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§ 3.4 Description of all past off-site potential and/or known above and below ground7ofthe contamination identified in the area of the project site that has or may impact th have been referenced above in Section §3.1. In addition, nitrate contamination underlying groundwater may be a potential source of contamination due to the production in this region. The likelihood of DBCP contamination is a highly remote possibility. These two constituents (nitrate and DBCP)will be tested for the Soil Suitability Study, to be completed for this project. Soil data and information will also be provided in the Soil Suitability Study. As referenced, agricultural spray drift (non-target) from surrounding production land may contribute to above ground contamination of the subject property, although for relatively brief periods of time. Long-term persistent agrichemicals, namely DDT is probably found in the on-site soils, since it is found in virtually all San Joaquin Valley soils. Residual DDT that may be present within the on-site soils poses an (Y' insignificant risk to human health, and the environment. §3.5 Description of all current off-site potential and/or known above and below ground sources of contamination identified in the area of the project site have also been referenced in Section §3.1. Future use of the project site will continue to be cattle grazing and residential. Protection of the on-site residential structure from ground or air-applied agrichemicals is accomplished by spraying in the early morning hours when there is typically no wind. § 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 in the above Sections have been discussed in the respective Sections to facilitate the transfer of information to the reader. § 5.0 CONCLUSIONS AND RECOMMENDATIONS § 5.1 Evaluation of each point source potential contamination described(i.e., existing and future septic systems, the nearest leaking underground storage tank, on-site electrical transformers and de minimus items such as fuel cans in an on-site storage shed) and non-point sources (i.e., on-site and surrounding agrichemical application and non-target drift, nitrate from on- o-'0 site fertilizer applications,possible DBCP groundwater contamination, and possible DDT soil concentrations)pose a low-to-insignificant risk to the environment and to human health. Page-5- Chesney Consulting