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Phase I Environmental Site Assessment 5.0 RECORDS REVIEW Carlton reviewed publicly available and owner provided documents relevant to the Site's use history and potential for on-site contamination hazards. The publicly available documents reviewed are subject to the limitations described in ASTM 1527-05,Standard Practice for Phase 1 Environmental Site Assessments; that is,documents must be reasonably ascertainable(publicly available,obtainable from its source within reasonable time and cost constraints,and practically reviewable). 5.1 AERIAL PHOTOGRAPHS Aerial photographs were reviewed to identify historical uses of the Site. Photographs taken in 1957,1963, 1970s,1984,1993,1998,2002,and 2005 were reviewed by Carlton for this assessment. The Site was located on the photos,viewed under magnification,and the photos were retained in file records. Copies of the photos are included in the Appendix of this report. In the 1957 and 1963 photographs,no structures could be identified in the Site area,and the ground appeared to be developed with agricultural crops. Drainage ditches and access roads are visible on the photograph. The surrounding properties are observed to be in a similar condition to the Site property. The 1970s photograph indicates conditions on the Site to be similar to those observed in the earlier photographs. The WPCF can be observed on the land adjacent to the Site on the east,and the ponds are observed on the ground to the north of the Site. Observations of the 1984 and 1993 photos indicate conditions at the Site similar to those observed on the 1970s photo. The Site conditions observed on the 1998,2002 and 2005 photos appear similar to each other and indicate the NCPA Combustion Turbine Project#2 and the San Joaquin County Vector Control fish-rearing ponds had been constructed between 1993 and 1998. The Site property appeared on the photos to be in a similar condition to that observed during Carlton's Site visit. No evidence of storage of petroleum products was visible on any of the photographs reviewed for this assessment. 5.2 ENVIRONMENTAL DATABASE RESEARCH As one of the methods for researching the environmental history of a subject property,the ASTM E 1527- 05 standard lists environmental databases to be reviewed for identification of possible proximate sites of environmental concern within specified approximate minimum search distances from the subject property. 5.2.1 Environmental Data Resources,Inc.EDR-Radius Map In order to satisfy due diligence requirements,Carlton utilized the services of Environmental Data Resources,Inc.(EDR),located in Milford,Connecticut,to supplement our review of regulatory databases and records. The EDR-Radius Map report is included in the Appendix of this report and summarizes a search of available environmental records including those specified in the ASTM E 1527-05 standard using,at a minimum,the search distances surrounding the Site as recommended in the standard. The database search results typically summarize records of sites and property conditions ranging from medical offices using radiology and chemical materials,to underground storage tank sites and related soil or groundwater contamination sites,to Federal Superfund cleanup sites. The sites are denoted on EDR's figures by number and approximate location relative to the target property(Site);the numbered sites are then keyed to the specific site information in the report. Lodi Energy Center Property ESA 8 Carlton Project No.6300-01-08 June 2008 CARLTONM E n g i n e e r i n g I n c.