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DEL-TECH GEOTECHNICAL SUPPORT SERVICES <br /> MONITORING WELL FIELD LOG 2004 <br /> I <br />' SAMPLE LOCATION/MW- 12 DATE: 7/19/2004 <br /> PROJECT NAME DARPETRO,INC ANALYSIS PERFORMED SEE CHAIN OF CUSTODY <br />' ADDRESS 749 E CHARTER WAY SAMPLE TIME 1015 <br /> CITY,STATE STOCKTON,CA SAMPLE CONTAINERS 4 VOA'S <br /> SITE CONTACT PRESERVATIVES HCL <br /> CONSULTANT CALIFORNIA GEOPHYSICAL LAB ANALYSIS BY SHERWOOD LABS <br /> 1 <br /> PROJECT MANAGER JOHN CUSSEN MONUMENT FLUSH <br /> SAMPLER DEL-TECH WELL CASING MATERIAL PVC <br />' SIGNED WELL CASING DIA. 2" 1 0 1632 <br /> SAMPLE MEDIA GROUNDWATER P I D READING/ODOR N/A MUSTY <br /> TOP OF CASING ELEVATION MSL COLOR GREY <br />' DEPTH TO WATER feet 100th's 38 88 FEET CALC PURGE VOL 328 GAL <br /> DEPTH OF WELL feet 10001s 58 97 FEET TOTAL VOLUME PURGED 984 GAL <br /> STANDING WATER COLUMN 2009 FEET DEPTH OF PUMP 56 FEET <br /> FIELD PARAMETERS <br /> TIME CUMULATIVE DRAW PUMPING pH E C TEMP ORP DISSOLVED TURBIDITY <br /> CASING VOLUME DOWN RATE OXYGEN COLOR <br /> PER PURGE (D T W) (GPM/LPM) (units) (UmMHOS) (Ceisius) (Mvolts) (PPM) (N T U) <br />' 0 NIA 5 GPM 718 2223 234 1 3 052 640 <br /> 328 717 2218 227 92 078 330 <br /> 656 717 2234 224 64 044 300 <br /> 9 84 717 2231 223 63 059 110 <br /> PURGE METHOD DEDICATED WATERRA PUMP <br /> SAMPLE METHOD DEDICATED WATERRA PUMP <br /> D T W AFTER PURGE D T W AT SAMPLE TIME 39 30' <br />' WELL INTEGRITY CAP&SEAL ARE SECURE <br /> WELL LOCATION SEE SITE MAP <br /> REMARKS <br />' WEATHER CLEAR/HOT WIND NONE <br /> QUALITY CONTROL ALL PURGING EQUIPMENT AND SAMPLING E UIPMENT WAS CLEANED IN THE <br /> FIELD WITH A STEAMCLEANER&ALCONOX SOAP NEW NITRILE GLOVES <br />' CONTAINMENT D O T 17 55 GAL STEEL DRUM OR 60 GAL POLY DR UM <br /> INSTRUMENTATION Y S I 3560 FLOWCELL Y S I DISSOLVED OXYGEN METER <br /> SOLINIST SLOPE METER THERMODINE 580B P I D <br /> . KECK INTERFACE METER TURBIDITY METER <br />