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Newmont. CRIPPLE CREEK & VICTOR <br /> PO Box 191 <br /> CRIPPLE CREEK&VICTOR 100N• Street <br /> Victor CO 80860 <br /> in the choke, if the control box is connected, adjust the flow rate using the nob on <br /> the control box. The optimum flow rate should allow at least three well volumes <br /> to be purged without purging the well dry. <br /> After sampling turn off the generator and close the gas valve. Disconnect the <br /> electrical connections from the sample pump, control box, and generator. Ensure <br /> the sampling pump's electric connection and wiring is inside the well casing and <br /> secured below the well cap. <br /> 10.2. Field Deployable Submersible Pump <br /> When a dedicated electric powered sampling pump is not available for use at the <br /> monitoring well to be sampled, a field deployable submersible pump is to be used. <br /> Currently CC&V uses a Geotech Environmental SS Geosub pump or Grunfos Redi- <br /> Flo 2 SS portable submersible pump for sample collection. Each submersible <br /> pump has its own external controller to manage the pump. To use the pump <br /> • follow the instructions and training provided to you, if you have not received the <br /> necessary or adequate instruction contact your supervisor to receive the <br /> necessary training. Insure that all electrical connections are solid, and that the <br /> necessary grounding is in place. Operate the necessary power equipment <br /> (generator or inverter) to power the controller to collect the sample. <br /> After sampling turn off the generator and close the gas valve (if used). Disconnect <br /> the electrical connections from the sample pump, control <br /> box, and generator. <br /> 10.3. Bailer <br /> The hand bailer is a cylindrical tube, constructed of either plastic or metal, with a <br /> ball valve at the bottom. The ball valve allows water into the tube while the bailer <br /> is descending and closes, thus trapping water, when the bailer is ascending. <br /> The bailer is to be decontaminated as described above, before and after use. The <br /> bailer is lowered slowly into the well to avoid turbidity with a nylon rope, or a <br /> stainless steel mesh rope, which is decontaminated after each use. Care must be <br /> • taken to ensure that the rope does not come into contact with the ground while <br /> sampling, to avoid any possible contamination. A disposable bailer must be used <br /> Department THIS DOCUMENT IS UNCONTROLLED IN HARD COPY FORMAT Doc Id: <br /> SER Date of This Issue--/--/-- Date of Next Review:--/--/-- Page 29 of 73 <br />