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• Well Monitoring Form <br /> Client : Pestana Trust <br /> Site Address : 2360 East Street , Tracy , CA <br /> Date : March 31 , 1995 <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 . 02 ' Purge Method BK Hand Pump <br /> Water Column <br /> Height . . . . 12 60 ' x 0 . 66 = 8 . 32 gallons ( 1 well volume) <br /> 3 x 8 . 32 gallons = 24 . 96 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) (umhos/cm) <br /> --------------------------------------------------------- <br /> 1545 0 66 4 7 20 2 . 78 <br /> 1549 8 33 66 6 7 . 21 3 07 <br /> 1553 16 , 66 66 . 9 7 . 27 3 . 14 <br /> 1555 25 00 66 7 7 26 3 19 <br /> Contaminant Odor : Odor noted upon removal of well cap . <br /> Purge water malodorous 5-25 gallons . <br /> Turbidity Level : Low to Moderate <br /> Sheen on Water : No <br /> Time of Sample Collection. 1557 <br /> Witnessed by No Witness <br /> * Sampler ' s Signature . `AIV -C—. RAW <br /> • * Mr Don Johnson assisted with sampling <br />