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f _ I k F 3.6 Discussion of General Area Septic Tank Repair History: Repair history of the septic tanks in this area reveals that the leach lines and seepage-pits—have resulted in consistent unerring performance. There have been no incidents to repoA, (See Appendix). l 3.7 Description of Proposed or Expected' aximum (including second unit dwelling) Septic Tank Usage On There are no i mediate plans for any more dwellings. However, each parcel is entitled to a primary uAa� second unit dwelling. 4.0 GROUNDWATER INFORMATION SECTION E 4.1 Description of the depth and gradient of g and ter in the general area: The depth to ground water in this area is approximat jy 150 et according to the map of"Lines of Equal Depth to Groundwater" published Sprin�999, 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: Water samples taken from a ' faucet at the house located at 8129 N. Podesta Lane on November 19, 2010 by Mike Toy of Dillon&Murphy. t x 4.4. Description of constituents bei g tested for in the water sample: The water samples are being tested for nitrates and DB/U U 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: The water samples were obtained from a faucet at the home located at 8129 N. Podesta Lane. The samples were taken by Mike Toy of Dillon & Murphy, and driven directly to _ ecision ` Environ-Tech. The samples were taken and handled in accordance with Precision the Environ-Tech requirements. The results from the test can be found i Appendix. 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 bovenoted 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 holes were prepared per County Standards. The holes were excavated to a depth of 42 inches and 8 inches in diameter. They were backfilled with 2 inches of"pea gravel". 2