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r i i x'3.3 Description of all current - p ent on site potential and/or known above and below ground sources of contamination identified at the project site: Presently, there are no underground storage tanks on the property and visual inspection did not produce any evidence of buried containers, as well as any odors that would be associated with buried chemical tanks. There are no fertilizer tanks above ground. 3.4 Description of all past off-site potential and/or known above and belowg round sources of contamination identified in the area of the project site: Past off-site potential for contamination is moderate. Other sources of potential contamination is the surrounding vineyard and the chemicals used in their farming operation. Also the retired dairy located to the north of subject parcel is a potential source of contamination. There is no knowledge of below ground sources of contamination in the area of the project site that has or may impact the project site. d3.5 Description of all present off-site potential and/or known above and below ground sources of contamination identified in the area of the project site: Present off-site potential for contamination is moderate. Other sources of potential contamination is the surrounding vineyard and the chemicals used in their farming operation. There is no knowledge of below r ground sources of contamination in the area of the project site that has or may impact the project site. I 4.0 EVALUATION OF PAST AND CURRENT SOURCES OF CONTAMINATION IDENTIFIED AT OR NEAR THE SITE AND RECOMMENDATIONS FOR FURTHER ACTION: /'4'.1 Evaluation of each potential and/or known source of contamination identified for any real and/or potential threat to human health and the environment: The depth to_ground water in this area is approximately 60 feet. Due to this depth, any pesticides, insecticides and e izers use on e property 1n e past or present would m have a mrrnal im act to the aund i water. The use of approved best management practices for the containment of soil or any contaminates by straw waddles around the construction site and other practices to reduce the introduction of any dirt or contaminates into the storm runoff system will be required at the time of any future construction per County Building Department. (� 5.0 CONCLUSIONS AND RECOMMENDATIONS SECTION: I J 1 Discussion of the above evaluation: T rementioned fanning practices creates the potential for contamination. The close proximity to Lower Sacramento Road could be a concern. F1 However with the drainage of water away from the roadway and the fact that the water from Lower Sacramento Road is not retained on the subject property, the potential for contamination F, .fid below, and no mitigation measures are recommended at this time. I 2 cA05551Contamination Report 041006