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§ 5.0 CONCLUSIONS AND RECOMMENDATIONS § 5.1 Evaluation of each point-source potential contamination described (surrounding impacted hazardous material sites) and non-point sources (i.e., on-site and surrounding agrichemical applications, and nitrate in the underlying groundwater)pose a low-to-insignificant risk to the subject property and to human health. Septic system density in this locale can be considered sparse. Consequently,the degree of nitrate impact from this source can be considered small. Greater nitrate impact would originate from surrounding agricultural production. Itis unlikely for any of the referenced GeoTracker point-source sites affecting groundwater under the subject property. Additionally, 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 one referenced permitted tank to the east of the property can be considered cross-gradient to the property with respect to groundwater flow. Although noise pollution is generally not covered in the SSCR, since there are adjacent train tracks directly to the north of the property, noise pollution may be a concern V Any importation of dirt to increase the elevation of a building pad must be carefully examined before importation to ensure that it is clean. Before any wells are drilled on the subject property, Ms. Adrienne Elsaesser, REHS of the EHD must be consulted regarding well drilling design in thislocales 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. De minimus conditions were not observed. Additionally, no spillage or dumping of hazardous and/or nonhazardous materials were observed. 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, from a remedial standpoint, that no corrective action is required on the subject property. The subject property is surrounded by properties to the south 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. § 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. Page -7-