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§ 5.0 CONCLUSIONS AND RECOMMENDATIONS § 5.1 Evaluation of each point-source potential contamination described(i.e., discarded nonhazardous items,waste tires) and non-point sources (i.e., surrounding agrichemical applications, and nitrate in the underlying groundwater)pose virtually no risk to the subject property and to human health. Septic system density surrounding the property is extremely sparse. The proposed project will be connected to City of Mountain House for water and sewer services. It is virtually impossible at any of the referenced ERS point-source sites could affect groundwater under tlii� There are no observable aboveground storage tanks nor underground tank appurtenances on, or immediately surrounding the property. Therefore, it may be considered almost impossible,that any tanks in this locale may affect the property because of the distances and groundwater directional flows involved. The ASTM E-1527-05 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. De minimus conditions were observed as discarded nonhazardous items such as used tires, all noted in the photographic plates. 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." It is my professional opinion that following corrective action should be taken with regards to.the subject property: All on-site water conveyance structures shall be carefully assessed for proper decommissioning. Waste tires and other waste items must be disposed of properly. § 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 Schack& Co. is the civil engineer for the project and is currently in the process of submitting the Tentative Parcel Map. § 5.5 As referenced above, the Appendices contain the documentation to support the applicable data and information found in this Report. Page -6- Chesney Consulting