INDICATOR PARAMETERS SAMPLING. <br /> FOR STABRM. <br /> • MURE <br /> EMcoN <br /> Associates MONITORING WELL AURGING PROTOCOL [ Aml <br />