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I. INTRODUCTION This report issues our findings regarding the Nitrate Loading Study and Soil Suitability Study for the proposed Carmelo's Industrial Park. These studies are required by the San Joaquin County Department of Environmental Health (PHS-EHD) and comply with the San Joaquin County Development Title, specifically Section 9-1105.2(d). Mr. Pete Navarra is the Manager for the project and has provided the preliminary information to complete these studies. The Site Plan and Septic Plan were provided by Mike Smith Engineering of Lodi, CA. The project site is located at the east end of the City limits of Tracy on Carmelo Avenue, near the intersection of Chrisman Road and I 11h Street. The APN is 250-140-14. Currently, the project consists of commercial buildings and open land on a total of 7.53 acres. It is proposed to construct additional buildings on the subject Parcel, as illustrated on the attached Site Plan and Septic Plan. It is also proposed to connect the existing and future buildings south of Carmelo Avenue to an on-site wastewater treatment system which will discharge effluent with a nitrate- nitrogen concentration below Drinking Water Standard/Maximum Contaminant Levels. The existing buildings north of Carmelo Avenue will remain connected to conventional septic systems consisting of septic tanks and leachfields. The purpose of these Studies was threefold: ❑ 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 quantify the reduction of nitrate loading from landscape plants. This was accomplished by percolation testing and physical/chemical analyses. ❑ To analyze the underlying groundwater to determine past nitrate impact and estimate assimilative capacity for future nitrate impact. ❑ Determine the reduction of nitrate impact by installing an on-site wastewater treatment system for future commercial development south of Carmelo Avenue. II. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION The subject property has been in the Navarra Family for more than 27 years. The surrounding land to the north and 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. The current surrounding land use is composed primarily of commercial properties to the west, toward the City of Tracy, and medium density residential to the southwest. Directly to the north of the project is the SPT Railroad tracks. 1 Chesney Consulting