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results from the percolation test prepared by Dillon & Murphy have determined that the site is permeable to a maximum depth of exploration of 42 inches. The soil type allows for infiltration of water through the top soils. The infiltration rate will limit the natural treatment of the sites soils as they drain from the surface layers. The soil survey by US Department of Agriculture (USDA) indicates that the site is composed of Bruella Sandy Loam soil. The Bruella Sandy Loam is composed of 0-8 inches of loamy sand at the top layer, then a layer of sandy clay loam 0-60 inches deep. The site is mainly composed of sandy material. 4.0 GROUNDWATER ANALYSIS 4.1 Description of the depth to groundwater, seasonal fluctuations of groundwater depth, directional flow and gradient: Description of depth to groundwater, seasonal fluctuations of groundwater,directional flow and gradient are referred to in Section 4 of the Soil Suitability Report prepared by Dillon& Murphy that is attached in the Appendix. 4.2 Description/discussion of any existing and/or potential groundwater contamination issues in the general location of the site: Description of existing or potential groundwater contamination issues in the general location of the site are referred to in Section 4.2 of the Soil Suitability Report prepared by Dillon& Murphy (See Appendix). 4.3 Description of the current use of groundwater at the site and of the future expected use of groundwater as related to the proposed development project: Based on the most recent results from San Joaquin County's"Flood Control and Water Conservation District"report on groundwater from Fall of 2017,the estimated depth to groundwater was determined to be 100 feet below the surface. This was verified with the California Department of Water Resource's Water Data Library. The results of the historic depth to ground water show that the relative depth has not changed drastically throughout the years. It fluctuates minimally on a yearly basis. The proposed improvements will not have a negative effect on the current depth to ground water as the proposed usage is less than that of agriculture. See appendix for the site's depth groundwater tables and diagrams. 5.0 SOURCES AND CALCULATED IMPACT OF NITRATE TO GROUNDWATER 5.1 Description of all current off-site sources of nitrate to soil and groundwater in the general up gradient area and the contribution of nitrate load from these sources to the project site: Current off-site source of nitrate to soil and groundwater in the general up gradient area and the contribution of nitrate loads are agriculture and neighboring sites with septic systems with minimal to no current impact to the site. The site does have an existing house and a wine tasting room which were accounted for when determining the capacity for the proposed improvements. The adjacent site does not pose a significant impact as the nitrate concentration can be dispersed through the neighboring site that is approximately 79 acres. The existing site contains a nitrate loading concentration of only 2.8 mg/L-N with the winery and adjacent facilities being established for more than 10 years, confirming the site does have capacity for the proposed improvements. 4