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LBA Realty Draft Soil Suitability and Nitrate Loading Study Chapter 3. Ground Water Analysis 3.1. Ground Water The depth of ground water was found to be approximately -35' MSL (165' below ground elevation) based on domestic well drilled on the property. The State Department of Water Resources does not have sufficient data in the project vicinity to compare this finding. Data is insufficient to determine seasonal fluctuation, directional flow, and gradient. 3.2. Potential Groundwater Contamination Issues Significant water quality sampling and testing was performed as part of the Portable Water Submittal for 14900 W Schulte Road.This project is directly adjacent and the design of the well for the existing project are based on those successfully constructed at 14900. Test data from the completed domestic well at 14900 indicated no primary drinking water standard maximum contaminant levels(MCLS)were exceeded,however some secondary standard MCLs were exceeded. Nitrates were determined to be 4.8 mg/L. Test Data was completed at the recently drilled domestic well prior to development at 14800 indicate a Nitrate level of 5.8 mg/L. Currently,there are no septic systems in use at the project site. There was a small leech field and septic tank to serve the previous the industrial application on the site.There is no paperwork or supporting documentation on this according to EHD.There is a septic system to the west of the project site at 14900 W Schulte Road.The City of Tracy plans to extend their incorporated city towards the site and future city sewage collection could extend towards the project site. There are three(3) proposed septic systems for this development, one(1)for each building.Two(2)are planned to be adjacent to each other between proposed Building A and B and the last is proposed to be in the northeastern corner of the site to serve Building C. 3.3. Current and Future Uses of Groundwater According to the developers and per discussions with the EHD (Robert McClellon)there was a small water well that was destroyed in 2004. There is limited data and relevant permitting paperwork on the existing well. The depth, demand, and other information does not exist to determine any impacts or uses this well had. The future site will have one domestic well with an approximate production of 100 gallons per minute to serve the project site.Additionally,there will be one fire well to fill the onsite fire protection system at a rate of 1,000 gallons per minute. These wells draw from different aquifers. The fire well is not anticipated to be used on a frequent or regular basis. 3.3.1. On-Site Wells A small domestic well is used for drinking water for the existing warehouse (EHD identified as Schulte Road Warehouse Water System, 15000 W. Schulte Road,APN 209-24-025).The well driller's report indicates the well was constructed in 1990,is 400'deep with perforation between 300'and 400'below grade,and has a 10"casing. The adjacent site, 14900 W Schulte Road, has an 8"well for potable water use and a 16"fire suppression well. As previously discussed,two wells will be constructed on site for domestic demands and fire suppression water supply demands, respectively.The design of both wells is based on the two wells with nearly identical demands at the 14900 project site. The current design shows the domestic well with a proposed depth of 385 feet with the perforations between approximately 360 feet and 375 feet with a well casing of 8-inches.The demand of the well to serve the project November 30, 2020 3-1 Schaaf &Wheeler CONSULTING CIVIL ENGINEERS