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RESPEC ULLY U TT <br />°rArvi5ilom <br />rinvfino--4-rui <br />Analytical Laboratory <br />Metropolitan Stevedore <br />P.O. BOX 986 <br />Stockton CA 95201 <br />MONITOR WELL FIELD DATA REPORT <br />MONITOR WELL SAMPLING INFORMATION <br />Sample ID: 22828-02 <br />Project Name: Monitoring Well 4 <br />Date Sampled: 6/23/2003 <br />Time Sampled: 12:14 PM <br />Sampler Name: Jonathan Le <br />MONITOR WELL FIELD DATA MEASUREMENT <br />-I"sing Diameter: 4 inches <br />II Volume: 10.1 Gallons <br />Well Depth: 227" <br />Well Water Depth: 7'2" <br />Purge Vol 1: 10.1 Gallons <br />PH(I): 4.47 <br />ECI (uS/cm) (1): 3050 <br />02 (mg/L) (I): 0.85 <br />Purge Vol 2: 10.1 Gallons <br />PH (2): 7.32 <br />ECI (uS/cm) (2): 3010 <br />02 (mg/L) (2): 0.76 <br />Purge Vol 3: 10.1 Gallons Purge Vol 4: 10.1 Gallons <br />7.15 pH (4): 7.14 pH (3) <br />ECI (uS/cm) (3): 3020 <br /> <br />ECI (uS/cm) (4): 3021 <br />1.06 1.07 02 (mg/L) (3): 02 (mg/L) (4): <br />Field Note: Each Well was purged of a minimum of three casing volumes and until stabilization <br />measurement of pH and Electrical Conductivity (pH constant within 0.1 units, conductivity with <br />10% of previous measurement). The electrical conductivity/pH meter was calibrated prior to <br />use. After completion of purging, ground water were drawn using a disposable bailer (new bailer <br />for each well) <br />Jonathan H. V. Le, Laboratory Director <br />aursday, July 31, 2003 Page 1 of 1