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FHealth NTRODUCTION AND PROPOSED DEVELOPMENT this report was to investigate the property for real or potential environmental and report the findings to the Client and the San Joaquin County Environmental ment. This report complies with the San Joaquin County Ordinance, specifically 9-905.12(a) for a Surface and Subsurface Contamination Report. The subject property is located north of the intersection of Mackville Road and Liberty Road. Mr. John Shoup of Shoup Land Surveying has prepared the Tentative Map for this project, which is found in Appendix A. According to the San Joaquin County Development Title, a Surface and Subsurface Contamination Report (SSCR) must be conducted prior to Tentative Map submittal. It is my understanding the current zoning is AG-80 and there is no proposal to change the zoning. Interpretation of County Ordinance Section 9-905.12 (a)has been to focus on the subject property exclusively, unless it is documented or observed that an environmental concern in proximity to the subject property could potentially affect said property. This Surface and Subsurface Contamination approaches,but does not completely encompass the requirements of a Phase I Environmental Site Assessment (ESA) as promulgated by the American Society of Testing and Materials (ASTM E-1527-00). The Environmental Health Department recognizes that the Surface and Subsurface Contamination Report is not intended to completely fulfill the requirements of the Phase I ESA. The Department does however, maintain that certain components of the Phase I ESA must be applicable to the SSCR, as follows: Section 7.1.7 of the ASTM Document states under"Sources of Standard Source Information,"that "information or other record information from government agencies may be obtained directly from appropriate government agencies or from commercial services." /§ 1.1, § 1.2 Mr. Robert Burns is proposing to subdivide two existing Parcels containing 332± acres into four Parcels. Proposed Parcel 1 is to be 84.37 acres, Parcel 2 is to be 80.67 acres, Parcel 3 is to be 80.18 acres, and Parcel 4 is to be 86.62 acres. Mr. Markus Bokisch is a partner with Mr. Burns on the agricultural development of the subject property. Mr. Bokisch's expertise is in the development and operation of wine grape vineyards. It is my understanding that a single family residential structure may be built on each Parcel in the future,with obvious sufficient land area for a second unit dwelling, if so desired. This report addresses and evaluates non-point sources of hazardous materials, as well as potential point sources. Non-point sources of hazardous materials include potential agricultural chemical residues and the potential for high nitrate concentrations in the underlying groundwater. Point sources investigated on the subject property include: two on-site wells with diesel pumps,diesel fuel storage tanks and apparent fertigation systems on both wells,which is described on Page 5. Agrichemical storage/mixing areas are also discussed. No chemical analysis was conducted for this investigation, nor was there an inspection of any surrounding buildings(since there are no on-site buildings) for asbestos containing materials (ACMs). Page -2- Chesney Consulting