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F <br /> 1 . <br /> 3.6 Discussion of General Area Septic Tank Repair pair History: Repair history of the septic <br /> tanks in this area reveals that the leach lines and seepage pits have resulted in consistent <br /> rperformance. There have been no system failures in the area. (See Appendix). <br /> 3.7 Description of Proposed or Expected Maximum (including second unit dwellings) septic <br /> F tank usage on site. The homesite will have only a primary residence, no second unit dwelling is <br /> planned. Thus, only one septic system is anticipated at this time. <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 114 feet according to the map of"Lines of Equal <br /> Depth to Groundwater"published Spring, 1999,by the San Joaquin County Flood Control and <br /> Water Conservation District. The gradient descends from east to west. <br /> 4.2 Description/Discussion of any existing and/or potential groundwater contamination <br /> issues in the general location of the site: The concerns for groundwater contamination in this <br /> 1 area is deemed low due to the depths involved. Insecticides,pesticides, and fertilizers typically <br /> do not impact groundwater at these depths, however, as with any agricultural area, there is <br /> always potential for contamination due to chemicals used in the farming operation. <br /> 4.3 Description of location, type and construction of well and location where water <br /> sample(s) were obtained: Water samples were taken from a faucet at the house located at <br /> 2430 S. Drais Road on June 20, 2007 by Alex Colla of Dillon&Murphy. <br /> F4.4 Description of constituents being tested for in the water sample: The water samples <br /> ► • are being tested for nitrates and DBCP. <br /> 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: <br /> The water samples were obtained from the faucet at the house located at 2430 S. Drais Rd. <br /> The samples were taken by Alex Colla of Dillon &Murphy, and driven directly to Precision <br /> Enviro-Tech. The samples were taken and handled in accordance with Precision Enviro-Tech <br /> requirements. The results from the test can be found in the Appendix. <br /> F4.6 Complete Chain of Custody document, including printed and signed name of third <br /> party sampler, condition of sample and date and time the sample was submitted to the <br /> lab. For Laboratory samplers, complete laboratory report to include the above noted <br /> 1 information: The complete chain of custody document is located in the Appendix. <br /> F <br /> F <br /> f2 <br /> c:107431Soil Suitability Study 0707 <br />