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possibility exists for impacts to the soil and/or groundwater from the storage and/or land application of treated wastewater in Neighborhood L. It is Condor's opinion that the identified petroleum hydrocarbon contamination of soil and groundwater associated with the Old Valley Pipeline located south of, and paralleling Byron Road across from Neighborhood L, and through Town Center constitutes a recognized environmental condition pursuant to the ASTM E 1527-00. The contamination was identified on the northern boundary of Town Center and up gradient of Neighborhood L and the possibility exists for the contamination to have migrated onto Neighborhood L. Contamination was identified within Town Center. Investigation and remediation activities are being conducted by Chevron Environmental Management Company in accordance with the requirements of San Joaquin County Environmental Health Department(SJCEHD) and the Central Valley Regional Water Quality Control Board: It is Condor's opinion that the former Standard Oil Pipeline Company easement (discovered in Neighborhood J documents and currently owned by PG&E) traversing Town Center constitutes a recognized environmental condition pursuant to the ASTM E 1527-00. Although the easement currently contains a natural gas pipeline, there may have been a petroleum pipeline within this same easement in the past. Other historic. petroleum pipelines in the area have been found to leak petroleum hydrocarbons, contaminating the surrounding soil. It is Condor's opinion that the two active pipelines (a six-inch diameter Chevron/Texaco petroleum pipeline and a 12-inch diameter Kinder Morgan petroleum pipeline) paralleling Byron Road between Byron Road and the railroad tracks constitutes a recognized environmental condition pursuant to the ASTM E 1527-00. Although these pipeline easements currently are not indicated as leaking, other historic w petroleum pipelines in the area have been found to leak petroleum hydrocarbons, contaminating the 6^ surrounding soil. It is Condor's opinion that the identified petroleum hydrocarbon contamination of soil and groundwater associated with the abandoned Shell CVC pipeline located in Neighborhood D constitutes a recognized environmental condition pursuant to the ASTM E 1527-00. Petroleum hydrocarbon contamination has been identified in adjacent Neighborhood E along this pipeline. Investigation and remediation activities are being.conducted by Shell in accordance with the requirements of the SJCEHD and Central Valley Regional Water Quality Control Board. It is Condor's opinion the service station on the southwest corner of Mountain House Parkway and Byron Road constitutes an historical recognized environmental condition pursuant to the ASTM E 1527-00. An historic map (apparently Pacific Gas and Electric map from 1937 to 1944) includes a service station at that location. No evidence of the service station has been detected at this location, however, underground fuel storage is typically associated with service stations. It is Condor's opinion that the piles of debris and solid waste, the old tires, and the old electrical transformers constitute de minimis conditions pursuant to the ASTM Standard. The debris and solid Waste, the old tires, and the old electrical transformers should be properly disposed of by taking them to { the appropriate waste disposal facilities. It is Condor's opinion that the old outbuildings, wells, and possible PCB-containing electrical transformers constitute de minimis conditions pursuant to the ASTM Standard. The records for the electrical transformers should be researched, the old outbuildings properly disposed of, and the wells tested and/or properly abandoned to prevent them from becoming conduits for groundwater contamination. i 4M il� CONDOR