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ii <br /> o The remaining annular space will be filled to the ground <br /> surface with a bentonite/cement grout. The grout will <br /> be placed in the annular space using the tremmie method <br /> of placement, and will be allowed to set for 24 hours <br /> prior to well development. <br /> o Wells will be completed at grade with a locking cover <br /> and Christie box, which will be grouted in place at the <br /> ground surface to complete installation. <br /> o The elevation of the top of the well casing will be <br /> surveyed to the nearest 0.01 foot by a licensed surveyor. <br /> o Development water, decontamination rinse dater, and <br /> cuttings will be collected and contained in a baker tank <br /> or by other appropriate means for onsite treatment <br /> through biodegradation or other recognized treatment <br /> process. <br /> The proposed well construction details of the monitoring wells <br /> are shown in Figure 3, <br /> 2.2.5 Well beveiopmgp_t <br /> The purpose of well development is two-fold: to repair <br /> formation damage caused by drilling so that natural hydraulic <br /> properties are restored, and to develop better flow of water to <br /> the well. Wells will be developed using a combination of bailing, <br /> swabbing, and pumping with a centrifugal or submersible pump until <br /> sediment fee water is pumped from the well. <br /> 2.2.6 Water Level Measurem�t <br /> Static water level measurements for each monitoring well, new <br /> and existing, will be taken and ceferenced to the top of the <br /> casing. The wetted tape method or electric sounder method will be <br /> used to take the measurement to the nearest 0.01 foot. sounder <br /> cable or tape will be decontaminated before and after each well. <br /> Should floating product be found on the surface of the water table <br /> during the measurement, oil/water indicator pastes or an oil/water <br /> interface probe will be used to determine the location of the water <br /> table: and the depth of the floating product. <br /> 2.2.7 Grgund Water Sample Col a t'o <br /> Prior to ground water sampling, specific conductance, <br /> temperature and pH will be measured. A pH meter with a combination <br /> gel-filled electrode or equivalent, will be used for field pH <br /> - determinations. A combination electrical conductivity-temperature <br /> or equivalent measuring devices will be used for determination of <br /> conductivity and temperature. All instruments will be calibrated <br /> LD01.064 <br /> 6 <br />