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SOP: Monitoring <br />Well Installation <br />' Standard Operating Procedure: <br />Monitoring Well Installation <br />' I. Scope and Application <br />' Monitoring well boreholes in overburden aze typically drilled using the hollow-stem auger drilling method. <br />Other drilling methods that are also suitable for installing monitoring wells and aze sometimes necessary due to <br />site-specific geologic conditions include: drive-and-wash, spun casing, Rotasonic, dual-rotary (Bazber Rig), and <br />' fluid/mud rotary. Direct-push techniques (e.g., Geoprobe or cone penetrometer) and driven well points may also <br />be used in some cases. The drilling method to be used at a given site will be selected based on site-specific <br />consideration of anticipated drilling/well depths, site or regional geologic knowledge, type of monitoring to be <br />' conducted using the installed well, and cost. <br />No oils of grease will be used on equipment introduced into the boring (e.g., drill rod, casing, or sampling tools). <br />No coated bentonite pellets will be used in the well drilling or construction process. Material safety data sheets <br />' (MSDS) and specifications of materials to be installed in the well will be obtained prior to mobilizing onsite, <br />including: <br />' • well casing; <br />• bentonite; <br />• sand; and <br />t • grout. <br />Well materials will be inspected and, if needed, cleaned prior to installation. <br />' II. Personnel Qualifications <br />Field personnel will have current Mine health and safety training. Monitoring well installation activities will be <br />' performed by persons who have been trained in proper well installation procedures under the direction of an <br />experienced field geologist, engineer, or technician. Where field sampling is performed for soil chazacterization, <br />field personnel will have undergone in-field training in terms of soil classification. <br />' I III. Equipment List <br />The following materials will be available during soil boring and monitoring well installation activities, as <br />required: <br />• Site Plan with proposed soil boring/well locations; <br />' • Work Plan and Mine Health and Safety Plan (HASP); <br />• personal protective equipment (PPE), as required by the HASP; <br />• appropriate soil sampling equipment (e.g., stainless steel spatulas, knife); <br />' equipment cleaning materials; <br />• appropriate sample containers and labels; <br />• chain-of-custody forms; <br />i ~reros ~ <br />SOPo4MOniWr Well Installation-Mine.doc <br />