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4` <br /> PkOBLEM ASSESSMENT REPORT <br /> ' Moore Petrotem, Inc. <br /> 14800 W. Frontage Road, Manteca, CA <br /> NGA Project No. 1C•90.479 <br /> Page 5 <br /> bentanite seal was placed above thu filter pack using bentonite <br /> Pellets. The annular space above the bentonite was filled with a <br /> cement-bentonite grout which extended to ground surface. Each <br /> monitoring well was completed inside a steel cristy box. <br /> Monitoring well construction details are presented on the soil <br /> boring logs shown in Appendix A. <br /> In order to remove natural aquifer fines and drill cuttings from <br /> the vicinity of the well screen, each monitoring well was developed <br /> A following construction by hand bailing. subsequent to initial well <br /> development-, several of the monitoring wells have been re--developed <br /> in order tc. increase well efficiency and reduce the turbidity of <br /> €. ground-water .-,,samples collected from the monitoring wells, <br /> Development wa`er has been stored on-site in . 55-gallon, drums. <br /> f . Table 2 presents available well development infoxnation for all <br /> wells at the site. <br /> i <br /> TABLE 2 <br /> Well Development Information <br /> G Volume of Developed Water <br /> r 1_1 D. Date (gallons) <br /> MW-3 5/11/89 40 <br /> 07/06/90 5 <br /> MW-4 5/11/89 5 <br /> 07/06/90 10 <br /> f� MW-5 12/89 16 <br /> 07/06/90 10 <br /> i ' <br /> irq MW-6 12/89 16 <br /> 07/06/90 40 <br /> i <br /> t-. <br /> MFT-7 12/89 16 <br /> 07/06/90 10 <br /> MW-8 12/89 16 <br /> 07/06/90 25 <br />