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June 1,2005 NOA Project Number: E05058A 2.3 USGS Topographic Maps The topographic quadrangle depicting the subject property is the U.S. Geological Survey, Vernalis, California, quadrangle map. One 7.5-minute maps dated 1991 was available at NOA and through Microsoft Terraserver. In the 1991 map,the subject property is depicted as vacant or crop land located at 50 to 65 feet above mean sea level. The property and vicinity slope down to the northeast at a rate of approximately 15 feet per mile. Surrounding land is vacant or crop land with scattered residences. The Banta Carbona Irrigation Canal is depicted to the southeast of the subject property. This map is included in Appendix C of this report. 2.4 Interviews An attempt was made to obtain historical as well as current information relative to the subject property from the property owner or key site manager of the property. On April 10, 2005 an Environmental Questionnaire and Disclosure Statement was completed by Mr.And Mrs. Stan Robertson.A copy of their responses has been included in this report as Appendix E. In the responses to the questionnaire, Mr. and Mrs. Robertson indicated that the current title of the subject property is the Gerald A. Robertson Living Trust dated August 9, 2002. Stan and Betty Robertson are undertaking the responsibility for the process of land division of the subject property, according to an interview with Gerald Robertson's nephew, Hal Robertson,who is also the tenant of the subject property.The past and current use of the property is farming.The Robertsons indicated that, to their knowledge, no structures, hazardous materials storage or tanks have been located on the property, nor are they aware of significant spills of hazardous materials on the subject property. 3.0 PAST AND CURRENT SOURCES OF CONTAMINATION 3.1 Research Methods NOA employs a standard practice for review of database information. On a street map showing the location of the subject property, a circle is drawn one-quarter mile out from the property boundaries, and street maps or web-based mapping services are then used to determine address ranges for all streets within the quarter mile. All agency databases searchable by address are then searched for these address ranges. 4 "044