COMPLIANCE INFO_Q3 2025 MONITORING REPORT 10-30-25

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SAMPLE LOCATION / MW -15 DATE:7/30/2025 PROJECT NAME: ANALYSIS PERFORMED:SEE CHAIN OF CUSTODY ADDRESS: SAMPLE TIME:13:31 CITY, STATE: SAMPLE CONTAINERS:SEE CHAIN OF CUSTODY SITE CONTACT: PRESERVATIVES:SEE CHAIN OF CUSTODY CONSULTANT: LAB. ANALYSIS BY:PACE ANALYTICAL PROJECT MANAGER: MONUMENT:POST SAMPLER: WELL CASING MATERIAL:PVC SIGNED: WELL CASING DIAMETER:4" / 0.6528 SAMPLE MEDIA: P.I.D. READING / ODOR:N/A NONE TOP OF CASING ELEVATION:MSL COLOR:ORANGE DEPTH TO WATER: (feet.100th's)69.70 FEET CALC. PURGE VOLUME:10.12 GALLONS DEPTH OF WELL: (feet.100th's)85.20 FEET TOTAL VOLUME PURGED:30.00 GALLONS STANDING WATER COLUMN:15.50 FEET DEPTH OF PUMP:~ 84 FEET TIME CALCULATED ACTUAL DRAW PUMPING pH E. C. TEMP. DISSOLVED TURBIDITY PURGE GALLONS DOWN RATE OXYGEN VOLUME PURGED (D.T.W.)( GPM )(uS/cm) (Celsius) (PPM) (N.T.U.) 13:00 10.12 0.0 69.70 13:10 10.0 70.22 1.0 7.56 1277 21.2 355 13:15 5.0 70.22 " 7.45 1273 20.6 189 13:20 5.0 70.22 " 7.46 1267 20.6 133 13:25 5.0 70.22 " 7.44 1265 20.3 144 13:30 5.0 70.22 " 7.47 1262 20.4 108 13:31 SAMPLED PURGE METHOD:STANDARD WATERRA INERTIAL PUMP & DEDICATED TUBING. SAMPLE METHOD:WATERRA INERTIAL PUMP & DEDICATED TUBING. VOA'S COLLECTED FOR VOC ANALYSIS WERE COLLECTED FIRST AT 13:31. REMAINING SAMPLE CONTAINERS WERE COLLECTED AFTER. D. T. W. AFTER PURGE: D. T. W. AT SAMPLE TIME:70.22' WELL INTEGRITY:CAP & SEAL ARE SECURE. WELL LOCATION:SEE SITE MAP. REMARKS: WEATHER:CLEAR / COOL WIND: QUALITY CONTROL:WATER DEPTH METER & MONITORING PROBE CLEANED WITH ALCONOX SOAP AND WATER. NEW NITRILE GLOVES. CONTAINMENT:NONE / TO THE GROUND SURFACE. INSTRUMENTATION:MYRON 6P MULTI METER HANNA TURBIDITY METER HERON D.T.W. METER FIELD PARAMETERS ARCADIS ARCADIS DEL-TECH / ANTONIO MORALES GROUNDWATER MONITORING WELL FIELD LOG 2025 HAZARDOUS FORWARD LANDFILL 9999 S AUSTIN ROAD MANTECA, CA. OSVALDO CORDERO DEL-TECH GEOTECHNICAL SUPPORT SERVICES, INC.