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Sonic Drilling Field Standard Operating Procedure <br /> SWE-FSOP-302;Revision 0 Ahtna Southwest Environmental Operations <br /> If a monitoring well is to be installed in the borehole, activities will be supervised by the Field Geologist <br /> following FSOP-601, "Well Installation." <br /> 4.5 Demobilization/Site Restoration <br /> After drilling, sampling, and well installation or borehole abandonment is completed, the casing, drill <br /> string, and tools should be laid down, the mast lowered, and the rig moved off the location. The FTL or <br /> designee should supervise the demobilization/site restoration. <br /> All debris generated by the drilling operation should be disposed of appropriately. The site should be <br /> cleaned,the ground washed as necessary, and the site conditions restored as per the project work plans. <br /> All abandoned borings should be topped off and completed per the project work plans. All monitoring <br /> wells should also have their surface completions finished per the project work plans. Any hazards <br /> remaining due to drilling activities should be identified, and appropriate barriers and markers should be <br /> put in place, as per the APP. All soil cuttings and fluids should be adequately contained, clearly labeled, <br /> and maintained to comply with the project work plans. <br /> 5.0 Quality Assurance/Quality Control <br /> Conduct the 3-Phases of Quality Control Method described in the project work plans. <br /> Quality Assurance (QA) and Quality Control (QC) procedures for drilling and field documentation review <br /> will be performed bythe FTL or PLto check that procedures and documentation content and level of detail <br /> comply with this SOP. If a deficiency or a variance was taken to the SOP, the PL should document the <br /> deficiency/variance and determine the need for corrective action in coordination with the QA Manager. <br /> If a non-registered geologist performs the oversight, a registered Project Geologist is responsible for <br /> reviewing the fieldwork documentation for the accurate and complete representation of the drilling and <br /> approval of final logs. <br /> 6.0 Documentation Review <br /> The FTL is responsible for daily review of the activities performed at the site and fieldwork documentation <br /> for compliance with requirements (Section 4.0) and legibility. Errors and omissions should be explained <br /> and revisions to an entry signed and dated by the FTL. <br /> 7.0 References <br /> None cited <br /> Page 11 of 11 <br />