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L INTRODUTIndustrial This report issues os regarding the Nitrate Loading Study and Soil Suitability Study for the proposed CarmPark North. These studies were required by the San Joaquin County Department of Environmental Health(EHD) and comply with the San Joaquin County Development Title, specifically Section 9-1105.2(d). Mr. Carl Navarra is the owner of the project and has provided the preliminary information to complete these studies. The Site Plan was produced by the engineering firm of Schack &Company of Tracy, California. The project site is located at the east end of the City limits of Tracy on Chrisman Road, at the intersection of where Chrisman Road turns east as Brichetto Road. Currently, the project consists of two commercial buildings on a total of 7.53 acres. It is proposed to construct an additional 5,000 s.f. building directly east and connected to, the existing metal building. This is illustrated on the attached Site Plan. Due to this proposed expansion, EHD has required a new septic system be installed to accommodate the entire project. In summary, we find significant nitrate impact to the groundwater under the existing leachfield area, which warrants the need for a new disposal area with design and operational parameters to mitigate nitrate impact originating from the entire subject parcel. The purpose of these Studies was to collect the following information to fulfill EHD requirements and specify new septic system parameters: ✓ Conduct soil physical and chemical testing. Physical testing included percolation and infiltration testing. Chemical testing included analyses for constituents that influence nitrate loading. ✓ To analyze the capacity of the indigenous soils to accept the anticipated wastewater flows, assess the characteristics of the soil to mitigate nitrate impact, and formulate operational parameters for the proposed filter bed disposal field. This was accomplished by percolation testing and physical/chemical analyses. ✓ To analyze the water table underlying the proposed filter bed to establish a baseline, analyze the existing leachfreld area to determine past and present nitrate impact. Estimate the mounding potential under the proposed filter bed to ensure sufficient treatment distance of the septic effluent. II. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION The construction of the metal building at the south end of the property was completed in 1998. Surrounding land to the east of the project is, and has been, in agricultural production for many decades. This is evidenced by the United States Department of Agriculture (USDA) Soil Maps for San Joaquin County. Directly to the north of the project are the SPT Railroad tracks. As noted on the San Joaquin County Parcel viewer Map, the current surrounding land use is composed Chesney Consulting