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. CAMBRIA 1991 to Present, Quarterly Groundwater Monitoring and Sampling: Monitoring and sampling has been performed at this site on a quarterly basis since the first wells were installed in 1991 Groundwater flow direction has been variable at this site In general, the groundwater flow direction has been to the north with occasional fluctuations to the northeast, northwest, and east In the southern portion of the site groundwater flow direction has occasionally been toward the south Depth to groundwater at this site has generally ranged from 14 fbg to 30 fbg since groundwater monitoring began The groundwater level has steadily risen since the wells were installed and appears to have stabilized at approximately 15 fbg to 16 fbg Historical monitoring and sampling data are summarized in Blame Tech Services Well Concentrations table (Appendix B) Former Exxon Service Station — 4444 North Pershing Avenue- The former Exxon service station located on the opposite side of North Pershing Avenue from the subject site is an open environmental case with SJCPHS This site is reported to have had a large contaminant plume with free product One of Exxon's wells (MW-8) is located adjacent to the Shell site on the sidewalk This well has contained elevated levels of petroleum hydrocarbons and has . been the focus of many discussions between the regulatory agency, Exxon, and, Shell In general, the two scenarios discussed have been 1 petroleum hydrocarbons detected in MW-8 are from the release documented at the Exxon site, and 2 petroleum hydrocarbons detected in MW-8 are from the Shell site Currently this issue remains unresolved 7-Eleven Food Store/Service Station — 4501 North Pershing Avenue. Little data was available for this site It is listed as an active environmental case with the SJCPHS One groundwater monitoring well located on this property suggests soil and groundwater have been impacted by petroleum hydrocarbons 6.2 SAN JOAQUIN COUNTY ASSESSORS OFFICE The San Joaquin County Assessor's office was contacted to ascertain the APN for the subject property Cambria was informed that the APN is 110-180-07 In addition, Cambria contacted the City of Stockton Planning Department, who indicated that the subject property is zoned general business (C2) The adjacent properties to the north and east are zoned commercial (Cl) 6.0 CESAR CHAVEZ CENTRAL LIBRARY . Polk Directories for the City of Stockton were reviewed for the years of 1999, 1993, 1986, 1979, 1972, and 1965 at the Cesar Chavez Central Library City directory addresses were 0837 6