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January 17, 2006 Page 4 RNC PROJECT NUMBER 41204B � 1 Current and past corrective actions and response activities undertaken to address I past and on-going releases of hazardous substances,including engineering controls ' C} and institutional controls; and • Properties adjoining or located nearby the subject property that have environmental Fi conditions that could have resulted in conditions indicative of releases or threatened releases of hazardous substances to the subject property. ! Performance factors. In performing each of the standards and practices set forth in the AAI rules (40 CFR 312.20), RNC Environmental seeks to: i Gather the information that is required for each standard and practice that is publicly available, obtainable from its source within reasonable time and cost constraints, and which can practicably be reviewed; and Ft� • Review and evaluate the thoroughness and reliability of the information gathered in complying with each standard and practice listed in this subpart taking into account information gathered in the course of complying with the other standards and practices of this subpart. Rt y i • To the extent that there are data gaps in the information developed, identify the sources of information consulted to address such data gaps,and comment upon the 1 significance of such data gaps with regard to the ability to identify conditions on the I property. Specific investigative procedures include: F4 Interviewing the current owner and occupant of the subject property. If the property has multiple occupants,the inquiry shall include interviewing major occupants, as well as those occupants likely to use, store, treat, handle or dispose of hazardous F', substances, or those who have likely done so in the past. To the extent necessary to achieve the objectives and performance factors above, interviewing current and past facility managers, past owners, occupants, or operators of the subject property; employees of current and past occupants of the subject property; and/or one or more owners or occupants of neighboring or nearby # ' properties. Reviewing historical documents and records which may include,but are not limited to, aerial photographs,fire insurance maps,building department records, chain of title documents, and land use records. Historical documents and records reviewed i RNC Environmental, LLC • 974.6 Farktree Way,Elk G-ove, CA 95624 • 916.71.4.3073 • fax 916.290,0106 Cn1r?111i.tme,at to Service-Pride in Excellence