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DEL-TECH GEOTECHNICAL SUPPORT SERVICES <br /> MONITORING WELL FIELD LOG 1998 <br /> SAMPLE LOCATION/MW - 7 DATE: 2124198 <br /> PROJECT NAME: GEORGE'S SERVICE ANALYSIS PERFORMED: TPH-GAS,B T X E <br /> ADDRESS. 1600 DURHAM FERRY ROAD SAMPLE TIME: 1638 <br /> CITY,STATE TRACY,CA SAMPLE CONTAINERS. 2 V O A's& 1 B B <br /> SITE CONTACT. GEORGE OR MAE PRESERVATIVES: HCL <br /> CONSULTANT GEOLOGICAL TECHNICS INC LAB.ANALYSIS BY: S1 ERWOOD <br /> PROJECT MANAGER RAY OR X411M MONUMENT FLUSH <br /> SAMPLER I n DEL-TECH WELL CASING MATERIAL PVC <br /> SIGNED. WELL CASING DIA 2" 1 01632 <br /> SAMPLE MED GROUNDWATER P.LD READING I ODOR. 0 PPM MUSTY <br /> TOP OF CASING ELEVATION MSL COLOR. GREY <br /> DEPTH TO WATER: (feet100th's) 722 FEET CALC.PURGE VOL., 236 GAL <br /> DEPTH OF WELL: (feeL100th's) 2170 FEET TOTAL VOLUME PURGED. 75 GAL <br /> STANDING WATER COLUMN: 1448 FEET I DEPTH OF PUMP: NIA FEET <br /> FIELD PARAMETERS <br /> TIME CASING DRAW PUMPING pH E C. TEMP O.R.P ISSOLVEE TURBIDITY <br /> VOLUME DOWN RATE OXYGEN COLOR <br /> PER PURGE (DTW) (GPM/LP%I) (units) (U-HOS) (Cerus) (Mvolts) (PPWI) (N T L) <br /> 0 NIA 5 GPM 821 420 213 32 NIA GREY <br /> 25 927 382 205 34 <br /> 5 831 380 202 35 " <br /> 75 832 277 201 35 " <br /> PURGE METHOD CENTRIFUGAL PUMP <br /> SAMPLE METHOD F STAINLESS STEEL BARER <br /> D T W AFTER PURGE D T W AT SAMPLE TIME 12 48' <br /> WELL INTEGRITY CAP&SEAL ARE SECURE AMERICAN LOCK IS INSTALLED <br /> WELL LOCATION SEE SITE MAP <br /> REMARKS VERY POOR RECHARGE WELL HAS CONSISTENTLY HAD A HIGH Ph <br /> LARGE AMOUNT OF TREE ROOTS INSIDE OF CASING ALSO <br /> WEATHER OVERCAST SKIES WIND NW5 <br /> QUALITY CONTROL ALL PURGING EQUIPMENTAND SAMPLING EQUIPMENT WAS CLEANED IN THE <br /> FIELD WIT H A STEAMCLEANER&ALCONOX SOAP NEW NITRILE GLOVES <br /> CONTAINMENT D O T 17 55 GAL.STEEL DRUM OR 60 GAL POLY DRUM <br /> INSTRUMENTATION Y Sl 3560 FLOWCELL Y S I DISSOLVED OXYGEN METER <br /> SOLIMST SLOPE METER THERMODINE 580B P I D <br /> KECK INTERFACE ITER TURBIDITY METER <br />