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Geological Tecluiics, lac. <br /> Groundwater Monitoring Field Log <br /> Project Name: City of Escalon(WDR) Well 1.D.: MW-1 <br /> Project No.: 894.2 Date: 8/2/2011 <br /> Project Location: 25100 River Road <br /> Escalon,CA Samples sent to: Denele Labs <br /> Cumulative <br /> Volume Purged <br /> Time (gal) Temp C. EC(µs/cm) pH ORP(millivolts) DO (mg/L) Remarks <br /> 10:40 0 17.35 927 6.75 -85.5 6.65 Light brown, mild odor,few sediments <br /> 10:50 9.5 17.28 917 6.47 -112.1 0.25 Light brown, mild odor,few sediments <br /> 11:00 19 17.25 891 6.49 -113.5 0.30 Light brown, mild odor,few sediments <br /> 11:10 28.5 17.30 886 6.45 -119.2 0.32 Light brown, mild odor,few sediments <br /> 11:15 Collected samples <br /> Purge Method: Z Dedicated Waterra ❑Centrifugal pump with dedicated tubing ❑Other <br /> Pumping Rate: 0.95 gal/min <br /> Well Constructed TD(tt): 56.18 Sample Containers used: 3 #VOAs X preserved_non-preserved <br /> Well TD(ft): 56.19 1 #polys 100 ml X preserved_non-preserved <br /> Silt Thickness(ft): -0.01 1 #polys 250 ml preserved X non-preserved <br /> Initial DTW(ft): 41,82 1 #polys 1L preserved X non-preserved <br /> Water column height (tty 14.37 Notes: <br /> One casing volume(gal): 9.34 <br /> "'Final DTW(ft): 41.95 Sampled By: E.Nona .� <br /> Casing diameter (in): 4" <br /> Sample Method: Waterra O Bailer❑ Other ❑ =measured =@ sampling Purged Water Drummed: ❑ Yes ❑x No <br /> Gallons per foot of casing. 2"dia.=0.17, 3°dia.=0.38 4°dia.=0.65, 5°dia.=1.02, 6"dia.=1.48 No.of Drums: 0 <br /> K:Wobs\C Jobs\COE wdr 8942\GW M Field Logs\11\3rd Qtr 11 8/3/2011 <br />