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• Well Monitoring Form <br /> Client : Pestana Trust <br /> Site Address . 275 Grant Line, 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 .80 ' Monitoring Well : MW--2 <br /> Depth to Water: 7 . 10 ' Purge Method: Disposable Bailer <br /> Water Column <br /> Height. . . . . . 12 . 70 ' x 0 . 17 = 2 .16 gallons (1 well volume) <br /> 3 x 2 .16 gallons = 6 . 48 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 /> 11 : 24 0 66. 5 8 . 14 3 . 30 <br /> 11 . 28 2 . 25 67 .0 7 . 93 3 . 58 <br /> 11 : 34 4. 50 66. 2 7 . 85 3 . 63 <br /> 11 : 39 6 .75 66 . 3 7 . 86 3 . 62 <br /> Contaminant Odor: Slight <br /> Turbidity Level ' Slightly turbid. Purge water brownish- <br /> yellow in color 0 to 2 . 5 gallons , <br /> becoming clear 2 . 5 to 6 .75 gallons <br /> Sheen on Water : No <br /> Time of Sample Collection: 11 : 40 <br /> Witnessed by : No Witness <br /> * Sampler' s Signature: -J UW <br /> . * Mr. Don Johnson assisted with sampling <br />