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Geosyntec® <br /> consultants <br /> As part of this task, Geosyntec will perform the following activities: <br /> • Mark well locations and arrange for permitting and underground utility <br /> clearance; <br /> • Update the project health and safety plan, as necessary; <br /> • Drill and install the monitoring wells; <br /> • Survey the wells; and <br /> • Develop and sample the wells. <br /> 2.3.1 Well Location,Permitting, and Underground Utility Clearances <br /> Geosyntec will visit the Site to mark well locations for underground utility clearances <br /> and notify Underground Service Alert (USA) a minimum of two business days before <br /> drilling. Each well location will also be cleared by a private utility locator. Geosyntec <br /> will obtain well permits from the County prior to beginning field activities. <br /> 2.3.2 Drilling and Installation of Groundwater Monitoring Wells <br /> A minimum of four, two-inch diameter monitoring wells (DMW-1, DMW-2, DMW-3, <br /> and DMW-4) will be installed in the uppermost groundwater, at the locations that will <br /> be proposed following the completion of Task 2. <br /> First groundwater was encountered between approximately 15 and 20 ft bgs during the <br /> past investigations at the Site. We anticipate that first encountered groundwater will be <br /> at similar depths during the drilling of the monitoring wells. Actual depths will be <br /> determined in the field,based on the conditions encountered. <br /> The wells will be drilled and installed by a licensed California C-57 drilling contractor <br /> using hollow stem augers. Geosyntec will provide oversight of the drilling operations <br /> and well installations. The first well will be continuously logged to obtain geologic <br /> information and to visually identify first-encountered groundwater. Soil samples from <br /> the remaining wells will be collected for logging purposes at approximately 5-ft <br /> intervals. Soil cuttings will be contained in 55-gallon drums.. Soil samples will not be <br /> collected for chemical analysis unless unusual soil conditions are noted during drilling. <br /> Final Work Plan.doc 10 27 June 2012 <br />