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WELL PURGING AND SAMPLING LOG <br /> Project Name BFS-STOCKTON Date 5111100 <br /> Project Number 1IST-3 Well Number MW-2 <br /> Location Stockton Recorded by A Drummond <br /> WELL PURGING, Depth to Water 1727 <br /> Purge Method 1"bailer Total Depth 350 <br /> Decon Method Triple rinse with DI water _ Water Column 1776 <br /> I <br /> Purge Volume 2"casing(0 16 gallft) 4"casing(0 65 gallft) 6"casing(1 47 gallft) <br /> 3 casing volumes x 016 gal/ft x 1776 ft = 8 3 gallons <br /> DTW 1 PURGED TEMP COND TURBIDITY <br /> TIME (feet) (gal ) (°F) (Rs/cm) pH (NTUs) NOTES <br /> 1325 1727 0 752 937 729 318 Slightly cloudy <br /> 1335 1729 2 738 966 —T-30-- 300 Odor <br /> 1340 1729 4 760 886 725 355 Odor <br /> 1350 17 29 6 759 926 742 350 Slightly cloudy, slight odor <br /> 1355 1729 8 766 935 737 355 Slight odor <br /> 1405 1729 10 767 937 735 291 <br /> 1415 -- -- -- -- -- -- Collected Sample MW-2 <br /> I <br /> Total Purged Volume (gallons) 10 Number of Casing Volumes 35 <br /> WELL SAMPLING <br /> Sample Method New dts osable bailer with new nylon line <br /> Decon Method Not applicable <br /> Sample Container 40-m1 glass VOA vials wl HCI <br /> Sample Identification MW-2 <br /> Verified Hydac and La Motte 2020 turbidity meter calibration <br /> Co R I ")N <br /> [S BMSTOCKTONT00002 XLS] 5112!00 <br />