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Mr. Chris Dressel March 4,2014 Page 11 of 18 then an updated revised proposal to complete the Phase II ESA will be forwarded to the client if costs increase. Client will be credited for work not necessary as a result of the Hull investigation. Soil Probe and Groundwater Sampling Soil To assess subsurface conditions, a series of soil probes will be advanced as located on Figure 3. It is proposed that the soil probes be advanced with a direct-push Geoprobe®sampling rig. Using these methods, each soil sampling location will first be probed to obtain continuous core samples suitable for soil classification. Samples will also be collected and field screened for the presence of volatile organic compounds (VOCs) by using a photoionization detector (PID). The probes will be advanced to a maximum depth of the water table (likely less than 25 feet below the ground surface(bgs)). However, in the area of the buried fill/foundations/debris located south of Building 113 field conditions (i.e., visual observations, olfactory indications, or PID readings) will dictate whether the probes continue to the groundwater table. However, a minimum of four soil probes will be advance to the water table in that area. Field indications (stained soil, fill, odor, elevated PID)will dictate what soil interval from which a soil sample will be collected and submitted to an analytical laboratory for analysis. If there are no field indications of impact then the soil sample will be obtained from the bottom of the probe or just above the groundwater table if groundwater is encountered. Laboratory-certified sampling containers for the soil will be filled in accordance with laboratory specifications. The samples will be placed into a cooler, packaged with ice to maintain a shipment temperature of approximately 4 degrees Centigrade, documented with a chain-of- custody form, sealed, and shipped overnight or hand-delivered to the selected analytical laboratory. Groundwater It is proposed that groundwater samples also be collected from select soil probes exhibiting qualitative indications of impact. Groundwater sampling will be performed using a Hydropunch- style tool at probe locations where groundwater is encountered. This tool consists of a hollow casing within which is a 4-foot length of#10-slot stainless steel well screen. Once soil sampling is completed at each probe location where groundwater sampling is also to be completed, the