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k'q KLEINFELDER 2) In general, on properties with a history of agricultural use, many underground pipelines may exist. It was common for some of the pipelines to contain asbestos (e.g. Transite pipe). Subsurface exploration is not a part of a typical Phase I Environmental Site Assessment scope of work. No known irrigated crops or underground pipes are present according to Mr. Pombo. Also, according to Mr. Pombo, the site has never been irrigated. However, in the event that any subsurface structures are encountered during site development or excavation on site, care should be exercised in determining whether or not the subsurface structures contain asbestos. If they contain asbestos, they should be removed, handled, transported, and disposed of in accordance with local, state, and federal laws and regulations. Additionally, if suspect materials are encountered, the signatories of this report should be notified immediately. * 6-�v'� 3) There are two wells located on site, one semi-abandoned and one active. The on-site active well is reportedly used to supply water or Ives oc c. ccording to Mr. Ralph Pombo, the active well was a replacement for the semi-abandoned well. The semi abandoned well had performance problems. The active well was installed to approximately 500 feet below ground surface. Furthermore, according to Mr. Pombo, the well has been successfully tested for certain water quality parameters. Copies of the tests were not available for Kleinfelder's review. Kleinfelder recommends that the water within the well be sampled and analyzed in accordance with the intended use, periodically (or as required). If the semi-abandoned well on site is to remain out of use, Kleinfelder recommends prop.er abandonment in accordance with local, state and federal regu atlons. Y 4) Wood debris, tires, empty containers of gas and oil, metal piping, 55-gallon drums, wire and other fence/corral supplies are located throughout the subject site and should be properly disposed. No soil stains, stressed vegetation or other signs of obvious contamination was noted. If evidence of contamination is discovered, the signatories of this report should be contacted immediately. 5) Surface stains were noted throughout the area underneath the machinery and in equipment storage areas. The soil staining appears to meet the definition of a "de minimus" condition under ASTM. Therefore, no sampling or cleanup is recommended. However, it is suggested that efforts be made to reduce future leaks. Drums were present on the subject site. Soil staining in these areas was not noted. If continued use of the drum contents is necessary, the drums should be relocated to an —� appropriate storage area (i.e. paved area with containment to catch spills). According to Mr. Ralph Pombo, a drum storage area is being designed for construction on site. If the contents of the drums is not needed on site, then the drums and contents should be disposed of properly. 20-4014-05.P01/2019R414r Page 19 of 23 Copyright 1999,Kleinfelder,Inc. July 1, 1999