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3.6 Discussion of General Area Septic Tank Repair History: No repair history has been shown for surrounding parcels. Research was conducted by San Joaquin County Environmental-Health Department staff(See Appendix). 3.7 Description of Proposed or Expected Maximum (including second unit dwellings) septic tank usage on site. There are no immediate plans for any more dwellings. Parcel 1 and the 3 ) designated remainder are entitled to a g primary residence 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 depth to k ground water in this area is approximately 110 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 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 potential for contamination due to chemicals used in the farming operation. 4.3 Description of location, type and construction of well and location where water sample(s) were obtained: Water samples were taken from a spigot at the domestic well located at 14807 F Eight Mile Road on September 30, 2010 by Mike Toy of Dillon& Murphy. � 3) Fil 4.4 Description of constituents being tested for in thewater sample: The water samples are being tested for nitrates and DBCP. CJ 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 14807 Eight Mile Road. The samples were taken by Mike Toy of Dillon& Murphy, and driven directly to Precision ("5) 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 party sampler, condition of sample and date and time the sample was submitted to the lab. For (y•�, i Laboratory samplers, complete laboratory report to include the above noted information: The complete chain of custody document is located in the Appendix. �j 5.0 SOIL PROFILE INFORMATION SECTION: ' IJ 5.1 Site map showing location,with dimensions, of the soil profile pit on the parcel: See FAppendix. 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 F4 in diameter. The holes were backfilled with 2 inches of"pea gravel". 2 Y:IDMDOC\20I0110391SOIL SUITABILITY STUDY 100110.doc