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3.7 Description of proposed or expected maximum (including second unit dwellings) <br /> septic tank usage on site: There are currently no new plans for construction. Any new systems must be <br /> constructed under a permit. <br /> 4.0 GROUNDWATER INFORMATION SECTION <br /> 4.1 Description of the depth and gradient of groundwater in the general area: The depth to <br /> ground water in this area is approximately 170f feet according to the map of"Lines of Equal Depth <br /> to Groundwater" published Spring, 2024, by the San Joaquin County Flood and Water <br /> Conservation District. The gradient descends from East to West. <br /> 4.2 Description/discussion of any existing and/or potential groundwater <br /> contamination issues in the general location of the site: The concerns for groundwater <br /> contamination in this area are deemed low due to the depths involved. Insecticides, pesticides, <br /> and fertilizers typically do not significantly impact groundwater at these depths, however, as with <br /> any agricultural area, there is always a potential for contamination due to chemicals used in the <br /> farming operation. <br /> 4.3 Description of location (address/APN), type and construction of well and location <br /> (well head/kitchen tap)where water sample(s)were obtained: A water sample was taken from <br /> a spigot at the well located at 262 N. Hewitt Road on April 3, 2026 by Bradley Handel of <br /> Dillon & Murphy. <br /> 4.4. Description of constituents being tested for in the water sample: The water sample was <br /> tested for nitrates and DBCP. <br /> 4.5 Description of how sample was obtained, handled, stored, and transported to the <br /> lab: The water sample was obtained from the spigot located at 262 N. Hewitt Rd. The sample was <br /> taken by Bradley Handel of Dillon & Murphy, and driven directly to Precision Enviro-Tech. The <br /> sample was taken and handled in accordance with Precision Enviro-Tech requirements. The results <br /> from the test can be found in the Appendix. <br /> 4.6 Complete Chain of Custody document, including was printed and signed name of third <br /> party sampler, condition of sample and date and time the sample was submitted to the lab. <br /> For Laboratory samplers, complete laboratory report to include the above noted <br /> information: The complete chain of custody document is located in the Appendix. <br /> 5.0 SOIL PROFILE INFORMATION SECTION <br /> 5.1 Site map showing the location, with dimensions, of the soil profiled pit on the parcel. See <br /> Appendix. <br /> 5.2 Description of soil profile pit including depth and dimensions. The shallow test holes <br /> were prepared per County Standards. The holes were excavated to depths varying from 22.5 to <br /> 27 inches and 8 inches in diameter. They were backfilled with 2 inches of"pea gravel". <br /> 2 <br />