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PARKER ENVIRONMENTAL SERVICES <br /> LOG OF WELL SAMPLING ACTIVITIES <br /> Cheaper Store#37 <br /> Well Identification MW-4 Project Name 15 East Grantline Road,Tracy CA Date 02123/99 <br /> Sampled by James Lowe Weather Conditions <br /> Well Location Well Casing Diameter 2-rnch Depth of Well Casing 2390 <br /> Measuring Point Top of PVC Casing Initial Depth to Water 481 Final Depth to Water Not measured <br /> Casing Volume(1 volJ 3 vol) 3111934 Well Borehole Volume <br /> Purging Method Centrifugal PumplPenstaltic Pump Sampling Method Peristaltic Pump <br /> Grundfos Submersible Pump _ Grundfos Submersible Pum <br /> Centrifugal Pum S-60 Submersible Teflon Bailer <br /> ES-401-60 Submersible Pump X ES Sub Pump <1 Umin X <br /> Purging Rate See below Total Discharge 11 00 Casing Volumes Purged 354 <br /> Comments <br /> Waste Water Disposal To drum <br /> Starting Time 1442 <br /> Time Pump on <br /> Date Time Gal Pur ed pH Tdeg F Diluted S C Dil Factor S C PS/cm Color <br /> 02123/99 x = <br /> 1454 950 790 683 x = 2180 <br /> 1455 1000 792 684 1 x - 2180 <br /> 1457 1050 791 683 x - 2170 <br /> 1458 1100 792 682 x - 2170 <br /> x - <br /> x <br /> x = <br /> x - <br /> x - <br /> x = <br /> Sample identification 91/37/MW-4 Sample Time 14 59 <br /> TURBIDITY ANALYSIS <br /> Finishing Time Time Analyzed NTU Value <br />