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3.7 Description of proposed or expected maximum (including second unit dwellings) septic tank usage on site: There are no immediate plans for construction. However, each parcel is entitled to a primary residence and a second unit dwelling. Any new septic systems must be constructed under permit. 4.0 GROUNDWATER INFORMATION SECTION 4.1 Description of the depth and gradient of groundwater in the general area: The depth to ground water in this area is approximately 100 feet according to the map of"Lines of Equal Depth to Groundwater" published Fall, 2017, by the San Joaquin County Flood and Water Conservation District. The gradient descends from east to west. 4.2 Description/discussion of any existing and/or potential groundwater contamination issues in the general location of the site: The concerns for groundwater contamination in this area are deemed low due to the depths involved. Insecticides, pesticides, and fertilizers typically do not significantly impact groundwater at these depths. However, as with any agricultural area, there is always a potential for contamination due to chemicals used in the farming operation. 4.3 Description of location (address/APN), type and construction of well and location (well head/kitchen tap)where water sample(s) were obtained: There was no access to an on- site well. The well is used for irrigating only and there is no owner spigot to obtain a water sample from. 4.4. Description of constituents being tested for in the water sample: N/A 4.5 Description of how sample was obtained,handled, stored, and transported to the lab: N/A 4.6 Complete Chain of Custody document, including printed and signed name of third party sampler, condition of sample and date and time the sample was submitted to the lab. For Laboratory samplers, complete laboratory report to include the above noted information: N/A 5.0 SOIL PROFILE INFORMATION SECTION 5.1 Site map showing the location,with dimensions, of the soil profiled pit on the parcel. See Appendix. 5.2 Description of soil profile pit including depth and dimensions. The shallow test hole was prepared per County Standards. The hole was excavated to a depth of 42 inches and 8 inches in diameter. The hole was backfilled with 2 inches of"pea gravel". 5.3 Description of soil lithology as noted from test pit by appropriate professional using industry standard protocol. The soils in this area are classified as Archerdale clay loam, finrod clay loam, and vignolo silty clay loam, as stated in the Soil Survey of San Joaquin County, as provided by the United States Department of Agriculture, Soil Conservation Service. 2