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According to the City of Manteca Department of Public Works, the city provides water service ' throughout the site vicinity The city operates 15 water supply wells throughout the city, including two within the site vicinity The city well #19 is located near the corner of Powers Avenue and Marin Street, approximately 1,700 feet west of the site, and the city well #5 and water tower are located approximately 1,900 feet northwest of the site The nearest school to the site is Manteca High School approximately 500 feet to the north The school campus occupies most of the northeast quadrant of the site vicinity According to Mr Chuck Christian, the head custodian, the school supplies all of its own water from a single water well located near the northeast corner of the Agriculture Building, approximately 1,000 feet northeast of the site This well was located during the survey and was found to be operational ' Well construction details were not available The South San Joaquin Irrigation District(SSJID) also operates a network of groundwater wells within the city of Manteca for large volume irrigation supply According to SSJID records, none of their wells are located within the site vicinity, however, three of their wells do exist within one mile ' of the site Other sensitive receptors identified in the site vicinity include the Lincoln Elementary School at 750 East Yosemite Avenue and the Lincoln Park and community swimming pool Lincoln School is approximately 2,000-feet northeast of the site and Lincoln Park is approximately 1,000-feet northeast of the site No hospitals, significant surface water bodies or other sensitive receptors were observed in the site vicinity 1.__2 5 Additional Soil and Groundwater Investigation On January 24, 2003, Ramage Environmental published Additional Site Investigation and Groundwater Monitoring Report, Fourth Quarter 2003, which documented soil and groundwater sampling and analysis from seven additional Geoprobe soil borings The borings included one into the second groundwater-bearing zone near the former USTs (G-6), and six (G-7 through G- 12) into the first groundwater zone on- and off-site (Figure 2) Results of the investigation indicated that the vertical 9 and lateral extent of impacted groundwater remained undefined The soil sample analytical results are summarized in Table 1, and the groundwater analytical results are included in Table 2 On March 21, 2003, based on the results of this investigation, EHD requested this work plan 1 i 1