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DEL-TECHGEOTECI-INICAL SUPPORT SERVICES, INC. MONITORING WELL FIELD LOG 2012 SAMPLE LOCATION 1MW- 9 DATE: 3/23/2012 PROJECT NAME: OLIVAREZ PROPERTY ANALYSIS PERFORME,D: SEE CHAIN OF CUSTODY ADDRESS: 300 S.CALIFORNIA STREET SAMPLE TIME: 15:28 CITY,STATE: STOCKTON,CA. SAMPLE CONTAINERS: 4 V.O.A.'s SITE CONTACT: NONE PRESERVATIVES: HCL CONSULTANT: FOOTHILL ENGINEERING LAB.ANALYSIS BY: CASTLE PROJECT MANAGER: MIKE VLACH MONUMENT: FLUSH SAMPLER: DEL-TECH/ASHLEY LIGHT WELL CASING MATERIAL: PVC SIGNED: WELL CASING DIA.: 2" / 0,1632 SAMPLE MEDIA: GROUNDWATER P.I.D.READING/ODOR- N/A MUSTY TOP OF CASING ELEVATION: MSL COLOR: CLEAR DEPTII TO WATER: (feet.100th's) 26.59 FEET CALL.PURGE VOL.: 12.71 GAL. : � TOTAL VOLUME PURGED: 39 GAL. DEPTH OF WELL: (Feet.100th's) 104.48 j STANDING WA'T'ER COLUMN: 77.89 FEET I DEPTH OF PUMP: 103 FEET FIELD PARAMETERS TIME CUMULATIVE ACTUAL DRAW PUMPING PH E.C. TEMP. O.R.P. DISSOLVED COLOR CASING VOLUME VOLUME DOWN RATE OXYGEN PER PURGE PURGED (D.T.W.) (CPAI/LPNI) (units) (us/cm) (Celsius) (Alvolts) (Ppm) 0 0 N/A 1.0 GPM 1 7.71 1866 21.2 13 1.0 CLEAR 12.71 13 .1 11 7,70 1865 20.7 -48 0.8 25.42 26 DRY 7.66 1860 20,9 -59 0.8 38.13 39 DRY 7.61 1859 20.9 -77 0.7 PURGE METIiOD: DEDICATED WATERRA TUBING&PUMP. SAMPLE METHOD: DEDICATED WATERRA TUBING, D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 89.55, WELL INTEGRITY: CAP&SEAL ARE SECURE. LOCK INSTALLED. WELL LOCATION: SITE SITEMAP. REMARKS: WELL WENT DRY/POOR RECHARGE. WEATHER: CLEAR SKIES/WARM. WIND: NW5 QUALITY CONTROL: ALL PURGING rQUIP11ENT TVAS CLEANED AS NECESSARY. DEDICATED PURGE TUBING IS INSTALLED IN EACH IVELL. CONTAINMENT: D,03, 17 55 GAL,STEEL DRUMOR 60 GAL.POLYDRUM. INSTRUMENTATION: Y.S.I.556 MULTIPROBE SYSTEM Y.S.I.DISSOLVED OXYGEN METER SOLINIST SLOPE METER 68 of 82