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SOIL SUITABILITY/NITRATE LOADING STUDY NILE GARDEN ELEMENTARY SCHOOL 5700 EAST NILE AVE., APN: 226-07-003 MANTECA, CALIFORNIA This report includes the results of a Soil Suitability/Nitrate Loading Study for Manteca Unified School District's (MUSD) Nile Garden Elementary School Modernization Project located at 5700 East Nile Avenue in Manteca, California (the Site). Figure 1 (Appendix A) presents a Vicinity Map of the Site and Figure 2 (Appendix A) presents a Site Map/Aerial Photograph. 1.0 SOIL SUITABILITY STUDY 1.1 INTRODUCTION AND DEVELOPMENT The Soil Suitability Study (SSS) was conducted to determine whether Site soils are suitable for expansion of the septic system. The SSS was performed pursuant to requirements of Section 9-1105.2(d) of the San Joaquin County Development code and has been prepared to meet the requirements of the San Joaquin County Environmental Health Department's (EHD's) Soil Suitability Study Requirement Checklist (dated 9/25/07). A major element of the field work included conducting percolation tests that meet absorption rates as specified by EHD. A review of published soil information, geologic maps, and available groundwater information was also conducted. 1.1.1 Description of Site, Including Zone Information The Nile Garden Elementary School property is located in the northern San Joaquin Valley approximately 3 miles southwest of Manteca. The approximately 15-acre site (APN: 226-07-003) is generally rectangular in shape and surrounded by mixed agriculture and rural residential development. East Nile Avenue is immediately to the north. The Site elevation is approximately 30 feet above mean sea level and the land is relatively flat (less than 2 percent slope). The topographic gradient slopes gently west toward the San Joaquin River approximately 6 miles away. 1.1.2 Description of Proposed Development We understand that design for the proposed project is currently underway and final details are not available as of this writing. On a preliminary basis, we understand the proposed construction will include a new multi-purpose building of 14,600 square feet, and a kindergarten classroom building of 4,500 square feet. The proposed layout for the Nile Garden Elementary School new building locations, and existing buildings is shown on Figure 3, Appendix A. 1.1.3 Parcel Vicinity Location Map See Figure 4, Appendix A. 1.1.4 Site Map Showing Location of All Items on Parcels (i.e., Structures, Drives, Wells, Septic Systems, Large Trees, Pastures, Pools, Natural Drainage Courses, Ponds, Waterways, Etc.) See Figures 2, 3, and 5, Appendix A. 0 CONDOR