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01 May 2007 AGE-NC Project No. 07-1516 Page 35 of 39 t� indications,such as chemical storage or dumping,spilled powders,Ai�secdored or staine-d soil, or stressed vegetation, that the property has been significantly'adverselyimpacted by agricultural chemicals. AGE notes that the property formerly stored and used agricultural chemicals, but the buildings and storage areas were removed by the time of the site reconnais • Ine,1,000-gallon US (unleaded gasoline) was removed 6om the site in November 1992 hout SJCEHD-pe Its.In May 1993 confirmation sampling was performed by Geological "e approximately 16' x 8' x 8'tank pit; two samples were collected from the tank pit and one from the stockpile. The samples were analyzed for benzene, toluene, ethylbenzene and total xylenes(BTEX),Total Petroleum Hydrocarbons as gasoline(TPH-g) and Total Lead.The results of the analyses inferred non-detect for BTEX and TPH-g and low levels of lead (11 - 15 milligrams per kilogram (mg/kg)) where the detection level was 1 mg/kg.This UST location appears to have been south from the former airplane parking strip. A closure letter from the SJCEHD for this UST removal was issued on 21 December 1993. • With the 1990 issuance of Monitoring and Reporting Program (M&RP) Order #90-810, Cleanup and Abatement Orders#87-734 and 89-705 were rescinded by the CVRWQCB;no / soil cleanup was require,"t that ' e. • Property use�ncludedja residence and trailer that appeared to have utilized an in-ground 'septic system;'septic systems provide the potential of trespass to the subsurface; AGE has / no direct evidence-that a trespass has occurred. • The lack of asbesto survey for the subject property hangar. The age of the hangar might indicate that a urve e performed,but as noted from the site reconnaissance, the building was of metal construction with a dirt floor; no items of possible asbestos-containing materials were noted. Recognized Environmental Conditions This assessment has revealed the following recognized environmental conditions (RE connection with the property: • As noted from the property history and the Interview,the property has been utilized as a crop dusting service for over 50 years, with former and possibly long-term storage and use of agricultural chemicals,farffier fueling operations,the potential of spillage when the airplanes were loaded and the storage of scrap metals for at least four years. • Site investigations have been performed on the subject property with reference to a wash water discharge area and chemical storage areas since 1985. Cleanup and Abatement Orders were issued by the CVRWQCB in 1987 and 1989 to ensure further property assessment. Advanced GeoEnvironmental,Inc.