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�i 3.6 Discussion of General Area Septic Tank Repair History: Repair history of the septic j tanks in this area reveals that the ]each lines and seepage pits have resulted in consistent 6, �) performance. There have been no incidents in the area. (See Appendix). 3.7 Description of Proposed or Expected Maximum (including second unit dwellings) septic [-,3 tank usage on site. The homesite will have only a primary residence, no second unit dwelling is L planned. Thus only one septic system is anticipated at this time, —2e-5 et,, ozcvcri ff---- 4.0 GROUNDWATER INFORMATION SECTION: 4.1 Description of the depth and gradient of groundwater in the general area: The depth to l ' ground water in this area is approximately 120 feet according to the map of"Lines of Equal l ' Depth to Groundwater" published Spring, 1999, by the San Joaquin County Flood Control and Water Conservation District. The gradient descends from east to west. T ; 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. 4.3 Description of location a and construction of well and location where water P � t3'P sample(s) were obtained: Water samples were taken from a faucet at the pump house Iocated at 2771 N. Arata Road on May 21, 2007 by Mark Wonderlich of Dillon & Murphy. 4.4 Description of constituents being tested for in the water sample: The water samples are / being tested for nitrates and DBCP. (`f 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: The water samples were obtained from the spigot at the house located at 2771 N.Arata Road. 64The samples were taken by Mark Wonderlich of Dillon &Murphy, and driven directly to 5 Precision Enviro-Tech. The 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 of third it 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 ( 7 information: The complete chain of custody document is located in the Appendix. �f F + FJ F- + 2 5 i 11 77" a107471Soil Suitability Study 0507