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� <br /> PARKER ENVIRONMENTAL SERVICES <br /> LOG OF WELL SAMPLING ACTIVITIES <br /> Cheaper Store#37 <br /> Well Identification MW-7 Prolect Name 15 East Granlline Road Tracy CA Date 02113/99 <br /> Sampled by James Lowe Weather Conditions <br /> Well Location Well Casing Diameter 2-inch Depth of Well Casing 1470 <br /> Measuring Point Top of PVC Casing Initial Depth to Water 503 Final Depth to Water Not measured <br /> Casing Volume(1 vol 13 vol) 1 5814 73 Well Borehole Volume <br /> Purging Method Centrifugal Pump/Penstaitrc Pump Sampling Method Peristaltic Pum <br /> Grundfos Submersible Pump _ _Grundfos Submersible Pump <br /> CentrifugMPump/ES-60 Submersible Teflon Bailer <br /> ES-40/-60 Submersible Pump X ES Sub Pump @<1 L/min X <br /> Purging Rate See below Total Discharge 65 Casing Volumes Purged 409 <br />• Comments <br /> Waste Water Disposal To drum <br /> Starting Time 1355 <br /> Time Pump on <br /> Date i Time Gal Purged pH T deg F Diluted S C Dill Factor S C (PS/cm) Color <br /> 0223/99 x = <br /> 1402 500 812 660 x - 2470 <br /> 1404 550 808 657 x = 2450 <br /> 1406 600 805 665 x - 24W <br /> 1407 650 806 669 x = 2510 <br /> x - <br /> x = <br /> x - <br /> x - <br /> x - <br /> x - <br /> Sample Identification 911371MW-7 Sample Time 1408 <br /> TURBIDITY ANALYSIS <br /> Finishing Time Time Analyzed NTU Value <br />