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§ 5.0 CONCLUSIONS AND RECOMMENDATIONS § 5.1 Evaluation of each point source potential contamin described(i.e., the T sites, the electrical transformers, de minimus items suc as the septic tank) an non- nt sources (i.e., agrichemical application andjnon-target drift, nitrate and possibl CP in the 'derl),ng groun er, and possible DDT soil concentrations)pose a ve low-to- nsignifcant risk to t subject property and-truman health. It i le that any of the referenced LUFT sites, or non-point sources (other than nitrate) could affect groundwater under the subject property. There are no USTs immediately upgradient to the property. Therefore, it may be considered highly unlikely that any tanks in this locale may affect the property because of the distances involved from the subject property. 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 hazardous substances were not observed. In fact, the property is exceptionally clean. It is noted in the Environmental Questionnaire that there was apparently never an above ground or underground storage tank on the property for as long as Mr. Boersma has owned the property. 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 corrective action is required on the subject property, as assessed. 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. The subject property will continue to be productive farmland, and is surrounded by properties that engage in production agriculture and production of agricultural harvesting and related equipment. 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. Bottled water should always be used for drinking and cooking purposes in agricultural / production regions. § 5.2 The Appendices, found in Section 7 incoryi6rate all of the applicable information Ireferenced in this Report. Page-7- Chesney Consulting