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i DEL-'TECH GEOTECHNICAL SUPPORT SERVICES MONITORING WELL FIELD LOG 1998 SAMPLE LOCATION/MW - 7 DATE. 5129198 PROJECT NAME. GEORGE'S SERVICE ANALYSIS PERFORMED TPH-GAS, B T X E ADDRESS. 1600 DURHAM FERRY ROAD SAMPLE TIME: 1638 CITY.STATE. TRACY,CA SAMPLE CONTAINERS. 2 V O A s & I B B SITE CONTACT GEORGE OR MAE PRESERVATIVES: HCL CONSULTANT GEOLOGICAL TECHMCS INC LAB.ANALYSIS BY: SHERWOOD PROJECT MANAGER RAY OR MIKE MONUMENT FLUSH SAMPLER- DEL-TECH WELL CASING MATERIAL PVC SIGNED: WELL CASING DIA 2" / 01632 SAMPLE MEDCO GROUNDWATER P.I.D.READING/ODOR: 0 PPM NONE TOP OF CASING ELF ATION MSL COLOR CLEAR DEPTH TO WATER (feet100th's) 952 FEET CALC.PURGE VOL- 198 GAL DEPTH OF WELL: (feet.lWth's) 2170 FEET TOTAL VOLUME PURGED: 6 GAL STANDING WATER COLUMN- 1218 FEET I DEPTH OF PUMP: N/A FEET FIELD PARAMETERS lie TIME CASmG DRAW PUMPING pH E C. TEMP ORP SOL VETURBIDITY VOLL-ME DOWN RATE OCOLOR PER PURGE (D T W) (Gp%vL,pW (units) (UmMHOb'n (Celsius) (Nlvolts) (NTL') 1558 0 NIA 5 GPM 163 2280 217 1 -31 NIA CLEAR 1600 2 821 2400 22 -6 1602 4 815 2650 25 1 -30 1629 6 794 2160 214 -51 PURGE METHOD CENTRIFUGAL PUMP SAMPLE METHOD 1 STAINLESS STEEL BAILER D T W AFTER PURGE D T W AT SAMPLE TIME WELL INTEGRITY CAP&SEAL ARE SECURE AMERICAN LOCK IS INSTALLED WELL LOCATION SEF-SITE MAP REMARKS VERY POOR RECHARGE WENT DRY ON SECOND VOLUME LARGE AMOUNT OF TREE ROOTS INSIDE OF WELL CASING ' WEATHER CLEAR WIND 1NWI0 QUALITY CONTROL ALL PURGING E UIPMENT AND SAMPLING EQUIPMENT WAS CLEANED IN THE FIELD WITH A STEAMCLS4NFR do ALCONOX SOAP NEW NITRILE GLOVES CONTAINMENT D O T 17 55 GAL STEEL DRUM OR 60 GAL POLY DRUM INSTRUMENTATION Y SI 3560 FLOWCELL Y S L DISSOLVED OXYGEN NEIL SOLINIST SLOPE NER THEILMODINE 580B P I D KECK INTERFACE METER T tMH) I'Y NffiTER