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3.6 Discussion of General Area Septic Tank Repair History: Repair history of the septic tanks in this F, area reveals that the leach lines and seepage pits have resulted in consistent performance. There are no unusual failures. 3.7 Description of Proposed or Expected Maximum (including second unit dwellings) septic tank F�, usage on site. Once the property is developed, a septic system will be required. The system will be designed to County standards. i F 4.0 GROUNDWATER INFORMATION SECTION: I 4.1 Description of the depth and gradient of groundwater in the general area: The depth to ground water in this area is approximately 120 feet according to the map of"Lines of Equal Depth to Groundwater" published Spring, 1999,by the San Joaquin County Flood Control 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 is deemed low due to the depths involved. Insecticides, pesticides, and fertilizers typically do not impact groundwater at these depths, however, as with any agricultural area, there is always potential for contamination due to chemicals used in the farming operation. There was a gas station on the adjacent property that has been destroyed under permit. All soil testing and demolition was done under County permit. { 4.3 Description of location, type and construction of well and location where water sample(s) were obtained: No water samples were able to be taken at the time of the percolation test. The subject parcel is located within a municipal water district. Int 4.4 Description of constituents being tested for in the water sample: NIA 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: No f—! samples taken, as stated above in section 4.3. 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: NIA iA 5.0 SOIL PROFILE INFORMATION SECTION: 5.1 Site map showing location, with dimensions, of the soil profile 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_" i 2 _c 1451771cn�1 R--t nonQnF