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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 6,J unerring performance. There have been no incidents to report (See Appendix). 3.7 Description of Proposed or Expected Maximum (including second unit dwelling) Septic Tank Usage On-site: There are two proposed parcels. There are no immediate plans for any more dwellings. However, each parcel is entitled to a primary unit 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 ground water in this area is approximately 120 feet according to the map of"Lines of Equal Depth to Groundwater" published Spring, 1999, by the San Joaquin County Flood and Water Conservation District. The gradient descends from east to west. 4.2 Des cri tionldiscussion of an existing and/or potential roue p y g p groundwater contamination j 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 were taken from the spigot at the existing well. 0-kmCrIvG lot�0 C � 4.4. Description of constituents being tested for in the water sample: Nitrates and DBCP. 4.5 Description of how sample was obtained, handled, stored, and transported to the lab: Water samples were obtained, handled, stored and transported to Precision EnvironTech Standards. 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 1 lab. For Laboratory samplers, complete laboratory report to include the above �) noted information: (See 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 hole was prepared per County Standards. The hole was excavated to a depth of 42 inches and 12 inches in diameter. The hole was backfilled with 2 inches of"pea gravel". 5.3 Description of Soil Lithology as Noted from Test Pit by Appropriate Professional Using Industry Standard Protocol: The soil in this area is classified as Archerdale Clay Loam 2