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F TRODUCTION port issues our findings regarding the Nitrate Loading Study and Soil Suitability Study for posed Antonini Enterprises Trucking Facility on French Camp Road. 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. Michael Hakeem is the Attorney of Record for the project and has provided the preliminary information to complete these studies. The Site Plan was provided by Quartaroli and Associates, Inc. of Manteca, CA. The site is located one mile west of Highway 99,near the termination of Union Road, The APN is 177-100-31. The project is presently composed of 40 acres with the proposed zoning changing from A/G to I/T. The site will be used as a trucking facility with a 10,000 sq ft office and a 11,200 sq ft shop,both with rest rooms. All trucks will exit empty and return empty and there will be no on-site material storage or bulk loading. The purpose of this report is threefold: First, the subject property was evaluated to determine if the proposed septic system to be installed will function as intended. Secondly,the project was assessed for current nitrate impact originating from on-site and surrounding land use, with potential future impact quantified. And thirdly, this report describes a septic system which may mitigate nitrate-nitrogen environmental impact based on contemporary scientific studies in conjunction with the on-site soil characteristics. II. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION The land for the facility and surrounding land has been in agricultural production for many years. This is evidenced by the United States Department of Agriculture (USDA) Soil Maps for San Joaquin County. The current surrounding land use is composed of agricultural production and very low density housing. Directly to the north of the project is the Union Pacific Railroad tracks. To the northwest is the town of French Camp, which is unsewered, and the Stockton Airport. The property is in Flood Zones AO,B and C as shown on Community Panel No. 060299 0605A dated May 15, 1980. Applications on file with the County Environmental Health Department reveal that there have been seven permits issued for repairs/additions to existing systems in the one mile study area. This can be considered a comparatively high number of repairs/additions considering the low density housing and commercial facilities in this locale. Although the housing density is low,the requirement for additional drainage can be most likely attributed to the clay/silt stratum which exists at the typical leachline depth, along with a hardpan layer. 1 Na!!ey fig research