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• SMTH wells within the uppermost aquifer in order to assess groundwater quality The boring/well locations are plotted on Figure 2 Field methodology and analytical results are discussed in detail in RESNA's Interim Problem Assessment Report, dated January 13, 1992 At the request of PHS/EHD RESNA Industries prepared and submitted a Soil Remediation Workplan dated July 22, 1992 Soil excavation was proposed the soil remediation method for the site In correspondence August 17, 1992, PHS/EHD concurred excavation of hydrocarbon contaminated soil was the preferred method of remediation The site's station building and garage were demolished in December 1994, in part to facilitate the removal of hydrocarbon contaminated soil which is suspected beneath the station building The demolition of the station building was requested in PHS/EHD correspondence dated July 7, 1994 A required demolition asbestos survey conducted previously on the station building, determined the presence of asbestos containing materials E T Abatement, of Modesto California, properly removed and disposed of the site's suspected asbestos containing materials on November 11, 1994 Analyses of groundwater samples collected from the site monitoring wells indicate that groundwater contamination beneath the site indicate the lateral extent of the dissolved hydrocarbon plume associated with the former fuel storage tanks has been essentially defined, with the exception to the north The groundwater flow has been determined to be consistently in the westward direction FIELD ACTIVITIES The following scope of work was based upon the information collected during previous site investigations The work was designed to remove the remaining impacted soil in the vicinity of the former underground storage tanks All field work was performed under the supervision of Smith Environmental personnel in accordance with RESNA's Quality Assurance/Quality Control Plan (QA/QC) and site specific Health and Safety Plan on file with PHS/EHD Soil Excavation and SamnIine On February 14 through 17, 1995, approximately 1,400 cubic yards of soil were excavated from the vicinity of the former underground fuel storage tanks The extent of the excavation is depicted on Figure 3 Excavation was conducted by Goins Environmental Construction (Lic #674281) under the direct supervision of a Smith Environmental geologist Excavation activities were performed under the regulatory guidance of Ms Mary Meays of PHS/EHD A Flame Ioniation detector (FID) in addition to visual and olfactory observations were utilized during excavation to assist in evaluating the lateral and vertical extent of soil impaction FID readings ranging from 0 to 80 ppm and petroleum hydrocarbon odors were noted between 1500811SXR-0995 DOC 2 S