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I 11. EXECUTION <br />1! 1 CONSTRUCTION SCHEDULM <br />SWD will schedule installation of the soil gas wells after the approval of the drilling <br />permits by EHD. SWD has tentatively planned to install the wells in July 2013. <br />The project is expected to be completed in three (3) working days. Work hours for the <br />drilling contractor will be Monday to Friday from 8:00 am to 4:30 pm. Inspection by <br />EHD will be scheduled within that time (see below). <br />2.0 MARKING PRIOR TO CONSTRUCTION <br />A high-pressure petroleum pipeline owned by Shell Oil is present in the general vicini- <br />ty of the proposed soil gas wells (Figure 1). Prior to drilling, Underground Service <br />Alert (USA) and Shell Oil will be notified. Drilling will be coordinated with Shell Oil <br />representatives in their presence. <br />3.0 INSPECTION <br />Well Installation, including placing casing, gravel, bentonite, and the top cement seal, <br />will be in the presence of EHD inspector. SWD will notify EHD five (5) working days <br />in advance for the first inspection. Consecutive inspections will be scheduled with <br />EHD in the field based on the progress of well construction. <br />SWD will schedule inspections with EHD from 9:00 a.m. to 4:00 p.m. during working <br />days when inspection will be needed. SWD will pay overtime for inspections that re- <br />quire overtime hours by EHD staff. SWD understands that drilling the well borehole <br />does not require inspection by EHD. <br />4.0 DRILLING <br />Drilling of the wells will be by Gregg Drilling, a licensed drilling Contractor. <br />A hollow stem auger drill rig will be used for drilling. SWD's contractor is required to <br />clean the drilling equipment off-site before drilling. <br />Drilling of the wells will be to the depth specified (Figures 2 and 2A). A boring log will <br />be compiled during the drilling of the well by SWD's consulting soil's Engineer or Ge- <br />ologist. Sand lens encountered during drilling will be documented; however, no sand <br />lenses have been detected in the boring of the previous monitoring wells. A <br />hand-written boring log will be provided to the EHD inspector before4well construction. <br />Work Plan -Soil Gas Well Installation Page 2-4— Solid Waste Division <br />Corral Hollow Landfill Public Works Department <br />