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The estimated 1200 gallons of water extracted from G-1 during the test will be piped to the nearest drainage ditch and allowed to drain to the ground surface. It is highly unlikely that any detectable diesel will be present in the extracted water, because diesel was detected in samples from this well only during 1999, when the groundwater level was much shallower (within the Modesto Formation). Disposing the water to the ditch will save the cost of storing, transporting, and disposing of uncontaminated groundwater. One sample will be collected from G-1 at the conclusion of the test to confirm that no diesel-impacted groundwater was drawn to the well during the test. The sample will be analyzed for TPH-d by EPA method 8015. Task 3.Domestic Well Destruction EHD also instructed Gillies Trucking to replace the existing domestic well with one farther away and screened at deeper depths. Assuming that the State UST Cleanup Fund will reimburse Gillies Trucking for this task, Gillies will retain a licensed water well driller to destroy and replace this well according to County requirements. The location for the new well has not been selected, and is therefore not shown in any figures in this work plan. However, it is probable that the well will be located beyond the borders of our existing site map. After Gillies Trucking has selected a suitable location, a map showing the proposed location will be forwarded to EHD for approval. Task 4. Cone Penetrometer Testing Investigation As noted in Item 2, section 3.0 above, EHD suggested,using cone penetrometer testing (CPT) equipment to further assess the extent of diesel in the groundwater and to aid in the selection of locations for any additional monitoring wells that might be needed. The main objective of this task is to more precisely delineate the"non-detect' line for diesel in groundwater within each of the three stratigraphic intervals that have been identified (Modesto Formation aquifer, Modesto Formation aquitard, and Riverbank Formation aquifer). Eight proposed CPT borings are located in Figure 2. The borings encircle the existing monitoring well network, because diesel has been detected above the laboratory detection limit in at least one of the stratigraphic intervals in all of the existing wells at one time or another. We anticipate that drilling will take place during the second quarter of 2003, and that the soil-water interface will be below the level of the Modesto aquifer throughout the site area at that time. Therefore,the proposed drilling will add no new information regarding the potential extent of groundwater in that interval. When groundwater might again be present within the aquifer cannot be predicted. All borings will penetrate the Modesto aquitard zone. It may be possible to collect a water sample from this zone, depending on the depth to groundwater at the time. At the present time,the soil-water interface is in the lower portion of this interval. Prior to drilling, the