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I. INTRODUCTION This Report issues my findings regarding the Nitrate Loading and Soil Suitability Studies completed for the McManis Family Vineyards. These studies were required by the San Joaquin County Environmental Health Department (EHD), based upon the proposed construction of a Winery Production Office building to be completed at the winery facility. These Studies were completed to examine the underlying soil structure and characteristics to determine the suitability of the existing On-site Wastewater Treatment System (OWTS). This report complies with San Joaquin County Development Title, Section 9-1105.2(d). Mr. Elwyn Heinen, PE, General Manager of Advanced Design Group, Inc., is the engineer-of- record for the winery and for this specific project. He has provided the preliminary information to complete these Studies and has complete drawings of the current facility layout and the construction of the proposed Production Office Building. 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 necessarily be referenced. NLS§ 2.3, SSS§3.1. The subject property is located on the south side of River Road, approximately six miles northeast of the town of Ripon. There are no municipal water, sewer or stormwater management services. Consequently,the winery has its own existing OWTS septic system, domestic well, and on-site stormwater retention system. A new public well to be installed is currently undergoing the permitting process. It will be decades, if ever, before municipal water and wastewater management services become available to this locale. The winery process wastewater is treated by lined ponds at the south end of the facility. These ponds also manage stormwater runoff from the entire winery. Discharge of the combined treated wastewater is managed by the engineering firm of Kennedy/Jenks under Waste Discharge Requirements (WDRs), as promulgated by the Central Valley Regional Water Quality Control Board. SSS§ 1.1, 1.2. The subject property is composed of APNs 245-220-28, 29 and a portion of APN 30. The boundary lines pertaining to the winery itself are delineated on the APN Map found in Appendix A, along with an Aerial photo. These boundary lines create the specific winery area for use in the Nitrate Loading calculations. The percolation testing protocol has found the indigenous soils under the existing conventional leachfield area to contain a sandy loam (fine sandy silt with 11% clay) in the shallow 0 ft to 3.5 ft soils, with comparatively rapid permeability. A backhoe test pit observation determined increasing sand content with increasing depth to a sand soil at the 12 ft depth. Page -1- Chesney Consulting