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N®R RM <br /> M•V <br /> Harding Lawson Associates <br /> tight cap to minimize the intrusion of surface water. Well <br /> locations are shown on Plate 1. <br /> ,�. MW-12, MW-13 and MW-14 were completed slightly above grade <br /> c , <br /> and are protected by steel protection casings. MW-9, MW-10, MW-- <br /> " 11 and MW-15 were completed slightly below grade and are pro- <br /> x <br /> tected by water-tight, traffic-rated, steel casings finished <br /> }„ flush to grade. Well construction diagrams are contained in <br /> Appendix B. <br /> - D. Monitoring Well Development and Sampling <br /> r-! <br /> ;M1 Betweer.;July 19 and 22, 1988, HLA developed MW-9 through MW- <br /> ,.! 15 and purged MW-1 through MW-8 using either a .submersible or <br /> ! centrifugal pump. Development was considered complete when the <br /> a <br /> .discharge water from the well appeared clear and the pH, conduc- <br /> tivity, and temperature had stabilized. Well development and <br /> Lj purging data are in Appendix C <br /> Upon completion of development/purging, each well was <br /> sampled using a stainless steel bailer. Samples were decanted <br /> Ve: into 40-ml VOA vials and stored in cooled, insulated containers <br /> for transport to the chemical testing laboratory. Chain-of- <br /> 171 <br /> !y custody records were maintained for each sample. : <br /> All fluids produced during these operations were stored in <br /> �-= 55- allon. metal drums <br /> g pending the results of chemical analyses. ! <br /> The disposal of these drums was arranged for by Southland. An. <br /> interim report discussing this work was issued to Southland on <br /> .�� August 25, 1988. i <br /> _..' 9 <br /> .�r <br />