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r22�� 2222�� I. INTRODUCTION This report presents the findings of the Soil Suitability and Nitrate Loading Studies completed for the project referenced on the Title Page. These studies were required by the San Joaquin County Environmental Health Department (EHD) and were completed to examine the underlying soil characteristics and determine the suitability of an Onsite Wastewater Treatment System (OWTS). This report complies with San Joaquin County Development Title, Section 9-604.010(d)(1). Mr. Zack Wong, PE, President of Wong Engineers, Inc. is the project Civil Engineer and has provided the preliminary information for these Studies, including the proposed facility Site Plan layout in Appendix A. The OWTS design parameters for the project that are included in this report are based upon the facility Site Plan. Within the text of this Report, Bolded Section (§) numbers are referenced at the beginning of an applicable Paragraph(s), or Appendices that correspond with the EHD Requirements Checklist. Section Numbers referenced as SSS§, are sections applicable for the Soil Suitability Study Requirements Checklist. Section Numbers referenced as NLS§, are sections applicable for the Nitrate Loading Study Requirements Checklist. Other portions of text may also apply to other sections of the Checklists, but may not be necessarily referenced. From the soil sampling procedures, the texture analyses have found the indigenous soils under the proposed effluent disposal area to contain clay, loam and sandy loam soil down to 25 ft. Soil permeability determined through percolation testing reveal failing percolation rates at the three depths tested. Additionally, pursuant to EHD guidelines, design parameters must be completed by a CA Registered Civil Engineer(RCE). Consequently, this project falls under the EHD promulgated category of an"engineer designed system." II. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION NLS§ 1.0, etc., SSS§ 1.0, etc. The subject property is located on the east side of Newton Road in Stockton, between Cherokee Road and Stevenson Road. The SJC Community Development Department(CDD) Administrative/Conditional Use Permit document is found in Appendix B and illustrates the proposed Project Description. Domestic water is currently supplied California Water Service. Stormwater retention will be managed by a percolation basin as illustrated on the Site Plan. It will be several years before municipal wastewater and stormwater services become available to this area of Stockton. There were two structures on the property that have since been razed. The subject property is presently operated as a Class 8 truck parking area. There is a cell phone tower on the property that is on a separate Assessor's Parcel Number(APN) from the subject property. Land use to the north, south, east and west are commercial and industrial facilities. Page -1- Chesney Engineering, Inc.