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FF § 5.0 CONCLUSIONS AND RECOMMENDATIONS 5.lEvaluations of each point source potential contamination described(i.e.,the LUFT and 77and 00 ft of the property,and the on-site,and surrounding septic tanks)and non-po( .e., on-site and surrounding agrichemical application with the possibility of non-target nitrate in the underlying groundwater) pose a very low-to-insignificant risk to the subject property and human health. Septic system density in this locale can be considered very sparse. Consequently, the degree of nitrate-nitrogen impact from this source can be considered extremely small. It is impossible that any of the referenced LUFT sites,or non-point sources could affect groundwater under the subject property. There are no observable aboveground storage tanks, nor underground tank appurtenances immediately surrounding the property. Therefore, it may be considered highly unlikely that any tanks in this locale may affect the property because of the distances involved. The ASTM E-1527-00 Document referenced on Page 2 refers to de minimus environmental conditions. De minimus conditions generally do not present a material risk to public health or to the environment and generally would not include an enforcement action if observed by the appropriate governmental agencies. Household hazardous materials may be considered de minimus concerns if there has been no spillage or dumping. Typical household"hazardous materials" include gasoline, paint thinners, new and used motor oil, antifreeze, etc. Spillage or dumping of typical household hazardous substances were,not observed. It is noted in the Environmental Questionnaire that there was apparently never an underground or above ground fuel storage tank on the property for as long as the Ruiz's have owned the property, other than the two on-site propane tanks. The aforementioned potential of asbestos and lead paint within the residential structure is a possibility. Section 9-905.12 of San Joaquin County Development Title states"Corrective Action: If the report indicates there are surface and subsurface contamination, corrective action shall be recommended in the report and concurred with by Environmental Health prior to the issuance of the building permit." Therefore, it is my professional opinion that no environmental corrective action is required on the subject property at this point in time. The majority of the subject property will continue to be productive farmland,and is surrounded by properties that engage in production agriculture. Consequences of this surrounding land use include: noise, dust, odors, insects, machinery, spray equipment,crop dusting aircraft, trucks,exhaust and other environmental effects that may be offensive to some people. It is my opinion that bottled water should always be used for drinking and cooking purposes in agricultural production regions. § 5.2 The Appendices,found in Section 7 incorporate all of the applicable information referenced in this Report. § 5.3 See below for signature and stamp. §5.4 The Ruiz's are currently in the process of submitting the land use application, through their consultant, Schack and Company. (209) 835-2178. § 5.5 As referenced above,the Appendices contain the documentation to support the applicable data and information found in this Report. Page -7- Chesney Consulting