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Well Monitoring Form <br /> Client : Pestana Trust <br /> Site Address : 2360 East Street , Tracy , CA <br /> Date: March 11 , 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 . 56 ' Monitoring Well : MW-2 <br /> Depth to Water: 6 . 81 ' Purge Method: Disposable Bailer <br /> (bundle of 3) <br /> Water Column <br /> Height . . . . 12 . 75 ' x 0 . 66 = 8 . 42 gallons (1 well volume) <br /> 3 x 8 . 42 gallons = 25 2 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 /> 12 . 50 0 71 . 2 7 . 15 2 . 89 <br /> 12 . 58 8 . 5 70 . 9 7 . 16 2 . 89 <br /> 13 : 09 17 .0 70 . 9 7 . 18 2 . 92 <br /> 13 : 18 25 . 5 70 . 8 7 . 21 2 . 88 <br /> Contaminant Odor: Moderate hydrocarbon-like <br /> Turbidity Level : Low after 15 gallons purged <br /> Sheen on Water : No <br /> Time of Sample Collection - 13 : 20 <br /> Witnessed by : No Witness <br /> Sampler ' s Signature : <br />