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2.1 DRILLING PERMIT <br />Drilling Contractor will be responsible to secure drilling permits from San Joaquin <br />County Environmental Health Department (EHD). Copies of the drilling permit <br />will be provided after approval of work plan and once the drilling permit is issued <br />by EHD. <br />2.2 DRILLING DETAILS <br />The new GW monitoring well G-9 will be drilled and developed by a licensed <br />C-57 Drilling Contractor. A mud drill rig is anticipated to be used to drill the well. <br />If the drilling becomes difficult at the site, then a different type of drill rig will be <br />brought in. All drilling rods and tools will be steam washed before use. <br />Drilling Contractor will provide a Geologist who will observe the drilling and <br />compile a hand written drilling log. The logging method and interval is specified <br />in technical specification (Appendix A). The log would be provided to regulators <br />and inspectors on-site upon request. Drilling spoils will be stockpiled near the <br />boring and dispersed near the vicinity of the boring after well installation. <br />2.3 UNCOMPLETED BORINGS <br />If the well boring is not drilled to depth by the end of a working day, the drilling <br />mud will be left inside the auger. <br />2.4 ABANDONED BORING <br />If the well boring is difficult to drill or does not encounter groundwater, then the <br />boring will be abandoned as determined by the field Geologist. A new boring will <br />be drilled afterwards. Abandoned borings will be grouted with neat cement. <br />• •► ►Ilr • ►� ►'1 <br />The new GW monitoring well G-9 will be constructed immediately after drilling. <br />Well construction will be according to the well detail (Figure 2) and to the <br />technical specifications (Appendix A). The well will be developed after well <br />installation according to the well development specifications (Appendix A). <br />The well's top of casing and well location will be surveyed by a licensed Land <br />Surveyor with a horizontal accuracy of 0.1 foot and vertical accuracy of 0.01 foot. <br />A well drilling and construction log will be compiled by the Geologist with soil <br />lithology and as -built information. <br />Work Plan- NC -Groundwater Monitoring Well Installation San Joaquin County <br />Department Of Public Works <br />2 Solid Waste Division <br />