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i 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 are been no incidents to report (See Appendix). 3.7 Description of proposed or ex ecte�maximum (including secondd- t�wellings) `+ septic tank usage on site: There a two homes on the subject parcel No.aldditional septic • systems are anticipated at this time. However, each proposed parcel is entitled to a primary home and a second unit dwelling. 4.0 GROUNDWATER INFORMATION SECTION + 4.1 Description of the depth and gradient of groundwater in'the general area: The de _ ground water in this area is 30 feet and the depth to potable water is approxim ei 180 feet - according to the map of"Lines of Equal Depth to Groundwater" published Spring, l� 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. II 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 spigot at the well located at 19912 E. River Road on June 3, 2011 by Mike Toy of Dillon.&Murphy. 4.4. Description of cons 'tuents being tested for in the water sample: The water samples are being tested for nitrates anhi DBCP. 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 well located at 19912 E. River Rd. The samples were taken by Mike Toy of Dillon & Murphy, and driven directly to 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. F• 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 inc dc=tlae_ above noted information: The complete chain of custody document is located in the Appendix. 2 r