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PARKER ENVIRONMENTAL SERVICES <br /> LOG OF WELL SAMPLING ACTIVITIES <br /> Cheaper Store#37 <br /> Well Identification MW-8 Project Name 15 East Grandine Road Tracy CA Date 02/23/99 <br /> Sampled by James Lowe Weather Conditions <br /> Well Location Well Casing Diameter 6-4nch Depth of Well Casing 1910 <br /> Measuring Point Top of PVC Casing Initial Depth to Water 501 Final Depth to Water Not measured <br /> Casing Volume(1 vol 13 vol) 20 7116214 Well Borehole Volume <br /> Purging Method Centnfugal Pump/Penstaftic Pump Sampling Method Peristaltic Pump <br /> Grundfos Submersible Pump X Gnmdfos Submersible Pump X <br /> Centrifugal Pump/ES-60 Submersible Teflon Bailer <br /> ES-401-60 Submersible Pump ES Sub Pump 0<1 L/min <br /> Purging Rate See below Total Discharge 7000 Casing Volumes Purged 338 <br /> Comments <br /> Waste Water Disposal To drum <br /> Starting Time 1103 <br /> Time Pump on <br /> Date Time Gal Purgedr794 <br /> T d F Diluted S C Dil Factor S C (PS/Cm) Color <br /> 02/23199 x = <br /> 1117 625 743 x - 2360 <br /> 11 19 6400 718 x - 2240 <br /> 11 21 650 702 x - 2250 <br /> 11 22 560 793 695 x = 2250 <br /> 1123 67 0 793 69 0 x - 2250 <br /> x - <br /> x = <br /> x - <br /> x = <br /> x = <br /> Sample Identification 91/37/MW-8 Sample Time 1124 <br /> TURBIDITY ANALYSIS <br /> Finishing Time Time Analyzed NTU Value <br />