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SUR Weather conditions during the surveys included daytime temperatures from 85 to 103 degrees Fahrenheit. Temperatures at night were approximately 80 degrees Fahrenheit. Conditions were mild with little to no wind and excellent visibility. Surveys took place on July 29 through 31, 2003 and on August 1, 2003. The Site was surveyed once on July 29 from 12:30 p.m. to 4:30 p.m. and from 7:30 p.m. to 10:45 p.m. The Site was surveyed in the evening on July 30 and 31 from 6:00 p.m. to 11:00 p.m., and on August 1 from 6:30 am to 10:00 am.Nikon 8x40 roof prism binoculars were used to scan the Site for burrowing owls and other signs that might indicate their presence. Surveying after dark included driving slowly through the Site using a 1,000,000 candle-power spotlight to detect burrowing owl activity. Field notes documenting observations from the survey were maintained and digital photographs of significant Site features were taken. Potentially suitable burrowing owl habitat within 150 meters of the Site boundary on adjoining properties was also surveyed. Results and Conclusions The Site presents suitable habitat for the western burrowing owl; however, the pre-construction survey conducted by LFR wildlife biologists did not indicate evidence for species presence at the Site. The Site has an adequate number of potential burrows to serve as shelter for burrowing owls. There is at least one nearby water source and the available prey base appears to be adequate. Disturbance from people in the area, at least recently, also appeared to be negligible; however, this cannot be confirmed. There are various shooting targets set up at the Site and hundreds of spent shot- gun shells on the ground surface indicating that people have been using the Site for target shooting purposes. Additionally, the CNDDB search of the Tracy quadrangle indicates seven reports of burrowing owl observations in close proximity to the Site from 1991-2001. Despite favorable Site conditions, the survey results indicate that there are no western burrowing owls residing at the Site at this time. The results of the pre-construction burrowing owl survey indicate that it is safe to proceed with remediation activities at the Site. Evidence indicating the presence of burrowing owls on the Site was not discovered. Although the Site does not currently support burrowing owls, the habitat present at the Site could attract burrowing owls in the future. As required under CEQA,the work to remediate the Site should begin no later than 30 days following the completion of the sensitive species pre- construction surveys. Burrowing Owl Survey Rpt{draft3}:L 4