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• Well Monitoring Form <br /> Client : Pestana Trust <br /> Site Address : 2360 East Street , Tracy, CA <br /> Date: December 2 , 1994 <br /> Agency Representative: Mr . Michael Infurna, Senior REHS <br /> San Joaquin County PHS/EHD <br /> Representative Contacted Prior to Sampling . Yes <br /> Total Well Depth: 19 . 62 ' Monitoring Well MW-1 <br /> Depth to Water : 7 . 24' Purge Method: BK Hand Pump <br /> Water Column <br /> Height . . . . . . 12 . 38 ' x 0 . 66 = 8 . 17 gallons (1 well volume) <br /> 3 x 8 . 17 gallons = 24. 5 gallons (three well volumes <br /> is typically the minimum number of <br /> gallons purged from a monitoring <br /> well prior to obtaining samples) <br /> • Time Gallons Temperature pH Conductivity <br /> Removed (Degrees F) (mmhos/cm) <br /> --------------------------------------------------------- <br /> 14: 22 0 65 .0 7 . 76 3 . 04 <br /> 14 : 25 8 . 25 65 . 5 7 . 77 3 . 04 <br /> 14: 28 16 50 66 . 2 7 . 74 3 . 25 <br /> 14: 31 24 75 66 . 2 7 . 79 3 . 26 <br /> Contaminant Odor: Odor noted upon removal of well cap <br /> Turbidity Level : Low <br /> Sheen on Water: No <br /> Time of Sample Collection: 14: 34 <br /> Witnessed by: No Witness <br /> * Sampler ' s Signature: \J YIN "' <br /> * Mr. Don Johnson assisted with sampling <br />