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PARKER ENVIRONMENTAL SERVICES <br /> LOG OF WELL SAMPLING ACTIVITIES <br /> Cheaper Store#37 <br /> Well Identification MW-7 Project Name 15 East Grantline Road,Tracy CA Date 6127199 <br /> Sampled by James Lowe Weather Conditions <br /> Well Location Well Casing Diameter Depth of Well Casing 1470 <br /> Measuring Point Top of PVC Casing Initial Depth to Water 592 Final Depth to Water Not measured <br /> Casing Volume(1 vol 13 vol) 1 43/429 Well Borehole Volume <br /> Purging Method Centrifugal Pump/Penstaltic Pump Sampling Method Penstattic Pump <br /> Grundfos Submersible Pump X Grundfos Submersible Pump X <br /> Centrifugal Pump/ES-60 Submersible Teflon Bailer <br /> ES-40!-60 Submersible Pump ES Sub Pump @<1 Umin <br /> Purging Rate See below Total Discharge 9 Casing Volumes Purged 6 29 <br /> Comments <br /> Waste Water Disposal To drum <br /> Starting Time 1003 <br /> Time Pump on <br /> Date Time Gal Purged pH T deg F Diluted S C Did Factor S C (PS/cm) Color <br /> 6/27199 x = <br /> 1010 5 815 747 x - 8290 <br /> 1011 6 814 731 x = 8340 <br /> 10 12 7 812 726 x - 8360 <br /> 1013 8 911 725 x = 8350 <br /> x - <br /> x - <br /> x = <br /> x = <br /> x = <br /> x = <br /> Sample Identtfication 92137/MW-7 Sample Time 1015 <br />• TURBIDITY ANALYSIS <br /> Finishing Time Time Analyzed NTU Value <br />