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Y ;O 3.6 Discussion of general area septic tank repair history: There are records of repair history of septic tanks in this area. (See Appendix). 3.7 Description of proposed or expected maximum (including second unit dwellings) septic tank usage on site: It is proposed to expand an existing winery up to 15,960 square feet. However it is not adjacent to the existing home as the site is 45 acres. The proposed building will two bathroo s. / 4.0 GROUNDWATER INFORMATION SECTION 49 ar 4.1 Description of the depth and gradient of groundwater in the general area: The depth to ground water in this area is approximately 30 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 moderate 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: A water sample was taken from a well head spigot from the existing well of the subject parcel, located at 5573 Woodbridge Road, Lodi, CA 95242 on May 20, 2019 by Mike Toy of Dillon&Murphy. 4.4. Des 'ption of constitnre tsn beim ested for in the water sample: The samples are being n� teste or nitrates and DBCP. 4.5 D cription of how sam 1 s obtained, handled, stored, and transported to the lab: Thew taken from a well head spigot from the existing well located at 5573 Woodbridge Road, Lodi, CA 95242. The samples were taken by Mike Toy of Dillon&Murphy, and driven directly to Precision-Enviro Tech. These samples were taken and handled in accordance with Precision-Enviro-Tech requirements. The results from the test can be found in the appendix. 4.6 Complete Chain of Custody document,including printed and signed name (�;ird party sampler, condition of sample and date and time the sample was submitted to the la . Laboratory samplers, complete laboratory report to include the above noted information: The complete chain of custody document is located in the Appendix. 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". 2