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Geological Techatcs, l&u. <br /> Groundwater Monitoring Field Log <br /> Project Name: City of Escalon(WDR) Well I.D.: MIW-7 <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 /> 13:25 0 26.16 990 6.41 17.3 5.09 Clear, mild odor, no sediments <br /> 13:30 1.25 19.87 1009 6.41 -63.7 0.71 Clear, mild odor, no sediments <br /> 13:35 2.50 19.84 981 6.25 -53.9 0.41 Clear, mild odor, no sediments <br /> 13:40 3.75 19.83 941 6.27 -47.3 0.32 Clear, mild odor, no sediments <br /> 13:45 Collected samples <br /> Purge Method: ❑x Dedicated Waterra ❑Centrifugal pump with dedicated tubing ❑Other <br /> Pumping Rate: 0.25 gallmin <br /> Well Constructed TD(ft): 45.00 Sample Containers used: 3 #VOAs X preserved non-preserved <br /> "Well TD(n): 43.23 1 #polys loom[ X preserved non-preserved <br /> Silt Thickness(ft): 1,77 1 #polys 250 ml preserved X non-preserved <br /> Initial DTW(ft): 35.86 1 #polys 1Lpreserved X non-preserved <br /> Water column height (ft): 7.37 Notes: <br /> One casing volume(gal): 1.25 <br /> Final DTW(ft): 35.90 Sampled By: E.Nona <br /> Casing diameter (in): 2" <br /> Sample Method: Waterra 0 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: <br /> K:\Jobs\C Jobs\COE wdr 8942\GWM Field Logs\11\3rd Qtr 11 8/3/2011 <br />