SITE INFORMATION AND CORRESPONDENCE

Home Browse Search

Wells Fargo Bank, Stockton Branch September 6, 1996 Page 5 A corrective action plan was submitted to SJCEHD on March 19963 According to this report, additional hydrocarbon-impacted soil may be present northwest of the former tank area and north of the site, on the Wells Fargo property. Finally, Advanced GeoEnvironmental, Inc. concluded that, based upon feasibility studies and analysis performed at the Top Filling Station site, a soil vapor extraction system is recommended for `-' the remediation of hydrocarbon-impacted soils, and that additional assessment is needed for the remediation of hydrocarbon-impacted groundwater. City of Stockton Right of Way The incident involving the City of Stockton Right of Way, 102 South Wilson Way is immediately south of the subject property. On September 19, 1986, two 500-gallon underground storage tanks were removed from this location. Subsequent laboratory analyses indicated that there has not been a release of petroleum hydrocarbons beneath the -� tanks. Therefore, SJCEHD determined that no additional investigations were warranted at that time.4 49 South Wilson Way Regarding the subject site, which is located at 49 South Wilson Way, a "Notice of Reimbursement" was issued on July 3, 1996, requesting that Wells Fargo conducts a site assessment to determine the extent of contamination in an area adjacent to an underground tank, the location of which was indicated on a 1950 Sanborn Fire Insurance Map. B . PROPOSED AND SCOPE OF SERVICES This Phase II Subsurface Investigation consists of the following objectives: • Geophysical survey of the areas surrounding the bank building to identify potential subsurface structures such as USTs and/or associated piping; • Assessment of subsurface soil conditions beneath the subject site to further, investigate the potential of an on-site source of contamination; • Investigation of on-site groundwater conditions to further study the extent of the known groundwater contamination; • Chemical analyses of soil and groundwater and geological investigations to aid with the selection of the appropriate remedial technologies, and to compare the contamination beneath the subject site with the type of compounds identified at the nearby LUST sites; and • Survey of the property and the depth to groundwater to measure and calculate the groundwater flow direction. 3 Advanced GeoEnvironmental,Inc.,Corrective Action Plan-March 1996,Top Filling Station, 101 South Wilson Way, Stockton, California. March 20, 1996. ° San Joaquin County Public Health Services,Environmental Health Division, letter of September 16, 1993 regarding 102 South Wilson Way, Stockton, California. w 4.r