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ME:L-TECH DEL-TECH GEOTECHNICAL SUPPORT SERVICES, INC. MONITORING WELL FIELD LOG 2026 SAMPLE LOCATION/AMW- 4 DATE: 2/3/2026 PROJECT NAME: FORWARD LANDFILL ANALYSIS PERFORMED: SEE CHAIN OF CUSTODY ADDRESS: 9999 S AUSTIN ROAD SAMPLE TIME: 12:32 CITY,STATE: MANTECA,CA. SAMPLE CONTAINERS: SEE CHAIN OF CUSTODY SITE CONTACT: OSVALDO CORDERO PRESERVATIVES: SEE CHAIN OF CUSTODY CONSULTANT: ARCADIS I LAB.ANALYSIS BY: PACE ANALYTICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PROJECT MANAGER: ARCADIS MONUMENT: STEEL POST SAMPLER: DEL-TECH/MANUEL MORENO WELL CASING MATERIAL: PVC SIGNED: WELL CASING DIAMETER: 2" / 0.1632 SAMPLE MEDIA: GROUNDWATER P.I.D.READING/ODOR: N/A NONE TOP OF CASING ELEVATION: MSL COLOR. DEPTH TO WATER: feet.100th's 60.72 FEET CALC.PURGE VOLUME: 4.11 GALLONS DEPTH OF WELL: feet.100th's 85.88 FEET TOTAL VOLUME PURGED: 15.00 GALLONS STANDING WATER COLUMN: 25.16 FEET DEPTH OF PUMP: — 78 FEET FIELD PARAMETERS TIME FULL WET ACTUAL DRAW PUMPING pH E.C. TEMP. DISSOLVED TURBIDITY WELL CASING GALLONS DOWN RATE OXYGEN VOLUME (GAL.) PURGED (D.T.W.) (GPM) (units) (us/cm) (Celsius) (PPM) (N.T.U.) 12:11 4.11 0.0 12:16 5.0 60.83 1.0 7.87 488 17.6 7 12:21 5.0 60.83 7.78 487 17.7 9 12:26 5.0 60.90 7.75 485 17.8 8 12:31 5.0 60.95 7.71 482 17.8 7 12:32 SAMPLED PURGE METHOD: STANDARD WATERRA INERTIAL PUMP. SAMPLE METHOD: DEDICATED WATERRA TUBING. D.T.W.AFTER PURGE: D.T.W.AT SAMPLE TIME: 60.95' WELL INTEGRITY: CAP&SEAL ARE SECURE. WELL LOCATION: SEE SITE MAP. REMARKS: WEATHER: PARTLY CLOUDY/COOL WIND: NONE QUALITY CONTROL: WATER DEPTHMETER&MONITORING PROBE CLEANED WITHALCONOX SOAP AND WATER. NEWNITRILE GLOVES. CONTAINMENT: NONE/TO THE GROUND SURFACE. INSTRUMENTATION: MYRON 6P MULTI METER HANNA TURBIDITY METER HERON D.T.W.METER