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i Condor identified two historical recognized environmental conditions on the site • A cabinet and paint shop was located at 930 E Miner Avenue (248 N Aurora Street) through the w 1940s and 1950s During the early- to niid-1960s a sign company was at this location There is no record of how waste paints and solvents were disposed from these businesses If historical disposal methods were used on site, there is a potential risk for soil and groundwater contamination • Auto repair and auto body shops have been located at several site properties for many years Addresses of former and current auto repair and body shop businesses include 122, 204, and 210 N Grant Street, and 729, 811, 815, 829, 843, and 915 E Weber Avenue While current businesses appear to be disposing of waste materials in the proper manner, there is no record of how waste disposal at these businesses was conducted in the past Typical wastes for these facilities include motor oil, antifreeze, brake fluid, paint, and solvents If historical disposal methods were used on site, there is a potential risk for soil and groundwater contamination Condor has identified four de minimis conditions on the site and nearby properties Midway Supply Company at 931 E Weber Avenue maintains limited quantities of hydrochloric acid and hydrofluoric acid on the property for its manufacturing processes A spill prevention and response plan is in place at the facility The release of these chemicals to the environment is unlikely, so Condor considers this to be a de minimis condition s A 1,000-gallon UST that contained unleaded gasoline was removed from the property at 930 E Miner r Avenue in 1993 Laboratory analysis of two soil samples collected from the tank excavation at 11 feet • below ground surface indicated that benzene, toluene, ethyl benzene, total xylenes, and TPH-G were not detected in either sample The site received a "no further action" notification on December 17, 1993 Condor considers this to be a de minimis condition as additional risk to the environment is unlikely • Two USTs were removed from Valley Motors at 800 E Main Street in 1990 Since the tank removals, groundwater quality has been monitored Laboratory analyses have indicated the presence of TPH-G, MTBE, and benzene Condor considers the site to be a de minimis condition as the site is approximately 500 feet and cross-gradient from the site • The sites at 601 and 647 E Miner Avenue both had USTs in the past and are currently being monitored Laboratory analyses of groundwater samples from 601 E Miner Avenue have indicated the presence of TPH-G, MTBE, and benzene Laboratory analyses of groundwater samples from 647 E Miner indicate the presence of MTBE at levels close to the California Public Health Services Maximum Contaminant Level of 143 gg/L Condor considers these sites to be a de minimis condition as the sentinel monitoring well at 647 E Miner Avenue has only indicated the presence of MTBE The properties are also cross-gradient from the site OPINIONS 4 There are a number of issues concerning this area There are many sites that pose some degree of environmental risk, but these sites do not necessarily have enough known information to be considered recognized environmental conditions The area has many types of businesses, both presently and in the past, that used hazardous materials If these materials were not handled pursuant to current requirements, which is likely considering the long history with minimal environmental regulations, some environmental impairment is likely to be discovered with future development Sites such as auto repairs shops may have AM t� CONDOR