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PARKER ENVIRONMENTAL SERVICES <br /> LOG OF WELL SAMPLING ACTIVITIES <br /> Cheaper Store#37 <br /> Well Identification MW-3 Protect Name 15 East Grantline Road,Tracy CA Date 02123/93 <br /> Sampled by James Lowe Weather Conditions <br /> Well Location Well Casing Diameter 2-inch Depth of Well Casing 27 30 <br /> Measuring Point Top of PVC Cas:ng Initial Depth to Water 700 Final Depth to Water Not measured <br /> Casing Volume(1 vol 13 vol) 3311993 Well Borehole Volume <br /> Purging Method Centrifugal Pu enstaltic Pump Sampling Method _Peristaltic Pump <br /> Grundfos Submersible Pump Grundfos Submersible Pump <br /> Centrifugal PumpIES-60 Submersible Teflon Bader <br /> ES-401-60 Submersible Pump- X ES Sub Pump @<1 Umm X <br /> Purging(tate See below Total Discharge 1150 Casing Volumes Purged 347 <br /> Comments <br /> Waste Water Disposal To drum <br /> Starting Time 1255 <br /> Time Pump on <br /> Date Time Gal Purged pH T deg F Diluted S C DO Factor S C (HS/Cm) Color <br /> 02/23/99 x _ <br /> 1310 10 00 814 701 x — 2170 <br /> 1311 105 813 692 x — 2160 <br /> 1312 11 00 810 689 x — 2180 <br /> 1314 11 50 810 694 x = 2180 <br /> x — <br /> x <br /> x — <br /> x = <br /> x = <br /> x — <br /> Sample Identscation 911371MW-3 Sample Time 1315 <br /> TURBIDITY ANALYSIS <br /> Finishing Time Time Analyzed NTU Value <br />