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Mr Harlan Knoll Environmental 27 March 1998 Resources Page 3 Management s Figure 3 presents the results of TPH-g and benzene analyses on groundwater samples collected at the site As the figure indicates, the extent of these compounds in groundwater has not been characterized In an effort to characterize the extent of impact to site groundwater, ERM proposes the collection of groundwater samples from the 10 locations presented on Figure 3 In addition, ERM proposes the collection of soil samples directly above the water table (approximately 7 feet bgs) from each of the groundwater locations to determine the extent of groundwater impact to soil The groundwater sampling locations will be cored from approximately 4 feet bgs to the water table The soils will be screened with an OVA and an appropriate sample will be collected from directly above the water table Groundwater samples will be collected using a Hydropunch sampling tool screened in the top three feet of the water table The proposed soil and groundwater samples will be collected using a truck-mounted Geoprobe sampling rig All soil and groundwater samples will be analyzed by AN/EN, an analytical laboratory located in Marina, CA, for TPH-g (EPA Method 8015M) and BTEX compounds (EPA Method 8020) Trip blanks will be submitted for each day of sampling and will be analyzed for TPH-g (EPA Method 8015M) and BTEX compounds (EPA Method 8020) In addition, a rinsate blank of the decontaminated Hydropunch bailer will be collected to assess the potential of cross-contamination and analyzed for TPH-g (EPA Method 8015M) and BTEX compounds (EPA Method 8020) Based on the desire of both Heinz and the new property owner to rapidly gain approval to close the UST sites, ERM proposes that the analytical work be performed on a rush 3-day turnaround time Following the completion of the soil and groundwater sampling, the sample borings will be grouted using a neat cement/bentonite slurry The borings will be finished with a cement cap to grade In addition, temporary fencing will be place around the two excavations to prevent the excavations from becoming a hazard to site workers The fences will remain on-site until the excavations are closed and backfilled Prior to the commencement of field activities, Underground Service Alert (USA) will be contacted to assist with the identification of buried utilities A site-specific health and safety plan (HSP) will be present on site during field activities All field personnel, including subcontractors, will be familiar with the contents of the HSP