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issuance of the building permit." The only environmental concerns observed on or near the subject property were the referenced three tires. Personal communication with Mr. Robert McClellan of EHD indicates that up to nine tires may be transported without needing a license to cavy more than nine. The tires can be taken to the Tracy Transfer Station on MacArthur Road. It is further recommended that a sign be placed near the north end of the property stating that people caught dumping trash will be prosecuted. Potential environmental impact from the USTs at the Traina home and the Tracy Rural Fire Department suggest that there is an extremely small likelihood of adverse impact to the subject parcels. It would be impossible to investigate environmental contamination at the Traina residence because the location of where the tank was buried(if at all) is not known. Asbestos containing materials (ACMs)testing from any portion of the existing residential structure is outside the scope of this investigation. If the home is ever demolished, it will be the responsibility of the demolition contractor or his representative to test for ACMs at that time. In addition, this homesite was not investigated for hazardous materials. Private homesites may contain lead paint, asbestos or hazardous materials that may or may not be typical. Typical household "hazardous materials" include pesticide sprays, gasoline, paint thinners, used motor oil, antifreeze, etc. The ASTM E-1527-00 Document referenced above refers to de minimus environmental conditions. De minimus conditions generally do not present a material risk to public health or to the environment and generally would not include an enforcement action if observed by the appropriate governmental agencies. Household hazardous materials may be z. considered de minimus concems if there has been no spillage or dumping,which were not observed. This also applies to the on-site septic system that serves the residential stmctur . It is common knowledge that the subsoils have excellent percolation in the underlying gravel strata. The EHD no longer allows the installation of sumps or pits in this area due to the nitrate problem in the groundwater. As documented in several Surface and Subsurface Contamination Reports done for other projects in San Joaquin County, the surface and subsurface soils that currently compose the project will undergo significant changes during the initial phases of project development. This fact was also discussed in our 1999 SSCR for the Castello Estates project. Earthwork at the Castello Estates project presently undergoing development illustrate the dramatic changes from the original "in- place" surface soils. The soil cuts and fills are substantial. In the street areas, the cuts are approximately three feet with the pads built up two feet. Therefore it is our opinion that prel'! ry camaline and analysis for adverse constituents in the soil are not warranted due to these ic chanaes�inthe soils that will oc in mento e Additionally, soil chemistry alterations caused by environmental factors including increases in ultraviolet light exposure, moisture content,aeration, all lead to a 8 Chesney Consulting