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Kennedy/Jenks Consultants ' chemicals can migrate readily through these deposits If chemicals have entered the subsurface environment immediately upgradient of the subject property, a potential exists for these compounds to migrate to groundwater underlying the subject property Possible sources of chemicals in the site vicinity include leaking USTs and associated piping, ' improper chemical storage and subsequent leakage, and unauthorized discharges of hazardous waste to sewer lines and drains ' 47 Any Other Conditions of Concern 4 7 1 Radon ' The site is not located in an area with a high potential for radon buildup or seepage, it is unlikely, therefore, that there is a significant radon health threat in this location EPA estimates that only 2 4 percent of California homes are likely to have radon concentrations above the recommended EPA action level of 4 0 pCi/L To date available data collected in San Joaquin County does not indicate that there is a widespread radon problem, with only 3 6% of homes predicted to exceed the action level 4 7 2 Asbestos-Containing Building Materials ' An assessment for suspect asbestos-containing building materials (ACBMs) was limited to a visual assessment of readily accessible areas of the buildings on the subject site Three friable potential ACBMs, thermal system insulation (TSI), black tar-paper ceiling material, and linoleum, were observed Confirmation of the presence of ACBMs can only be performed using analytical testing which was not performed as part of this assessment The following materials were identified as suspect ACBMs on the subject property • TSE was identified covering the old hot water tank and on a pipe protruding near the ceiling of the boiler room at the Cunningham Hotel The remainder of the exposed piping in the boiler room was covered with foam insulation The water tank TSI covered approximately 50 square feet of area The amount of TSI covering hot water pipes within the walls is unknown This friable material had deteriorated and was in poor condition • Black ceding material was identified in the boiler room at the Hotel Cunningham The matenal was likely applied to the boiler room ceiling as a fire retardant The material covered approximately 120 square feet of area This friable material had deteriorated and was in poor condition ' • Linoleum was identified on the floor of the kitchen/laundry room on the second floor of the Cunningham Hotel The linoleum covered approximately 170 square feet of area This fnable material appeared to be damaged by age and in poor condition ' Two types of 8-inch floor the (typical of vinyl asbestos tile) and mastic was observed on the first floor of the unoccupied budding at 626-632 Market Street The tile, covering approximately 2,500 square feet of area, likely contains asbestos This material was observed to be in poor condition Because the second floor was not accessed, it is unknown if, or how much, tyle is in the flats on the second floor of the building ' i 51ob1B8t960014 Mtextdoc 14